/*************************************************************************** * Copyright (c) Jürgen Riegel (juergen.riegel@web.de) 2002 * * Copyright (c) Luke Parry (l.parry@warwick.ac.uk) 2013 * * Copyright (c) WandererFan (wandererfan@gmail.com) 2016 * * * * 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 * * * ***************************************************************************/ #include "PreCompiled.h" #ifndef _PreComp_ # include #include #include //#include #include #include #include #include #include # include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #endif #include # include # include #include #include #include #include #include #include #include #include #include #include "Geometry.h" #include "GeometryObject.h" #include "Cosmetic.h" #include "HatchLine.h" #include "EdgeWalker.h" #include "DrawUtil.h" #include "DrawProjGroupItem.h" #include "DrawProjectSplit.h" #include "DrawGeomHatch.h" #include "DrawViewSection.h" using namespace TechDraw; using namespace std; const char* DrawViewSection::SectionDirEnums[]= {"Right", "Left", "Up", "Down", NULL}; //=========================================================================== // DrawViewSection //=========================================================================== PROPERTY_SOURCE(TechDraw::DrawViewSection, TechDraw::DrawViewPart) DrawViewSection::DrawViewSection() { static const char *sgroup = "Section"; static const char *fgroup = "Cut Surface Format"; ADD_PROPERTY_TYPE(SectionSymbol ,("A"),sgroup,App::Prop_None,"The identifier for this section"); ADD_PROPERTY_TYPE(BaseView ,(0),sgroup,App::Prop_None,"2D View source for this Section"); BaseView.setScope(App::LinkScope::Global); ADD_PROPERTY_TYPE(SectionNormal ,(0,0,1.0) ,sgroup,App::Prop_None,"Section Plane normal direction"); //direction of extrusion of cutting prism ADD_PROPERTY_TYPE(SectionOrigin ,(0,0,0) ,sgroup,App::Prop_None,"Section Plane Origin"); SectionDirection.setEnums(SectionDirEnums); ADD_PROPERTY_TYPE(SectionDirection,((long)0),sgroup, App::Prop_None, "Direction in Base View for this Section"); ADD_PROPERTY_TYPE(FuseBeforeCut ,(false),sgroup,App::Prop_None,"Merge Source(s) into a single shape before cutting"); ADD_PROPERTY_TYPE(FileHatchPattern ,(""),fgroup,App::Prop_None,"The hatch pattern file for the cut surface"); ADD_PROPERTY_TYPE(NameGeomPattern ,(""),fgroup,App::Prop_None,"The pattern name for geometric hatching"); ADD_PROPERTY_TYPE(HatchScale,(1.0),fgroup,App::Prop_None,"Hatch pattern size adjustment"); getParameters(); } DrawViewSection::~DrawViewSection() { } short DrawViewSection::mustExecute() const { short result = 0; if (!isRestoring()) { result = (Scale.isTouched() || Direction.isTouched() || BaseView.isTouched() || SectionNormal.isTouched() || SectionOrigin.isTouched() ); } if (result) { return result; } return TechDraw::DrawView::mustExecute(); } void DrawViewSection::onChanged(const App::Property* prop) { if (!isRestoring()) { if (prop == &SectionSymbol) { std::string lblText = "Section " + std::string(SectionSymbol.getValue()) + " - " + std::string(SectionSymbol.getValue()); Label.setValue(lblText); } if (prop == &SectionOrigin) { App::DocumentObject* base = BaseView.getValue(); TechDraw::DrawView* dv = dynamic_cast(base); if (dv != nullptr) { dv->requestPaint(); } } } if (prop == &FileHatchPattern || prop == &NameGeomPattern ) { std::string fileSpec = FileHatchPattern.getValue(); Base::FileInfo fi(fileSpec); std::string ext = fi.extension(); if ( (ext == "pat") || (ext == "PAT") ) { if ((!FileHatchPattern.isEmpty()) && (!NameGeomPattern.isEmpty())) { std::vector specs = DrawGeomHatch::getDecodedSpecsFromFile(FileHatchPattern.getValue(),NameGeomPattern.getValue()); m_lineSets.clear(); for (auto& hl: specs) { //hl.dump("hl from section"); LineSet ls; ls.setPATLineSpec(hl); m_lineSets.push_back(ls); } } } } DrawView::onChanged(prop); } App::DocumentObjectExecReturn *DrawViewSection::execute(void) { if (!keepUpdated()) { return App::DocumentObject::StdReturn; } App::DocumentObject* base = BaseView.getValue(); if (!base->getTypeId().isDerivedFrom(TechDraw::DrawViewPart::getClassTypeId())) return new App::DocumentObjectExecReturn("BaseView object is not a DrawViewPart object"); TopoDS_Shape baseShape; if (FuseBeforeCut.getValue()) { baseShape = static_cast(base)->getSourceShapeFused(); } else { baseShape = static_cast(base)->getSourceShape(); } if (baseShape.IsNull()) { bool isRestoring = getDocument()->testStatus(App::Document::Status::Restoring); if (isRestoring) { Base::Console().Warning("DVS::execute - base shape is invalid - (but document is restoring) - %s\n", getNameInDocument()); } else { Base::Console().Error("Error: DVS::execute - base shape is Null. - %s\n", getNameInDocument()); } return new App::DocumentObjectExecReturn("BaseView Source object is Null"); } //is SectionOrigin valid? Bnd_Box centerBox; BRepBndLib::Add(baseShape, centerBox); centerBox.SetGap(0.0); gp_Pln pln = getSectionPlane(); gp_Dir gpNormal = pln.Axis().Direction(); Base::Vector3d orgPnt = SectionOrigin.getValue(); if(!isReallyInBox(gp_Pnt(orgPnt.x,orgPnt.y,orgPnt.z), centerBox)) { Base::Console().Warning("DVS: SectionOrigin doesn't intersect part in %s\n",getNameInDocument()); Base::Console().Warning("DVS: Using center of bounding box.\n"); double Xmin,Ymin,Zmin,Xmax,Ymax,Zmax; centerBox.Get(Xmin,Ymin,Zmin,Xmax,Ymax,Zmax); orgPnt = Base::Vector3d((Xmax + Xmin)/2.0, (Ymax + Ymin)/2.0, (Zmax + Zmin)/2.0); SectionOrigin.setValue(orgPnt); } // Make the extrusion face double dMax = sqrt(centerBox.SquareExtent()); BRepBuilderAPI_MakeFace mkFace(pln, -dMax,dMax,-dMax,dMax); TopoDS_Face aProjFace = mkFace.Face(); if(aProjFace.IsNull()) { return new App::DocumentObjectExecReturn("DrawViewSection - Projected face is NULL"); } gp_Vec extrudeDir = dMax * gp_Vec(gpNormal); TopoDS_Shape prism = BRepPrimAPI_MakePrism(aProjFace, extrudeDir, false, true).Shape(); // We need to copy the shape to not modify the BRepstructure BRepBuilderAPI_Copy BuilderCopy(baseShape); TopoDS_Shape myShape = BuilderCopy.Shape(); BRepAlgoAPI_Cut mkCut(myShape, prism); if (!mkCut.IsDone()) { return new App::DocumentObjectExecReturn("Section cut has failed"); } TopoDS_Shape rawShape = mkCut.Shape(); Bnd_Box testBox; BRepBndLib::Add(rawShape, testBox); testBox.SetGap(0.0); if (testBox.IsVoid()) { //prism & input don't intersect. rawShape is garbage, don't bother. Base::Console().Message("INFO - DVS::execute - prism & input don't intersect\n"); return DrawView::execute(); } m_cutShape = rawShape; gp_Pnt inputCenter; try { inputCenter = TechDraw::findCentroid(rawShape, Direction.getValue()); TopoDS_Shape mirroredShape = TechDraw::mirrorShape(rawShape, inputCenter, getScale()); gp_Ax2 viewAxis = getViewAxis(Base::Vector3d(inputCenter.X(),inputCenter.Y(),inputCenter.Z()),Direction.getValue()); if (!DrawUtil::fpCompare(Rotation.getValue(),0.0)) { mirroredShape = TechDraw::rotateShape(mirroredShape, viewAxis, Rotation.getValue()); } geometryObject = buildGeometryObject(mirroredShape,viewAxis); //this is original shape after cut by section prism #if MOD_TECHDRAW_HANDLE_FACES extractFaces(); #endif //#if MOD_TECHDRAW_HANDLE_FACES } catch (Standard_Failure& e1) { Base::Console().Log("LOG - DVS::execute - base shape failed for %s - %s **\n",getNameInDocument(),e1.GetMessageString()); return