DR START POLYGON

version 6.0

DR START POLYGON (area)

Parameter	Type		Description
area	Longint		4D Draw area

The command DR START POLYGON begins a new polygon for area. This command tells 4D Draw to create a space in memory for building the new polygon. The polygon is incomplete, and is therefore not drawn, until a matching call to DR End polygon is made. If a polygon is already in progress, DR START POLYGON starts the drawing process again.

The following example creates diamond-shaped polygon.

   DR START POLYGON (Area)
   DR POLYGON LINE (Area;1.5;1;0)
   DR POLYGON LINE (Area;2;1.5;0)
   DR POLYGON LINE (Area;1.5;2;0)
   DR POLYGON LINE (Area;1;1.5;0)
   DR POLYGON LINE (Area;1.5;1;0)
   $ID := DR End polygon (Area)

DR End polygon, DR POLYGON CURVE, DR POLYGON LINE.