AFL Function Reference

Low-level graphics
(AmiBroker 50)

SYNTAX	GfxArc( x1, y1, x2, y2, x3, y3, x4, y4 )
RETURNS	NOTHING
FUNCTION	Draws an elliptical arc. The arc drawn by using the function is a segment of the ellipse defined by the specified bounding rectangle. The actual starting point of the arc is the point at which a ray drawn from the center of the bounding rectangle through the specified starting point intersects the ellipse. The actual ending point of the arc is the point at which a ray drawn from the center of the bounding rectangle through the specified ending point intersects the ellipse. The arc is drawn in a counterclockwise direction. Parameters x1 - x-coordinate of the upper left corner of the bounding rectangle y1 - y-coordinate of the upper left corner of the bounding rectangle x2 - x-coordinate of the lower right corner of the bounding rectangle y2 - y-coordinate of the lower right corner of the bounding rectangle x3 - x-coordinate of the arc's starting point. y3 - y-coordinate of the arc's starting point. x4 - x-coordinate of the arc's ending point. y4 - y-coordinate of the arc's ending point. NOTE: This is LOW-LEVEL graphic function. To learn more about low-level graphic functions please read TUTORIAL: Using low-level graphics.
EXAMPLE	`GfxSelectPen( colorRed ); GfxArc(100,0,200,100,150,0,200,50);`
SEE ALSO	GfxChord() function , GfxPie() function , GfxSelectPen() function

The GfxArc function is used in the following formulas in AFL on-line library: