3 |review for sketchup
LumenRT3 – Reference Manual
LumenRT 3 – Reference Manual
e-on software, inc.
e-on software europe
6107 SW Murray Blvd, Suite 264
68 avenue Parmentier
Beaverton, Oregon 97008-4467 - USA
75011 Paris - FRANCE
Phone 866-3414-EON
Phone + 33 1 4314 2815
Fax 971-228-0354
Fax + 33 1 4355 3671
Web
www.e-onsoftware.com
Info
www.e-onsoftware.com/info
Support
www.e-onsoftware.com/support
Feedback
www.e-onsoftware.com/feedback
Trademarks LumenRT 3, LumenRT 3 Review, Cornucopia, Cornucopia3d, "The Natural 3D Studio", "Natural 3D", "The Art of Natural 3D", "Solutions for Natural 3D Environments" are trademarks or registered trademarks of e-on software, inc. Windows, Windows 95, Windows 98, Windows NT, Windows 2000, Windows XP, Windows Vista and Windows 7 are registered trademarks of Microsoft, Inc. QuickTime, QuickTime VR, Mac, OS X, OS 9 are registered trademarks of Apple, inc. Flash and Photoshop are registered trademarks of Adobe, Inc. SketchUp and SketchUp Pro are registered trademarks of Google Inc. All other product and brand names mentioned in this manual are used for identification purposes only. They may be trademarks or registered trademarks, and, as such, remain the exclusive property of their respective holders. Copyright LumenRT 3 Program ©2012 e-on software, inc. All rights reserved. LumenRT 3 Documentation ©2012 e-on software, inc. All rights reserved. This manual, as well as the LumenRT 3 software described in it is furnished under a license agreement and may only be used or copied in accordance with the terms of such license agreement. Information in this document is subject to change without notice and does not represent product specification or commitment on the part of e-on software, inc. Algorithms used inside this software were developed for visual performance only, and may not constitute a precise simulation of real phenomena. Warning: This software and the accompanying documentation are protected by U.S. copyright law as well as by international intellectual property conventions. Any reproduction, sale, transfer, transcription, storage in a retrieval system, translation into any language in any form or distribution by any means whatsoever of this software or accompanying documentation, in part or in full, without the prior written permission from e-on software, inc. is strictly forbidden. Any such act shall constitute a copyright violation and shall be prosecuted to the fullest extent of the law.
Printed July 2012
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LumenRT 3 – Reference Manual
Contents Getting Started WHAT’S NEW
7
Animated Digital Nature Content .......................................................................................7 Digitial Nature Content Pack..............................................................................................7 Fast Screen-Space Ambient Occlusion................................................................................7
REAL-TIME ARCHITECTURAL VISUALIZATION
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KEY BENEFITS .......................................................................................................................10 KEY FEATURES ......................................................................................................................11 Immersive Media – Experience Designs in Real-Time 3D................................................11 Digital Nature – Enrich Designs with Animated Natural Elements..................................12 3D for Everyone – Collaboration Made Simple................................................................12
TECHNICAL INFORMATION
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SYSTEM REQUIREMENTS .......................................................................................................13 Pre-Processing Machine...................................................................................................13 Navigation/Viewing Machine............................................................................................13 INSTALLATION .......................................................................................................................14 Welcome ............................................................................................................................14 Desired Operation.............................................................................................................14 Software License Agreement .............................................................................................14 Required Dependencies.....................................................................................................14 Install Trial or Full ...........................................................................................................15 User Information...............................................................................................................15 Required Components .......................................................................................................15 Installation Type ...............................................................................................................15 Installation Progress.........................................................................................................16 ACTIVATION ..........................................................................................................................16 Full Product Activation during Installation......................................................................16 Transforming Your Trial Version into a Full Product ......................................................17 Activating the Content Pack for your Full Product...........................................................17 SUPPORT ................................................................................................................................17 UPDATING .............................................................................................................................18
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LiveCubes HOW IT WORKS
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LUMENRT 3 WORKFLOW ..................................................................................................... 20 Export............................................................................................................................... 20 Pre-Process ...................................................................................................................... 20 Share ................................................................................................................................ 21 LUMENRT 3 LIMITATIONS .................................................................................................... 21 Model Size ........................................................................................................................ 21 Real World Units.............................................................................................................. 22 GETTING STARTED TUTORIAL .............................................................................................. 23
NAVIGATING THE LIVECUBE
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Basic Navigation Controls ............................................................................................... 29 Extended Navigation Mode Controls ............................................................................... 29
GENERATING A LIVECUBE
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LUMENRT 3 SKETCHUP PANEL ............................................................................................ 33 ANIMATION .......................................................................................................................... 41 SHARING THE LIVECUBE ...................................................................................................... 42 SAVING STILLS AND ANIMATIONS ........................................................................................ 43 MATERIALS .......................................................................................................................... 44 Water ................................................................................................................................ 44 Bump ................................................................................................................................ 45 Specularity........................................................................................................................ 45 Reflective Materials.......................................................................................................... 46 Texture Maps.................................................................................................................... 46 ANIMATED DIGITAL NATURE CONTENT ............................................................................... 47
Going Further TUTORIALS
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OPTIMIZING LARGE MODELS ................................................................................................ 50 MATERIALS .......................................................................................................................... 53
IMPROVING YOUR LIVECUBES
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SKETCHUP MODELING AND SCENE OPTIMIZATION .............................................................. 56
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Smoothing Curved Surfaces ..............................................................................................56 Add Wall and Floor Thickness ..........................................................................................56 Avoid Degenerate Faces ...................................................................................................56 Avoid Very Large Surface Areas.......................................................................................56 Eliminate Orphaned Geometry to Avoid Unusually Large Pedestals ...............................57 Use Groups, Components and Layers...............................................................................57 Use Real World Units........................................................................................................57 Use Fewer Polygons .........................................................................................................57 Export Only Part of the Scene...........................................................................................57 Add Thickness to Carpeting/Flooring ...............................................................................58 Keep Models above the Ground Plane..............................................................................58 Clean Ground Plane Intersections....................................................................................58 Use Planar Faces for Water and Glass Materials ............................................................58 Avoid Using Fake Reflection Maps for Transparent Materials ........................................59 Aim the Sun to Increase Interior Lighting.........................................................................59 Initial Camera Position Is First Scene Tab or Current Camera View ..............................59 Use Perspective Camera Views.........................................................................................59 Reduce the Number of Reflective/Transparent Materials .................................................59
TROUBLESHOOTING
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Light Appears Around Wall Corners ................................................................................60 Dark Shadows Appear at the Bottom of a Wall or in Corners ..........................................60 Large Objects Going Through Others Seem to Have Wrong Lighting .............................60 Pre-Processing Takes Forever..........................................................................................61 Window Glass Is Blinking when Navigating in LiveCube.................................................61 Pedestal is too Big Compared to the Model......................................................................61 Playback Performance in the LiveCube is Slow or Choppy..............................................61 Some Faces Are Missing ...................................................................................................62 Flickering Polygons ..........................................................................................................62 Object Surfaces are not Smooth ........................................................................................62 Splotchy Looking Shadow Artifacts...................................................................................63 Water Material is not Rendering with Ripples or Caustics...............................................63 No Bumps (or Not Enough Bumps) on Objects .................................................................63 Noisy Looking Areas .........................................................................................................63 I Can’t Find my LiveCube File .........................................................................................63 How Do I Launch the LumenRT 3 Application? ...............................................................64 How Do I Avoid Having my LiveCube Files Overwritten? ...............................................64
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Animation Playback Pauses at Regular Intervals ............................................................ 64 Video Board Suddenly Not Supported.............................................................................. 64 Overly Saturated Indirect Light ....................................................................................... 64 Some Pictures Are Missing............................................................................................... 65 LiveCube Refuses to Run on another System.................................................................... 65
LICENSE AGREEMENT
66
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Section 1
Getting Started
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What’s New Listed below is a description of the new features and capabilities within LumenRT 3.
Animated Digital Nature Content New in LumenRT 3 is the addition of life-like Digital Nature which allows your designs to be placed in a “natural context” surrounded by landscape elements (such as skies, vegetation, and water) and objects and characters (such as cars, humans, and animals). Fully animated with natural motions and behaviors, LumenRT 3 Digital Nature delivers a more inviting and engaging user experience while adding clarity and context for a design’s “look and feel”. Best of all, these Digital Nature Elements are added as simplified components directly inside of Sketchup and are automatically converted into high fidelity, fully animated objects in LumenRT.
