public override void Draw(PixelFarm.Drawing.Painter p)
{
p.Clear(Drawing.Color.White);
p.StrokeColor = Color.Black;
p.StrokeWidth = 2;
p.StrokeColor = Color.Green;
p.Draw(_triangleVxs);
if (!ShowReconstructionCurve)
{
return;
}
//draw Ci line
p.StrokeColor = KnownColors.OrangeRed;
DrawLine(p, a01, a12);
DrawLine(p, a12, a20);
DrawLine(p, a20, a01);
//find B
//DrawPoint(p, a01);
//DrawPoint(p, a12);
//DrawPoint(p, a20);
BezierControllerArmPair c1 = BezierControllerArmPair.ReconstructControllerArms(v0, v1, v2);
BezierControllerArmPair c2 = BezierControllerArmPair.ReconstructControllerArms(v1, v2, v0);
BezierControllerArmPair c0 = BezierControllerArmPair.ReconstructControllerArms(v2, v0, v1);
c0.UniformSmoothCoefficient = SmoothCoefficientValue;
c1.UniformSmoothCoefficient = SmoothCoefficientValue;
c2.UniformSmoothCoefficient = SmoothCoefficientValue;
//DrawPoint(p, c0 = FindB(v0, v1, v2, out c1));
//DrawPoint(p, b2 = FindB(v1, v2, v0, out c2));
//DrawPoint(p, b0 = FindB(v2, v0, v1, out c0));
p.StrokeColor = Color.Red;
DrawControllerPair(p, c0);
DrawControllerPair(p, c1);
DrawControllerPair(p, c2);
p.StrokeColor = Color.Blue;
using (Tools.BorrowVxs(out var tmpVxs1, out var tmpVxs2))
using (Tools.BorrowPathWriter(tmpVxs1, out var pw))
{
pw.MoveTo(c0.mid.X, c0.mid.y);
pw.Curve4(c0.right.x, c0.right.y, c1.left.x, c1.left.y, c1.mid.x, c1.mid.y); //1st curve
pw.Curve4(c1.right.x, c1.right.y, c2.left.x, c2.left.y, c2.mid.x, c2.mid.y); //2nd curve
pw.Curve4(c2.right.x, c2.right.y, c0.left.x, c0.left.y, c0.mid.x, c0.mid.y); //3rd curve
_curveflattener.MakeVxs(tmpVxs1, tmpVxs2);
p.Draw(tmpVxs2);
}
}
void DrawControllerPair(PixelFarm.Drawing.Painter p, BezierControllerArmPair c)
{
DrawLine(p, c.left, c.mid);
DrawLine(p, c.mid, c.right);
DrawPoint(p, c.mid);
}
