// =============================================================================
std::vector<mesh::edge_data>
mesh_tri::
compute_edge_data_() const
{
#ifdef NOSH_TEUCHOS_TIME_MONITOR
// timer for this routine
Teuchos::TimeMonitor tm(*compute_edge_data_time_);
#endif
moab::Range cells = this->mbw_->get_entities_by_dimension(0, 2);
size_t num_cells = cells.size();
size_t num_edges = relations_.edge_vertices.size();
std::vector<edge_data> _edge_data(num_edges);
// compute all coordinates
std::vector<Eigen::Vector3d> edge_coords(num_edges);
for (size_t k = 0; k < num_edges; k++) {
auto tmp1 = std::get<0>(relations_.edge_vertices[k]);
std::vector<double> coords0 = this->mbw_->get_coords({tmp1});
tmp1 = std::get<1>(relations_.edge_vertices[k]);
std::vector<double> coords1 = this->mbw_->get_coords({tmp1});
edge_coords[k][0] = coords0[0] - coords1[0];
edge_coords[k][1] = coords0[1] - coords1[1];
edge_coords[k][2] = coords0[2] - coords1[2];
_edge_data[k].length = edge_coords[k].norm();
}
// Compute the contributions cell by cell.
for (size_t k = 0; k < num_cells; k++) {
const std::vector<size_t> edge_idxs = {
this->local_index(relations_.cell_edges[k][0]),
this->local_index(relations_.cell_edges[k][1]),
this->local_index(relations_.cell_edges[k][2])
};
const std::vector<Eigen::Vector3d> local_edge_coords = {
edge_coords[edge_idxs[0]],
edge_coords[edge_idxs[1]],
edge_coords[edge_idxs[2]]
};
Eigen::VectorXd edge_coeffs =
edge_coefficients_numerically_(local_edge_coords);
// Fill the edge coefficients into the vector.
for (int i = 0; i < edge_coeffs.size(); i++) {
const size_t edge_idx = this->local_index(relations_.cell_edges[k][i]);
// const int edge_id = this->liddd
_edge_data[edge_idx].covolume +=
edge_coeffs[i] * _edge_data[edge_idx].length;
}
}
return _edge_data;
}
// find the intersection with the sphere
static vec sphere_coords(GLdouble mx, GLdouble my)
{
GLdouble ax,ay,az;
gluUnProject(mx,my,0,ab_glm,ab_glp,ab_glv,&ax,&ay,&az);
vec m = vec((float)ax,(float)ay,(float)az) - ab_eye;
// mouse position represents ray: eye + t*m
// intersecting with a sphere centered at the origin
GLfloat a = m*m;
GLfloat b = (ab_eye*m);
GLfloat root = (b*b) - a*(ab_zoom2 - ab_sphere2);
if(root <= 0) return edge_coords(m);
GLfloat t = (0.0 - b - sqrt(root)) / a;
return (ab_eye+(m*t)).unit();
}