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Adds support for IfcLinearPlacement

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This commit is contained in:
Richard Brice
2023-10-20 13:29:33 -07:00
parent 1920a6427d
commit dde85265c6
2 changed files with 12 additions and 10 deletions
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src/ifcgeom/mapping/IfcCurveSegment.cpp
+1 -3
View File
@@ -428,7 +428,7 @@ public:
}
else if (segment_type_ == ST_VERTICAL) {
eval_ = [px, py, dx, dy](double u) {
eval_ = [py, dx, dy](double u) {
// https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcGradientCurve.htm
// the parameter, u, is the parameter of the BaseCurve (u = plan view distance along base curve)
@@ -486,11 +486,9 @@ public:
auto x = position[0];
auto y = position[1];
//auto z = position[2];
auto dx = slope[0];
auto dy = slope[1];
//auto dz = slope[2];
Eigen::Matrix4d m;
if (segment_type == ST_HORIZONTAL) {
src/ifcgeom/mapping/IfcLinearPlacement.cpp
+11 -7
View File
@@ -29,11 +29,15 @@ taxonomy::ptr mapping::map_impl(const IfcSchema::IfcLinearPlacement* inst) {
// 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 IFC 4.1 and IFC 4.2 have been withdrawn so I'm not going to try to implement linear placement for them.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>();
// 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 IFC 4.1 and IFC 4.2 have been withdrawn so I'm not going to try to implement linear placement for them.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();
@@ -80,10 +84,10 @@ taxonomy::ptr mapping::map_impl(const IfcSchema::IfcLinearPlacement* inst) {
}
}
// @todo: rb - not sure what this means... it came from IfcLocalPlacement
// m4->components() = offset_and_rotation_ * m4->components();
// @todo: rb - not sure what this means... it came from IfcLocalPlacement
// m4->components() = offset_and_rotation_ * m4->components();
return m4;
return m4;
#else
// The IFC specification does not provided a description of the optional