Digitial Nature Content Pack In addition to the sample Animated Digital Nature Content included in LumenRT 3, an extra Digital Nature content pack is available containing hundreds of items including flying birds, animated groups of characters, detailed cars and objects, a variety of backgrounds, and a large vegetation library of trees, plants, and shrubs. The Digitial Nature Content pack is sold separately.
Fast Screen-Space Ambient Occlusion LumenRT 3 now employs a Fast Screen-Space Ambient Occlusion Mode to generate real-time ambient shadows. While not as high in quality as the higher quality LumenRT 3 baked illumination, it produces very nice output in just seconds (using draft mode) with very nice looking results.
Smooth Motion Setting to Soften Sketchup Animation Sketchup camera animation paths can now be softened to produce more pleasing, life-like motion. The amount of softening is completely user adjustable.
Large Model Improvements The generation of large LumenRT 3 LiveCube models has been improved by providing greater stability, performance, and optimization features. When exporting very large models, stability has been improved by allowing an optimized process to export models that workaround Sketchup’s 32bit address space limitation. Also, larger models can be viewed in LumenRT with better interactive performance on less capable graphics cards by adjusting the display quality up or down using the F8 and F7 buttons respectively.
Quick Render Button for Fast Previewing LumenRT 3 contains a separate “Quick Render” button, which will produce a draft LiveCube in just seconds using the new Screen Space Ambient Occlusion lighting model.
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LumenRT 3 LiveCube Enhancements The interactive capabilities of LumenRT 3 LiveCubes have been enhanced with several new features including sun lens flares, a new fly-through naviation mode (F4), and the ability to adjust the display quality level up (F8) and down (F7).
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Real-Time Architectural Visualization
LumenRT 3 is e-on software's revolutionary product for the visualization of architectural projects in real-time 3D with photo-real illumination. Thanks to LumenRT 3, architects no longer have to choose between high-quality images and realtime visualization: They can walk or fly through their designs and experience the true quality of light in fully interactive 3D! LumenRT 3 real-time environments can even be packaged into convenient, self-contained executables that can be run on any computer without requiring additional software. Designed to provide high fidelity visualization with accurate lighting, shadows and reflections, LumenRT 3 is the ideal solution for: •
Creating a virtual interactive showroom
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Demonstrating and sharing design concepts
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Visualizing 3D models in client presentations
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Exposing your projects in fully real-time photo-realistic 3D
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Key Benefits
LumenRT 3’s output is fully interactive and will run on any computer without special viewing software making it easy to share designs and collaborate with anyone. •
High definition, photo-realistic 3D Viewing
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Accurate lighting, shadows and reflections
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Fast interactive 3D viewing performance
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Runs on any machine – no special viewing software required
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Incredibly simple, push-button operation
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Automated rendering output from SketchUp/SketchUp Pro.
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Display greater details with accurate lighting and shadows
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Share models with anyone effortlessly
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Explore and interact with models in real-time
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Gain deeper insights on model features and aesthetics
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Create interactive 3D walkthroughs and presentations that will impress your clients
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Key Features
Immersive Media – Experience Designs in Real-Time 3D LumenRT 3 is a next generation medium that extends traditional visualization and animation capabilities into the realm of “interactive experiences”. Instead of just watching canned graphics and animations, the client becomes part of the action by navigating and interacting with models and scene elements. With features such as accurate natural lighting, real-time reflections, soft shadows, and motion blur, designs are brought to life with vivid realism and breathtaking artistry. Key Immersive Media features include: •
Vivid, detailed realism
•
Accurate natural lighting and soft shadows
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Real-time reflections and motion blur
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Interactive exploration and navigation of designs
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Digital Nature – Enrich Designs with Animated Natural Elements New in LumenRT 3 is the addition of life-like Digital Nature which allows your designs to be placed in a “natural context” surrounded by landscape elements (such as skies, vegetation, and water) and objects and characters (such as cars, humans, and animals). Fully animated with natural motions and behaviors, LumenRT 3 Digital Nature delivers a more inviting and engaging user experience while adding clarity and context for a design’s “look and feel”. Key Digital Nature elements include: •
Wind and breeze animated vegetation
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Natural motion characters and animals
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Detailed objects
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Animated water with caustics
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High-resolution HDRI sky and background maps
3D for Everyone – Collaboration Made Simple With LumenRT, you don’t have to be a rocket scientist or computer graphics guru to create amazing results. In most cases, you can generate realistic, interactive scenes with a single mouse click directly from your CAD system. There is no special application to learn. Instead, LumenRT seamlessly transforms your designs into life-like immersive media that can be shared with anyone without requiring any special viewing software. 3D for Everyone features include: •
One-click processing directly from your CAD system
•
No special viewing software required
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Runs on PC and Mac platforms
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Works with the popular Architectural Solution – Sketchup.
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Technical Information System Requirements LumenRT 3 is a 32 & 64 bits application, designed for the Windows® 32/64 bits XP, Vista and 7 as well as Intel Mac OS X platforms. A 64 bit system is highly recommended for authoring LiveCubes (32 bit systems are fine for playback). LumenRT 3 is either CPU or GPU intensive depending on the task being performed. The pre-processing phase is CPU intensive while the navigation/viewing process is GPU intensive. Performance of the software is directly related to the power of the system running it. LumenRT 3 is optimized to make the best of all the processors/cores on your system. The power of your video board directly impacts the frame-rate during real-time 3D play-back. LumenRT 3 Review for SketchUp requires SketchUp 7 or 8 (free or Pro version).
Pre-Processing Machine This is the machine on which you will export your scene from SketchUp. So basically it should be able to run SketchUp, but you'll need a lot of power to process the scene so that it doesn't take ages to compute. •
Windows XP/Vista/Windows 7 32/64 or Mac OS X v10.6+ 32/64 (64 bit recommended)
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nVidia GeForce 8800 or newer or ATI Radeon 4000+ or newer video board, with at least 512MB VRAM
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2GHz Intel processor or faster (multi-core CPU recommended)
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2GB of free RAM (4GB recommended)
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4GB of free Hard Disk space.
Navigation/Viewing Machine This is the machine on which you or your client will navigate and explore the model. The more complex your model is, the more graphic power it will require. •
Windows XP/Vista/Windows 7 32/64 or Mac OS X v10.6+ 32/64
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nVidia GeForce 8800 or newer or ATI Radeon 4000+ or newer video board, with at least 512MB VRAM
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2GHz Intel processor or faster
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1GB of free RAM (4GB recommended)
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200MB of free Hard Disk space.
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Installation The installation program, which is described below, is located on your installation DVD/download. The initial start and updating the software is described separately. Follow these steps to install LumenRT 3 onto your computer: •
Place the installation DVD into your computer's DVD drive. It should auto-start (Windows) or its symbol should appear in the Finder (Mac OS). If not, open the DVD manually.
•
Double click the Install LumenRT 3 link on the auto-start screen or double-click on the Setup application file.
Welcome Clicking on Next will take you to the Desired Operation window.
Desired Operation Select the version of LumenRT 3 that you want to install: 32 or 64 bits.
Software License Agreement Read the license agreement carefully. These terms must be agreed to in order to continue with the installation.
Required Dependencies LumenRT 3 will first install the required dependencies. Press Next when this completes.
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Install Trial or Full Select whether you are installing the Trial Version or the Full Verison.
User Information Enter your Name and the name of your Company (if applicable). If you are installing the full product, enter your Serial Number. You can either type these into the corresponding fields manually or copy and paste them from an e-mail. If you enter the license numbers manually, simply enter them as they appear in the registration information including all digits and letters, skipping the dashes. If you have received an e-mail containing the license numbers, simply copy the entire contents of the email and copy it into the first field. Please note that this number is confidential, and should not be communicated to third parties. You will be asked for this serial number or your product installation code to download data from our website.
Required Components You will have the choice of installing LumenRT 3 for different version of SketchUp you have on your computer. Select the location of your main SketchUp application folder.
Installation Type During the installation process, you will have the choice of installing all of the software, or only parts of it. Since only what is necessary is actually installed on your hard-drive, we recommend you choose the Typical installation mode. The default target directories for the LumenRT installation are prefilled. If you wish to install LumenRT in a different location, you can change that here.
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Installation Progress The installation can be canceled at any time as long as the progress bar is visible by clicking on Cancel. If the installation is canceled, the installation process must be restarted completely, as described above.
Activation Full Product Activation during Installation If you are using a full commercial version of LumenRT 3, you must activate the product before you can start using it. When activation is required during the installation process, a screen displays with two options: •
You can choose to Automatically activate online. This option attempts to connect to your e-on software account and activate the product there.
•
You can choose to Activate the product manually. Use this option if the machine you are running LumenRT 3 on is not connected to the Internet. A screen displays for you to copy or write down the Installation Code (INST-) that you will need to activate your software. You will then need to take this code to another machine that has Internet access to log into your account, enter your INSTcode.
