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

pull/1902/head
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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26
code/Importer/IFC/IFCGeometry.cpp
View File

@ -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

4
code/Importer/IFC/IFCLoader.cpp
View File

@ -435,7 +435,7 @@ bool ProcessMappedItem(const Schema_2x3::IfcMappedItem& mapped, aiNode* nd_src,
msrc = m*msrc;
std::vector<unsigned int> meshes;
std::set<unsigned int> meshes;
const size_t old_openings = conv.collect_openings ? conv.collect_openings->size() : 0;
if (conv.apply_openings) {
IfcMatrix4 minv = msrc;
@ -550,7 +550,7 @@ void ProcessProductRepresentation(const Schema_2x3::IfcProduct& el, aiNode* nd,
// extract Color from metadata, if present
unsigned int matid = ProcessMaterials( el.GetID(), std::numeric_limits<uint32_t>::max(), conv, false);
std::vector<unsigned int> meshes;
std::set<unsigned int> meshes;
// we want only one representation type, so bring them in a suitable order (i.e try those
// that look as if we could read them quickly at first). This way of reading

6
code/Importer/IFC/IFCUtil.h
View File

@ -205,7 +205,7 @@ struct ConversionData
bool operator == (const MeshCacheIndex& o) const { return item == o.item && matindex == o.matindex; }
bool operator < (const MeshCacheIndex& o) const { return item < o.item || (item == o.item && matindex < o.matindex); }
};
typedef std::map<MeshCacheIndex, std::vector<unsigned int> > MeshCache;
typedef std::map<MeshCacheIndex, std::set<unsigned int> > MeshCache;
MeshCache cached_meshes;
typedef std::map<const IFC::Schema_2x3::IfcSurfaceStyle*, unsigned int> MaterialCache;
@ -281,8 +281,8 @@ unsigned int ProcessMaterials(uint64_t id, unsigned int prevMatId, ConversionDat
// IFCGeometry.cpp
IfcMatrix3 DerivePlaneCoordinateSpace(const TempMesh& curmesh, bool& ok, IfcVector3& norOut);
bool ProcessRepresentationItem(const Schema_2x3::IfcRepresentationItem& item, unsigned int matid, std::vector<unsigned int>& mesh_indices, ConversionData& conv);
void AssignAddedMeshes(std::vector<unsigned int>& mesh_indices,aiNode* nd,ConversionData& /*conv*/);
bool ProcessRepresentationItem(const Schema_2x3::IfcRepresentationItem& item, unsigned int matid, std::set<unsigned int>& mesh_indices, ConversionData& conv);
void AssignAddedMeshes(std::set<unsigned int>& mesh_indices,aiNode* nd,ConversionData& /*conv*/);
void ProcessSweptAreaSolid(const Schema_2x3::IfcSweptAreaSolid& swept, TempMesh& meshout,
ConversionData& conv);