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Added function RaySpherical

This commit is contained in:
Nico Pietroni 2010-04-21 17:21:43 +00:00
parent bae0c7decc
commit 7c89077eb7
1 changed files with 44 additions and 0 deletions
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44
vcg/complex/trimesh/closest.h
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@ -430,6 +430,50 @@ namespace vcg {
return f; return f;
} }
///Iteratively Do Ray sampling on spherical coordinates
///sampling along the two angles
template <class MESH, class GRID, class OBJPTRCONTAINER, class COORDCONTAINER>
void RaySpherical(MESH & mesh,GRID & gr, const Ray3<typename GRID::ScalarType> & _ray,
const typename GRID::ScalarType & _maxDist,
const typename GRID::ScalarType & _theta_interval,
const typename GRID::ScalarType & _phi_interval,
const int &n_samples,
OBJPTRCONTAINER & _objectPtrs,
COORDCONTAINER & _pos)
{
typedef typename MESH::FaceType FaceType;
typedef typename MESH::ScalarType ScalarType;
ScalarType delta_theta=_theta_interval/(ScalarType)(n_samples*2);
ScalarType delta_phi=_phi_interval/(ScalarType)(n_samples*2);
ScalarType theta_init;
ScalarType phi_init;
ScalarType ro;
GRID::CoordType dir0=_ray.Direction();
dir0.ToPolar(ro,theta_init,phi_init);
for (int x=-n_samples;x<=n_samples;x++)
for (int y=-n_samples;y<=n_samples;y++)
{
ScalarType theta=theta_init+x*delta_theta;
if (theta<0)
theta=360-theta;
ScalarType phi=phi_init+x*delta_phi;
GRID::CoordType dir;
dir.FromPolar(ro,theta,phi);
dir.Normalize();
Ray3<typename GRID::ScalarType> curr_ray(_ray.Origin(),dir);
GRID::ScalarType _t;
GRID::ObjPtr f=NULL;
f=DoRay(mesh,gr,curr_ray,_maxDist,_t);
if (f!=NULL)
{
GRID::CoordType pos=curr_ray.Origin()+curr_ray.Direction()*_t;
_objectPtrs.push_back(f);
_pos.push_back(pos);
}
}
}
//**ITERATORS DEFINITION**// //**ITERATORS DEFINITION**//
template <class GRID,class MESH> template <class GRID,class MESH>