public void SetLookAt(Vector3D position, Vector3D direction, Vector3D up)
{
location = position;
if (direction != null && up != null && direction.IsNotColinear(up))
{
direction.Normalize();
up.Normalize();
this.direction = direction.clone();
this.up = up.clone();
CalcRU();
DeriveMatrix();
}
}
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 SetLookAtPoint(Vector3D position, Vector3D target, Vector3D up)
{
Vector3D direction = target.clone().Sub(position);
if (direction != null && up != null && direction.IsNotColinear(up))
{
this.location = position;
this.target = target;
direction.Normalize();
up.Normalize();
this.direction = direction.clone();
this.up = up.clone();
CalcRU();
DeriveMatrix();
}
}
public void SetLookAt(Vector3D position, Vector3D direction, Vector3D up)
{
location = position;
if (direction != null && up != null && direction.IsNotColinear(up))
{
direction.Normalize();
up.Normalize();
this.direction = direction.clone();
this.up = up.clone();
CalcRU();
DeriveMatrix();
}
}