VG_Polygon is a VG(3) node class which describes a filled polygon with VG_Point(3) entities as its vertices.
VG_Polygon * VG_PolygonNew (VG_Node *parent)
Uint VG_PolygonVertex (VG_Polygon *P, VG_Point *pt)
void VG_PolygonDelVertex (VG_Polygon *P, Uint vtx)
The VG_PolygonNew() function creates a new polygon entity attached to parent, without any vertices.
VG_PolygonVertex() creates a new vertex using the existing VG_Point(3) pt. The index of the new vertex is returned.
VG_PolygonDelVertex() removes the specified vertex vtx from the polygon. The function is a no-op if vtx is an invalid index.
VG_PolygonSetOutline() disables filling of the polygon such that only its outline is displayed. Default behavior is to display a filled polygon.
The VG_Polygon class first appeared in Agar 1.3.3.