public void rel_to_abs(ref double x, ref double y)
{
if (vertices.total_vertices() != 0)
{
double x2;
double y2;
if (ShapePath.is_vertex(vertices.last_vertex(out x2, out y2)))
{
x += x2;
y += y2;
}
}
}
/// <summary>
/// <para>Draws a quadratic Bézier curve from the current point to (x,y).</para>
/// <para>The control point is assumed to be the reflection of the control point on the previous command relative to the current point.</para>
/// <para>(If there is no previous command or if the previous command was not a curve, assume the control point is coincident with the current point.)</para>
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
public void curve3(double x, double y)
{
double x0;
double y0;
if (ShapePath.is_vertex(vertices.last_vertex(out x0, out y0)))
{
double x_ctrl;
double y_ctrl;
ShapePath.FlagsAndCommand cmd = vertices.prev_vertex(out x_ctrl, out y_ctrl);
if (ShapePath.is_curve(cmd))
{
x_ctrl = x0 + x0 - x_ctrl;
y_ctrl = y0 + y0 - y_ctrl;
}
else
{
x_ctrl = x0;
y_ctrl = y0;
}
curve3(x_ctrl, y_ctrl, x, y);
}
}