In Quartz 2D Programming Guide, see:
CGLayer Drawing
Creating a Window Graphics Context
Masking an Image by Clipping the Context
Obtaining a Graphics Context for Printing
Patterns
Paths
Setting Blend Modes
Transforms
See these reference documents:
CGAffineTransform Reference
CGContext Reference
CGGeometry Reference
CGImage Reference
CGLayer Reference
CGPath Reference
HIView Reference
HIShape Reference
For those interested in image processing, see Core Image Programming Guide.
Last updated: 2006-09-05