/** Convert physical position to UV projection
*
* @param pos :: position in 3D
* @param u :: set to U
* @param v :: set to V
* @param uscale :: scaling for u direction
* @param vscale :: scaling for v direction
*/
void UnwrappedCylinder::project(const Mantid::Kernel::V3D &pos, double &u,
double &v, double &uscale,
double &vscale) const {
// projection to cylinder axis
v = pos.scalar_prod(m_zaxis);
double x = pos.scalar_prod(m_xaxis);
double y = pos.scalar_prod(m_yaxis);
u = applyUCorrection(-atan2(y, x));
uscale = 1. / sqrt(x * x + y * y);
vscale = 1.;
}
/** Convert physical position to UV projection
*
* @param u :: set to U
* @param v :: set to V
* @param uscale :: scaling for u direction
* @param vscale :: scaling for v direction
* @param pos :: position in 3D
*/
void UnwrappedSphere::project(double & u, double & v, double & uscale, double & vscale, const Mantid::Kernel::V3D & pos) const
{
// projection to cylinder axis
v = pos.scalar_prod(m_zaxis);
double x = pos.scalar_prod(m_xaxis);
double y = pos.scalar_prod(m_yaxis);
double r = sqrt(x*x+y*y+v*v);
uscale = 1./sqrt(x*x+y*y);
vscale = 1./r;
u = applyUCorrection( -atan2(y,x) );
v = -acos(v/r);
}