Polygonal 3D Modeling – Some processes you must be acquainted with Polygonal modeling is the process of creating a digital depiction of 3D objects using a geometric mesh comprised of vertices, edges and faces. The below processes are those which every company offering 3D services must master.
Extrusion This is the method by which geometry is added to a polygon primitive. Through the process of extrusion, experts in professional companies manipulate 3D mesh either by extruding the surface out alongside its external normal or by subsiding a face on itself. In extrusion process, 4 new polygons are created for bridging the opening between its beginning and finishing positions. Extrusion is also possible for edges and during this process, duplication of edges takes place which can be rotated in any desired direction. This creates a new polygonal face.
Subdividing The 3D modeling service providers use subdividing for selectively or homogenously adding polygonal resolution to the concerned model. Some extent of subdivision must be there for creating a finished model as any polygonal model normally begins with very less faces and lowresolution primitive. With uniform subdivision, surface blocking can be eliminated and evenly smoothened. Selective placement of extra edge loops is required normally in enhanced body parts like elbows, knees, eyes and lips of characters. Read more about SketchUp- How can you effectively use it for 3D modelling?
Chamfers or bevels You may have heard about bevel if you are in anyway related to woodworking, industrial design or engineering niches. Edges in a 3D model are sharp infinitely. This however can never happen
in the actual world. If you inspect carefully the objects around you, it can easily be found that almost all edges have some or other type of roundness or unevenness to it. Charmers or bevels consider this fact with peek relevance and reduces the severity of model edges.
Refining or shaping Refining or shaping is many times also referred as pulling and pushing of vertices. Most of the models need certain level of refinement that has to be done manually. While refining, the service provider moves each vertices for fine-tuning the surface contours. Refinement is the longest process for any services provider and according to the popular companies offering related services, nearly 90% of the time is spent for refining. In fact this is the process that immensely influences the output quality. Being acquainted with the above processes and gaining proficiency in them can surely help any 3d modelling service provider to stay unbeaten in the increasing competition.