QuickTime 4 Reference

Color in QuickDraw GX

In QuickDraw GX, color information about a shape is kept in the ink object associated with the shape object. A shape's ink object describes both the color of the shape and the transfer mode with which the shape is drawn.

Note
For QuickTime vectors, color information is used for transfer modes. These are described in "Transfer Modes" .

QuickDraw GX has a powerful, device-independent method for representing color in many different formats. Conversion among the formats is simple and direct, and in many cases automatic. QuickDraw GX also provides automatic manipulation of device-specific colors so that colors match consistently when scanned from or drawn to many different imaging devices.

This section describes how color is represented and how you can manipulate color information. It presents the information in this order:

Colors are numerical values that make sense only in terms of specific color spaces. Color spaces are described first, under "Color Spaces" .
The mathematical values used by each color space are combined with other information to make a color structure. How color values relate to the color structure is described second, under "Color-Component Values, Color Values, and Colors" .

Color Spaces