new App::DocumentObjectExecReturn(e1.GetMessageString()); } try { TopoDS_Compound sectionCompound = findSectionPlaneIntersections(rawShape); TopoDS_Shape mirroredSection = TechDraw::mirrorShape(sectionCompound, inputCenter, getScale()); gp_Ax2 viewAxis = getViewAxis(Base::Vector3d(inputCenter.X(),inputCenter.Y(),inputCenter.Z()),Direction.getValue()); if (!DrawUtil::fpCompare(Rotation.getValue(),0.0)) { mirroredSection = TechDraw::rotateShape(mirroredSection, viewAxis, Rotation.getValue()); } sectionFaceWires.clear(); TopoDS_Compound newFaces; BRep_Builder builder; builder.MakeCompound(newFaces); TopExp_Explorer expl(mirroredSection, TopAbs_FACE); int idb = 0; for (; expl.More(); expl.Next()) { const TopoDS_Face& face = TopoDS::Face(expl.Current()); TopoDS_Face pFace = projectFace(face, inputCenter, Direction.getValue()); if (!pFace.IsNull()) { builder.Add(newFaces,pFace); sectionFaceWires.push_back(ShapeAnalysis::OuterWire(pFace)); } idb++; } sectionFaces = newFaces; } catch (Standard_Failure& e2) { Base::Console().Log("LOG - DVS::execute - failed building section faces for %s - %s **\n",getNameInDocument(),e2.GetMessageString()); return new App::DocumentObjectExecReturn(e2.GetMessageString()); } //add back the cosmetic vertices for (auto& v: CVertexTable) { int idx = geometryObject->addCosmeticVertex(v->point() * getScale()); v->linkGeom = idx; } //add the cosmetic Edges to geometry Edges list addCosmeticEdgesToGeom(); //add centerlines to geometry edges list addCenterLinesToGeom(); requestPaint(); return App::DocumentObject::StdReturn; } gp_Pln DrawViewSection::getSectionPlane() const { Base::Vector3d plnPnt = SectionOrigin.getValue(); Base::Vector3d plnNorm = SectionNormal.getValue(); gp_Ax2 viewAxis = getViewAxis(plnPnt,plnNorm,false); gp_Ax3 viewAxis3(viewAxis); return gp_Pln(viewAxis3); } //! tries to find the intersection of the section plane with the shape giving a collection of planar faces TopoDS_Compound DrawViewSection::findSectionPlaneIntersections(const TopoDS_Shape& shape) { TopoDS_Compound result; if(shape.IsNull()){ Base::Console().Warning("DrawViewSection::getSectionSurface - Sectional View shape is Empty\n"); return result; } gp_Pln plnSection = getSectionPlane(); BRep_Builder builder; builder.MakeCompound(result); TopExp_Explorer expFaces(shape, TopAbs_FACE); int i; int dbAdded = 0; for (i = 1 ; expFaces.More(); expFaces.Next(), i++) { const TopoDS_Face& face = TopoDS::Face(expFaces.Current()); BRepAdaptor_Surface adapt(face); if (adapt.GetType() == GeomAbs_Plane){ gp_Pln plnFace = adapt.Plane(); if(plnSection.Contains(plnFace.Location(), Precision::Confusion()) && plnFace.Axis().IsParallel(plnSection.Axis(), Precision::Angular())) { dbAdded++; builder.Add(result, face); } } } return result; } //! get display geometry for Section faces std::vector DrawViewSection::getFaceGeometry() { std::vector result; TopoDS_Compound c = sectionFaces; TopExp_Explorer faces(c, TopAbs_FACE); for (; faces.More(); faces.Next()) { TechDraw::Face* f = new TechDraw::Face(); const TopoDS_Face& face = TopoDS::Face(faces.Current()); TopExp_Explorer wires(face, TopAbs_WIRE); for (; wires.More(); wires.Next()) { TechDraw::Wire* w = new TechDraw::Wire(); const TopoDS_Wire& wire = TopoDS::Wire(wires.Current()); TopExp_Explorer edges(wire, TopAbs_EDGE); for (; edges.More(); edges.Next()) { const TopoDS_Edge& edge = TopoDS::Edge(edges.Current()); //dumpEdge("edge",edgeCount,edge); TechDraw::BaseGeom* base = TechDraw::BaseGeom::baseFactory(edge); w->geoms.push_back(base); } f->wires.push_back(w); } result.push_back(f); } return result; } //! project a single face using HLR - used for section faces