Question

Perform a 450 rotation of a triangle a (0,0), b (1,1), c (5,2) about an arbitrary point p(1, 1).

Answer 1

1. What do you understand by geometric transformation? Also define the following

operation performed by it-

a. Translation.

b. Rotation.

c. Scaling.

d. Reflection.

2. Explain two dimensional Translation and Scaling with an example.

3. Obtain a transformation matrix for rotating an object about a specified local

point.

4. Explain DDA line drawing algorithm.

5. Explain the steps in midpoint ellipse drawing algorithm.

6. What is polygon clipping? Explain Sutherland-Hodgeman algorithm for

polygon.

7. Consider a triangle ABC whose coordinates are A[4,1], B[5,2], C[4,3]

a. Reflect the given triangle about X axis.

b. Reflect the given triangle about Y-axis.

c. Reflect the given triangle about Y=X axis.

d. Reflect the given triangle about X axis.