D = hatch (D, R) fills the geom.Region R with a hatch pattern, its holes left clear. The region may have arcs and splines; a polygon is made into one with geom.Region (P):

 R = geom.Region ([0, 0; 60, 0; 60, 40; 0, 40], ...
                  {[20, 20, 1; 40, 20, 1]});
 D = draw.Drawing ().hatch (R);

PATTERN names the fill and defaults to 'ANSI31', the 45-degree hatch that means cut material; geom.hatchlines () lists the names. ANGLE rotates the pattern, in degrees, and SPACING sets the line spacing in millimetres; the two are given together.

A drawing is flat, so R must lie in its xy plane. Its geom.UCS may have its own origin and x axis there and may face down: the drawing keeps the same region, re-expressed in its own coordinates.

See also: draw.Drawing.region, geom.Region, geom.hatchlines

Source Code: draw.Drawing