public double GetLength(double t, IStopper stop)
{
if (t <= t_start)
{
return(0);
}
else if (t >= t_finish)
{
return(comp.GetLength(t_finish, stop) - comp.GetLength(t_start, stop));
}
else
{
return(comp.GetLength(t, stop) - comp.GetLength(t_start, stop));
}
}
/// <summary>
/// Flattens the specified curve. See <see cref="ICurve{TParam, TPoint}.Flatten"/>.
/// </summary>
/// <remarks>
/// This method cannot be used for curves that contain gaps!
/// </remarks>
internal static void Flatten(ICurve <float, Vector3> curve, ICollection <Vector3> points, int maxNumberOfIterations, float tolerance)
{
if (tolerance <= 0)
{
throw new ArgumentOutOfRangeException("tolerance", "The tolerance must be greater than zero.");
}
float totalLength = curve.GetLength(0, 1, maxNumberOfIterations, tolerance);
// No line segments if the curve has zero length.
if (totalLength == 0)
{
return;
}
// A single line segment if the curve's length is less than the tolerance.
if (totalLength < tolerance)
{
points.Add(curve.GetPoint(0));
points.Add(curve.GetPoint(1));
return;
}
var list = ResourcePools <Vector3> .Lists.Obtain();
Flatten(curve, list, 0, 1, curve.GetPoint(0), curve.GetPoint(1), 0, totalLength, 1, maxNumberOfIterations, tolerance);
foreach (var point in list)
{
points.Add(point);
}
ResourcePools <Vector3> .Lists.Recycle(list);
}
/// <summary>
/// Flattens the specified curve. See <see cref="ICurve{TParam, TPoint}.Flatten"/>.
/// </summary>
/// <remarks>
/// This method cannot be used for curves that contain gaps!
/// </remarks>
internal static void Flatten(ICurve<float, Vector3F> curve, ICollection<Vector3F> points, int maxNumberOfIterations, float tolerance)
{
if (tolerance <= 0)
throw new ArgumentOutOfRangeException("tolerance", "The tolerance must be greater than zero.");
float totalLength = curve.GetLength(0, 1, maxNumberOfIterations, tolerance);
// No line segments if the curve has zero length.
if (totalLength == 0)
return;
// A single line segment if the curve's length is less than the tolerance.
if (totalLength < tolerance)
{
points.Add(curve.GetPoint(0));
points.Add(curve.GetPoint(1));
return;
}
var list = ResourcePools<Vector3F>.Lists.Obtain();
Flatten(curve, list, 0, 1, curve.GetPoint(0), curve.GetPoint(1), 0, totalLength, 1, maxNumberOfIterations, tolerance);
foreach (var point in list)
points.Add(point);
ResourcePools<Vector3F>.Lists.Recycle(list);
}
private static void Flatten(ICurve <float, Vector3> curve, List <Vector3> points, float p0, float p1, Vector3 point0, Vector3 point1, float length0, float length1, int iteration, int maxNumberOfIterations, float tolerance)
{
if (iteration >= maxNumberOfIterations ||
Math.Abs((length1 - length0) - (point1 - point0).Length) < tolerance)
{
points.Add(point0);
points.Add(point1);
return;
}
// Subdivide.
var pMiddle = (p0 + p1) / 2;
var pointMiddle = curve.GetPoint(pMiddle);
var lengthMiddle = length0 + curve.GetLength(p0, pMiddle, maxNumberOfIterations, tolerance / 10);
Flatten(curve, points, p0, pMiddle, point0, pointMiddle, length0, lengthMiddle, iteration + 1, maxNumberOfIterations, tolerance);
Flatten(curve, points, pMiddle, p1, pointMiddle, point1, lengthMiddle, length1, iteration + 1, maxNumberOfIterations, tolerance);
}
private float GetLength(float parameter)
{
return(_curve.GetLength(0, parameter, _maxNumberOfIterations, _tolerance / 10));
}
public double GetLength(double t, IStopper stop)
{
return(curve.GetLength(t, stop));
}
private static void Flatten(ICurve<float, Vector3F> curve, List<Vector3F> points, float p0, float p1, Vector3F point0, Vector3F point1, float length0, float length1, int iteration, int maxNumberOfIterations, float tolerance)
{
if (iteration >= maxNumberOfIterations
|| Math.Abs((length1 - length0) - (point1 - point0).Length) < tolerance)
{
points.Add(point0);
points.Add(point1);
return;
}
// Subdivide.
var pMiddle = (p0 + p1) / 2;
var pointMiddle = curve.GetPoint(pMiddle);
var lengthMiddle = length0 + curve.GetLength(p0, pMiddle, maxNumberOfIterations, tolerance / 10);
Flatten(curve, points, p0, pMiddle, point0, pointMiddle, length0, lengthMiddle, iteration + 1, maxNumberOfIterations, tolerance);
Flatten(curve, points, pMiddle, p1, pointMiddle, point1, lengthMiddle, length1, iteration + 1, maxNumberOfIterations, tolerance);
}