/// <summary>
/// Gets the rotation from matrix
/// </summary>
/// <param name="matrix">Rotation from matrix</param>
/// <param name="axis">Around axis</param>
/// <returns>Angle of rotation (0 - 2PI)</returns>
public double GetRotation(IMatrix44 matrix, Axis axis)
{
double rot = 0.0;
double y = 0.0;
switch (axis)
{
case Axis.XAxis:
rot = GeomOperation.GetAngle(matrix.AxisZ, AxisZ);
y = AxisZ | (matrix.AxisX * matrix.AxisZ).Normalize;
break;
case Axis.YAxis:
rot = GeomOperation.GetAngle(matrix.AxisX, AxisX);
y = AxisX | (matrix.AxisY * matrix.AxisX).Normalize;
break;
case Axis.ZAxis:
rot = GeomOperation.GetAngle(matrix.AxisY, AxisY);
y = AxisY | (matrix.AxisZ * matrix.AxisY).Normalize;
break;
}
if (y.IsLesser(0))
{
rot = 2 * Math.PI - rot;
}
return(rot);
}
/// <summary>
/// Gets all angle change of parabola
/// </summary>
/// <returns>Angle change</returns>
internal double GetAngleChange()
{
double angle = 0;
if (Property.IsValid)
{
Vector3D vect1 = new Vector3D();
Vector3D vect2 = new Vector3D();
GeomOperation.GetTangentOnSegment(this, 0.0, ref vect1);
GeomOperation.GetTangentOnSegment(this, 1.0, ref vect2);
angle = GeomOperation.GetAngle(vect1, vect2);
}
else
{
var seg = new ArcSegment3D(StartPoint, IntermedPoint, EndPoint);
angle = GeomOperation.GetArcAngle(seg);
}
return(angle);
}