(PECL cairo >= 0.1.0)
Adds a curve
public void CairoContext::curveTo ( float $x1, float $y1, float $x2, float $y2, float $x3, float $y3 )
Object oriented style (method):
Procedural style:
void cairo_curve_to ( CairoContext $context , float $x1 , float $y1 , float $x2 , float $y2 , float $x3 , float $y3 )
Adds a cubic Bezier spline to the path from the current point to position x3 ,y3 in user-space coordinates, using x1,