NAME

VG_Arc — agar-vg arc entity

SYNOPSIS

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

DESCRIPTION

VG_Arc is a VG(3) node class which describes an arc in terms of a centerpoint, radius and and two angles.

INTERFACE

VG_Arc *
VG_ArcNew(VG_Node *parent, VG_Point *centerPoint, float r, float a1, float a2);

void
VG_ArcCenter(VG_Arc *va, VG_Point *centerPoint);

void
VG_ArcRadius(VG_Arc *va, float r);

void
VG_ArcAngles(VG_Arc *va, float a1, float a2);

The VG_ArcNew() function creates a new arc entity attached to parent. centerPoint is a VG_Point(3) defining the center of the arc and r is the radius. The starting and ending angles are specified by a1 and a2, in radians.

The VG_ArcCenter() routine changes the centerpoint of an existing VG_Arc. VG_ArcRadius() changes the radius. VG_ArcAngles() changes the angles.

SEE ALSO

VG(3), VG_Circle(3), VG_Point(3)

HISTORY

The VG_Arc class first appeared in Agar 1.3.3.