/// <summary>
/// Align the object with the spline. Transforms object so that its origin is on the spline.
/// </summary>
/// <returns></returns>
public static void AlignToSpline(
Mesh mesh,
Vector3 axis,
Vector3 splineRotationAxis,
Gem.Math.Spline spline,
float distance)
{
Morph(mesh, (v) =>
{
var splinePoint = spline.Point(distance);
var splineTangent = spline.Tangent(distance);
var m = Matrix.CreateFromAxisAngle(Vector3.Normalize(splineRotationAxis),
Gem.Math.Vector.AngleBetweenVectors(axis, splineTangent));
return splinePoint + Vector3.Transform(v, m);
});
}
/// <summary>
/// Morph the object onto a spline. Expects the object's origin to already be aligned with the spline.
/// </summary>
/// <returns></returns>
public static void MorphToSpline(
Mesh mesh,
Vector3 axis,
Gem.Math.Spline spline)
{
Morph(mesh, (v) =>
{
var distance = Gem.Math.Vector.ProjectAOntoB(v, axis).Length() / axis.Length();
var splinePoint = spline.Point(distance);
var splineTangent = spline.Tangent(distance);
var rel = (axis * distance) - v;
var m = Matrix.CreateFromAxisAngle(Vector3.Normalize(spline.RotationAxis),//splineRotationAxis),
Gem.Math.Vector.AngleBetweenVectors(axis, splineTangent));
return splinePoint + Vector3.Transform(rel, m);
});
}
