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Implement ObjectPlacement using native recursion

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This commit is contained in:
Thomas Krijnen
2023-10-24 20:54:25 +02:00
parent 2a53911c52
commit ad61353fb5
4 changed files with 74 additions and 174 deletions
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src/ifcgeom/mapping/IfcLinearPlacement.cpp
-101
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@@ -1,101 +0,0 @@
/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
#include "mapping.h"
#define mapping POSTFIX_SCHEMA(mapping)
using namespace ifcopenshell::geometry;
#if defined SCHEMA_HAS_IfcLinearPlacement
taxonomy::ptr mapping::map_impl(const IfcSchema::IfcLinearPlacement* inst) {
// IfcLinearPlacement was added in IFC 4.1 but it had an Orientation attribute of type IfcOrientationExpression, which when combined with other
// attributes was similar to IfcAxis2PlacementLinear. IFC 4.1 and IFC 4.2 have been withdrawn so I'm not going to try to implement linear placement for them.
// For this reason the preprocessor skips this code if SCHEMA_HAS_IfcAxis2PlacementLinear is not defined
#if defined SCHEMA_HAS_IfcAxis2PlacementLinear
// the following is taken from IfcLocalPlacement and tweaked a little
// assumes that PlacementRelTo is relative to another IfcLinearPlacement
IfcSchema::IfcLinearPlacement* current = (IfcSchema::IfcLinearPlacement*)inst;
auto m4 = taxonomy::make<taxonomy::matrix4>();
for (;;) {
IfcSchema::IfcAxis2PlacementLinear* relplacement = current->RelativePlacement();
m4->components() = taxonomy::cast<taxonomy::matrix4>(map(relplacement))->ccomponents() * m4->ccomponents();
if (current->PlacementRelTo()) {
IfcSchema::IfcObjectPlacement* parent = current->PlacementRelTo();
bool parent_placement_ignored = false;
if (placement_rel_to_type_ || placement_rel_to_instance_) {
IfcSchema::IfcProduct::list::ptr parent_places = parent->PlacesObject();
for (auto iter = parent_places->begin(); iter != parent_places->end(); ++iter) {
if ((placement_rel_to_type_ && (*iter)->declaration().is(*placement_rel_to_type_)) ||
(placement_rel_to_instance_ && (*iter)->as<IfcUtil::IfcBaseEntity>() == placement_rel_to_instance_)) {
parent_placement_ignored = true;
}
}
}
if (parent_placement_ignored) {
// The parent placement of the current is a placement for a type that is
// being ignored (Site or Building) or it is the host element of an opening.
break;
} else if (parent->declaration().is(IfcSchema::IfcLinearPlacement::Class())) {
// Keep processing parent placements
current = current->PlacementRelTo()->as<IfcSchema::IfcLinearPlacement>();
} else {
// This is the root placement (typically Site).
break;
}
} else {
break;
}
}
// The IFC specification does not provided a description of the optional
// CartesianPosition attribute. It is assumed to be a pre-computed IfcAxis2Placement3D
// to be used by software that don't support IfcLinearPlacement. Check that the
// provided cartesian position is the same as the one determined by linear placement
if (inst->CartesianPosition()) {
auto m_fallback = taxonomy::cast<taxonomy::matrix4>(map(inst->CartesianPosition()));
if (m4 != m_fallback) {
Logger::Warning("IfcLinearPlacement.CartesianPosition is different than the computed placement", inst);
}
}
// @todo: rb - not sure what this means... it came from IfcLocalPlacement
// m4->components() = offset_and_rotation_ * m4->components();
return m4;
#else
// The IFC specification does not provided a description of the optional
// CartesianPosition attribute. It is assumed to be a pre-computed IfcAxis2Placement3D
// to be used by software that don't support IfcLinearPlacement. In this case,
// we will simply use the intended CartesianPosition provided by the IFC model
if (inst->CartesianPosition()) {
return map(inst->CartesianPosition());
} else {
Logger::Error("Unsupported");
}
#endif // SCHEMA_HAS_IfcAxis2PlacementLinear
}
#endif
src/ifcgeom/mapping/IfcLocalPlacement.cpp
-68
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@@ -1,68 +0,0 @@
/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
#include "mapping.h"
#define mapping POSTFIX_SCHEMA(mapping)
using namespace ifcopenshell::geometry;
taxonomy::ptr mapping::map_impl(const IfcSchema::IfcLocalPlacement* inst) {
IfcSchema::IfcLocalPlacement* current = (IfcSchema::IfcLocalPlacement*)inst;
auto m4 = taxonomy::make<taxonomy::matrix4>();
for (;;) {
IfcSchema::IfcAxis2Placement* relplacement = current->RelativePlacement();
// @todo this type check is wrong and unnecessary?
if (relplacement->as<IfcSchema::IfcAxis2Placement3D>()) {
// @todo check
m4->components() = taxonomy::cast<taxonomy::matrix4>(map(relplacement))->ccomponents() * m4->ccomponents();
}
if (current->PlacementRelTo()) {
IfcSchema::IfcObjectPlacement* parent = current->PlacementRelTo();
bool parent_placement_ignored = false;
if (placement_rel_to_type_ || placement_rel_to_instance_) {
IfcSchema::IfcProduct::list::ptr parent_places = parent->PlacesObject();
for (auto iter = parent_places->begin(); iter != parent_places->end(); ++iter) {
if ((placement_rel_to_type_ && (*iter)->declaration().is(*placement_rel_to_type_)) ||
(placement_rel_to_instance_ && (*iter)->as<IfcUtil::IfcBaseEntity>() == placement_rel_to_instance_)) {
parent_placement_ignored = true;
}
}
}
if (parent_placement_ignored) {
// The parent placement of the current is a placement for a type that is
// being ignored (Site or Building) or it is the host element of an opening.
break;
} else if (parent->declaration().is(IfcSchema::IfcLocalPlacement::Class())) {
// Keep processing parent placements
current = current->PlacementRelTo()->as<IfcSchema::IfcLocalPlacement>();
} else {
// This is the root placement (typically Site).
break;
}
} else {
break;
}
}
// @todo
// m4->components() = offset_and_rotation_ * m4->components();
return m4;
}
src/ifcgeom/mapping/IfcObjectPlacement.cpp
+73
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@@ -0,0 +1,73 @@
/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
#include "mapping.h"
#define mapping POSTFIX_SCHEMA(mapping)
using namespace ifcopenshell::geometry;
taxonomy::ptr mapping::map_impl(const IfcSchema::IfcObjectPlacement* inst) {
const IfcSchema::IfcObjectPlacement* relative_to = nullptr;
const IfcUtil::IfcBaseInterface* transform;
#ifdef SCHEMA_HAS_IfcLinearPlacement
if (inst->as<IfcSchema::IfcLinearPlacement>()) {
transform = inst->as<IfcSchema::IfcLinearPlacement>()->RelativePlacement();
}
#endif
if (inst->as<IfcSchema::IfcLocalPlacement>()) {
transform = inst->as<IfcSchema::IfcLocalPlacement>()->RelativePlacement();
}
if (inst->as<IfcSchema::IfcGridPlacement>()) {
// @todo a bit harder to map without kernel
return nullptr;
}
#ifdef SCHEMA_IfcObjectPlacement_HAS_PlacementRelTo
relative_to = inst->PlacementRelTo();
#else
if (inst->as<IfcSchema::IfcLocalPlacement>()) {
relative_to = inst->as<IfcSchema::IfcLocalPlacement>()->PlacementRelTo();
}
#endif
bool parent_placement_ignored = false;
if (relative_to && (placement_rel_to_type_ || placement_rel_to_instance_)) {
IfcSchema::IfcProduct::list::ptr parent_places = relative_to->PlacesObject();
for (auto iter = parent_places->begin(); iter != parent_places->end(); ++iter) {
if ((placement_rel_to_type_ && (*iter)->declaration().is(*placement_rel_to_type_)) ||
(placement_rel_to_instance_ && (*iter)->as<IfcUtil::IfcBaseEntity>() == placement_rel_to_instance_)) {
parent_placement_ignored = true;
}
}
}
if (!parent_placement_ignored && relative_to) {
// The parent placement of the current is a placement for a type that is
// being ignored (Site or Building) or it is the host element of an opening.
return taxonomy::make<taxonomy::matrix4>(
taxonomy::cast<taxonomy::matrix4>(map(relative_to))->ccomponents() *
taxonomy::cast<taxonomy::matrix4>(map(transform))->ccomponents()
);
} else {
return map(transform);
}
// @todo
// m4->components() = offset_and_rotation_ * m4->components();
}
src/ifcgeom/mapping/mapping.i
+1 -5
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@@ -149,11 +149,7 @@ BIND(IfcAxis1Placement);
BIND(IfcCartesianTransformationOperator2D);
// IfcCartesianTransformationOperator3DnonUniform included
BIND(IfcCartesianTransformationOperator3D);
// BIND(IfcObjectPlacement);
BIND(IfcLocalPlacement); // -> matrix4
#if defined SCHEMA_HAS_IfcLinearPlacement
BIND(IfcLinearPlacement); // -> matrix4
#endif
BIND(IfcObjectPlacement); // -> matrix4
BIND(IfcVector);
// BIND(IfcColourRgb);