When you go to your account page to activate, you will receive an email with an activation key file attached. Place this key file in a directory that gets backed up frequently and is safe from accidental erasure. The next time you are asked for the activation of your LumenRT 3 product, choose to Activate the product manually and click to locate the activation key file, locate it on your hard drive and your product will finally be activated.
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Transforming Your Trial Version into a Full Product If you are using a Trial version of LumenRT 3, watermarks will appear over your exported LiveCubes navigation window. These watermarks can be removed by transforming your trial version into a full commercial product. There are three ways to achieve this: •
From within the host application, through its main menu, by selecting Plugins | LumenRT 3 | Convert to Full License
•
From the LumenRT 3 plugin window, by clicking the Convert to Full License yellow banner.
•
From within a LumenRT 3 LiveCube: while navigating, pressing F1 to display the main help screen, and clicking the Convert to Full License yellow banner.
You will then be able to either buy the full product of your choice online (Standard or Content Pack Bundle), or activate directly if you already have a full product serial number. If you buy online, once you receive your serial number, you shall then proceed with the Activate Now option. When Activating, you will be asked for your serial number, and the activation process becomes similar to the one described in the previous section during installation of the product.
Activating the Content Pack for your Full Product If you are using a Full LumenRT 3 Review product license, but not a full Content Pack Bundle product, you can get the content pack by proceeding as follows: •
From within the host application, through its main menu, by selecting Plugins | LumenRT | Get the Content Pack
You will then be able to either buy the content pack online, or activate it once you have bought it.
Support If you experience difficulties installing or using the software, the first thing we recommend is that you visit our website and read through the frequently asked questions to see if there is already an answer to your problem in there. If not, please visit www.cornucopia3d.com/forum.
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LumenRT 3 – Reference Manual As a registered client of e-on software professional products, you also benefit from the following standard support services: •
Phone-based installation troubleshooting for 90 days following your purchase,
•
Knowledge Base and Frequent Question resources,
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Web-based Technical Support,
•
Registered User Forums,
•
Free Software Updates
Updating No software is ever perfect. This is why e-on software regularly releases software updates through its website. These updates can provide new features as well as bug fixes. Keeping your software up-to-date by regularly downloading and installing these updates is recommended for optimal performance. LumenRT 3 updates can be downloaded at www.e-onsoftware.com and are accessible from your account. If you ever need to revert to a previous LumenRT 3 version after having installed an update, it is possible from within the host application, through its main menu, by selecting Plugins | LumenRT | Cancel Last Update.
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Section 2
LiveCubes
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How It Works LumenRT 3 Workflow The process for creating and sharing the interactive LumenRT 3 LiveCube is very simple and straightforward. The workflow is divided into 3 basic steps: (see the illustration below):
Export The export process transfers the model from SketchUp to LumenRT 3. This is done by using the LumenRT 3 export plug-in located directly inside the SketchUp user interface. Invoking the plug-in will automatically send the model complete with all geometries, materials, lighting, and animation paths to the LumenRT 3 renderer. Your computer may appear to lag while this process is performed. You can check the status bar at the bottom of SketchUp to monitor the export progress (although SketchUp may freeze up temporarily while the export completes). The export process is faster when you re-export a model that was just exported. You can export the entire model, or only part of it. If you wish to export only part of your model, simply select the part to export and run the menu command Plugins | e-on software LumenRT 3 | Export Selected.
Pre-Process The pre-processing phase is what creates the actual LumenRT 3 LiveCube. In this step, LumenRT 3 computes the scene lighting and shadows and bakes this into the LiveCube to produce a vivid, life-like 3D model. This rendering step is very resource intensive and can range anywhere from several minutes to several hours to complete depending on the computing platform, model complexity, and desired output quality. We have tried to make the progress indicator as linear as possible, however, due to the great differences in scenarios supported by LumenRT 3, this is not always possible.
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Share After the render process completes, LumenRT 3 creates the final LiveCube output (stored as a folder in the Documents/e-on software/LumenRT 3 folder). The LiveCube allows users to "walk-around" inside a 3D scene containing the high-fidelity model. You can share LiveCubes with anyone on a Windows or Macintosh platform. To share a LiveCube, simply publish it by pressing the Publish button in the help panel. You can share published LiveCubes by sending the self-running executable file via email or ftp in the same way a selfextracting zip file can be shared. LiveCube recipients simply click the file and it runs automatically. You can also export screenshots and canned animations from the LiveCube. This feature is not available in the LiveCubes that you publish for sharing with clients. The animation path is based on the camera motion that was setup in SketchUp.
LumenRT 3 Limitations While LumenRT 3 is a very powerful and easy-to-use tool, there are practical limits to what it can do in terms of its current functional capabilities as well as limits imposed by computing and graphics hardware. Keep in mind the following when considering the usage of LumenRT 3:
Model Size Models that contain more than 500,000 faces (e.g. cities, models with lots of 3D vegetation models) are not recommended for LumenRT 3 processing. LumenRT 3 can certainly process large models of any size, but chances are most graphics cards will not be able to smoothly navigate the LiveCube output unless a very high-end graphics card is used. For very large models, there is a chance that Sketchup might crash during the export process due to Sketchup’s 32-bit addressing limitiation. If this happens, you can disable the Fast Export feature (see page 334) which will then export the model using a slower, but more reliable method. Also, the LumenRT 3 pre-processing time depends strongly on the total surface area of the model. A warning will appear whenever you try to process models with a total surface area over 4,000 square meters (roughly 40,000 sq. ft.) as the time required to process such models may become prohibitive. For very large scenes, you should consider using the Auto-scale lighting feature (see page 33).
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Real World Units LumenRT 3 lighting is based on real world units. To maximize realism and ease navigation, it’s critical that models are built at the full real world unit scale (e.g. 1:1 not 1:2 or 1:4).
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Getting Started Tutorial The best way to learn LumenRT 3 is to create your own LiveCube. This tutorial will provide a quick overview of how to create your first LumenRT 3 LiveCube from SketchUp.
Step 1 – First LiveCube To start this tutorial, load the Getting Started Tutorial/LumenRT 3 Tutorial step 1/SketchUp/ LumenRT 3 Tutorial - step 1.skp SketchUp scene from CD. This is a very simple and crude model of a single-room house with a pool. The scene was designed to show you how you can easily create a LiveCube and then improve its visual impact with a few simple tricks. First, we will export the model to LumenRT 3 to see what it looks like. Click the LumenRT 3 icon or select the menu command Plugins | e-on software LumenRT 3 | Export Full Model. This will bring up the LumenRT 3 interface where you can select the LiveCube output quality and environment. Select the Nice Weather atmosphere, a Grass pedestal and set quality to Full Lighting, then click Generate. LumenRT 3 will now export the model and then initiate the pre-processing phase. This process is very CPU intensive but will run in the background so that you can continue working on other tasks. Here, the model is very simple, so pre-processing and generating the LiveCube should only take a couple of minutes. When pre-processing is complete, the LiveCube will appear on screen. The initial start or “home” position of the LiveCube will either be the first keyframe of the animation or the current camera position of the scene if no animation is present. Click in the window to start moving around and exploring the LiveCube. Press the left mouse button to walk forward. Move the mouse left and right to look around. The F1 key displays the help menu and explains each of the navigation keys and navigation modes. As you explore, notice how light flows in through the door and bounces around the little room. In the next step, we will change the opaque blue window into a glass pane.
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Step 2 – Glass Window Close the LiveCube and go back to SketchUp. Select the window pane and assign it a blue glass material from the standard materials. Because the material has some transparency to it, it will be identified as glass by LumenRT 3. Regenerate the LiveCube. Tick the Overwrite Files checkbox if you want to overwrite the previous LiveCube, or untick it to preserve the previous LiveCube (a version number will be automatically appended to the new LiveCube name). When the LiveCube launches, notice how the window pane now appears as transparent glass with realistic reflections. Notice also how more light streams into the room through the window. In the next step, we will turn the blue surface in the pool into water.
Step 3 – Water Pool Go back to SketchUp and assign a material from the water collection to the blue plane in the pool. Any material with the word "Water" in it will be identified as water and LumenRT 3 will automatically add gentle ripple and caustic effects. Generate the new LiveCube and check out the water in the pool. If you want to speed up the process, you can export your model in Draft quality. Because this mode does not generate indirect ligthting, the pre-processing phase is a lot faster. Draft mode is very useful when you want to fine tune your materials. In the next step, we will improve the look of the tiles around the pool.
