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630 lines
21 KiB
C++
630 lines
21 KiB
C++
#ifndef FILE_OCCGEOM
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#define FILE_OCCGEOM
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/* *************************************************************************/
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/* File: occgeom.hpp */
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/* Author: Robert Gaisbauer */
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/* Date: 26. May 03 */
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/* *************************************************************************/
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#ifdef OCCGEOMETRY
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#include <set>
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#include <meshing.hpp>
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#include "occ_utils.hpp"
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#include "occmeshsurf.hpp"
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#include <Quantity_ColorRGBA.hxx>
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#include <STEPCAFControl_Reader.hxx>
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#include <StepBasic_MeasureValueMember.hxx>
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#include <StepRepr_CompoundRepresentationItem.hxx>
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#include <StepRepr_IntegerRepresentationItem.hxx>
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#include <StepRepr_ValueRepresentationItem.hxx>
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#include <TCollection_HAsciiString.hxx>
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#include <TDocStd_Document.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Shape.hxx>
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#include <Transfer_FinderProcess.hxx>
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#if OCC_VERSION_MAJOR>=7 && OCC_VERSION_MINOR>=4
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#define OCC_HAVE_HISTORY
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#endif
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namespace netgen
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{
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// extern DLL_HEADER MeshingParameters mparam;
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#define PROJECTION_TOLERANCE 1e-10
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#define ENTITYISVISIBLE 1
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#define ENTITYISHIGHLIGHTED 2
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#define ENTITYISDRAWABLE 4
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#define OCCGEOMETRYVISUALIZATIONNOCHANGE 0
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#define OCCGEOMETRYVISUALIZATIONFULLCHANGE 1 // Compute transformation matrices and redraw
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#define OCCGEOMETRYVISUALIZATIONHALFCHANGE 2 // Redraw
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bool IsMappedShape(const Transformation<3> & trafo, const TopoDS_Shape & me, const TopoDS_Shape & you);
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class EntityVisualizationCode
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{
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int code;
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public:
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EntityVisualizationCode()
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{ code = ENTITYISVISIBLE + !ENTITYISHIGHLIGHTED + ENTITYISDRAWABLE;}
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int IsVisible ()
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{ return code & ENTITYISVISIBLE;}
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int IsHighlighted ()
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{ return code & ENTITYISHIGHLIGHTED;}
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int IsDrawable ()
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{ return code & ENTITYISDRAWABLE;}
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void Show ()
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{ code |= ENTITYISVISIBLE;}
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void Hide ()
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{ code &= ~ENTITYISVISIBLE;}
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void Highlight ()
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{ code |= ENTITYISHIGHLIGHTED;}
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void Lowlight ()
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{ code &= ~ENTITYISHIGHLIGHTED;}
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void SetDrawable ()
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{ code |= ENTITYISDRAWABLE;}
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void SetNotDrawable ()
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{ code &= ~ENTITYISDRAWABLE;}
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};
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class Line
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{
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public:
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Point<3> p0, p1;
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int layer = 1;
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double Dist (Line l);
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double Length () { return (p1-p0).Length(); }
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};
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inline double Det3 (double a00, double a01, double a02,
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double a10, double a11, double a12,
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double a20, double a21, double a22)
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{
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return a00*a11*a22 + a01*a12*a20 + a10*a21*a02 - a20*a11*a02 - a10*a01*a22 - a21*a12*a00;
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}
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class DLL_HEADER OCCParameters
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{
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public:
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/// Factor for meshing close edges, moved to meshingparameters
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// double resthcloseedgefac = 2.;
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/// Enable / Disable detection of close edges
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// int resthcloseedgeenable = true;
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/// Minimum edge length to be used for dividing edges to mesh points
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// double resthminedgelen = 0.001;
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double resthminedgelen = 1e-4;
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/// Enable / Disable use of the minimum edge length (by default use 1e-4)
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int resthminedgelenenable = false;
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/*!
