Matrixes In Graphics

• Matrixes store significant endpoints of images
• Each pair of entries = edge

[x0 x1 x2 xN]
[y0 y1 y2 yN]
[z0 z1 z2 zN]
 P0 P1 P2 P3

Matrix Multiplication

The column of the first = the row of the second Set Z to zero for now Make sure that if you're coding in C, make the matrixes doubles
Note that this example is basically matrix * itself, if you multiply by a zero matrix, it will erase your entire matrix

0[1 0 0]   [x0 x1 xN]
1[0 1 0] * [y0 y1 yN]
2[0 0 1]   [z0 z1 zN]

Ex.

[4 0 0]   [x0 x1 xN]   [4x0 4x1 4xN]
[0 3 0] * [y0 y1 yN] = [3y0 3y1 3yN]
[0 0 2]   [y0 y1 yN]   [2y0 2y1 2yN]

Note, the average matrix should look like this:

The [1 1 1] needs to be there through the entire matrix, put it there for now, explanation for why will come later

[x0 x1 xN]
[y0 y1 yN]
[z0 z1 zN]
[1  1  1]