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73f959c45a9c8a1f9c9d51efbc978d4ce5813588
IfcOpenShell/src/ifcgeom_schema_agnostic/Kernel.cpp
T
Thomas Krijnen 73f959c45a Correct extern function declaration names
2022-07-18 10:08:46 +02:00

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#include "Kernel.h"
#include <TopExp.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <boost/preprocessor/stringize.hpp>
#include <boost/preprocessor/seq/for_each.hpp>
IfcGeom::Kernel::Kernel(IfcParse::IfcFile* file) {
if (file != 0) {
if (file->schema() == 0) {
throw IfcParse::IfcException("No schema associated with file");
}
const std::string& schema_name = file->schema()->name();
implementation_ = impl::kernel_implementations().construct(schema_name, file);
}
}
int IfcGeom::Kernel::count(const TopoDS_Shape& s, TopAbs_ShapeEnum t, bool unique) {
if (unique) {
TopTools_IndexedMapOfShape map;
TopExp::MapShapes(s, t, map);
return map.Extent();
} else {
int i = 0;
TopExp_Explorer exp(s, t);
for (; exp.More(); exp.Next()) {
++i;
}
return i;
}
}
int IfcGeom::Kernel::surface_genus(const TopoDS_Shape& s) {
int nv = count(s, TopAbs_VERTEX, true);
int ne = count(s, TopAbs_EDGE, true);
int nf = count(s, TopAbs_FACE, true);
const int euler = nv - ne + nf;
const int genus = (2 - euler) / 2;
return genus;
}
IfcGeom::impl::KernelFactoryImplementation& IfcGeom::impl::kernel_implementations() {
static KernelFactoryImplementation impl;
return impl;
}
// Declares the schema-based external kernel initialization routines:
// - extern void init_KernelImplementation_Ifc2x3(IfcGeom::impl::KernelFactoryImplementation*);
// - ...
#define EXTERNAL_DEFS(r, data, elem) \
extern void BOOST_PP_CAT(init_KernelImplementation_Ifc, elem)(IfcGeom::impl::KernelFactoryImplementation*);
// Declares the schema-based external iterator initialization routines:
// - init_IteratorImplementation_Ifc2x3(this);
// - ...
#define CALL_DEFS(r, data, elem) \
BOOST_PP_CAT(init_KernelImplementation_Ifc, elem)(this);
BOOST_PP_SEQ_FOR_EACH(EXTERNAL_DEFS, , SCHEMA_SEQ)
IfcGeom::impl::KernelFactoryImplementation::KernelFactoryImplementation() {
BOOST_PP_SEQ_FOR_EACH(CALL_DEFS, , SCHEMA_SEQ)
}
void IfcGeom::impl::KernelFactoryImplementation::bind(const std::string& schema_name, IfcGeom::impl::kernel_fn fn) {
const std::string schema_name_lower = boost::to_lower_copy(schema_name);
this->insert(std::make_pair(schema_name_lower, fn));
}
IfcGeom::Kernel* IfcGeom::impl::KernelFactoryImplementation::construct(const std::string& schema_name, IfcParse::IfcFile* file) {
const std::string schema_name_lower = boost::to_lower_copy(schema_name);
std::map<std::string, IfcGeom::impl::kernel_fn>::const_iterator it;
it = this->find(schema_name_lower);
if (it == end()) {
throw IfcParse::IfcException("No geometry kernel registered for " + schema_name);
}
return it->second(file);
}
#define CREATE_GET_DECOMPOSING_ENTITY(IfcSchema) \
\
IfcSchema::IfcObjectDefinition* get_decomposing_entity_impl(IfcSchema::IfcProduct* product, bool include_openings) {\
IfcSchema::IfcObjectDefinition* parent = 0; \
\
/* In case of an opening element, parent to the RelatingBuildingElement */ \
if (include_openings && product->declaration().is(IfcSchema::IfcOpeningElement::Class())) { \
IfcSchema::IfcOpeningElement* opening = (IfcSchema::IfcOpeningElement*)product; \
IfcSchema::IfcRelVoidsElement::list::ptr voids = opening->VoidsElements(); \
if (voids->size()) { \
IfcSchema::IfcRelVoidsElement* ifc_void = *voids->begin(); \
parent = ifc_void->RelatingBuildingElement(); \
