/// <summary>
/// Plano con el vector normalizado.
/// </summary>
public static Line2d NewNormal(Point2d origin, Vector2d direction)
{
Vector2d vx = direction.Unit;
Line2d line = new Line2d(origin, vx);
if (vx.IsZero)
{
line.evaluated |= Evaluated.IsDegenerate;
line.isDegenerate = true;
}
else
{
line.evaluated |= Evaluated.IsNormal;
line.isNormal = true;
}
return(line);
}
public void TestIsDegenerate()
{
// Comprueba el método IsNormal sobre lineas no normales.
{
// Caso normal.
Assert.IsTrue(!Line2d.NewNonNormal(new Point2d(1, 1), new Vector2d(1, 0)).IsDegenerate);
Assert.IsTrue(!Line2d.NewNonNormal(new Point2d(1, 1), new Vector2d(0, -1)).IsDegenerate);
Assert.IsTrue(!Line2d.NewNonNormal(new Point2d(1, 1), new Vector2d(1, 1)).IsDegenerate);
// Planos degenerados.
Assert.IsTrue(Line2d.NewNonNormal(new Point2d(1, 1), new Vector2d(0, 0)).IsDegenerate);
}
// Comprueba el método IsNormal sobre lineas normales.
{
// Caso normal.
Assert.IsTrue(!Line2d.NewNormal(new Point2d(1, 1), new Vector2d(10, 0)).IsDegenerate);
Assert.IsTrue(!Line2d.NewNormal(new Point2d(1, 1), new Vector2d(5, 89)).IsDegenerate);
Assert.IsTrue(!Line2d.NewNormal(new Point2d(1, 1), new Vector2d(1, 1)).IsDegenerate);
// Planos degenerados.
Assert.IsTrue(Line2d.NewNormal(new Point2d(1, 1), new Vector2d(0, 0)).IsDegenerate);
}
}
public void TestWhichSide()
{
// Comprueba el método WhichSide sobre lineas normalizadas.
{
Line2d line = Line2d.NewNormal(new Point2d(50, 0), new Point2d(0, 50));
Assert.IsTrue(line.WhichSide(new Point2d(0, 0)) == LineSide.Left);
Assert.IsTrue(line.WhichSide(new Point2d(100, 100)) == LineSide.Right);
Assert.IsTrue(line.WhichSide(new Point2d(25, 25)) == LineSide.Middle);
}
// Comprueba el método WhichSide sobre lineas no normalizadas.
{
Line2d line = Line2d.NewNonNormal(new Point2d(50, 0), new Point2d(0, 50));
Assert.IsTrue(line.WhichSide(new Point2d(0, 0)) == LineSide.Left);
Assert.IsTrue(line.WhichSide(new Point2d(100, 100)) == LineSide.Right);
Assert.IsTrue(line.WhichSide(new Point2d(25, 25)) == LineSide.Middle);
}
{
Line2d line = Line2d.NewNormal(new Point2d(0, 5), new Vector2d(1, 1));
Assert.IsTrue(line.WhichSide(new Point2d(0, 0)) == LineSide.Right);
Assert.IsTrue(line.WhichSide(new Point2d(0, 5)) == LineSide.Middle);
Assert.IsTrue(line.WhichSide(new Point2d(0, 10)) == LineSide.Left);
}
}
