Lectures 4/5

Question 1

What’s a gimbal lock?

Answer 1

If we consider each rotational axis to be a gimbal, if they’re rotated in such a way that two axes end up on top of each other then these axes must then be rotated together. Changing order of rotation switches problem to another axis.

Question 2

What are homogenous coordinates?

Answer 2

These are used so that every transformation can be done by same GPU with matrix multiplication.