We are learning about several different 3D object representations, including polygonal
meshes, spline surfaces, subdivision surfaces, constructive solid geometry, BSP trees,
voxels, points, and image-based representations. Of course, no one of these
representations is best for describing every type of object, for every operation, in every
application. For each of the following situations, please describe which object
representation(s) you think is best for the object written in capital letters, and give a
one or two sentence explanation why.
- Rendering images of a CLOUD for a movie.
- Interactive walkthroughs of the interior of the LOUVRE for virtual travel.
- Interactive visualization of the exterior of the next model MERCEDES for design
evaluation.
- Interactive visualization of the interior of a proposed (not yet constructed) BUILDING
design.
- Interactive visualization of a TEDDY BEAR with long fur for a video game.
- Finding interferences (intersecting parts) in a proposed AIRPLANE engine design
(e.g., finds pipes passing through one another).
- Checking for accessibility to different parts in a proposed AIRPLANE engine design
(e.g., whether or not a repair person can reach a part with his/her hand)
- Specifying the description of a new automobile CRANK SHAFT comprising
rods, gears, and sockets.
- Determining the differences between two 3D models of a DESK.
