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Don't use IfcMappedItems for IfcOpenHouse walls, as suggested by Ian Clévy in https://sourceforge.net/p/ifcopenshell/discussion/1782716/thread/f9b586ca/?limit=25#ab87

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This commit is contained in:
aothms
2015-10-09 14:23:38 +02:00
parent c7ddc0643e
commit 44ddc5e6dc
1 changed files with 23 additions and 20 deletions
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src/examples/IfcOpenHouse.cpp
+23 -20
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@@ -195,43 +195,46 @@ int main(int argc, char** argv) {
file.addBuildingProduct(north_wall);
file.setSurfaceColour(north_wall->Representation(), wall_colour);
IfcSchema::IfcShapeRepresentation* clipped_wall_body_rep = file.addEmptyRepresentation();
file.addBox(clipped_wall_body_rep, 5000, 360, 6000);
// The east wall geometry is clipped using two IfcHalfSpaceSolids, created from an
// 'axis 3d placement' that specifies the plane against which the geometry is clipped.
file.clipRepresentation(clipped_wall_body_rep, file.addPlacement3d(-2500, 0, 3000, -1, 0, 1), false);
file.clipRepresentation(clipped_wall_body_rep, file.addPlacement3d(2500, 0, 3000, 1, 0, 1), false);
// Two identical representations are created for the two remaining walls. Mapped items
// are not used, because it is not allowed by the standard for wall body representations.
// MappedItems are not allowed for Axis representations as per CV-2x3-161
IfcSchema::IfcProductDefinitionShape* clipped_wall_body_reps[2];
for (int i = 0; i < 2; ++i) {
IfcSchema::IfcShapeRepresentation* body = file.addEmptyRepresentation();
file.addBox(body, 5000, 360, 6000);
// The wall geometry is clipped using two IfcHalfSpaceSolids, created from an
// 'axis 3d placement' that specifies the plane against which the geometry is clipped.
file.clipRepresentation(body, file.addPlacement3d(-2500, 0, 3000, -1, 0, 1), false);
file.clipRepresentation(body, file.addPlacement3d(2500, 0, 3000, 1, 0, 1), false);
file.setSurfaceColour(body, wall_colour);
IfcSchema::IfcShapeRepresentation* axis = file.addEmptyRepresentation("Axis", "Curve2D");
file.addAxis(axis, 5000);
IfcSchema::IfcRepresentation::list::ptr reps(new IfcSchema::IfcRepresentation::list);
reps->push(body);
reps->push(axis);
clipped_wall_body_reps[i] = new IfcSchema::IfcProductDefinitionShape(null, null, reps);
}
// Now create a wall on the east of the building, again starting with just a box shape
IfcSchema::IfcWallStandardCase* east_wall = new IfcSchema::IfcWallStandardCase(guid(), file.getSingle<IfcSchema::IfcOwnerHistory>(),
S("East wall"), null, null, file.addLocalPlacement(storey_placement, 4820, 2500, 0, 0, 0, 1, 0, 1, 0), file.addMappedItem(clipped_wall_body_rep), null
S("East wall"), null, null, file.addLocalPlacement(storey_placement, 4820, 2500, 0, 0, 0, 1, 0, 1, 0), clipped_wall_body_reps[0], null
#ifdef USE_IFC4
, IfcSchema::IfcWallTypeEnum::IfcWallType_STANDARD
#endif
);
file.addBuildingProduct(east_wall);
file.setSurfaceColour(clipped_wall_body_rep, wall_colour);
// The east wall is copied to the west location of the house
IfcSchema::IfcWallStandardCase* west_wall = new IfcSchema::IfcWallStandardCase(guid(), file.getSingle<IfcSchema::IfcOwnerHistory>(),
S("West wall"), null, null, file.addLocalPlacement(storey_placement, -4820, 2500, 0, 0, 0, 1, 0, -1, 0), file.addMappedItem(clipped_wall_body_rep), null
S("West wall"), null, null, file.addLocalPlacement(storey_placement, -4820, 2500, 0, 0, 0, 1, 0, -1, 0), clipped_wall_body_reps[1], null
#ifdef USE_IFC4
, IfcSchema::IfcWallTypeEnum::IfcWallType_STANDARD
#endif
);
file.addBuildingProduct(west_wall);
for (int i = 0; i < 2; ++i) {
// CV-2x3-161: MappedItems are not allowed for Axis representations
IfcSchema::IfcWallStandardCase* wall = i == 0 ? east_wall : west_wall;
IfcSchema::IfcShapeRepresentation* wall_axis_rep = file.addEmptyRepresentation("Axis", "Curve2D");
file.addAxis(wall_axis_rep, 5000);
IfcSchema::IfcRepresentation::list::ptr reps = wall->Representation()->Representations();
reps->push(wall_axis_rep);
wall->Representation()->setRepresentations(reps);
}
// The west wall is assigned an opening element we created for the south wall, opening elements are
// not shared accross building elements, even if they share the same representation. Hence, the east
// wall will not feature this opening.