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dllimport/export #6926

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This commit is contained in:
Thomas Krijnen
2025-09-26 14:24:49 +02:00
parent 21137b9268
commit ce91d296b6
44 changed files with 957 additions and 860 deletions
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src/ifcgeom/kernels/opencascade/base_utils.cpp
+60 -8
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@@ -4,6 +4,8 @@
#include "OpenCascadeConversionResult.h"
#include "boolean_utils.h"
#include <Standard_Version.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
@@ -48,6 +50,8 @@
#include <TopTools_IndexedMapOfShape.hxx>
#include <ShapeUpgrade_UnifySameDomain.hxx>
// For axis placements detect equality early in order for the
// relatively computionaly expensive gp_Trsf calculation to be skipped
bool IfcGeom::util::axis_equal(const gp_Ax3 & a, const gp_Ax3 & b, double tolerance) {
@@ -297,18 +301,52 @@ TopoDS_Shape IfcGeom::util::apply_transformation(const TopoDS_Shape& s, const gp
}
}
namespace {
bool is_non_uniform(const Eigen::Matrix4d& M, double eps = 1e-6)
{
Eigen::Matrix3d L = M.block<3, 3>(0, 0);
double sx = L.col(0).norm();
double sy = L.col(1).norm();
double sz = L.col(2).norm();
return !(
std::abs(sx - sy) < eps &&
std::abs(sx - sz) < eps &&
std::abs(sy - sz) < eps
);
}
}
TopoDS_Shape IfcGeom::util::apply_transformation(const TopoDS_Shape& s, const ifcopenshell::geometry::taxonomy::matrix4& t) {
// @todo this probably discards non-uniform scale?
gp_GTrsf trsf;
if (t.components_) {
gp_Trsf tr;
const auto& m = t.ccomponents();
tr.SetValues(
m(0, 0), m(0, 1), m(0, 2), m(0, 3),
m(1, 0), m(1, 1), m(1, 2), m(1, 3),
m(2, 0), m(2, 1), m(2, 2), m(2, 3)
);
trsf = tr;
// This is either a bug or very finicky, but this appears to be the only
// way to get the transformation metadata to line up.
//
// - If gp_GTrsf.form is other, applying the transformation will result in
// a conversion to b-spline surfaces for about everything, which impacts
// performance and breaks detection of view volume in the svg serializer,
// which would be the case when setting the SetVectorialPart() block
// unconditionally.
// (calling SetForm() afterwards to detect CompoundTrsf over Other would
// set Scale to zero (bug?))
if (is_non_uniform(m)) {
trsf.SetVectorialPart(gp_Mat(
m(0, 0), m(0, 1), m(0, 2),
m(1, 0), m(1, 1), m(1, 2),
m(2, 0), m(2, 1), m(2, 2)
));
trsf.SetTranslationPart(gp_XYZ(m(0, 3), m(1, 3), m(2, 3)));
} else {
gp_Trsf tr;
tr.SetValues(
m(0, 0), m(0, 1), m(0, 2), m(0, 3),
m(1, 0), m(1, 1), m(1, 2), m(1, 3),
m(2, 0), m(2, 1), m(2, 2), m(2, 3)
);
trsf = tr;
}
}
return apply_transformation(s, trsf);
}
@@ -864,3 +902,17 @@ bool IfcGeom::util::validate_shape(const TopoDS_Shape& s) {
return false;
}
TopoDS_Shape IfcGeom::util::unify(const TopoDS_Shape& s, double tolerance) {
tolerance = (std::min)(min_edge_length(s) / 2., tolerance);
ShapeUpgrade_UnifySameDomain usd(s);
#if OCC_VERSION_HEX >= 0x70200
usd.SetSafeInputMode(true);
#endif
#if OCC_VERSION_HEX >= 0x70100
usd.SetLinearTolerance(tolerance);
usd.SetAngularTolerance(1.e-3);
#endif
usd.Build();
return usd.Shape();
}