/// <summary>
/// Note: tol must be Constant.NormalizedLengthTolerance
/// if comparing normalized vectors
/// rotation from-to will be multiplied for given angleFactor ( default 1.0 )
/// </summary>
public Vector3D RotateAs(double tol, Vector3D from, Vector3D to, double angleFactor = 1.0, double angleAddictional = 0)
{
var angle = from.AngleRad(tol, to) * angleFactor + angleAddictional;
var N = from.CrossProduct(to);
return(this.RotateAboutAxis(N, angle));
}
public void AngleRadTest()
{
var v1 = new Vector3D(10, 0, 0);
var v2 = new Vector3D(2, 5, 0);
var angv1v2 = v1.AngleRad(1e-4, v2);
var angv2v1 = v2.AngleRad(1e-4, v1);
Assert.True(angv1v2.EqualsTol(rad_tol, angv2v1));
Assert.True(angv1v2.EqualsTol(rad_tol, 68.2d.ToRad()));
}
public void Vector3DTest_0017()
{
var tol = 1e-8;
var v1 = new Vector3D("X = 220.22063137 Y = 217.58532235 Z = 30.72201149");
var v2 = new Vector3D("X = 41.2984487 Y = 335.41147265 Z = 65.72177141");
var v1v2angle = v1.AngleRad(tol, v2);
var dotp = v1.DotProduct(v2);
// DotProduct implemented as sum or vectors components'product
// test here with different approach: a b = |a| |b| cos(alfa)
Assert.True(dotp.EqualsTol(tol, v1.Length * v2.Length * Cos(v1v2angle)));
}
public void Vector3DTest_0019()
{
var tol = 1e-8;
var v1 = new Vector3D("X = 220.22063137 Y = 217.58532235 Z = 30.72201149");
var v2 = new Vector3D("X = 41.2984487 Y = 335.41147265 Z = 65.72177141");
var v1v2angle = v1.AngleRad(tol, v2);
var cp = v1.CrossProduct(v2);
// length of cross product is |a| |b| sin(alfa)
Assert.True(cp.Length.EqualsTol(tol, v1.Length * v2.Length * Sin(v1v2angle)));
// and is perpendicular to component vectors
Assert.True(cp.IsPerpendicular(v1));
Assert.True(cp.IsPerpendicular(v2));
// test v1 x v2 = cp meet right hand rule
var cpdir = new Vector3D("X = 15.98231081 Y = -52.81807432 Z = 259.51436001");
Assert.True(cp.ConcordantColinear(tol, cpdir));
}
