public Triangle(IVector3 v0, IVector3 v1, IVector3 v2)
{
vert = new Vector3[3];
vert[0] = v0;
vert[1] = v1;
vert[2] = v2;
this.index = 0;
getBoundingBox();
GetSideVectors();
normal = v01.Cross(v12);
normal.Normalize();
}
/// <summary>
/// test if triangle contains point
/// </summary>
/// <param name="pt"></param>
/// <returns></returns>
public bool Contains(IVector3 pt)
{
try
{
GetSideVectors();
IVector3 v0pt = pt.Minus(vert[0]);
IVector3 v1pt = pt.Minus(vert[1]);
IVector3 v2pt = pt.Minus(vert[2]);
double testSide0 = v01.Cross(v0pt).Dot(Normal);
double testSide1 = v12.Cross(v1pt).Dot(Normal);
double testSide2 = v20.Cross(v2pt).Dot(Normal);
return((testSide0 >= 0) && (testSide1 >= 0) && (testSide2 >= 0));
}
catch (Exception)
{
throw;
}
}