Hello all!

Thanks in advance for looking at this for me.

I seem to missing a step somewhere as I am working through the example provided by this book.

Mathematics for 3D Game Programming and Computer Graphics - Eric Lengyel - Google Books

The link shows the exact problem and solution. I am having a hard time understanding how the matrix in figure 2.18 transitions into the matrix shown in figure 2.19. I have been stumped on this for literally hours working ahead and back again trying to get my work to match the examples. Hopefully, Im not just having a brain fart, but I was hoping someone would be able to provide a better explanation, specifically what we are doing the the first row of the matrix when the text saw we are effecting the second row.

Thanks

Glock