public static Color GetColor(double _p, FrameCurve _r, FrameCurve _g, FrameCurve _b)
{
Color @out = Color.Black;
@out.DR = _r.GetValue(_p);
@out.DG = _g.GetValue(_p);
@out.DB = _b.GetValue(_p);
return(@out);
}
public static VertexArray DrawMultiple(Vector[] _points, double _thickness, FrameCurve _curve, FrameCurve _r, FrameCurve _g, FrameCurve _b)
{
Bunch <Vector>[] npoints = new Bunch <Vector>[] { new Bunch <Vector>(), new Bunch <Vector>() };
for (int i = 0; i < _points.Length - 1; i++)
{
double a = (_points[i + 1] - _points[i]).Angle;
for (int x = 0; x < 2; x++)
{
for (int y = 0; y < 2; y++)
{
npoints[y].Add(_points[i + x] + Vector.FromAngle(a + Meth.Tau / 4 + Meth.Tau / 2 * y, _curve.GetValue((i + x) / (double)(_points.Length - 1)) / 2 * _thickness));
}
}
}
//VertexArray v = new VertexArray(VertexArrayType.Quads);
//for (int i = 0; i < npoints[0].LastIndex; i++)
//{
// Color c1 = GetColor(i / (double)npoints[0].LastIndex, _r, _g, _b);
// Color c2 = GetColor((i + 1) / (double)npoints[0].LastIndex, _r, _g, _b);
// v.Add(npoints[0][i], c1);
// v.Add(npoints[1][i], c1);
// v.Add(npoints[1][i + 1], c2);
// v.Add(npoints[0][i + 1], c2);
//}
VertexArray v = new VertexArray(VertexArrayType.Triangles)
{
Color = Color.Black
};
for (int i = 0; i < npoints[0].LastIndex; i++)
{
Color c1 = GetColor(i / (double)npoints[0].LastIndex, _r, _g, _b);
Color c2 = GetColor((i + 1) / (double)npoints[0].LastIndex, _r, _g, _b);
v.Add(npoints[0][i], c1);
v.Add(npoints[1][i], c1);
v.Add(npoints[1][i + 1], c2);
v.Add(npoints[1][i + 1], c2);
v.Add(npoints[0][i + 1], c2);
v.Add(npoints[0][i], c1);
}
if (_points.Length > 1)
{
for (int n = 0; n < 2; n++)
{
Vector p = _points[n * (_points.Length - 1)];
int q = Meth.Up(_points.Length / 2.0);
Color c = GetColor(n, _r, _g, _b);
double t = _thickness * _curve.GetValue(n) / 2;
double a = ((n == 0) ? (_points[0] - _points[1]).Angle : (_points[_points.Length - 1] - _points[_points.Length - 2]).Angle) - Meth.Tau / 4;
for (int i = 0; i < q; i++)
{
v.Add(p, c);
v.Add(p + Vector.FromAngle(a + i / (double)q * Meth.Tau / 2, t), c);
v.Add(p + Vector.FromAngle(a + (i + 1) / (double)q * Meth.Tau / 2, t), c);
}
}
}
return(v);
}