TopoDS_Face DrawViewSection::projectFace(const TopoDS_Shape &face, gp_Pnt faceCenter, const Base::Vector3d &direction) { if(face.IsNull()) { throw Base::ValueError("DrawViewSection::projectFace - input Face is NULL"); } Base::Vector3d origin(faceCenter.X(),faceCenter.Y(),faceCenter.Z()); gp_Ax2 viewAxis = getViewAxis(origin,direction); HLRBRep_Algo *brep_hlr = new HLRBRep_Algo(); brep_hlr->Add(face); HLRAlgo_Projector projector( viewAxis ); brep_hlr->Projector(projector); brep_hlr->Update(); brep_hlr->Hide(); HLRBRep_HLRToShape hlrToShape(brep_hlr); TopoDS_Shape hardEdges = hlrToShape.VCompound(); // TopoDS_Shape outEdges = hlrToShape.OutLineVCompound(); std::vector faceEdges; TopExp_Explorer expl(hardEdges, TopAbs_EDGE); int i; for (i = 1 ; expl.More(); expl.Next(),i++) { const TopoDS_Edge& edge = TopoDS::Edge(expl.Current()); if (edge.IsNull()) { Base::Console().Log("INFO - DVS::projectFace - hard edge: %d is NULL\n",i); continue; } faceEdges.push_back(edge); } //TODO: verify that outline edges aren't required //if edge is both hard & outline, it will be duplicated? are hard edges enough? // TopExp_Explorer expl2(outEdges, TopAbs_EDGE); // for (i = 1 ; expl2.More(); expl2.Next(),i++) { // const TopoDS_Edge& edge = TopoDS::Edge(expl2.Current()); // if (edge.IsNull()) { // Base::Console().Log("INFO - GO::projectFace - outline edge: %d is NULL\n",i); // continue; // } // bool addEdge = true; // //is edge already in faceEdges? maybe need to use explorer for this for IsSame to work? // for (auto& e:faceEdges) { // if (e.IsPartner(edge)) { // addEdge = false; // Base::Console().Message("TRACE - DVS::projectFace - skipping an edge 1\n"); // } // } // expl.ReInit(); // for (; expl.More(); expl.Next()){ // const TopoDS_Edge& eHard = TopoDS::Edge(expl.Current()); // if (eHard.IsPartner(edge)) { // addEdge = false; // Base::Console().Message("TRACE - DVS::projectFace - skipping an edge 2\n"); // } // } // if (addEdge) { // faceEdges.push_back(edge); // } // } TopoDS_Face projectedFace; if (faceEdges.empty()) { Base::Console().Log("LOG - DVS::projectFace - no faceEdges\n"); return projectedFace; } //recreate the wires for this single face EdgeWalker ew; ew.loadEdges(faceEdges); bool success = ew.perform(); if (success) { std::vector fw = ew.getResultNoDups(); if (!fw.empty()) { std::vector sortedWires = ew.sortStrip(fw, true); if (sortedWires.empty()) { return projectedFace; } BRepBuilderAPI_MakeFace mkFace(sortedWires.front(),true); //true => only want planes? std::vector::iterator itWire = ++sortedWires.begin(); //starting with second face for (; itWire != sortedWires.end(); itWire++) { mkFace.Add(*itWire); } projectedFace = mkFace.Face(); } } else { Base::Console().Warning("DVS::projectFace - input is not planar graph. No face detection\n"); } return projectedFace; } //this should really be in BoundBox.h //!check if point is in box or on boundary of box //!compare to isInBox which doesn't allow on boundary bool DrawViewSection::isReallyInBox (const Base::Vector3d v, const Base::BoundBox3d bb) const { if (v.x <= bb.MinX || v.x >= bb.MaxX) return false; if (v.y <= bb.MinY || v.y >= bb.MaxY) return false; if (v.z <= bb.MinZ || v.z >= bb.MaxZ) return false; return true; } bool DrawViewSection::isReallyInBox (const gp_Pnt p, const Bnd_Box& bb) const { return !bb.IsOut(p); } //! calculate the section Normal/Projection Direction given baseView projection direction and section name Base::Vector3d DrawViewSection::getSectionVector (const std::string sectionName) { Base::Vector3d result; Base::Vector3d stdX(1.0,0.0,0.0); Base::Vector3d stdY(0.0,1.0,0.0); Base::Vector3d stdZ(0.0,0.0,1.0); double adjustAngle = 0.0; if (getBaseDPGI() != nullptr) { adjustAngle = getBaseDPGI()->getRotateAngle(); } Base::Vector3d view = getBaseDVP()->Direction.getValue(); view.Normalize(); Base::Vector3d left = view.Cross(stdZ); left.Normalize(); Base::Vector3d up = view.Cross(left); up.Normalize(); double dot = view.Dot(stdZ); if (sectionName == "Up") { result = up; if (DrawUtil::fpCompare(dot,1.0)) { //view = stdZ result = (-1.0 * stdY); } else if (DrawUtil::fpCompare(dot,-1.0)) { //view = -stdZ result = stdY; } } else if (sectionName == "Down") { result = up * -1.0; if (DrawUtil::fpCompare(dot,1.0)) { //view = stdZ result = stdY; } else if (DrawUtil::fpCompare(dot, -1.0)) { //view = -stdZ result = (-1.0 * stdY); } } else if (sectionName == "Left") { result = left * -1.0; if (DrawUtil::fpCompare(fabs(dot),1.0)) { //view = +/- stdZ result = stdX; } } else if (sectionName == "Right") { result = left; if (DrawUtil::fpCompare(fabs(dot),1.0)) { result = -1.0 * stdX; } } else { Base::Console().Log("Error - DVS::getSectionVector - bad sectionName: %s\n",sectionName.c_str()); result = stdZ; } Base::Vector3d adjResult = DrawUtil::vecRotate(result,adjustAngle,view); return adjResult; } std::vector DrawViewSection::getDrawableLines(int i) { std::vector result; result = DrawGeomHatch::getTrimmedLines(this,m_lineSets,i,HatchScale.getValue()); return result; } std::vector DrawViewSection::getWireForFace(int idx) const { std::vector result; result.push_back(sectionFaceWires.at(idx)); return result; } void DrawViewSection::unsetupObject() { TechDraw::DrawViewPart* base = getBaseDVP(); if (base != nullptr) { base->touch(); } DrawViewPart::unsetupObject(); } TechDraw::DrawViewPart* DrawViewSection::getBaseDVP() { TechDraw::DrawViewPart* baseDVP = nullptr; App::DocumentObject* base = BaseView.getValue(); if (base != nullptr) { if (base->getTypeId().isDerivedFrom(TechDraw::DrawViewPart::getClassTypeId())) { baseDVP = static_cast(base); } } return baseDVP; } TechDraw::DrawProjGroupItem* DrawViewSection::getBaseDPGI() { TechDraw::DrawProjGroupItem* baseDPGI = nullptr; App::DocumentObject* base = BaseView.getValue(); if (base != nullptr) { if (base->getTypeId().isDerivedFrom(TechDraw::DrawProjGroupItem::getClassTypeId())) { baseDPGI = static_cast(base); } } return baseDPGI; } void DrawViewSection::getParameters() { Base::Reference hGrp = App::GetApplication().GetUserParameter() .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/TechDraw"); std::string defaultDir = App::Application::getResourceDir() + "Mod/Drawing/patterns/"; std::string defaultFileName = defaultDir + "simple.svg"; QString patternFileName = QString::fromStdString(hGrp->GetASCII("FileHatch",defaultFileName.c_str())); if (patternFileName.isEmpty()) { patternFileName = QString::fromStdString(defaultFileName); } QFileInfo tfi(patternFileName); if (tfi.isReadable()) { FileHatchPattern.setValue(patternFileName.toUtf8().constData()); } std::string patternName = hGrp->GetASCII("PatternName","Diamond"); NameGeomPattern.setValue(patternName); hGrp = App::GetApplication().GetUserParameter() .GetGroup("BaseApp")->GetGroup("Preferences")->GetGroup("Mod/TechDraw/General"); bool fuseFirst = hGrp->GetBool("SectionFuseFirst",true); FuseBeforeCut.setValue(fuseFirst); } // Python Drawing feature --------------------------------------------------------- namespace App { /// @cond DOXERR PROPERTY_SOURCE_TEMPLATE(TechDraw::DrawViewSectionPython, TechDraw::DrawViewSection) template<> const char* TechDraw::DrawViewSectionPython::getViewProviderName(void) const { return "TechDrawGui::ViewProviderDrawingView"; } /// @endcond // explicit template instantiation template class TechDrawExport FeaturePythonT; }