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Step 4 - Materials First, we will add shininess to the tiles around the pool. In SketchUp, bring up the LumenRT 3 Material Editor (Plugins | e-on software LumenRT 3 | Edit Materials) and edit the tile material by adding 20% Specular Amount and 30% Specular Shine. This sets specular highlights to moderately high and shiny values. You can check the result by generating a Draft quality LiveCube. Notice the highlights on the pool tiles. Now let’s tweak the pool material further to increase the "bumpiness" of the tiles. Using the LumenRT 3 Material Editor, add a -100% bump to the tile material to invert the bumps on the material and increase the bump amplitude. Regenerate the LiveCube. Using modifications like these, you can customize the way your materials look in LumenRT 3 LiveCubes. Once you are satisfied with your materials, generate a Full Lighting or better quality LiveCube to enjoy full quality lighting.
Step 5 – Add LumenRT Vegetation Let’s add a tree from the LumenRT content collection. Open up the Sketchup component window and navigate from the top level Components folder to LumenRT | Plants | Acacia1 and then place the tree next to the pool.
Step 6 – Time of Day Now we will change the time of day to see how this influences lighting. In SketchUp, adjust the time of day to 7:15 AM and regenerate the LiveCube. Notice how the amosphere of the scene has changed because of the change in lighting.
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Conclusion That’s it!! You have created your first LumenRT 3 LiveCubes and learned how to improve the looks of your materials. Now you can try generating LiveCubes of your own models. However, we recommend you read on in order to get a better understanding of how LumenRT 3 works and how to avoid common errors. If you run into any issues, please refer to the Troubleshooting section page 60. The next section will describe the navigation and viewing features of LumenRT 3 in greater detail.
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Navigating the LiveCube In LumenRT 3, the mouse is the primary device used to navigate the LiveCube in a manner similar to walking through a 3D video game or orbiting inside a 3D application. You can view a quick tutorial on navigating LiveCubes through the help pannel (F1 then click the Navigation Tutorial button) or here: http://www.lumenrt.com/navigationtutorial. LumenRT 3 offers four different navigation modes for viewing and exploring LumenRT 3 LiveCubes: Walk-Thru Mode (the default mode, activated by pressing the F3 key) is like a first person video game. The user operates the mouse controls to “wander” through the model as if he/she was walking through the scene. Pressing the left mouse button will cause the camera to walk forward. You will see a small circle in the scene as you walk which indicates the heading. The speed of walking increases if you keep the mouse button pressed. Simply release mouse button to reset speed.
The camera is fixed to a height of 1.6 meters above the ground (about the eye level of an average-sized adult). You can move up or down using the Page Up and Page Down keys. The camera will revert to its standard height as soon as you start walking again. Walk-thru mode is sensitive to obstacles such as walls which will halt movement (and display a halt icon) until the user clicks and releases the mouse to walk through the wall. Features such as stairs will cause the movement to simulate walking up or down the flight of stairs. Users can move up or down to different floors by using the elevator up/down keys to lightly fly up or down to a different floor. Orbit Mode (activated by pressing the F5 key) operates very much like a typical 3D application such as SketchUp. Controls such as pan, zoom and rotation changes the camera viewpoint in the scene.
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LumenRT 3 – Reference Manual Fly-Thru Mode (activated by pressing the F4 key) allows you fly through the scene very quickly by jogging the middle mouse button and pivoting the camera around by pressing thre left mouse button. Animation Mode (activated by pressing the F2 key) is an optional form of navigation that becomes
available if the SketchUp scene contains an animation path which is derived from the SketchUp scene tabs. In this mode, the animation will begin as soon as the LiveCube is launched. Animation mode also allows a slide show style of navigation similar to a PowerPoint presentation by moving forward or backward to various scene snapshots using the arrow keys. You can stop animation playback anytime by pressing the left mouse button which will switch to walk-thru mode and start walking from where the camera is (and restore the default height). Time of Day is adjusted by using the “G” and “H” keys to set the sun position to an earlier or later time respectively. Please note that the time of day controls are only active if the LiveCube was rendered using the Adjustable time of day option during export.
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Basic Navigation Controls The basic navigation controls are the first level set of controls. The LumenRT 3 control summary displays each of the basic movements such as using the mouse to navigate.
Extended Navigation Mode Controls The extended controls allow refined movements and operation according to the four navigation modes: •
Animation Mode
•
Walk-Thru Mode
•
Fly-Thru Mode
•
Orbit Mode
These extended controls are accessed by pressing F1 (More) from the Basic Navigation Controls dialog.
Additionally, if the LiveCube was rendered using Adjustable Time of Day, the time of day controls will appear on the extended controls help screen.
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LumenRT 3 – Reference Manual An exhaustive list of the LumenRT 3 navigation controls can be consulted online by clicking the More Controls button on the help screen (F1). It corresponds to the listing included below.
Basic Controls
Key
Description
Help
F1
Displays the help screen.
Toggle FullScreen/Window Mode
Alt + Enter
This will toggle full screen or window operating mode.
Exit
Esc
The escape key (esc) pauses operation of the LumenRT 3 viewer window.
Return to Start
Home
The home key (home) will return the camera to the start position.
Animation Mode
F2
This is the default startup mode when an animation is present in the exported file.
Walk-Thru Mode
F3
Walk-Thru mode is the default mode for the LumenRT 3 viewer when an animation is not present.
F4
Quickly fly-thru the scene using the middlemouse button and pivot the camera side-toside and up-down using the left mouse button.
Orbit Mode
F5
Orbit mode operates like a standard 3D application where the camera can be placed at any angle and height by panning, zooming and rotating.
Screenshot
F6
Generates an instant screenshot of the current viewport at full quality, and saves the picture within the export folder.
Display Quality
F7/F8
Pressing F7 reduces display quality while pressing F8 increases display quality.
Fly-Thru Mode
Online Help
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Online Help
on-screen button
Goes to the LumenRT Website.
LumenRT 3 – Reference Manual
Publish
Save Animation
Publish
on-screen button
Save Animation
on-screen button
Publishes the LumenRT 3 LiveCube as a self-executing compressed file suitable for sharing with others.
Generates a canned animation file of the camera movement inside the LumenRT 3 LiveCube.
Animation Mode Controls (F2)
Key
Description
Pause
Space
Tapping the space bar will pause the animation.
Previous/Next Keyframe
Left/Right Arrow Keys
Use the left/right arrow keys to jump to specific keyframes.
Start/End
Home/End
Go to the animation start/end.
Switch to Walk-Thru Mode
Left mouse
Click the left mouse button to switch into walk-thru mode.
Walk-Thru Mode Controls (F3)
Key
Description
Look Right/Left
Mouse Left/Right
Moving the mouse left/right with no buttons pressed orbits the camera.
Walk
Mouse Down Left
Left mouse down hold – walks forward.
Run Forward/Backward
Middle Mouse Button
Shuttle the middle mouse button to run forward or backward.
Pan Right/Left
Left/Right Arrow
Use the right/left arrows to move sideways.
Elevator Up/Down
Page Up/ Page Down
Press and hold the page up/page down keys to jump to another floor above or below – release the keys when you are above the desired floor.
Key
Description
Look Right/Left
Left Mouse Down Move Left/Right
Pivots the camera around horizontally.
Look Up/Down
Left Mouse Down Move Up/Down
Pivots the camera around vertically.
Fly-Thru Mode Controls (F4)
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LumenRT 3 – Reference Manual Run Forward/Backward
Middle Mouse Button
Shuttle the middle mouse button to run forward or backward.
Pan Right/Left
Left/Right Arrow
Use the right/left arrows to move sideways.
Raise/Lower Camera Height
Page Up/ Page Down
Press and hold the page up/page down keys to raise and lower the height of the camera.
Orbit Mode Controls
Key
Description
Orbit Right/Left
Mouse Down Left
Hold and drag the left mouse button to orbit around the scene.
Zoom In/Out
Middle Mouse Button or Up/Down Arrow
Shuttle the middle mouse button to zoom in and out. Alternatively, you can use the up/down arrow keys.
Pan Right/Left
Left/Right Arrow
Use the right/left arrow keys to pan sideways.
Raise/Lower Camera Height
Page Up/ Page Down
Press and hold the page up/page down keys to raise and lower the height of the camera.
Time of Day Controls
Key
Description
Earlier/Later
“G”/”H”
Press G or H to move the sun to an earlier/later time respectively.
