mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-18 11:20:21 +00:00
88 lines
4.3 KiB
C++
88 lines
4.3 KiB
C++
|
/********************************************************************************
|
||
|
|
* *
|
||
|
|
* 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) {
|
||
|
|
|
||
|
|
// 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());
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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>();
|
||
|
|
|
||
|
|
#if defined SCHEMA_HAS_IfcAxis2PlacementLinear
|
||
|
|
// 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_IfcAxix2PlacementLinear is not defined
|
||
|
|
|
||
|
|
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;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif // SCHEMA_HAS_IfcAxis2PlacementLinear
|
||
|
|
|
||
|
|
// @todo: rb - not sure what this means... it came from IfcLocalPlacement
|
||
|
|
// m4->components() = offset_and_rotation_ * m4->components();
|
||
|
|
|
||
|
|
return m4;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|