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Dump all the OpenCascade specific meshing parameters
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to console
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*/
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void Print (ostream & ost) const;
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};
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class DLL_HEADER OCCGeometry : public NetgenGeometry
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{
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Point<3> center;
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OCCParameters occparam;
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public:
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static TopTools_IndexedMapOfShape global_shape_property_indices;
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static std::vector<ShapeProperties> global_shape_properties;
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static TopTools_IndexedMapOfShape global_identification_indices;
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static std::vector<std::vector<OCCIdentification>> global_identifications;
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static ShapeProperties& GetProperties(const TopoDS_Shape& shape)
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{
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auto index = OCCGeometry::global_shape_property_indices.FindIndex(shape);
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if(index > 0)
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return OCCGeometry::global_shape_properties
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[index-1];
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OCCGeometry::global_shape_property_indices.Add(shape);
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OCCGeometry::global_shape_properties.push_back({});
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return OCCGeometry::global_shape_properties.back();
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}
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static bool HaveProperties(const TopoDS_Shape& shape)
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{
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return OCCGeometry::global_shape_property_indices.FindIndex(shape) > 0;
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}
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static std::vector<OCCIdentification>& GetIdentifications(const TopoDS_Shape& shape)
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{
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auto index = OCCGeometry::global_identification_indices.FindIndex(shape);
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if(index > 0)
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return OCCGeometry::global_identifications[index-1];
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OCCGeometry::global_identification_indices.Add(shape);
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OCCGeometry::global_identifications.push_back({});
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return OCCGeometry::global_identifications.back();
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}
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static bool HaveIdentifications(const TopoDS_Shape& shape)
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{
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return OCCGeometry::global_identification_indices.FindIndex(shape) > 0;
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}
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TopoDS_Shape shape;
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TopTools_IndexedMapOfShape fmap, emap, vmap, somap, shmap, wmap;
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NgArray<bool> fsingular, esingular, vsingular;
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Box<3> boundingbox;
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mutable int changed;
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mutable NgArray<int> facemeshstatus;
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// Philippose - 15/01/2009
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// Maximum mesh size for a given face
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// (Used to explicitly define mesh size limits on individual faces)
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NgArray<double> face_maxh;
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// Philippose - 14/01/2010
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// Boolean array to detect whether a face has been explicitly modified
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// by the user or not
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NgArray<bool> face_maxh_modified;
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// Philippose - 15/01/2009
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// Indicates which faces have been selected by the user in geometry mode
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// (Currently handles only selection of one face at a time, but an array would
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// help to extend this to multiple faces)
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NgArray<bool> face_sel_status;
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NgArray<EntityVisualizationCode> fvispar, evispar, vvispar;
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double tolerance;
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bool fixsmalledges;
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bool fixspotstripfaces;
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bool sewfaces;
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bool makesolids;
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bool splitpartitions;
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OCCGeometry()
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{
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somap.Clear();
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shmap.Clear();
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fmap.Clear();
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wmap.Clear();
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emap.Clear();
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vmap.Clear();
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}
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OCCGeometry(const TopoDS_Shape& _shape, int aoccdim = 3, bool copy = false);
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Mesh::GEOM_TYPE GetGeomType() const override
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{ return Mesh::GEOM_OCC; }
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void SetDimension(int dim)
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{
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dimension = dim;
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BuildFMap();
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}
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void SetOCCParameters(const OCCParameters& par)
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{ occparam = par; }
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using NetgenGeometry::GetVertex;
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using NetgenGeometry::GetEdge;
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using NetgenGeometry::GetFace;
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GeometryShape & GetShape(const TopoDS_Shape & shape)
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{
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return const_cast<GeometryShape&>(as_const(*this).GetShape(shape));
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}
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GeometryVertex & GetVertex(const TopoDS_Shape & shape)
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{
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return const_cast<GeometryVertex&>(as_const(*this).GetVertex(shape));
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}
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GeometryEdge & GetEdge(const TopoDS_Shape & shape)
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{
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return const_cast<GeometryEdge&>(as_const(*this).GetEdge(shape));
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}
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GeometryFace & GetFace(const TopoDS_Shape & shape)
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{
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return const_cast<GeometryFace&>(as_const(*this).GetFace(shape));
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}
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const GeometryShape & GetShape(const TopoDS_Shape & shape) const;
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const GeometryVertex & GetVertex(const TopoDS_Shape & shape) const;
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const GeometryEdge & GetEdge(const TopoDS_Shape & shape) const;
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const GeometryFace & GetFace(const TopoDS_Shape & shape) const;
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void Analyse(Mesh& mesh,
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const MeshingParameters& mparam) const override;
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bool MeshFace(Mesh& mesh, const MeshingParameters& mparam,
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int nr, FlatArray<int, PointIndex> glob2loc) const override;
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// void OptimizeSurface(Mesh& mesh, const MeshingParameters& mparam) const override {}
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void Save (const filesystem::path & filename) const override;
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void SaveToMeshFile (ostream & /* ost */) const override;
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void DoArchive(Archive& ar) override;
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void BuildFMap();
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auto GetShape() const { return shape; }
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Box<3> GetBoundingBox() const
