void SetSurface(cairo_surface_t *surface, int width, int height);
void SetSurface(ImageBuffer &img);
void CreateSvgSurface(String const &filename, double widthInPoints = 595, double heightInPoints = 841); 
void CreatePdfSurface(String const &filename, double widthInPoints = 595, double heightInPoints = 841);

void DoRect(SDraw &sw, double size)
{
	if(size < 0.5)
		return;
	
	sw.Move(0, 0);
	sw.Line(0, size);
	sw.Line(size, size);
	sw.Line(size, 0);
	sw.Fill(Blue());
	
	sw.Begin();
	sw.Translate(0, size);
	sw.Rotate(M_PI/4.);
	DoRect(sw, size / M_SQRT2);
	sw.End();

	sw.Begin();
	sw.Translate(size / 2, 1.5 * size);
	sw.Rotate(-M_PI/4.);
	DoRect(sw, size / M_SQRT2);
	sw.End();
}

void DrawPythagorasTree(Size sz, SDraw *sw, Cairo *ca)
{
	double size = 128;
	
	if (sw)
	{
		sw->Begin();
		sw->Translate(sz.cx / 2 - size / 2, sz.cy);
		sw->Scale(1, -1);
		
		DoRect(*sw, size);
		sw->End();
	}

TIMING Cairo lion     : 156.00 ms -  7.80 ms (156.00 ms / 20 ), min:  7.00 ms, max:  9.00 ms, nesting: 1 - 20
TIMING Cairo tree     :  2.85 s  - 142.70 ms ( 2.85 s  / 20 ), min: 139.00 ms, max: 146.00 ms, nesting: 1 - 20
TIMING AGGUPP lion    : 46.00 ms -  2.30 ms (46.00 ms / 20 ), min:  1.00 ms, max:  3.00 ms, nesting: 1 - 20
TIMING AGGUPP tree    : 627.00 ms - 31.35 ms (627.00 ms / 20 ), min: 29.00 ms, max: 34.00 ms, nesting: 1 - 20