private Inventor.UnitVector GetTangentAtParam(Inventor.EdgeUse EdgeUse, double Pt)
{
Inventor.TransientGeometry TransientGeometry = mInvApplication.TransientGeometry;
Inventor.CurveEvaluator CurveEvaluator;
double[] Param = new double[0];
double[] v = new double[3];
Param[0] = Pt;
CurveEvaluator = EdgeUse.Edge.Evaluator;
CurveEvaluator.GetPointAtParam(ref Param, ref v);
if (EdgeUse.IsOpposedToEdge)
{
return(TransientGeometry.CreateUnitVector(-v[0], -v[1], -v[2]));
}
else
{
return(TransientGeometry.CreateUnitVector(v[0], v[1], v[2]));
}
}
// /////////////////////////////////////////////////////////////////////////////////////////////////////
// Developing `
private Inventor.UnitVector GetFaceNormalAtPoint(ref Inventor.Face ViewFace, Inventor.Point point)
{
Inventor.TransientGeometry TransientGeometry = mInvApplication.TransientGeometry;
double[] Pnt = new double[0];
double[] n = new double[3];
Pnt[0] = point.X; Pnt[1] = point.X; Pnt[2] = point.X;
ViewFace.Evaluator.GetNormalAtPoint(ref Pnt, ref n);
return(TransientGeometry.CreateUnitVector(n[0], n[1], n[2]));
}