Question

Which of the following represents shearing?

(a) (x, y) → (x+a, y+b)

(b) (x, y) → (ax, by)

(c) (x, y) → (x cos(θ)+y sin(θ), -x sin(θ)+y cos(θ))

(d) (x, y) → (x+ay, y+bx)

I have been asked this question in an interview for internship.

Enquiry is from 2D Reflection and Shear in division 2D Transformation and Viewing of Computer Graphics

Answer 1

Right answer is (d) (x, y) → (x+ay, y+bx)

Easy explanation: The first one represent translation, the second one represents scaling, third one rotation and the last one is representing shearing.