@jamis

I bought the book some years ago and did through a lot of it, but wanted to revisit it from scratch again, as a more experienced programmer.

However, for the test of multiplying a rotation X matrix of pi/2 radians by a Point(0, 0, 1), it fails generating a point where the y component is ~-4.4. Interestingly, the test after for multiplying the inverse(rotation_x(pi/4)), my code passes that test.

I’m hoping to work on my math skills, but I’m not sure exactly where I should be focusing my debugging efforts, or what tests to catch potentially if theere’s some other issues with dependent code that I missed.

Thanks again for a great book