public static WavefrontFormat DrawClotho(this WavefrontFormat wf,
string color,
ClothoidArc2 arc)
{
wf.UseMaterial(color);
wf.AddLines(MathUtils.For(arc.TMin, arc.TMax, 10).Select(arc.GetPosition), false);
return(wf);
}
/// <summary>
/// Prueba el constructor ClothoidArc2d(double,Vec2d,Vec2d,double,double).
/// </summary>
private static void TestClotho(double a, bool invertY, bool negX, double tg0, double tg1, Vec2d p0, Vec2d dir,
string fileName = null, bool toWavefront = false)
{
//double a = 5;
//bool invertY = true;
//double tg0 = -4 * SysMath.PI / 10;
//double tg1 = -SysMath.PI / 10;
// Si se indica negX, se invierten las tangentes.
int sign = 1;
if (negX)
{
sign = -1;
}
double l0 = sign * ClothoUtils.FindTangent(invertY, a, tg0);
double l1 = sign * ClothoUtils.FindTangent(invertY, a, tg1);
double r0 = ClothoUtils.ClothoRadious(l0, invertY, a);
double r1 = ClothoUtils.ClothoRadious(l1, invertY, a);
Vec2d pp0 = ClothoUtils.Clotho(l0, invertY, a);
Vec2d pp1 = ClothoUtils.Clotho(l1, invertY, a);
//Vec2d p0 = new Vec2d(5, 5);
Vec2d p1 = p0.Add(dir.Mul(pp1.Sub(pp0).Length));
ClothoidArc2 arc = new ClothoidArc2(l0, p0, p1, r0, r1);
Assert.IsTrue(arc.Point0.EpsilonEquals(p0, ERROR));
Assert.IsTrue(arc.Point1.EpsilonEquals(p1, ERROR));
Assert.IsTrue(arc.GetRadius(arc.TMin).EpsilonEquals(r0, ERROR));
Assert.IsTrue(arc.GetRadius(arc.TMax).EpsilonEquals(r1, ERROR)); // <-
Assert.IsTrue(arc.InvertY == invertY);
Assert.IsTrue(arc.A.EpsilonEquals(a, ERROR));
// Salida por fichero de la prueba.
if ((fileName != null) && toWavefront)
{
double figSize = 0.5;
string mtl = Path.ChangeExtension(fileName, "mtl");
using (MaterialFormat mf = new MaterialFormat(mtl))
{
mf.DefaultColors();
}
using (WavefrontFormat wf = new WavefrontFormat(fileName))
{
wf.LoadMaterialLib(Path.GetFileName(mtl));
wf.DrawLine("Yellow", Vec2d.Zero, new Vec2d(1, 0), 50);
wf.DrawLine("Yellow", Vec2d.Zero, new Vec2d(0, 1), 50);
wf.DrawFigure("Blue", WaveFigure.X, ClothoUtils.Clotho(l0, invertY, a), figSize);
wf.DrawFigure("Olive", WaveFigure.X, ClothoUtils.Clotho(l1, invertY, a), figSize);
wf.DrawClotho(invertY, a, "Red");
wf.DrawClotho("Magenta", arc);
wf.DrawFigure("Blue", WaveFigure.X, p0, figSize);
wf.DrawFigure("Olive", WaveFigure.X, p1, figSize);
}
}
}