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Generating a LiveCube LumenRT 3 SketchUp Panel To export a model as a LumenRT 3 LiveCube, go to the SketchUp Plugins menu and select e-on Software LumenRT 3 | Export Full Model or Export Selected and a LumenRT 3 dialog will appear. Each of the dialog export options are described below: Sky: This selects which type of Sky/Atmosphere to use. See the Sky Atmosphere Options discussion below for
more details about each atmosphere. Adjustable Time of Day: When this option is checked, LumenRT 3 will generate a clear blue sky atmosphere with a dynamic sun, allowing you to change the time of day in the Live Cube using the “G” and “H” keys. The sun position is calculated from the actual time zone, date and geo-position used in the Sketchup model. Horizon: This selects which type of distant background
will be used. If none is selected, the scene will use an infinite flat horizon. Quality: Indicates which of 5 quality settings to use. Draft generates a fast preview in under a minute. Standard creates a higher quality output with basic shadows. Full Lighting quality generates a fast (typically 15 minutes depending on system performance and scene complexity) medium quality output suitable for test viewing. Superior generates a nice high quality output and takes about an hour. Extreme generates the highest quality output and can take two hours or more. Start: After making your selections, hit the big Start button to begin the export and render process.
Export Options Panel Clicking the wrench icon button will invoke the LumenRT Export Options panel which contains several additional settings: Pedestal: This selects which type of ground plane to use underneath the model. If none is selected, the model will simply lay on top of an infinite ground plane. Smooth Motion: Indicates the degree of smoothing ranging from 0% (no smoothing) to 100% (fully smoothed) to apply to Sketchup animation paths exported into LumenRT. A
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LumenRT 3 – Reference Manual smoothed animation path will generally appear more natural than the standard linear Sketchup animation path. Adaptive lighting: This option becomes available when using a non-draft quality level. It is useful for improving the performance of lighting calculations on large models (e.g. models greater than 4,000 square meters or 40,000 square feet) with a tradeoff of reduced quality. When checked, the internal scale of the model is reduced to accelerate the lighting calculation and the result is rescaled back to its original size. The quality of the lighting produced will obviously be lower, but in many cases, the quality of the result remains acceptable.
You should not use this option for models that require a strong discrepancy in lighting quality, as the overall quality of the lighting will probably be reduced too strongly on the parts where quality is an issue (for instance, rendering a building with a large surrounding garden – while quality will be perfectly acceptable for the garden, lighting inside the building may suffer dramatically). Fast export: This option only appears on Sketchup Windows platforms.
When checked, this option increases the performance of the Sketchup model export and works well for models containing less than 200,000 faces. For models exceeding 200,000 faces, or for models that consume a great deal of memory (e.g. greater than 500 MB), or for any model that causes Sketchup to crash due to out-of-memory errors, unchecking this option improve export stability at the expense of speed (about 50 percent slower to export). The option should only be unchecked on very models that exhibit crashing problems when exporting from Sketchup.
Overwrite Files: Checking this box will direct LumenRT 3 to overwrite previously existing
LiveCube folders with the same name. If unchecked, LumenRT 3 will create a new LiveCube folder incremented by a numbered suffix (e.g MyModel_01).
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Sky Atmosphere Options The sky options set the type of atmosphere used to render the LiveCube scene. Each option contains a sky map which sets the appearance of the sky (e.g. clear, cloudy, etc) and the intensity of the direct lighting shadows produced by the sun. In LumenRT 3, there are two types of light. Direct lighting, also known as diffuse light, is light produced directly from the sun and typically produces dark shadows -- for example, the shadows on the ground where a wall obstructs the sun. Indirect lighting, also known as ambient light, is light that is reflected off of surfaces in the scene and produces very faint shadows – for example, the shadows you see in the corners of a room interior. LumenRT 3 produces output that contains both direct and indirect lighting. Brighter, sunnier atmospheres contain higher percentages of direct light and produce darker shadows than cloudier or neutral atmospheres which produce very faint direct shadows. Adjustable Time of Day: When this option is checked, LumenRT 3 will generate a clear blue sky atmosphere with a dynamic sun, allowing you to change the time of day in the Live Cube using the “G” and “H” keys. The sun position is calculated from the actual time zone, date and geo-position used in the Sketchup model.
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LumenRT 3 – Reference Manual Bad Weather: Thick, gray cloudy sky with a mostly ambient atmosphere. This atmosphere produces very light direct shadows.
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LumenRT 3 – Reference Manual Blue Sky: Bright blue clear sky with no clouds. Direct shadows are very strong.
Neutral White: Plain white atmosphere for a showroom type look. There are no direct lighting shadows produced.
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LumenRT 3 – Reference Manual Nice Weather: Cloud filled sunny summer sky with dark direct lighting shadows. Beautiful puffy
clouds cover the sky.
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Pedestals Pedestals provide a platform on which the SketchUp models rest in the LiveCube scene. The pedestals also show any direct ground shadows cast by the scene model. To eliminate ground shadows, or if your model already includes some form of “base”, you can select the No Pedestal option.
Asphalt: Parking lot material on a square pedestal. Grass: Green grass on a square pedestal. Sandy: Sand material on a square pedestal. White: Plain white material on an octagonal pedestal.
Difference in Export Rendering Quality LumenRT 3 offers a choice of rendering mode thresholds which vary by the degree of rendering quality offered and the amount of time needed to complete the render. In general, you should choose a rendering quality level that will deliver the quality you need with the least amount of rendering time. There are five export rendering quality modes available in LumenRT 3: Quality Mode
Rendering Time
Indirect Lighting/Shadow Quality
Draft
Under 1 minute
Fast screen-space occluded shadows
Standard
~ 5 minutes
Fast screen-space occluded shadows
Full Lighting
~ 15 minutes
High quality with indirect lighting
Superior
~ 1 hour
Superior lighting quality
Extreme
Very slow
For complex scenarios
Rendering time is an approximate time for a 100K face model running on a quad-core 3 GHz machine.
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LumenRT 3 – Reference Manual Draft quality generates a very fast preview that will render in under a minute. It contains fast screen space ambient occluded shadows. Draft mode is very useful as a quick test render, particularly for checking animation paths, the direction and intensity of direct lighting from the sun as well as material options. In most cases, you will not want to distribute Draft quality renders to others.
Standard generates a fast, quality render using an occluded indirect lighting calculation for
shadows. This is the primary, final quality mode used for scenes which have the adjustable time of day switch enabled. Standard mode quality renders will complete in around 5 minutes depending on scene complexity and the power of your system.
Full Lighting generates a medium quality render that will complete in 15 minutes or less depending
on scene complexity and the power of your system. It contains full indirect lighting and shadows that may appear rough or splotchy in some cases. Full Lighting quality will work just fine for many final productions, particularly for outdoor or exterior renders.
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LumenRT 3 – Reference Manual Superior generates a high quality render that will complete in around 1 hour or less depending on scene complexity and the power of your system. It contains high quality, smooth indirect lighting and shadows.
Extreme generates a very advanced lighting simulation that should be reserved for difficult lighting scenarios where artifacts appear in the other modes (for instance, when no direct light penetrates the volume).
In most cases, you will never need to use this rendering mode unless you have a complex indoor scene with lots of indirect lighting and no direct light. The pre-processor automatically generates a log file that is placed in the same folder as the LiveCube, inside the Scene sub-folder. The file is called LumenRT.log.
Animation Animation in LumenRT 3 allows full motion replay of a predefined camera animation path. This is very useful when you want to include a showroom style or kiosk type of guided walkthru. In addition, the sun position is fully animatable which allows the creation of time-ofday renders. Animation paths are created in SketchUp by using SketchUp scene tabs and setting the associated animation path properties. Each scene tab in SketchUp represents a single camera key frame. When aggregated together, the scene tabs create a full-motion camera animation path.
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LumenRT 3 – Reference Manual For more information on how to create scene tabs and animation paths in SketchUp, please visit http://sketchup.google.com/support/bin/answer.py?answer=151692 If the SketchUp model contains scene tabs, LumenRT 3 will automatically create an animation path derived from these tabs in a fashion similar to how SketchUp creates animations. The animation timing and hold frames are controlled by whatever timings are used in the SketchUp model. The animation path created in LumenRT 3 is a close approximation of the actual SketchUp animation path although there may be some minor differences. Using the Smooth Motion LumenRT option setting will generate a smoother, more natural looking animation path. The initial start or “home” position of the LiveCube will either be the first keyframe of the animation or the current camera position of the scene if no animation is present. You can save the camera animation by clicking the Save Animation button in the Help panel (see page 43).
Sharing the LiveCube The process of sharing LiveCubes with clients and coworkers is very simple and straightforward. It does not require any special viewing software or even a copy of LumenRT 3. Instead, a compressed, self executing copy of the LiveCube is created which is capable of being shared with anyone on a PC or Mac platform The compressed, self-executing file is very similar to a self-extracting zip file. By simply clicking on the file, the LiveCube will run automatically (you need to manually unzip the file on the Mac platform). The source LiveCubes are found in your Documents/e-on software/LumenRT 3 folder. Click the LumenRT 3.exe icon to run the LiveCube.
To create a sharable LiveCube, select the Publish option button from the LumenRT 3 help screen (Key F1). This will save the compressed file to a location of your choice. You can select the target
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LumenRT 3 – Reference Manual platform for the LiveCube from the drop-down box (Windows LiveCube, Mac LiveCube or both). Then, just e-email or FTP the shareable LiveCube to anyone you wish. Also, as useful aid to help your clients understand how to navigate inside the LumenRT 3 LiveCube, you can provide them with the following video link: http://www.lumenrt.com/navigationtutorial
Adding Your Logo over a Published LiveCube Splash Screen To add a custom logo in a published LiveCube, add a corresponding jpeg image file named UserLogo.jpg to the root of your exported source LiveCube folder (next to the LumenRT 3 launcher file), located in Documents/e-on software/LumenRT 3. This has to be done before clicking the Publish button from the LumenRT 3 navigator help screen. This will add your logo to the published LiveCube splash screen upon start.
Saving Stills and Animations LumenRT 3 lets you capture screenshots of the LiveCube anytime simply by pressing the F6 key. The screenshots are automatically anti-aliased and saved as Jpeg files in the LiveCube folder. Screenshots are automatically numbered in sequence. You can also save a canned animation file of the LumenRT 3 camera animation. This file can then be played back in any animation player. The movement is based on SketchUp camera views and delays (see above section on Animation, page 41). You can export the camera animation as a .AVI (on Windows) or .MP4V (on Mac) animation file. To generate the animation file, simply press the Save Animation button in the Help panel (press F1 to display this panel). Select the destination file from the File Selection dialog and press Save to save the animation file. Each frame will be sequentially rendered, anti-aliased and saved into the animation file. Depending on the duration of the animation and the power of your system, this process may take a while.
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Materials Materials are one of the primary factors for making a scene in LumenRT 3 look good. Using the right texture maps along with the proper material settings can dramatically improve the appearance and increase realism. LumenRT 3 material modification takes place directly inside of SketchUp using the LumenRT 3 Material Editor. Materials are either treated automatically (in the case of water and transparent materials) or by setting material properties as attributes using the LumenRT 3 Material Editor. The LumenRT 3 Material Editor is accessed by going to the Sketchup menu Plugins | e-on software LumenRT 3 | Edit Materials. The LumentRT Material Editor contains all of the active materials used in the Sketchup model. Each material is accessible from the Material drop-down control or by using the LumenRT 3 Material Picker to select materials from objects in the scene. Listed below describes how materials are treated and adjusted for LumenRT 3.
Water Water materials are designed to render materials for objects such as pools, ponds, and fountains. Any material containing the string “Water� (not case sensitive) in the SketchUp material name or has the Water property checked in the LumenRT 3 Material Editor will create a pulsating, water ripple effect in LumenRT 3. For example, a material with the name BlueWater will have the LumenRT 3 water effect applied automatically. The water produced in LumenRT 3 will also contain nice reflections increasing realism, but also taxing overall performance.
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Bump Bump adjusts the amount of bumpiness at the surface of the material. The bigger the value, the bumpier the surface. Bunp values can range from -900% to +900% in the LumenRT 3 Material Editor. LumenRT 3 automatically creates a grayscale version of the color map to generate the bump. Positive values will make the bump appear above the surface while negative values will make the bump appear below the surface. SketchUp materials starting with the name Stone, Brick or Roofing will have a bump of 5% applied.
Specularity Specularity describes the surface quality of the material (shiny or dull). The specular highlights create spots of light on the surface of the object, in the direction of the light sources. The smoother the surface, the more concentrated and bright the spots will be (e.g., think of polished marble). The highlights are built with two parameters: the intensity of the light spots that appear on the surface and the size of the spots. To add specular highlights to a material such as a shiny metal material, there are two settings that must be set. 1. Specular Amount sets the intensity of highlights. 0% indicates no specularity while a value of 100% indicates very intense speculat highlights. 2. Specular Shine sets the sheen of the specular highlights. 1% indicates very dull highlights while a value of 100% signifies a very shiny material. Listed below are common settings for a variety of materials: StainlessSteel: Amount=50% Shine=60% Plastic: Amount=25% Shine=20% Wood Floors: Amount=30% Shine=50% creates a wood floor with a nice waxy sheen
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Reflective Materials Reflective materials include objects such as glass and mirrors. Any material that contains some level of transparency (e.g when the SketchUp material opacity is less than 100%) will contain some degree of reflectiveness. This will produce realtime reflections in LumenRT 3 such as the sky reflecting on a pane of glass. In LumenRT 3, the Index of Reflectiveness (IOR) is set to a default value of 1.6 (glass) for all reflective surfaces. Mirror surfaces are set for any material containing the name “mirror� (not case sensitive) in the material name. Alternatively, the LumenRT 3 Material Editor can be used to set Mirror or Glass materials by checking their respective properties.
Texture Maps For materials that use texture maps, make sure that there is sufficient resolution in the map. A good rule of thumb is that maps should at least have a dimension of 256 x 256 pixels. Also, to improve performance, avoid using texture maps that are larger than 1024 x 1024.
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Animated Digital Nature Content One of the most important new features in LumenRT 3 is the ability to surround models with rich, high fidelity content that breathe life into your designs. Listed below are examples of the six categories of animated content available with LumenRT 3 and LumenRT 3 Content Pack.
Animals From dogs and cats to flying birds LumenRT 3 offers a rich variety of animals to populate your scenes with fully animated walk paths and natural movements.
Buildings Many simplified buildings offered in a variety of shapes ands sizes make great filler for midrange and background scenery.
People Dozens of fully animated characters sitting, standing, walking, and talking will help bring your scenes alive. Characters are arranged individually, in pairs, and small groups.
Plants Fully breeze animated trees and shrubs add a realistic visual context for your models. Choose from dozens of species and varieties in the LumenRT 3 Content Pack (sold separately). These plants are added as low poly models into the Sketchup scene but are automatically transformed into their high resolution counterparts in LumenRT.
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Vehicles Add cars and trucks to the scene. Choose the exterior color or let LumenRT 3 choose a random color.
Cyclorama Backgrounds Cycloramas provide midrange and background fill by encircling the entire scene with an alpha plane. They are quite useful for adding dense looking backdrops without taxing performance.
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Section 3
Going Further
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Tutorials Optimizing Large Models When creating LumenRT 3 Live Cubes, it’s important to ensure that SketchUp models are fully optimized for efficient rendering and navigation performance. This tutorial demonstrates how to optimize models containing a large number of faces and components for use with LumenRT 3. The key optimization factors involve the effective use of layers and hiding unnecessary geometries and components. You can follow along with this tutorial by downloading the demonstration model “Big House” by master SketchUp modeler Andres from the 3D Google Warehouse.
Step 1 Load the model into SketchUp.
Step 2 Examine and interrogate model info by displaying the model information window – Window | Model Info. Notice that this is a large model with over 100K faces which translates to well over 500K polygons (faces are exported as triangle polygons in LumenRT 3). The large poly count indicates that this model may experience rendering and navigation performance issues in LumenRT 3. So let’s try and optimize this model a bit.
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Step 3 Purge the model of any orphaned components and materials by clicking the Purge Unused button on the Model Info window. This will clean up the model by getting rid of any unused component definitions and materials. Also, there is a very useful free Sketchup plugin called “CleanUp” located in the Sketchucation Plugins forum: http://forums.sketchucation.com/viewtopic.p hp?f=323&t=22920 This plugin will do a more thorough cleanup of the model and reduce unnecessary items.
Step 4 This model contains very high poly trees and vegetation where the object components such as leaves are modeled as separate geometries. This will obviously cause a major increase in the polycount. Our choices here are to replace the vegetation with LumenRT plants which will automatically convert into high performance animated objects in LumenRT or to use billboards. In this case, we will replace the high-poly plant models with LumenRT plant objects.
Step 5 Turn off any other unnecessary layers and hide unnecessary components/geometry. In this case we are going to hide the interior furniture and replace the high poly cars with LumenRT Car objects.
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Step 6 Check for any stray geometry by zooming the model to fit the viewable area (right click Zoom Extents). The model should fit nicely in the viewable area. If the model does not fully zoom up, then you have some stray geometry in the scene. Either delete or hide the stray geometry.
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Materials Materials are a key factor for making high quality scenes in LumenRT 3. Using the right texture maps along with the proper material settings can dramatically improve the appearance and increase realism. You can follow along with this tutorial by downloading the demonstration model “Gables House with Interior” by master SketchUp modeler BmrCT from the 3D Google Warehouse.
