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679 lines
22 KiB
C++
679 lines
22 KiB
C++
// Created on: 2013-09-16
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// Copyright (c) 2013-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <StdPrs_BRepFont.hxx>
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#include <BRep_Tool.hxx>
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#include <BRepTopAdaptor_FClass2d.hxx>
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#include <BRepBuilderAPI_MakeFace.hxx>
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#include <BRepBuilderAPI_MakeWire.hxx>
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#include <BRepLib_MakeEdge.hxx>
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#include <Font_FTLibrary.hxx>
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#include <Font_FontMgr.hxx>
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#include <GCE2d_MakeSegment.hxx>
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#include <Geom_BezierCurve.hxx>
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#include <Geom_BSplineCurve.hxx>
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#include <Geom2d_TrimmedCurve.hxx>
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#include <Geom_Plane.hxx>
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#include <Geom2d_BezierCurve.hxx>
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#include <Geom2d_BSplineCurve.hxx>
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#include <Geom2d_Line.hxx>
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#include <GeomAPI.hxx>
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#include <GeomAdaptor_Surface.hxx>
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#include <GeomLib.hxx>
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#include <gp_Pln.hxx>
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#include <TCollection_AsciiString.hxx>
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#include <TCollection_HAsciiString.hxx>
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#include <TopExp.hxx>
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#include <TopExp_Explorer.hxx>
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#include <TopoDS.hxx>
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#include <TopoDS_Compound.hxx>
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#include <TopoDS_Vertex.hxx>
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#include <TopTools_DataMapOfShapeInteger.hxx>
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#include <TopTools_DataMapOfShapeSequenceOfShape.hxx>
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#ifdef HAVE_FREETYPE
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#endif
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IMPLEMENT_STANDARD_RTTIEXT(StdPrs_BRepFont, Standard_Transient)
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namespace
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{
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// pre-defined font rendering options
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static const unsigned int THE_FONT_SIZE = 72;
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static const unsigned int THE_RESOLUTION_DPI = 4800;
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static const Font_FTFontParams THE_FONT_PARAMS (THE_FONT_SIZE, THE_RESOLUTION_DPI);
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// compute scaling factor for specified font size
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inline Standard_Real getScale (const Standard_Real theSize)
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{
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return theSize / Standard_Real(THE_FONT_SIZE) * 72.0 / Standard_Real(THE_RESOLUTION_DPI);
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}
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#ifdef HAVE_FREETYPE
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//! Auxiliary method to convert FT_Vector to gp_XY
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static gp_XY readFTVec (const FT_Vector& theVec,
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const Standard_Real theScaleUnits,
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const Standard_Real theWidthScaling = 1.0)
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{
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return gp_XY (theScaleUnits * Standard_Real(theVec.x) * theWidthScaling / 64.0, theScaleUnits * Standard_Real(theVec.y) / 64.0);
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}
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//! Auxiliary method for classification wire theW2 with respect to wire theW1
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static TopAbs_State classifyWW (const TopoDS_Wire& theW1,
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const TopoDS_Wire& theW2,
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const TopoDS_Face& theF)
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{
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TopAbs_State aRes = TopAbs_UNKNOWN;
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TopoDS_Face aF = TopoDS::Face (theF.EmptyCopied());
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aF.Orientation (TopAbs_FORWARD);
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BRep_Builder aB;
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aB.Add (aF, theW1);
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BRepTopAdaptor_FClass2d aClass2d (aF, ::Precision::PConfusion());
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for (TopoDS_Iterator anEdgeIter (theW2); anEdgeIter.More(); anEdgeIter.Next())
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{
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const TopoDS_Edge& anEdge = TopoDS::Edge (anEdgeIter.Value());
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Standard_Real aPFirst = 0.0, aPLast = 0.0;
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Handle(Geom2d_Curve) aCurve2d = BRep_Tool::CurveOnSurface (anEdge, theF, aPFirst, aPLast);
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if (aCurve2d.IsNull())
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{
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continue;
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}
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gp_Pnt2d aPnt2d = aCurve2d->Value ((aPFirst + aPLast) / 2.0);
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TopAbs_State aState = aClass2d.Perform (aPnt2d, Standard_False);
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if (aState == TopAbs_OUT
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|| aState == TopAbs_IN)
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{
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if (aRes == TopAbs_UNKNOWN)
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{
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aRes = aState;
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}
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else if (aRes != aState)
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{
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return TopAbs_UNKNOWN;
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}
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}
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}
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return aRes;
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}
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#endif
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}
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// =======================================================================
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// function : Constructor
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// purpose :
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// =======================================================================
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StdPrs_BRepFont::StdPrs_BRepFont ()
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: myPrecision (Precision::Confusion()),
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myScaleUnits (1.0),
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myIsCompositeCurve (Standard_False),
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my3Poles (1, 3),
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my4Poles (1, 4)
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{
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myFTFont = new Font_FTFont();
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init();
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}
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// =======================================================================
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// function : init
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// purpose :
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// =======================================================================
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void StdPrs_BRepFont::init()
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{
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mySurface = new Geom_Plane (gp_Pln (gp::XOY()));
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myCurve2dAdaptor = new Geom2dAdaptor_Curve();
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Handle(Adaptor3d_Surface) aSurfAdaptor = new GeomAdaptor_Surface (mySurface);
