When the line is parallel to the boundaries then what is the value of pk?(a) pk 0(c) pk = 0(d) pk = 1I have been asked this question during an interview.This interesting question is from Liang-Barsky Line Clipping topic in section 2D Transformation and Viewing of Computer Graphics

When the line is parallel to the boundaries then what is the value of

1.	When the line is parallel to the boundaries then what is the value of pk?(a) pk < 0(b) pk > 0(c) pk = 0(d) pk = 1I have been asked this question during an interview.This interesting question is from Liang-Barsky Line Clipping topic in section 2D Transformation and Viewing of Computer Graphics
Answer» Correct choice is (c) pk = 0 The EXPLANATION: When pk < 0 line starts exceeding the boundary while if pk > 0 line is BOUNDED inside the boundary. When the line is PARALLEL then pk = 0.

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