public void MoveTo(Vector3D loc, bool shiftTarget)
{
Vector3D previousLocation = location;
location.SetVector(loc);
target.Add(loc.Sub(previousLocation));
}
public void DeriveVectors()
{
Matrix3D m = world_to_object.Clone();
m.Invert();
double d = target.Sub(location).Length();
if (d <= 0)
{
d = 10;
}
location.SetVector(new Vector3D(0, 0, 0));
location.TransformTranspose(m);
direction.SetVector(new Vector3D(0, 0, -1));
direction.RotateTranspose(m);
direction.Normalize();
up.SetVector(new Vector3D(0, 1, 0));
up.RotateTranspose(m);
up.Normalize();
right.SetVector(new Vector3D(1, 0, 0));
right.RotateTranspose(m);
right.Normalize();
target = location.clone().Add(direction.clone().Scale(d));
}
public void LookAtTargetPoint()
{
Vector3D lookDir = target.clone();
lookDir.Sub(location).Normalize();
if (lookDir.IsNotColinear(ref_up))
{
up.SetVector(ref_up);
}
else
{
up.SetVector(ref_right);
}
SetLookAt(location, lookDir, up);
}
public void MoveTo(Vector3D loc, bool shiftTarget) {
Vector3D previousLocation = location;
location.SetVector(loc);
target.Add(loc.Sub(previousLocation));
}