Draw Module Overview

Programmer's Reference Manuals

» Part 8 - Non-kernel input/output

» Draw Module

» Overview

Overview

The Draw Module provides vector-graphics drawing, based on MOVE/DRAW and Bezier curve
primitives; much like a subset of Postscript. A sequence of primitive operations is called a path. Objects can be obtained by grouping paths.

Paths and objects can be manipulated in a number of different ways. A comprehensive list of options is provided below:

• Rotation, scaling and translation of the path
• Thickness of a line
• Description of dots and dashes for a line
• Joins between lines can be mitred, round or bevelled
• Leading or trailing ends of a line can have the following shapes; butt, round, squared or triangled
• Filling of arbitrary shapes
• Fill the interior of a shape

A path can be manipulated directly on screen or in memory using different sets of SWIs.