func (self *Surface) StrokeExtents() (left, top, right, bottom float64) {
var x1, y1, x2, y2 float64
px1 := (*C.double)(&x1)
py1 := (*C.double)(&y1)
px2 := (*C.double)(&x2)
py2 := (*C.double)(&y2)
C.cairo_stroke_extents(self.context, px1, py1, px2, py2)
left = float64(*px1)
top = float64(*py1)
right = float64(*px2)
bottom = float64(*py2)
return
}
func (self *Surface) StrokeExtents() (left, top, right, bottom float64) {
C.cairo_stroke_extents(self.context,
(*C.double)(&left), (*C.double)(&top),
(*C.double)(&right), (*C.double)(&bottom))
return left, top, right, bottom
}
// StrokeExtents is a wrapper around cairo_stroke_extents().
func (v *Context) StrokeExtents() (x1, y1, x2, y2 float64) {
var cx1, cy1, cx2, cy2 C.double
C.cairo_stroke_extents(v.native(), &cx1, &cy1, &cx2, &cy2)
return float64(cx1), float64(cy1), float64(cx2), float64(cy2)
}
//StrokeExtents computes a bounding box in user coordinates covering the area
//that would be affected, (the "inked" area), by a Stroke operation given the
//current path and stroke parameters.
//If the current path is empty, returns the empty rectangle ZR.
//Surface dimensions and clipping are not taken into account.
//
//Note that StrokeExtents must necessarily do more work to compute the precise
//inked areas in light of the stroke parameters, so PathExtents may be more
//desirable for sake of performance if non-inked path extents are desired.
//
//Originally cairo_stroke_extents.
func (c *Context) StrokeExtents() Rectangle {
var x1, y1, x2, y2 C.double
C.cairo_stroke_extents(c.c, &x1, &y1, &x2, &y2)
return cRect(x1, y1, x2, y2)
}