Draw (changes)

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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 SWI calls.

Details

• Technical Details
• Draw Path Block
• Draw Fill Style
• Draw Dash Block
• Draw Join_Cap Block

• SWI Calls