Programmer Guide/Command Reference/EVAL/pginit

Usage:

P := pgInit( {pg_cplist}X, {number}N=0, {number}E=0 )

Function:

Initialize polygons from a closed-point-list

Parameters:

X

A point-list defining one or more polygons.

N

The requested number of simple polygons:

N<=0 - unknown, computed during initialization

N>0 - exactly N simple polygons must be contained in X

E

The maximum error for polygon simplification, if E<=0 the simplification is skipped.

Result:

A polygon-stream P containing all simple-polygons defined by X.

If N>0, the number of polygons defined by X must be equal to N.

Examples:

See the example macro polygon_stream in the example script polygon_examples.sts.