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Poisson reconstruction: back to un-normalized divergent

This commit is contained in:
Pierre Alliez 2011-04-29 14:39:35 +00:00
parent 6e897fafb6
commit 8c356f15e9
1 changed files with 4 additions and 20 deletions
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22
Surface_reconstruction_points_3/include/CGAL/Poisson_reconstruction_function.h
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@ -349,7 +349,7 @@ private:
{
if(!v->constrained())
{
B[v->index()] = div_normalized(v); // rhs -> divergent
B[v->index()] = div(v); // rhs -> divergent
assemble_poisson_row<SparseLinearAlgebraTraits_d>(A,v,B,lambda);
}
}
@ -517,7 +517,7 @@ private:
}
// divergent
FT div_normalized(Vertex_handle v)
FT div(Vertex_handle v)
{
std::vector<Cell_handle> cells;
cells.reserve(32);
@ -525,8 +525,6 @@ private:
if(cells.size() == 0)
return 0.0;
FT length = 100000;
int counter = 0;
FT div = 0.0;
typename std::vector<Cell_handle>::iterator it;
for(it = cells.begin(); it != cells.end(); it++)
@ -544,25 +542,11 @@ private:
// compute n'
int index = cell->index(v);
const Point& x = cell->vertex(index)->point();
const Point& a = cell->vertex((index+1)%4)->point();
const Point& b = cell->vertex((index+2)%4)->point();
const Point& c = cell->vertex((index+3)%4)->point();
Vector nn = (index%2==0) ? CGAL::cross_product(b-a,c-a) : CGAL::cross_product(c-a,b-a);
nn = nn / std::sqrt(nn*nn); // normalize
Vector p = a - x;
Vector q = b - x;
Vector r = c - x;
FT p_n = std::sqrt(p*p);
FT q_n = std::sqrt(q*q);
FT r_n = std::sqrt(r*r);
FT solid_angle = p*(CGAL::cross_product(q,r));
solid_angle = std::abs(solid_angle * 1.0 / (p_n*q_n*r_n + (p*q)*r_n + (q*r)*p_n + (r*p)*q_n));
Triangle face(a,b,c);
FT area = std::sqrt(face.squared_area());
length = std::sqrt((x-a)*(x-a)) + std::sqrt((x-b)*(x-b)) + std::sqrt((x-c)*(x-c));
counter++;
div += n * nn * area * 3 / length ;
div += n * nn;
}
return div;
}