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Improved memory footprint of IFC loading by avoiding keeping in cache duplicated indices.

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This commit is contained in:
Leo Terziman
2018-04-18 11:12:40 +02:00
parent fce4d0cee7
commit 6ca8423e24
3 changed files with 17 additions and 19 deletions
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code/Importer/IFC/IFCGeometry.cpp
+12 -14
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@@ -728,7 +728,7 @@ void ProcessSweptAreaSolid(const Schema_2x3::IfcSweptAreaSolid& swept, TempMesh&
}
// ------------------------------------------------------------------------------------------------
bool ProcessGeometricItem(const Schema_2x3::IfcRepresentationItem& geo, unsigned int matid, std::vector<unsigned int>& mesh_indices,
bool ProcessGeometricItem(const Schema_2x3::IfcRepresentationItem& geo, unsigned int matid, std::set<unsigned int>& mesh_indices,
ConversionData& conv)
{
bool fix_orientation = false;
@@ -810,7 +810,7 @@ bool ProcessGeometricItem(const Schema_2x3::IfcRepresentationItem& geo, unsigned
aiMesh* const mesh = meshtmp->ToMesh();
if(mesh) {
mesh->mMaterialIndex = matid;
mesh_indices.push_back(static_cast<unsigned int>(conv.meshes.size()));
mesh_indices.insert(static_cast<unsigned int>(conv.meshes.size()));
conv.meshes.push_back(mesh);
return true;
}
@@ -818,33 +818,31 @@ bool ProcessGeometricItem(const Schema_2x3::IfcRepresentationItem& geo, unsigned
}
// ------------------------------------------------------------------------------------------------
void AssignAddedMeshes(std::vector<unsigned int>& mesh_indices,aiNode* nd,
void AssignAddedMeshes(std::set<unsigned int>& mesh_indices,aiNode* nd,
ConversionData& /*conv*/)
{
if (!mesh_indices.empty()) {
std::set<unsigned int>::const_iterator it = mesh_indices.cbegin();
std::set<unsigned int>::const_iterator end = mesh_indices.cend();
// make unique
std::sort(mesh_indices.begin(),mesh_indices.end());
std::vector<unsigned int>::iterator it_end = std::unique(mesh_indices.begin(),mesh_indices.end());
nd->mNumMeshes = static_cast<unsigned int>(std::distance(mesh_indices.begin(),it_end));
nd->mNumMeshes = static_cast<unsigned int>(mesh_indices.size());
nd->mMeshes = new unsigned int[nd->mNumMeshes];
for(unsigned int i = 0; i < nd->mNumMeshes; ++i) {
nd->mMeshes[i] = mesh_indices[i];
for(unsigned int i = 0; it != end && i < nd->mNumMeshes; ++i, ++it) {
nd->mMeshes[i] = *it;
}
}
}
// ------------------------------------------------------------------------------------------------
bool TryQueryMeshCache(const Schema_2x3::IfcRepresentationItem& item,
std::vector<unsigned int>& mesh_indices, unsigned int mat_index,
std::set<unsigned int>& mesh_indices, unsigned int mat_index,
ConversionData& conv)
{
ConversionData::MeshCacheIndex idx(&item, mat_index);
ConversionData::MeshCache::const_iterator it = conv.cached_meshes.find(idx);
if (it != conv.cached_meshes.end()) {
std::copy((*it).second.begin(),(*it).second.end(),std::back_inserter(mesh_indices));
std::copy((*it).second.begin(),(*it).second.end(),std::inserter(mesh_indices, mesh_indices.end()));
return true;
}
return false;
@@ -852,7 +850,7 @@ bool TryQueryMeshCache(const Schema_2x3::IfcRepresentationItem& item,
// ------------------------------------------------------------------------------------------------
void PopulateMeshCache(const Schema_2x3::IfcRepresentationItem& item,
const std::vector<unsigned int>& mesh_indices, unsigned int mat_index,
const std::set<unsigned int>& mesh_indices, unsigned int mat_index,
ConversionData& conv)
{
ConversionData::MeshCacheIndex idx(&item, mat_index);
@@ -861,7 +859,7 @@ void PopulateMeshCache(const Schema_2x3::IfcRepresentationItem& item,
// ------------------------------------------------------------------------------------------------
bool ProcessRepresentationItem(const Schema_2x3::IfcRepresentationItem& item, unsigned int matid,
std::vector<unsigned int>& mesh_indices,
std::set<unsigned int>& mesh_indices,
ConversionData& conv)
{
// determine material