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Random Ray External Source Plotting Fix (#3430)

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John Tramm 2025-06-06 14:51:39 -05:00 • committed by GitHub
parent 4943fa3630
commit 67aa0def9d
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1 changed files with 8 additions and 1 deletions
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9
src/random_ray/flat_source_domain.cpp
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@ -919,10 +919,17 @@ void FlatSourceDomain::output_to_vtk() const
std::fprintf(plot, "LOOKUP_TABLE default\n");
for (int i = 0; i < Nx * Ny * Nz; i++) {
int64_t fsr = voxel_indices[i];
int mat = source_regions_.material(fsr);
float total_external = 0.0f;
if (fsr >= 0) {
for (int g = 0; g < negroups_; g++) {
total_external += source_regions_.external_source(fsr, g);
// External sources are already divided by sigma_t, so we need to
// multiply it back to get the true external source.
double sigma_t = 1.0;
if (mat != MATERIAL_VOID) {
sigma_t = sigma_t_[mat * negroups_ + g];
}
total_external += source_regions_.external_source(fsr, g) * sigma_t;
}
}
total_external = convert_to_big_endian<float>(total_external);