Q. Shown below is the unfolded cube map of six faces. Suppose that a reflection ray is
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Q. Shown below is the unfolded cube map of six faces. Suppose that a reflection ray is computed and its direction is along (0.5, 0.4, −0.2).
sorry for weird rotated picture. I can't rotate properly.
(a) Which face of the cube map does the reflection ray hit?
A. face +x is selected.
(b) What are the 2D coordinates of the intersection point between the reflection ray and the face?
A. The point hit by R has the yz -coordinates (0.8, −0.4) at face +x.
(c) Compute the texture coordinates corresponding to the intersection point.
A. (0.3, 0.9)
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