Thursday, November 24, 2011
Assignment 4 Clarification
I have confirmed a couple of things about the assignment that many of you were wondering about. First of all, before starting task two, you should set the scaling of the earth object to be (1,1,1) again. Answer all the questions up until 4.2 using this value. Then change it to (0.1, 1, 0.1). The question about what issue you observe and how to fix it is directly related to the midterm question on world inverse/tranpose matrix. An answer of "don't scale it that way" is not correct, because of course you might actually want to scale it that way. Think about what happens with the normals when you scale the sphere and whether they remain perpendicular to the surface.