General pivot point rotation can be expressed as _____________________(a) T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ)(b) T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)(c) T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)(d) T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,Q)I have been asked this question in a job interview.I would like to ask this question from Composite 2D Transformations in chapter 2D Transformation and Viewing of Computer Graphics

General pivot point rotation can be expressed as _____________________

1.	General pivot point rotation can be expressed as _____________________(a) T(zr,yr).R(θ).T(-zr,-yr) = R(xr,yr,θ)(b) T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ)(c) T(xr,yr).R(θ).T(-xr,-yr) = R(zr,yr,θ)(d) T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,Q)I have been asked this question in a job interview.I would like to ask this question from Composite 2D Transformations in chapter 2D Transformation and Viewing of Computer Graphics
Answer» The CORRECT answer is (b) T(xr,yr).R(θ).T(-xr,-yr) = R(xr,yr,θ) EXPLANATION: Since the FIRST two parameters are in 2D, HENCE only ‘x’ and ‘y’ can be variable along with ‘θ’. In other options, there is one more parameter ‘z’.

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