} \
} else if (product->declaration().is(IfcSchema::IfcElement::Class())) { \
IfcSchema::IfcElement* element = (IfcSchema::IfcElement*)product; \
IfcSchema::IfcRelFillsElement::list::ptr fills = element->FillsVoids(); \
/* In case of a RelatedBuildingElement parent to the opening element */ \
if (fills->size() && include_openings) { \
for (IfcSchema::IfcRelFillsElement::list::it it = fills->begin(); it != fills->end(); ++it) { \
IfcSchema::IfcRelFillsElement* fill = *it; \
IfcSchema::IfcObjectDefinition* ifc_objectdef = fill->RelatingOpeningElement(); \
if (product == ifc_objectdef) continue; \
parent = ifc_objectdef; \
} \
} \
/* Else simply parent to the containing structure */ \
if (!parent) { \
IfcSchema::IfcRelContainedInSpatialStructure::list::ptr parents = element->ContainedInStructure(); \
if (parents->size()) { \
IfcSchema::IfcRelContainedInSpatialStructure* container = *parents->begin(); \
parent = container->RelatingStructure(); \
} \
} \
} \
\
/* Parent decompositions to the RelatingObject */ \
if (!parent) { \
aggregate_of_instance::ptr parents = product->data().getInverse((&IfcSchema::IfcRelAggregates::Class()), -1); \
parents->push(product->data().getInverse((&IfcSchema::IfcRelNests::Class()), -1)); \
for (aggregate_of_instance::it it = parents->begin(); it != parents->end(); ++it) { \
IfcSchema::IfcRelDecomposes* decompose = (*it)->as<IfcSchema::IfcRelDecomposes>(); \
IfcUtil::IfcBaseEntity* ifc_objectdef; \
\
ifc_objectdef = get_RelatingObject(decompose); \
\
if (!ifc_objectdef || product == ifc_objectdef) continue; \
parent = ifc_objectdef->as<IfcSchema::IfcObjectDefinition>(); \
} \
} \
return parent; \
}
#define GET_RELATINGOBJECT_IFC4_VARIANT(IfcSchema) \
\
IfcUtil::IfcBaseEntity* get_RelatingObject(IfcSchema::IfcRelDecomposes* decompose) { \
IfcSchema::IfcRelAggregates* aggr = decompose->as<IfcSchema::IfcRelAggregates>(); \
if (aggr != nullptr) { \
return aggr->RelatingObject(); \
} \
IfcSchema::IfcRelNests* nest = decompose->as<IfcSchema::IfcRelNests>(); \
if (nest != nullptr) { \
return nest->RelatingObject(); \
} \
return nullptr; \
}
namespace {
#ifdef HAS_SCHEMA_2x3
IfcUtil::IfcBaseEntity* get_RelatingObject(Ifc2x3::IfcRelDecomposes* decompose) {
return decompose->RelatingObject();
}
CREATE_GET_DECOMPOSING_ENTITY(Ifc2x3);
#endif
#ifdef HAS_SCHEMA_4
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4);
#endif
#ifdef HAS_SCHEMA_4x1
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x1);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x1);
#endif
#ifdef HAS_SCHEMA_4x2
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x2);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x2);
#endif
#ifdef HAS_SCHEMA_4x3_rc1
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x3_rc1);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x3_rc1);
#endif
#ifdef HAS_SCHEMA_4x3_rc2
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x3_rc2);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x3_rc2);
#endif
#ifdef HAS_SCHEMA_4x3_rc3
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x3_rc3);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x3_rc3);
#endif
#ifdef HAS_SCHEMA_4x3_rc4
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x3_rc4);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x3_rc4);
#endif
#ifdef HAS_SCHEMA_4x3
GET_RELATINGOBJECT_IFC4_VARIANT(Ifc4x3);
CREATE_GET_DECOMPOSING_ENTITY(Ifc4x3);
#endif
}
// Declares the schema-based IfcProduct check:
// - if (inst->as<Ifc2x3::IfcProduct>()) { ... }
// - ...