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{ return boundingbox; }
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int NrSolids() const
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{ return somap.Extent(); }
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// Philippose - 17/01/2009
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// Total number of faces in the geometry
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int NrFaces() const
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{ return fmap.Extent(); }
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void SetCenter()
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{ center = boundingbox.Center(); }
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Point<3> Center() const
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{ return center; }
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OCCSurface GetSurface (int surfi)
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{
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cout << "OCCGeometry::GetSurface using PLANESPACE" << endl;
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return OCCSurface (TopoDS::Face(fmap(surfi)), PLANESPACE);
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}
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void CalcBoundingBox ();
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void BuildVisualizationMesh (double deflection);
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void RecursiveTopologyTree (const TopoDS_Shape & sh,
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stringstream & str,
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TopAbs_ShapeEnum l,
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bool free,
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const char * lname);
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void GetTopologyTree (stringstream & str);
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void PrintNrShapes ();
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void CheckIrregularEntities (stringstream & str);
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void SewFaces();
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void MakeSolid();
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Array<const GeometryVertex*> GetFaceVertices(const GeometryFace& face) const override;
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void HealGeometry();
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void GlueGeometry();
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// Philippose - 15/01/2009
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// Sets the maximum mesh size for a given face
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// (Note: Local mesh size limited by the global max mesh size)
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void SetFaceMaxH(int facenr, double faceh, const MeshingParameters & mparam)
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{
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if((facenr> 0) && (facenr <= fmap.Extent()))
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{
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face_maxh[facenr-1] = min(mparam.maxh,faceh);
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// Philippose - 14/01/2010
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// If the face maxh is greater than or equal to the
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// current global maximum, then identify the face as
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// not explicitly controlled by the user any more
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if(faceh >= mparam.maxh)
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{
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face_maxh_modified[facenr-1] = 0;
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}
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else
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{
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face_maxh_modified[facenr-1] = 1;
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}
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}
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}
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void SetFaceMaxH(size_t facenr, double faceh)
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{
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if(facenr >= fmap.Extent())
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throw RangeException("OCCGeometry faces", facenr, 0, fmap.Extent());
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face_maxh[facenr] = faceh;
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face_maxh_modified[facenr] = true;
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}
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// Philippose - 15/01/2009
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// Returns the local mesh size of a given face
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double GetFaceMaxH(int facenr)
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{
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if((facenr> 0) && (facenr <= fmap.Extent()))
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{
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return face_maxh[facenr-1];
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}
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else
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{
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return 0.0;
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}
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}
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// Philippose - 14/01/2010
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// Returns the flag whether the given face
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// has a mesh size controlled by the user or not
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bool GetFaceMaxhModified(int facenr)
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{
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return face_maxh_modified[facenr-1];
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}
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// Philippose - 17/01/2009
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// Returns the index of the currently selected face
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int SelectedFace()
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{
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for(int i = 1; i <= fmap.Extent(); i++)
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{
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if(face_sel_status[i-1])
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{
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return i;
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}
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}
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return 0;
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}
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// Philippose - 17/01/2009
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// Sets the currently selected face
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void SetSelectedFace(int facenr)
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{
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face_sel_status = 0;
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if((facenr >= 1) && (facenr <= fmap.Extent()))
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{
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face_sel_status[facenr-1] = 1;
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}
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}
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void LowLightAll()
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{
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for (int i = 1; i <= fmap.Extent(); i++)
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fvispar[i-1].Lowlight();
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for (int i = 1; i <= emap.Extent(); i++)
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evispar[i-1].Lowlight();
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for (int i = 1; i <= vmap.Extent(); i++)
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vvispar[i-1].Lowlight();
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}
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void GetUnmeshedFaceInfo (stringstream & str);
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void GetNotDrawableFaces (stringstream & str);
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bool ErrorInSurfaceMeshing ();
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// void WriteOCC_STL(char * filename);
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private:
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//bool FastProject (int surfi, Point<3> & ap, double& u, double& v) const;
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};
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void Identify(const ListOfShapes & me, const ListOfShapes & you, string name, Identifications::ID_TYPE type, Transformation<3> trafo);
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void Identify(const TopoDS_Shape & me, const TopoDS_Shape & you, string name, Identifications::ID_TYPE type, std::optional<std::variant<gp_Trsf, gp_GTrsf>> opt_trafo);
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void PrintContents (OCCGeometry * geom);
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DLL_HEADER OCCGeometry * LoadOCC_IGES (const filesystem::path & filename);
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DLL_HEADER OCCGeometry * LoadOCC_STEP (const filesystem::path & filename);
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DLL_HEADER OCCGeometry * LoadOCC_BREP (const filesystem::path & filename);
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// Philippose - 31.09.2009
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// External access to the mesh generation functions within the OCC
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// subsystem (Not sure if this is the best way to implement this....!!)
