In the context of 3D computer graphics, which of the following statements…
2019
In the context of 3D computer graphics, which of the following statements is/are true?
P : Orthographic transformations keep parallel lines parallel.
Q : Orthographic transformations are affine transformations.
Select the correct answer from the options given below:
Answer: A. Both P and Q — Answer: Both statements are true. Orthographic transformations keep parallel lines parallel because they are parallel projections that do not use perspective…
- A.
Both P and Q
- B.
Neither P nor Q
- C.
Only P
- D.
Only Q
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Correct answer: A
Answer: Both statements are true.
Orthographic transformations keep parallel lines parallel because they are parallel projections that do not use perspective division; they map parallel lines in 3D to parallel lines in the projection plane.
Orthographic transformations are affine transformations since they can be represented by a linear projection matrix (a linear map is a special case of an affine map).
Therefore the correct choice is: both statements are true.