Question

Scaling of a polygon is done by computing

(a) The product of (x, y) of each vertex

(b) (x, y) of end points

(c) Center coordinates

(d) Only a

The question was asked in an interview for internship.

My question comes from 2D Scaling in chapter 2D Transformation and Viewing of Computer Graphics

Answer 1

Right answer is (d) Only a

Explanation: Scaling of a polygon is done by computing the product of (x, y) of each vertex with scaling factor sx and sy to produce the transformation coordinates ( Xnew, Ynew).