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DLL_HEADER extern void OCCSetLocalMeshSize(const OCCGeometry & geom, Mesh & mesh, const MeshingParameters & mparam,
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const OCCParameters& occparam);
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DLL_HEADER extern bool OCCMeshFace (const OCCGeometry & geom, Mesh & mesh, FlatArray<int, PointIndex> glob2loc,
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const MeshingParameters & mparam, int nr, int projecttype, bool delete_on_failure);
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template <class TBuilder>
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void PropagateIdentifications (TBuilder & builder, TopoDS_Shape shape, std::optional<Transformation<3>> trafo = nullopt)
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{
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TopTools_IndexedMapOfShape mod_indices;
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Array<TopTools_IndexedMapOfShape> modifications;
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TopTools_MapOfShape shape_handled;
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Transformation<3> trafo_inv;
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if(trafo)
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trafo_inv = trafo->CalcInverse();
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for (auto typ : { TopAbs_SOLID, TopAbs_FACE, TopAbs_EDGE, TopAbs_VERTEX })
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for (TopExp_Explorer e(shape, typ); e.More(); e.Next())
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{
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auto s = e.Current();
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mod_indices.Add(s);
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modifications.Append(TopTools_IndexedMapOfShape());
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modifications.Last().Add(s);
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}
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for (auto typ : { TopAbs_SOLID, TopAbs_FACE, TopAbs_EDGE, TopAbs_VERTEX })
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for (TopExp_Explorer e(shape, typ); e.More(); e.Next())
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{
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auto s = e.Current();
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for (auto mods : builder.Modified(s))
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{
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auto index = mod_indices.FindIndex(s)-1;
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modifications[index].Add(mods);
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}
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}
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for (auto typ : { TopAbs_SOLID, TopAbs_FACE, TopAbs_EDGE, TopAbs_VERTEX })
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for (TopExp_Explorer e(shape, typ); e.More(); e.Next())
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{
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auto s = e.Current();
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if(shape_handled.Contains(s))
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continue;
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shape_handled.Add(s);
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if(!OCCGeometry::HaveIdentifications(s))
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continue;
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auto& identifications = OCCGeometry::GetIdentifications(s);
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auto& shape_mapped = modifications[mod_indices.FindIndex(s)-1];
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for(auto ident : identifications)
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{
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auto i1 = mod_indices.FindIndex(ident.to);
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auto i2 = mod_indices.FindIndex(ident.from);
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if(i1 == 0 || i2 == 0) // not in geometry
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continue;
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auto& mods_to = modifications[i1-1];
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auto& mods_from = modifications[i2-1];
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if(mods_to.Extent()==1 && mods_from.Extent() ==1)
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continue;
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auto from = ident.from;
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auto to = ident.to;
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for(auto it = mods_from.cbegin(); it != mods_from.cend(); it++)
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for(auto it2 = mods_to.cbegin(); it2 != mods_to.cend(); it2++)
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{
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auto& from_mapped = it.Iterator().Value();
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auto& to_mapped = it2.Iterator().Value();
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if(from.IsSame(from_mapped) && to.IsSame(to_mapped))
