func PopClip() {
	if len(canvas.clipStack) == 0 {
		return
	}
	c := canvas.clipStack[len(canvas.clipStack)-1]
	canvas.clipStack = canvas.clipStack[:len(canvas.clipStack)-1]
	SetClipRect(c.x, c.y, c.w, c.h)
}
func PopClip() {
	if len(canvas.clipStack) == 0 {
		return
	}
	c := canvas.clipStack[len(canvas.clipStack)-1]
	canvas.clipStack = canvas.clipStack[:len(canvas.clipStack)-1]
	SetClipRect(c.x, c.y, c.w, c.h)
}
func PopClip ( ) { if len ( canvas . clipStack ) == 0 { return } c := canvas . clipStack [ len ( canvas . clipStack ) - 1 ] canvas . clipStack = canvas . clipStack [ : len ( canvas . clipStack ) - 1 ] SetClipRect ( c . x , c . y , c . w , c . h ) }
// PopClip restores saved with PushClip clipping window
PopClip restores saved with PushClip clipping window