Step 1 Load the model into SketchUp. This model (which has been slightly modified with the addition of a pool) contains a nice variety of materials including brick, wood, water, glass, and stone.
Step 2 Do a quick test render in LumenRT 3 by exporting the model using draft quality Plugins | e-on Software LumenRT 3 | Export Full Model and then select Draft quality. While the quality of the lighting and shadows is low in draft mode, you can still get a good idea of what each material will look like.
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Step 3 Examine the model in LumenRT 3 and take note of the appearance of each material. Does it look right? Do the materials need bump or specular highlights added? Do the glass and water materials look correct? After making some mental notes, return to SketchUp to edit and enhance the materials.
Step 4 Brick and Stone materials are automatically preset in LumenRT 3 to contain a small amount of bump (5%). In this case, we will increase the exterior Brick bump amount to 15% which will provide sharper details and reliefs.
Step 5 Select the brick material in the LumenRT 3 Material Editor (Plugins | e-on software LumenRT 3 | Edit Materials). Increase the brick bump amount by entering 15 into the Bump value box.
Step 6 Shiny materials such as plastic and leather will look more realistic by adding specular highlights. In this case, we add specular highlights to the leather seats in the living room. Select the Red Leather material and let’s add 30% specular with a shine of 50%.
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Improving Your LiveCubes SketchUp Modeling and Scene Optimization While LumenRT 3 can process any type of SketchUp model, it’s important to adhere to proper practices when constructing models in order to achieve optimal results. In general, if models are well constructed in SketchUp (e.g. air tight models, properly joined components, etc), then they will look good in LumenRT 3. Listed below are several tips for creating your models in SketchUp in order to optimize the final result in LumenRT 3.
Smoothing Curved Surfaces In SketchUp, all curved surfaces appear with some level of smoothing applied. However, these surfaces will appear to be unsmoothed in LumenRT 3 unless they are converted into groups or components. If you run across any condition as shown in the figure below, convert the object into a component or group to ensure that smoothing is properly applied.
Add Wall and Floor Thickness Adding thickness to walls and floors will improve the quality of shadows and light, especially for interior renders. If walls or floors are constructed primarily of single planar faces with no thickness, lighting artifacts such as light leaks may occur.
Avoid Degenerate Faces Avoid overlapping faces or putting two faces together with opposite normals or else LumenRT 3 will remove one of the two faces.
Avoid Very Large Surface Areas Because LumenRT 3 computes indirect lighting over the entire model, if your model encompasses large surface elements such as roads, parking lots, gardens, etc. the processing time will become extremely long as LumenRT 3 computes lighting for these elements.
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LumenRT 3 – Reference Manual A warning will automatically be displayed during processing if the surface area of your model exceeds 4,000 square meters (roughly 40,000 sqft). While LumenRT 3 is perfectly capable of handling large surface areas, you can greatly speed up the processing by not including large unecessary elements.
Eliminate Orphaned Geometry to Avoid Unusually Large Pedestals Delete or clean up all orphaned geometry or else the pedestal will be way too big in the scene compared to the model and processing times will suffer.
Use Groups, Components and Layers Keeping your model well organized by using groups, components, and layers provides greater ease and flexibility when deciding which sections of the model to export. Also, it's generally better to separate each part of the model in order to remove or change materials easily.
Use Real World Units LumenRT 3 lighting is based on real world units. To maximize realism, it’s critical that models are built at the full real world unit scale and proportions (e.g. 1:1 not 1:2 or 1:4).
Use Fewer Polygons Hiding unnecessary layers and getting rid of unneeded geometry will help to reduce the model size and improve overall interactive performance. There is a very useful free Sketchup plugin called “CleanUp” located in the Sketchucation Plugins forum: http://forums.sketchucation.com/viewtopic.php?f=323&t=22920 This plugin will do a very thorough cleanup of the model and reduce unnecessary items.
Export Only Part of the Scene LumenRT 3 only exports visible layers and nonhidden geometries so switching layers off and hiding geometries will reduce the model size upon export. Also, there is an option under the LumenRT 3 Plugin Export menu in SketchUp to export only a selected portion of the model for a more concise and efficient export.
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Add Thickness to Carpeting/Flooring Carpets and floors will look better in LumenRT 3 if they have a bit of thickness (1cm is a good thickness for example).
Keep Models above the Ground Plane Everything should be modeled above the SketchUp ground plane. Anything below the ground plane will not be visible in LumenRT 3.
Clean Ground Plane Intersections Avoid polygons that penetrate far underneath the ground plane. This can result in bad looking shadows around the intersecting corner or edge.
Use Planar Faces for Water and Glass Materials For a swimming pool, lake, or any water plane, use a planar face, and not a cube. Applying water to a cube or other non single plane object may produce odd results (double reflection, photons going through the floor, etc). The same is true when creating a glass or window surface -- it is better to have a single planar face instead of a cube.
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Avoid Using Fake Reflection Maps for Transparent Materials Do not simulate reflection on glass with maps. LumenRT 3 will handle reflections automatically for any material that contains transparency/translucency (i.e. materials that are not fully opaque).
Aim the Sun to Increase Interior Lighting Aim the sun to have light enter any rooms through windows for a more dramatic effect.
Initial Camera Position Is First Scene Tab or Current Camera View When exporting from SketchUp to LumenRT 3, the initial start or “home” position of the LiveCube will either be the first keyframe of the animation or the current camera position of the scene if no animation is present.
Use Perspective Camera Views LumenRT 3 uses real world perspective cameras so it’s important to use perspective cameras in SketchUp as well. SketchUp parallel or two-point perspective cameras will not look right in LumenRT 3.
Reduce the Number of Reflective/Transparent Materials Reducing the number of reflective and/or transparent materials will also improve interactive performance since these types of materials are very GPU intensive.
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Troubleshooting For the latest information on troubleshooting and solving LumenRT 3 issues, please visit the LumenRT 3 and Architectural user forums at http://www.cornucopia3d.com Listed below is a list of common problems you may have using LumenRT 3 along will suggested solutions:
Light Appears Around Wall Corners Sometimes it may happen that you see bright areas of light appear in corners or near the floor where there shouldn’t be any. This phenomenon is known as "light leak" and is an artifact usually caused by using walls or floors that are insufficiently thick. To correct this problem, make your walls and floor thicker (using a more ambient atmosphere such as the neutral white atmosphere may reduce this effect slightly).
Dark Shadows Appear at the Bottom of a Wall or in Corners If very dark and splotchy looking shadows appear at the base of a floor plane wall intersection, in most cases this is caused by the wall extending under the floor. Try trimming the wall exactly to the intersection of the floor plane to eliminate this problem. Likewise, if splotches appear around an object, you probably have faces of that object extending "inside" the object, and you should trim the faces so that they do not penetrate inside the object.
Large Objects Going Through Others Seem to Have Wrong Lighting It may happen that for some long & thin objects that go through others, the resulting lighting be awkward (either much too bright or much too dark). One way of improving this kind of situation is to force the host application to intersect these objects against the model before exporting, so its faces be properly cut according to potential lighting discontinuities in the final illumination solution.
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LumenRT 3 – Reference Manual In Sketchup, this is done by first exploding the problematic geometry so it doesn't belong to any component anymore, and then choose via the main menu Edit | Intersect Faces | With Model to perform the cuts.
Pre-Processing Takes Forever The mathematics involved in processing the illumination of a scene are very complex and time consuming, especially if the scene itself is complicated. Because LumenRT 3 computes indirect lighting over the entire scene, if your scene encompasses large surface elements such as roads, parking lots, gardens, etc. the processing time will become extremely long as LumenRT 3 computes lighting for these elements. You can greatly speed up the processing by not including large unnecessary elements or using the Auto-scale lighting option which will greatly improve performance with a tradeoff of reduced lighting quality. Also, if pre-processing appears to take abnormally long to process an otherwise reasonably sized model, make sure that no other processor intensive applications are running (because LumenRT 3 runs in the background, it will yield processing power to the other applications) and that your computer is not switching into power saving mode during processing.
Window Glass Is Blinking when Navigating in LiveCube If the windows in the LiveCube scene are blinking during navigation or animation, it most likely is caused by duplicated glass panes in your windows which causes multiple reflections bouncing off the glass. Although LumenRT 3 attempts to correct this automatically, there are some cases when you will have to remove the second glass pane manually. Making sure to create windows using a single planar face instead of a cube is a good way of eiliminating this problem.
Pedestal is too Big Compared to the Model Check to ensure that no small orphaned polygons are floating around the scene perimeter. Delete or hide these if possible.