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continue;
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Transformation<3> trafo_mapped = ident.trafo;
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if(trafo)
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{
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Transformation<3> trafo_temp;
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trafo_temp.Combine(ident.trafo, trafo_inv);
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trafo_mapped.Combine(*trafo, trafo_temp);
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}
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if(!IsMappedShape(trafo_mapped, from_mapped, to_mapped))
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continue;
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OCCIdentification id_new = ident;
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id_new.to = to_mapped;
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id_new.from = from_mapped;
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id_new.trafo = trafo_mapped;
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auto id_owner = from.IsSame(s) ? from_mapped : to_mapped;
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OCCGeometry::GetIdentifications(id_owner).push_back(id_new);
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}
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}
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}
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}
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|
|
|
template <class TBuilder>
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|
void PropagateProperties (TBuilder & builder, TopoDS_Shape shape, std::optional<Transformation<3>> trafo = nullopt)
|
|
{
|
|
bool have_identifications = false;
|
|
|
|
for (auto typ : { TopAbs_SOLID, TopAbs_FACE, TopAbs_EDGE, TopAbs_VERTEX })
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|
for (TopExp_Explorer e(shape, typ); e.More(); e.Next())
|
|
{
|
|
auto s = e.Current();
|
|
have_identifications |= OCCGeometry::HaveIdentifications(s);
|
|
if(!OCCGeometry::HaveProperties(s))
|
|
continue;
|
|
auto prop = OCCGeometry::GetProperties(s);
|
|
for (auto mods : builder.Modified(s))
|
|
OCCGeometry::GetProperties(mods).Merge(prop);
|
|
}
|
|
if(have_identifications)
|
|
PropagateIdentifications(builder, shape, trafo);
|
|
}
|
|
|
|
namespace step_utils
|
|
{
|
|
inline Handle(TCollection_HAsciiString) MakeName (string s)
|
|
{
|
|
return new TCollection_HAsciiString(s.c_str());
|
|
};
|
|
|
|
inline Handle(StepRepr_RepresentationItem) MakeInt (int n, string name = "")
|
|
{
|
|
Handle(StepRepr_IntegerRepresentationItem) int_obj = new StepRepr_IntegerRepresentationItem;
|
|
int_obj->Init(MakeName(name), n);
|
|
return int_obj;
|
|
}
|
|
|
|
inline int ReadInt (Handle(StepRepr_RepresentationItem) item)
|
|
{
|
|
return Handle(StepRepr_IntegerRepresentationItem)::DownCast(item)->Value();
|
|
}
|
|
|
|
inline Handle(StepRepr_RepresentationItem) MakeReal (double val, string name = "")
|
|
{
|
|
Handle(StepBasic_MeasureValueMember) value_member = new StepBasic_MeasureValueMember;
|
|
value_member->SetReal(val);
|
|
Handle(StepRepr_ValueRepresentationItem) value_repr = new StepRepr_ValueRepresentationItem;
|
|
value_repr->Init(MakeName(name), value_member);
|
|
return value_repr;
|
|
}
|
|
|
|
inline double ReadReal (Handle(StepRepr_RepresentationItem) item)
|
|
{
|
|
return Handle(StepRepr_ValueRepresentationItem)::DownCast(item)
|
|
->ValueComponentMember()->Real();
|
|
}
|
|
|
|
|
|
inline Handle(StepRepr_RepresentationItem) MakeCompound( FlatArray<Handle(StepRepr_RepresentationItem)> items, string name = "" )
|
|
{
|
|
Handle(StepRepr_HArray1OfRepresentationItem) array_repr = new StepRepr_HArray1OfRepresentationItem(1,items.Size());
|
|
|
|
for(auto i : Range(items))
|
|
array_repr->SetValue(i+1, items[i]);
|
|
|
|
Handle(StepRepr_CompoundRepresentationItem) comp = new StepRepr_CompoundRepresentationItem;
|
|
comp->Init( MakeName(name), array_repr );
|
|
return comp;
|
|
}
|
|
|
|
void WriteIdentifications(const Handle(Interface_InterfaceModel) model, const TopoDS_Shape & shape, const Handle(Transfer_FinderProcess) finder);
|
|
void ReadIdentifications(Handle(StepRepr_RepresentationItem) item, Handle(Transfer_TransientProcess) transProc);
|
|
|
|
inline Quantity_ColorRGBA MakeColor(const Vec<4> & c)
|
|
{
|
|
return Quantity_ColorRGBA (c[0], c[1], c[2], c[3]);
|
|
}
|
|
|
|
inline Vec<4> ReadColor (const Quantity_ColorRGBA & c)
|
|
{
|
|
auto rgb = c.GetRGB();
|
|
return {rgb.Red(), rgb.Green(), rgb.Blue(), c.Alpha()};
|
|
}
|
|
|
|
|
|
void LoadProperties(const TopoDS_Shape & shape,
|
|
const STEPCAFControl_Reader & reader,
|
|
const Handle(TDocStd_Document) step_doc);
|
|
void WriteProperties(const Handle(Interface_InterfaceModel) model, const Handle(Transfer_FinderProcess) finder, const TopoDS_Shape & shape);
|
|
|
|
void WriteSTEP(const TopoDS_Shape & shape, const filesystem::path & filename);
|
|
|
|
inline void WriteSTEP(const OCCGeometry & geo, const filesystem::path & filename)
|
|
{
|
|
WriteSTEP(geo.GetShape(), filename);
|
|
}
|
|
|
|
// deep copy, also ensures consistent shape ordering (face numbers etc.)
|
|
TopoDS_Shape WriteAndRead(const TopoDS_Shape shape);
|
|
} // namespace step_utils
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|