7051848d10
"Professional CMake" book suggest the following: "Targets should build successfully with or without compiler support for precompiled headers. It should be considered an optimization, not a requirement. In particular, do not explicitly include a precompile header (e.g. stdafx.h) in the source code, let CMake force-include an automatically generated precompile header on the compiler command line instead. This is more portable across the major compilers and is likely to be easier to maintain. It will also avoid warnings being generated from certain code checking tools like iwyu (include what you use)." Therefore, removed the "#include <PreCompiled.h>" from sources, also there is no need for the "#ifdef _PreComp_" anymore
108 lines
4.3 KiB
C++
108 lines
4.3 KiB
C++
/***************************************************************************
|
|
* Copyright (c) 2024 WandererFan <wandererfan@gmail.com> *
|
|
* *
|
|
* This file is part of the FreeCAD CAx development system. *
|
|
* *
|
|
* This library is free software; you can redistribute it and/or *
|
|
* modify it under the terms of the GNU Library General Public *
|
|
* License as published by the Free Software Foundation; either *
|
|
* version 2 of the License, or (at your option) any later version. *
|
|
* *
|
|
* This library 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 *
|
|
* GNU Library General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU Library General Public *
|
|
* License along with this library; see the file COPYING.LIB. If not, *
|
|
* write to the Free Software Foundation, Inc., 59 Temple Place, *
|
|
* Suite 330, Boston, MA 02111-1307, USA *
|
|
* *
|
|
***************************************************************************/
|
|
|
|
//! a class to assist with exporting sketches to dxf
|
|
|
|
|
|
#include <HLRBRep_Algo.hxx>
|
|
#include <HLRAlgo_Projector.hxx>
|
|
#include <HLRBRep_HLRToShape.hxx>
|
|
#include <BRep_Builder.hxx>
|
|
#include <BRepBuilderAPI_Transform.hxx>
|
|
|
|
|
|
#include <App/DocumentObject.h>
|
|
#include <Base/Placement.h>
|
|
#include <Base/Vector3D.h>
|
|
|
|
#include <Mod/Part/App/PartFeature.h>
|
|
|
|
#include "SketchExportHelper.h"
|
|
|
|
using namespace Import;
|
|
|
|
//! project a shape so that it is represented as a flat shape on the XY plane. Z coordinate
|
|
//! information is lost in this process, so it should only be used for flat objects like sketches.
|
|
//! Note: this only returns hard and outline edges. Seam, smooth, isoparametric and hidden lines
|
|
//! are not returned.
|
|
TopoDS_Shape SketchExportHelper::projectShape(const TopoDS_Shape& inShape,
|
|
const gp_Ax2& projectionCS)
|
|
{
|
|
Handle(HLRBRep_Algo) brep_hlr = new HLRBRep_Algo();
|
|
brep_hlr->Add(inShape);
|
|
HLRAlgo_Projector projector(projectionCS);
|
|
brep_hlr->Projector(projector);
|
|
brep_hlr->Update();
|
|
brep_hlr->Hide();
|
|
HLRBRep_HLRToShape hlrToShape(brep_hlr);
|
|
BRep_Builder builder;
|
|
TopoDS_Compound comp;
|
|
builder.MakeCompound(comp);
|
|
if (!hlrToShape.VCompound().IsNull()) {
|
|
builder.Add(comp, hlrToShape.VCompound());
|
|
}
|
|
if (!hlrToShape.OutLineVCompound().IsNull()) {
|
|
builder.Add(comp, hlrToShape.OutLineVCompound());
|
|
}
|
|
return comp;
|
|
}
|
|
|
|
|
|
//! true if obj is a sketch
|
|
bool SketchExportHelper::isSketch(App::DocumentObject* obj)
|
|
{
|
|
// Use name to lookup to avoid dependency on Sketcher module
|
|
return obj->isDerivedFrom(Base::Type::fromName("Sketcher::SketchObject"));
|
|
}
|
|
|
|
|
|
//! return a version of a sketch's geometry mapped to the OXYZ coordinate system
|
|
//! preferred by dxf
|
|
TopoDS_Shape SketchExportHelper::getFlatSketchXY(App::DocumentObject* obj)
|
|
{
|
|
// since we can't reference Sketcher module here, we will cast obj to
|
|
// a Part::Feature instead
|
|
auto sketch = dynamic_cast<Part::Feature*>(obj);
|
|
if (!sketch || !isSketch(obj)) {
|
|
return {};
|
|
}
|
|
|
|
auto plm = sketch->Placement.getValue();
|
|
Base::Rotation rot = plm.getRotation();
|
|
|
|
// get the sketch normal
|
|
Base::Vector3d stdZ {0.0, 0.0, 1.0};
|
|
Base::Vector3d sketchNormal;
|
|
rot.multVec(stdZ, sketchNormal);
|
|
Base::Vector3d stdX {1.0, 0.0, 0.0};
|
|
Base::Vector3d sketchX;
|
|
rot.multVec(stdX, sketchX);
|
|
|
|
// get the sketch origin
|
|
Base::Vector3d position = plm.getPosition();
|
|
gp_Ax2 projectionCS(gp_Pnt(position.x, position.y, position.z),
|
|
gp_Dir(sketchNormal.x, sketchNormal.y, sketchNormal.z),
|
|
gp_Dir(sketchX.x, sketchX.y, sketchX.z));
|
|
const TopoDS_Shape& shape = sketch->Shape.getValue();
|
|
return projectShape(shape, projectionCS);
|
|
}
|