static void SampleArc(Ellipse_Input ei, Ellipse_Output[] eo, bool big, bool clockwise, double resolution, Assignor ass)
{
int usl; double t1, dt; String dummy;
GeometryLib.Ellipse.FindArc(ei, eo, big, clockwise, out usl, out t1, out dt, out dummy);
var us = eo[usl];
double s_rot = Math.Sin(-(ei.theta * Math.PI) / 180.0);
double c_rot = Math.Cos(-(ei.theta * Math.PI) / 180.0);
double rt1 = t1 * Math.PI / 180.0;
double rdt = dt * Math.PI / 180.0;
foreach (double theta_now in EllipseUtil.GetThetas(rt1, rdt, resolution, ei.rx, ei.ry))
{
double s = Math.Sin(theta_now);
double c = Math.Cos(theta_now);
double x_now = c * us.rx;
double y_now = s * us.ry;
ass(x_now * c_rot - y_now * s_rot + us.X, x_now * s_rot + y_now * c_rot + us.Y);
}
}
public static IEnumerable <System.Drawing.PointF> Generate(EasyEllipseInput eei)
{
float rt1 = (eei.t1 / 180f) * (float)Math.PI;
float rt2 = (eei.t2 / 180f) * (float)Math.PI;
float rot = (float)Math.PI * (eei.rotation / 180f);
float cr = (float)Math.Cos(rot);
float sr = (float)Math.Sin(rot);
// init point get offset to start
float x, y;
getpoint(rt1, cr, sr, eei.rx, eei.ry, out x, out y);
float of_x = eei.start_x - x;
float of_y = eei.start_y - y;
foreach (double sd in EllipseUtil.GetThetas(rt1, rt2, eei.resolution, eei.rx, eei.ry))
{
float fsd = (float)sd;
getpoint(rt1, cr, sr, eei.rx, eei.ry, out x, out y);
yield return(new System.Drawing.PointF(x + of_x, y + of_y));
}
}