4.1. 3-D   

Transformations in 3-D are 


                  Translation

                  Scaling

                  Rotation about x - axis

                  "       "  y - axis

                  "      "  z - axis

and can be performed by 4 x 4 matrix multiplication (See Van Dam and Foley Chapter 7 )


Total Transformation = [ ]. [ ]. [ ] ...... = T1 . T2 . T3 . i.e if rotate, then scale, then rotate => R1 . S . R2

[newx, newy, newz, 1 ] = [x,y,z,] . [Trans matrix]  

axes.ps

Can use the following to convert between out of page positive z to into page negative z.