Playback Performance in LiveCube is Slow or Choppy
the
If the LiveCube playback and navigation performance appears slow or choppy, first ensure that you or your clients are using a suitable modern graphics card. Slow-downs can occur if the scene contains a large number of faces (e.g. greater than 200,000) or if the scene has many reflective/transparent materials. Reducing the
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LumenRT 3 – Reference Manual number of polygons exported (e.g. turning off layers, hiding components) and reducing the number of reflective materials will improve performance significantly.
Some Faces Are Missing If some faces are missing from the scene, check to ensure that the polygons are not overlapping with other polygons containing opposite normals. Also, make sure that the area in question is receiving enough light. Faces that are found to be in pitch dark may be removed automatically by LumenRT 3 in order to speed up playback.
Flickering Polygons If you find that some polygons are blinking or flickering in the LiveCube it could be caused by a visual artifact phenomenon known as “Zfighting” when 2 polygons are overlapping and are at almost exactly the same distance and position from the camera. In this situation, the renderer doesn’t know which polygon to display first (since they are both at the same location) so the display just alternates back and forth between both polygons. To correct this, avoid coincidental overlapping polygons (increase the space between the polygons).
Object Surfaces are not Smooth Make sure when creating curved surfaces in SketchUp that they are made into a component, or group, and that the smooth normal option is checked in the SketchUp “Soften Edges” option.
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Splotchy Looking Shadow Artifacts If shadow artifacts appear, particularly near object corners and intersections, try using a higher quality render setting (e.g. from Full Lighting to Superior or Extreme). In addition, reaiming the sun or opening up the room to allow more light in can help to lessen shadowing artifacts. Also, make sure that light is able to find it way into your rooms. Leaving doors open is a good way of letting light in (and it also helps navigation). Another cause for this could be that the scene is simply too large (check that there are no orphaned polygons floating around the scene perimeter).
Water Material is not Rendering with Ripples or Caustics Make sure that the word “water” (case insensitive) appears somewhere in the material name and that the water material is transparent in SketchUp.
No Bumps (or Not Enough Bumps) on Objects Check to make sure that the material is using a texture map and that the bump settings are set in the material name (e.g. WoodFloorb=50%). You can increase the amount of bumps by raising the "b=xx%" value. Values beyond 100% are possible.
Noisy Looking Areas In some cases, if the area being viewed in LumenRT 3 is too dark, there may be some noise in the picture. Allowing more light to reach this area will solve the problem (e.g. by opening doors).
I Can’t Find my LiveCube File Please check in your software/LumenRT 3 folder.
Documents/e-on
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How Do I Launch the LumenRT 3 Application? LumenRT 3 operates as a SketchUp plug-in. In SketchUp, go to Plugins Plugins | e-on software LumenRT 3 to start the export and rendering process.
How Do I Avoid Having my LiveCube Files Overwritten? Please uncheck the “Overwrite Files” checkbox when exporting from SketchUp to LumenRT 3.
Animation Playback Pauses at Regular Intervals The model probably contains too many polygons – more than your graphics card can handle. However, you can try switching to full screen mode (alt + return key) to see if this improves performance (avoids screen synchronization problems). Otherwise, you will need to slim down the model.
Video Board Suddenly Not Supported If you lock your computer session shortly after launching a LumenRT 3 process, and before the LumenRT 3 pre-processing window appears, the application will not be able to start correcly and will report your video board as not supported (because it fails to create the required contexts due to locking your session).
Overly Saturated Indirect Light If the colorful light that is bounced onto walls feels a little too colorful and saturated to be real, this is probably because some of your materials in the scene use colors that cannot exist in reality. For instance, if you want to create a red wall, chances are you will create a 100% red color, with no green or blue, which, when looked at from a physical point of view, means that the material is bouncing back 100% of the red light that it received. In reality, this never happens. For instance, good quality paints will only bounce back about 80% of the light they receive. Although LumenRT 3 attempts to automatically limit this effect, the result of "impossible" colors may feel fake because of the way LumenRT 3 accurately simulates the physics of light. Turning down the saturation of your colors is a good way of avoiding this.
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Some Pictures Are Missing Pictures that are imported directly into SketchUp without being assigned to a material will not appear in the LiveCube. If some pictures appear to be missing, make sure that they are assigned to faces using a material.
LiveCube Refuses another System
to
Run
on
You cannot copy a LiveCube folder to another system and run it there. If you want to run a LiveCube on another system, you need to Publish the LiveCube first (see page 42).
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LumenRT 3 – Reference Manual
License Agreement THIS LICENSE AGREEMENT ("EULA") IS A LEGAL AGREEMENT BETWEEN YOU (EITHER AN INDIVIDUAL OR A SINGLE ENTITY), THE END USER, AND E-ON SOFTWARE, INC. IT IS A LICENSE AGREEMENT, AND NOT AN AGREEMENT FOR SALE OF THE PRODUCT ("PRODUCT")
LUMENRT 3. BY DOING ANY OF THE FOLLOWING, YOU AGREE TO BE BOUND BY THE EULA: INSTALLING, COPYING, DOWNLOADING, ACCESSING OR OTHERWISE USING THE PRODUCT, INCLUDING THE ACT OF REGISTERING THE PRODUCT (COLLECTIVELY REFERRED TO AS "USE"). TERMS OF THIS
THE PRODUCT MAY INCLUDE ASSOCIATED MEDIA, PRINTED MATERIALS, AND "ONLINE" OR ELECTRONIC ALL COMPONENTS OF THE PRODUCT ARE LICENSED TOGETHER AS A SINGLE PRODUCT. ITS COMPONENT PARTS MAY NOT BE SEPARATED FOR USE ON MORE THAN ONE COMPUTER OR SOLD SEPARATELY.
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LumenRT 3 – Reference Manual Any portion of the Product merged into or used in conjunction with another program will continue to be the property of e-on software, inc. and subject to the terms and conditions of this Agreement. You must reproduce and include the e-on software, inc. copyright notice on any portion merged in or used in conjunction with another program. Restrictions You may not rent, lend, lease, or assign the Product. You may, however, transfer on a permanent basis the entire Product, including all associated media and documentation. If you acquired the Product as an upgrade from another product (the "upgraded product"), you may not (i) transfer the Product without simultaneously transferring the upgraded product, or (ii) transfer the upgraded product without simultaneously transferring the Product. If you acquired the Product as part of a bundle with one or several other products, you may not (i) transfer the Product without simultaneously transferring all other products in the bundle, or (ii) transfer one or several other products in the bundle without simultaneously transferring the Product. When you make such transfer on a permanent basis, you may not keep any copies of the Product, and you must remove it from your hard drive(s). The person to whom you transfer the Product must agree to the terms of this License agreement. You must notify e-on software in writing of the transfer, including the name, permanent address, phone number and email address of the person to whom you transfer the software. You may not alter, modify, translate or adapt the Product. In addition, you may not de-compile, disassemble or reverse engineer the Product. You also may not create any derivative works based on the Product. A derivative work is defined as a translation or other form in which the Product may be recast, transformed or adapted. Content and Content Limitations You may distribute or otherwise sell images and animations generated using LumenRT 3 LiveCubes as well as published LumenRT 3 LiveCubes provided that you own the rights to the materials they contain. You may not distribute content included with LumenRT 3 or generated by LumenRT 3 in any other format or manner without the prior written authorization of e-on software. Term This license granted to you is effective until terminated. You may terminate it at any time by returning the Product to e-on software, inc. together with all copies, modifications, and merged portions in any form. The license will also terminate upon conditions set forth elsewhere in the Agreement, or if you fail to comply with any term or condition of this Agreement. You agree, upon such termination, to return the Product and the Documentation to e-on software, inc. together with all copies, modifications and merged portions in any form. Upon termination, e-on software, inc. can also enforce any rights provided by law. The provision of this Agreement which protects the proprietary rights of e-on software, inc. will continue in force after termination. Termination of this license, either voluntary or involuntary, does not entitle you to a refund of your purchase cost except as provided elsewhere in this License Agreement. Limited Warranty E-on software, inc. warrants, as the sole warranty, that the original medium on which the Product is distributed are free from defects in material and workmanship under normal use and conditions for a period of thirty (30) days from the date of the purchase, as evidenced by a copy of your receipt. No distributor, dealer, or any other entity or person has authorization to expand or alter either this warranty or any term of this Agreement. Any such representations will not bind e-on software, inc. You agree that in order to qualify for any technical or customer support, including any replacement of any component of the Product under the terms of this Agreement, you need to have registered the Product first with e-on software. E-on software, inc. does not warrant that the functions contained in the Product will meet your requirements, or that the operation of the Product will be uninterrupted and error-free. Except as stated above in this section, the Product
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