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3D Primitive and Composite Transformations
Previously you have studied and implemented 2D geometric transformations for object definitions in two dimensions. These transformations can be extended to 3D objects by including considerations for the z coordinate. In this unit, you will study certain methods to implement such transformations.
You must have noticed here that the translation is as simple as in 2D. Rotation however requires a little more effort in 3D. Standard rotations about three coordinate axes are simpler to perform. In order to apply rotation about an arbitrary axis, you need to have a composite transformation while scaling, shear and reflections are generalized to 3D in a natural way.
2-D Viewing and Clipping - Raster Graphics and Clipping In the previous two units of this block, we illustrated the basic elements of computer graphics, that is, the hardware
Unrepresentative vertex normals - Modeling and Rendering Calculated vertex normals may not adequately present the surface's geometry. For illustration, if we calculate vertex
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What is the need of homogeneous coordinates? To perform more than one transformation at a time, use homogeneous coordinates or matrixes. They decrease unwanted calculations in
In contrast to depth-buffer method, here we identify one surface at one time, scan-line method deals along with multiple surfaces. Since it processes each scan-line at one time, al
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What is the full form of IGES?
Animation Tools: Hardware tools: PCs ,Macintosh, Amiga Software tools: - Softimage ( Microsoft) ; - Alias/ Wavefront ( SGI) - 3D s
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