#define IFCPROCUCT_CHECK(r, data, elem) \
if (inst->as<BOOST_PP_CAT(Ifc, elem)::IfcProduct>()) { return get_decomposing_entity_impl(inst->as<BOOST_PP_CAT(Ifc, elem)::IfcProduct>(), include_openings); }
#define GET_LAYERS(r, data, elem) \
if (inst->as<BOOST_PP_CAT(Ifc, elem)::IfcProduct>()) { return get_layers_impl<BOOST_PP_CAT(Ifc, elem)>(inst->as<BOOST_PP_CAT(Ifc, elem)::IfcProduct>()); }
IfcUtil::IfcBaseEntity* IfcGeom::Kernel::get_decomposing_entity(IfcUtil::IfcBaseEntity* inst, bool include_openings) {
BOOST_PP_SEQ_FOR_EACH(IFCPROCUCT_CHECK, , SCHEMA_SEQ)
if (inst->declaration().name() == "IfcProject") {
return nullptr;
}
throw IfcParse::IfcException("Unexpected entity " + inst->declaration().name());
}
namespace {
template <typename Schema>
static std::map<std::string, IfcUtil::IfcBaseEntity*> get_layers_impl(typename Schema::IfcProduct* prod) {
std::map<std::string, IfcUtil::IfcBaseEntity*> layers;
if (prod->Representation()) {
aggregate_of_instance::ptr r = IfcParse::traverse(prod->Representation());
typename Schema::IfcRepresentation::list::ptr representations = r->as<typename Schema::IfcRepresentation>();
for (typename Schema::IfcRepresentation::list::it it = representations->begin(); it != representations->end(); ++it) {
typename Schema::IfcPresentationLayerAssignment::list::ptr a = (*it)->LayerAssignments();
for (typename Schema::IfcPresentationLayerAssignment::list::it jt = a->begin(); jt != a->end(); ++jt) {
layers[(*jt)->Name()] = *jt;
}
}
}
return layers;
}
}
std::map<std::string, IfcUtil::IfcBaseEntity*> IfcGeom::Kernel::get_layers(IfcUtil::IfcBaseEntity* inst) {
BOOST_PP_SEQ_FOR_EACH(GET_LAYERS, , SCHEMA_SEQ)
throw IfcParse::IfcException("Unexpected entity " + inst->declaration().name());
}
bool IfcGeom::Kernel::is_manifold(const TopoDS_Shape& a) {
if (a.ShapeType() == TopAbs_COMPOUND || a.ShapeType() == TopAbs_SOLID) {
TopoDS_Iterator it(a);
for (; it.More(); it.Next()) {
if (!is_manifold(it.Value())) {
return false;
}
}
return true;
} else {
TopTools_IndexedDataMapOfShapeListOfShape map;
TopExp::MapShapesAndAncestors(a, TopAbs_EDGE, TopAbs_FACE, map);
for (int i = 1; i <= map.Extent(); ++i) {
if (map.FindFromIndex(i).Extent() != 2) {
return false;
}
}
return true;
}
}
bool IfcGeom::util::is_nested_compound_of_solid(const TopoDS_Shape& s, int depth) {
if (s.ShapeType() == TopAbs_COMPOUND) {
TopoDS_Iterator it(s);
for (; it.More(); it.Next()) {
if (!is_nested_compound_of_solid(it.Value(), depth + 1)) {
return false;
}
}
return true;
} else if (s.ShapeType() == TopAbs_SOLID) {
return depth > 0;
} else {
return false;
}
}
namespace {
template <typename T> struct dimension_count {};
template <> struct dimension_count <gp_Trsf2d > { static const int n = 2; };
template <> struct dimension_count <gp_GTrsf2d> { static const int n = 2; };
template <> struct dimension_count < gp_Trsf > { static const int n = 3; };
template <> struct dimension_count < gp_GTrsf > { static const int n = 3; };
template <typename T>
bool is_identity_helper(const T& t, double tolerance) {
// Note the {1, n+1} range due to Open Cascade's 1-based indexing
// Note the {1, n+2} range due to the translation part of the matrix
for (int i = 1; i < dimension_count<T>::n + 2; ++i) {
for (int j = 1; j < dimension_count<T>::n + 1; ++j) {
const double iden_value = i == j ? 1. : 0.;
const double trsf_value = t.Value(j, i);
if (fabs(trsf_value - iden_value) > tolerance) {
return false;
}
}
}
return true;
}
}
bool IfcGeom::Kernel::is_identity(const gp_Trsf2d& t, double tolerance) {
return is_identity_helper(t, tolerance);
}
bool IfcGeom::Kernel::is_identity(const gp_GTrsf2d& t, double tolerance) {
return is_identity_helper(t, tolerance);
}
bool IfcGeom::Kernel::is_identity(const gp_Trsf& t, double tolerance) {
return is_identity_helper(t, tolerance);
}
bool IfcGeom::Kernel::is_identity(const gp_GTrsf& t, double tolerance) {
return is_identity_helper(t, tolerance);
}
gp_Trsf IfcGeom::Kernel::combine_offset_and_rotation(const gp_Vec & offset, const gp_Quaternion & rotation) {
auto offset_transform = gp_Trsf{};
offset_transform.SetTranslation(offset);
auto rotation_transform = gp_Trsf{};
rotation_transform.SetRotation(rotation);
return rotation_transform * offset_transform;
}
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