Transformations
Default coordinate system is Y-down (origin at top left), one unit is one pixel
Viewport maps an area in world coordinates to an area on screen
Transformations alter the coordinate system
2x3 transformation matrix for computers
Translate, rotate, scale, skew for humans
Chris Lilley
Default
coordinate system is Y-down (origin at top left), one unit is one pixel
Transformations alter the coordinate system
