public void Transform(Vector3f scale, Vector3f transform)
{
Vector3f dim = Dimension;
Vector3f center = Center;
center = center + transform;
dim = Vector3f.ComponentMultiply(scale, dim);
Min = center - dim * (float)0.5;
Max = center + dim * (float)0.5;
}
/// <summary>
/// Obtains barycentric coordinate relative to this triangle.
/// </summary>
/// <param name="input">The vector that lies in triangle plane.</param>
/// <returns></returns>
public Vector2f GetBarycentric(Vector3f input)
{
//#ifdef 3D
// We need positive components of normal, only magnitude relavant.
Vector3f normal = this.Normal;
normal = Vector3f.ComponentMultiply(normal, normal);
if (normal.X > normal.Y)
{
if (normal.X > normal.Y)
{
// We project to x axis, all xs are the same.
return(LinearSolver.SolveSystem(B.Y - A.Y, C.Y - A.Y,
B.Z - A.Z, C.Z - A.Z,
input.Y - A.Y, input.Z - A.Z));
}
else
{
// We project to z axis, all zs are the same.
return(LinearSolver.SolveSystem(B.X - A.X, C.X - A.X,
B.Y - A.Y, C.Y - A.Y,
input.X - A.X, input.Y - A.Y));
}
}
else
{
if (normal.Y > normal.Z)
{
// We project to y axis, all ys are the same.
return(LinearSolver.SolveSystem(B.X - A.X, C.X - A.X,
B.Z - A.Z, C.Z - A.Z,
input.X - A.X, input.Z - A.Z));
}
else
{
// We project to z axis, all zs are the same.
return(LinearSolver.SolveSystem(B.X - A.X, C.X - A.X,
B.Y - A.Y, C.Y - A.X,
input.X - A.X, input.Y - A.Y));
}
}
//#endif
}
