1. Define Projection?
The process of converting the description of objects from world coordinates to viewing coordinates is known as projection. The process of displaying 3D into a 2D display unit is known as projection. The projection transforms 3D objects into a 2D projection plane
2. What are the steps involved in 3D transformation?
• Modeling Transformation
• Viewing Transformation
• Projection Transformation
Workstation Transformation
3. What do you mean by view plane?
A view plane is nothing but the film plane in camera which is positioned and oriented for a particular shot of the scene.
4. List out the 3D Issues?
More Complicated Objects than 2D More involved geometric transformations
Viewing transformations much more complicated Projection onto a two dimensional output display (usually) Identification of Visible Surfaces
5. What you mean by parallel projection?
Parallel projection is one in which z coordinates is discarded and parallel lines from each vertex on the object are extended until they intersect the view plane.
6. What do you mean by Perspective projection?
Perspective projection is one in which the lines of projection are not parallel. Instead, they all converge at a single point called the center of projection.
7. What is Projection reference point?
In Perspective projection, the lines of projection are not parallel. Instead, they all converge at a single point called Projection reference point
8. Define computer graphics animation?
Computer graphics animation is the use of computer graphics equipment where the graphics output presentation dynamically changes in real time. This is often also called real time animation.
9. What is two lining?
It is the process, which is applicable to animation objects defined by a sequence of points, and that change shape from frame to frame.
10. Define frame?
One of the shape photographs that a film or video is made of is known as frame.
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