NAME

VG_Polygon —

agar-vg polygon entity

SYNOPSIS

#include <agar/core.h>
#include <agar/gui.h>
#include <agar/vg.h>

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.