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- Make distinction between single shape and list of shapes

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- Store shapes in std::vectors rather than TopoDS_Compounds
- Apply transformation only on triangulated meshes or when processing openings
- Store transformations in a gp_GTrsf to allow arbitrary transformations
- Support IfcCartesianTransformationOperator3DnonUniform
- TODO: Create proper class for ShapeList
- TODO: Carefully check for null pointers returned from IfcGeom::convert_shape()
This commit is contained in:
Thomas Krijnen
2011-10-23 17:11:06 +00:00
parent 8bcb9ffa3e
commit bd79df2be7
17 changed files with 360 additions and 174 deletions
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src/ifcgeom/IfcGeomHelpers.cpp
+50 -1
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@@ -29,9 +29,12 @@
#include <gp_Pnt2d.hxx>
#include <gp_Vec2d.hxx>
#include <gp_Dir2d.hxx>
#include <gp_Mat.hxx>
#include <gp_Mat2d.hxx>
#include <gp_GTrsf.hxx>
#include <gp_GTrsf2d.hxx>
#include <gp_Trsf.hxx>
#include <gp_Trsf2d.hxx>
#include <gp_Mat.hxx>
#include <gp_Ax3.hxx>
#include <gp_Ax2d.hxx>
#include <gp_Pln.hxx>
@@ -160,6 +163,52 @@ bool IfcGeom::convert(const Ifc2x3::IfcCartesianTransformationOperator2D::ptr l,
CACHE(IfcCartesianTransformationOperator2D,l,trsf)
return true;
}
bool IfcGeom::convert(const Ifc2x3::IfcCartesianTransformationOperator3DnonUniform::ptr l, gp_GTrsf& gtrsf) {
IN_CACHE(IfcCartesianTransformationOperator3DnonUniform,l,gp_GTrsf,gtrsf)
gp_Trsf trsf;
gp_Pnt origin;
IfcGeom::convert(l->LocalOrigin(),origin);
gp_Dir axis1 (1.,0.,0.);
gp_Dir axis2 (0.,1.,0.);
gp_Dir axis3;
if ( l->hasAxis1() ) IfcGeom::convert(l->Axis1(),axis1);
if ( l->hasAxis2() ) IfcGeom::convert(l->Axis2(),axis2);
if ( l->hasAxis3() ) IfcGeom::convert(l->Axis3(),axis3);
else axis3 = axis1.Crossed(axis2);
gp_Ax3 ax3 (origin,axis3,axis1);
if ( axis2.Dot(ax3.YDirection()) < 0 ) ax3.YReverse();
trsf.SetTransformation(ax3);
trsf.Invert();
const float scale1 = l->hasScale() ? l->Scale() : 1.0f;
const float scale2 = l->hasScale2() ? l->Scale2() : scale1;
const float scale3 = l->hasScale3() ? l->Scale3() : scale1;
gtrsf = gp_GTrsf();
gtrsf.SetValue(1,1,scale1);
gtrsf.SetValue(2,2,scale2);
gtrsf.SetValue(3,3,scale3);
gtrsf.Multiply(trsf);
CACHE(IfcCartesianTransformationOperator3DnonUniform,l,gtrsf)
return true;
}
bool IfcGeom::convert(const Ifc2x3::IfcCartesianTransformationOperator2DnonUniform::ptr l, gp_GTrsf2d& gtrsf) {
IN_CACHE(IfcCartesianTransformationOperator2DnonUniform,l,gp_GTrsf2d,gtrsf)
gp_Trsf2d trsf;
gp_Pnt origin;
IfcGeom::convert(l->LocalOrigin(),origin);
gp_Dir axis1 (1.,0.,0.);
if ( l->hasAxis1() ) IfcGeom::convert(l->Axis1(),axis1);
const gp_Ax2d ax2d (gp_Pnt2d(origin.X(),origin.Y()),gp_Dir2d(axis1.X(),axis1.Y()));
trsf.SetTransformation(ax2d);
trsf.Invert();
const float scale1 = l->hasScale() ? l->Scale() : 1.0f;
const float scale2 = l->hasScale2() ? l->Scale2() : scale1;
gtrsf = gp_GTrsf2d();
gtrsf.SetValue(1,1,scale1);
gtrsf.SetValue(2,2,scale2);
gtrsf.Multiply(trsf);
CACHE(IfcCartesianTransformationOperator2DnonUniform,l,gtrsf)
return true;
}
bool IfcGeom::convert(const Ifc2x3::IfcPlane::ptr pln, gp_Pln& plane) {
IN_CACHE(IfcPlane,pln,gp_Pln,plane)
Ifc2x3::IfcAxis2Placement3D::ptr l = pln->Position();