Dibujo Digital - Entrega Final

Andrés David Buitrago 201328068

TOYO ITO – TODS OMESTANDO

1. GRASSHOPPER MODEL Part 1: the geometry of the building 1. I began by creating a series defined by the height and number of floors.

2. Then, creating a set of planes in the z dimension 3. Connecting those planes to a rectangle and connecting two sliders to control the size of it.

4. Loft the rectangles 5. Create a tool to select one faรงade at a time as learnt on the twisted tower exercise.

-Explode the loft.

-With list item select one face, control the item input with a slider

Part 2: Analyzing the image of the faรงade.

1. For this I modified this image to make it pure black and white.

Before:

After:

225 px

763 px

2. Create two sliders with the wide and the height of the image in pixels.

3. Connect the sliders to the c input on the two sliders 4. Cross reference both sliders and connect to create a set of points

5.

Connect those points to the image sampling tool. Load the image with the original dimensions.

6.

The analysis gives 1 for white and 0 for black.

7. With the integer command round the values to 0 and 1. Multiply by a number (10). Connect to a Z vector 8. With the move command move the points using the Z vector.

Only the black points will move.

9. Create a surface from that set of points with surfacegrid.

10. Section the surface with section brep command to create curves.

11. Create control points on curve.

12. Decrease control points by dividing by a number. Then Use the command rebuild curve to create a curve with less control points, easier to manipulate.

13. It is important the number dividing. For instance: -Bigger number. Curves start loosing its shape.

Vs Smaller number

Part 3: a tool to select part of the image.

1. Create a rectangle with x as 225 2. Extrude using a Z vector.

3. Finish the box with the cap command.

4. Connect a xy plane to the P input.

5. Controll the origin of the plane with sliders connected to a point.

6. The z coordinate has to be slightly below the plane of the curves.

7. Trim the curves of the image using the box controlled by the sliders.

Part 4: Mapping the curves on the building.

1. Connect the curves inside the brep to a map surface command.

2. Create a Boundary from the rectangle of the selection box.

3. Connect the list item (the faรงade selected) to the target input.

The first attempt the faรงade was rotated.

Solution: Rotate the curves:

4. Connect the resulting geometry to the trim command.

5. Extrude the curves.

6. Surround the curves with a box

7. Depending on the orientation of the faรงade, extrude it on the X or Y axis.

8. Bake the extrusion and the bounding box.

8. Select another faรงade. Move the selecting box tool and bake the other facades.

Wireframe

Shaded view.

Part 5: printing and laser cutting.

1. On rhino Rotate 3d.

2. Repeat with each faรงade.

3. Organize.

4. On Rhino use the command make2d

Difficulties: On the first attempt using the method of the twisted tower (Sbox and culling the false parameters, in this case, the black pixels) it didn’t work.

2. PHYSICAL MODEL Material: Carton Craft 1mm Laser cutted.

Difficulties: I didn’t create a way of assembling the facades, so I had to glue them. Initially it was supposed to look like this.

And because the material is so thin there was not enough area to glue the facades easily.

3. CONCLUSION

To sum up, I was satisfied with the result of this exercise, but if I had to build the parametric model again I would create a set of commands with grasshopper to create mechanical unions in the vertices of the façade. Also, between the floors and the façade, so I wouldn’t have to use glue to join the parts of the physical model afterwards.

To me, the parametric modeling has a great number of advantages. First of all, parametric modeling makes it easier to think and create in 3d working on a computer, because you can modify an infinite range of variables quickly and see the outcomes in real time. Second, it saves time when you need to change certain variables because you don’t have to remake the entire model. Third, you can reuse the model, for instance, I can sample a different black and white image and map it to a geometry to create an entirely different building.

On the other hand, parametric modeling also has some limitations and difficulties.

The main one it’s that creating a parametric model takes time and effort to learn how to use the commands, and it can be confusing at times. Also, when working with a lot of variables the program can crash.