internal static IPoint3D GetClosestPointToFictiousLine(IPoint3D p, IPoint3D lineStart, IPoint3D lineEnd)
{
IVector3D direction = lineEnd - lineStart;
IVector3D projection = lineStart - p;
IPoint3D pos;
double t = IVector3D.Dot(projection, direction);
if (t <= 0)
{
return(lineStart);
}
else
{
double eval = Math.Pow(lineStart.DistanceTo(lineEnd), 2);
if (t >= eval)
{
return(lineEnd);
}
else
{
t = t / eval;
pos = new IPoint3D();
direction.Mult(t);
pos = lineStart + direction;
return(pos);
}
}
}
public static IMesh Skew(IMesh mesh, IPlane plane = default, IVector3D skewDirection = default, double skewFactor = 1.0)
{
IMesh dM = mesh.DeepCopy();
if (plane == default)
{
plane = IPlane.WorldXY;
}
if (skewDirection == default)
{
skewDirection = IVector3D.UnitZ;
}
IPoint3D pt;
double d;
foreach (int vK in dM.VerticesKeys)
{
pt = dM.GetVertexWithKey(vK).Position;
d = plane.DistanceToPlane(pt);
if (d > 0)
{
pt += IVector3D.Mult(skewDirection, d * skewFactor);
}
dM.SetVertexPosition(vK, pt);
}
dM.UpdateGraphics();
return(dM);
}