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myCurvOnSurf.Load (aSurfAdaptor);
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}
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// =======================================================================
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// function : Constructor
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// purpose :
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// =======================================================================
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StdPrs_BRepFont::StdPrs_BRepFont (const NCollection_String& theFontPath,
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const Standard_Real theSize,
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const Standard_Integer theFaceId)
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: myPrecision (Precision::Confusion()),
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myScaleUnits (1.0),
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myIsCompositeCurve (Standard_False),
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my3Poles (1, 3),
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my4Poles (1, 4)
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{
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init();
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if (theSize <= myPrecision * 100.0)
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{
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return;
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}
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myScaleUnits = getScale (theSize);
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myFTFont = new Font_FTFont();
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myFTFont->Init (theFontPath.ToCString(), THE_FONT_PARAMS, theFaceId);
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}
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// =======================================================================
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// function : Constructor
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// purpose :
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// =======================================================================
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StdPrs_BRepFont::StdPrs_BRepFont (const NCollection_String& theFontName,
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const Font_FontAspect theFontAspect,
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const Standard_Real theSize,
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const Font_StrictLevel theStrictLevel)
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: myPrecision (Precision::Confusion()),
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myScaleUnits (1.0),
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myIsCompositeCurve (Standard_False),
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my3Poles (1, 3),
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my4Poles (1, 4)
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{
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init();
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if (theSize <= myPrecision * 100.0)
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{
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return;
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}
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myScaleUnits = getScale (theSize);
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myFTFont = new Font_FTFont();
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myFTFont->FindAndInit (theFontName.ToCString(), theFontAspect, THE_FONT_PARAMS, theStrictLevel);
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}
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// =======================================================================
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// function : Release
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// purpose :
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// =======================================================================
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void StdPrs_BRepFont::Release()
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{
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myCache.Clear();
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myFTFont->Release();
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}
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// =======================================================================
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// function : FindAndCreate
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// purpose :
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// =======================================================================
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Handle(StdPrs_BRepFont) StdPrs_BRepFont::FindAndCreate (const TCollection_AsciiString& theFontName,
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const Font_FontAspect theFontAspect,
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const Standard_Real theSize,
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const Font_StrictLevel theStrictLevel)
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{
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Handle(StdPrs_BRepFont) aFont = new StdPrs_BRepFont();
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if (aFont->FindAndInit (theFontName, theFontAspect, theSize, theStrictLevel))
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return aFont;
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return Handle(StdPrs_BRepFont)();
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}
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// =======================================================================
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// function : SetCompositeCurveMode
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// purpose :
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// =======================================================================
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void StdPrs_BRepFont::SetCompositeCurveMode (const Standard_Boolean theToConcatenate)
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{
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if (myIsCompositeCurve != theToConcatenate)
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{
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myIsCompositeCurve = theToConcatenate;
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myCache.Clear();
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}
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}
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// =======================================================================
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// function : Init
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// purpose :
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// =======================================================================
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bool StdPrs_BRepFont::Init (const NCollection_String& theFontPath,
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const Standard_Real theSize,
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const Standard_Integer theFaceId)
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{
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if (theSize <= myPrecision * 100.0)
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{
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return false;
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}
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myScaleUnits = getScale (theSize);
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myCache.Clear();
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return myFTFont->Init (theFontPath.ToCString(), THE_FONT_PARAMS, theFaceId);
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}
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// =======================================================================
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// function : FindAndInit
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// purpose :
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// =======================================================================
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bool StdPrs_BRepFont::FindAndInit (const TCollection_AsciiString& theFontName,
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const Font_FontAspect theFontAspect,
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const Standard_Real theSize,
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const Font_StrictLevel theStrictLevel)
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{
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if (theSize <= myPrecision * 100.0)
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{
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return false;
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}
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myScaleUnits = getScale (theSize);
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myCache.Clear();
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return myFTFont->FindAndInit (theFontName.ToCString(), theFontAspect, THE_FONT_PARAMS, theStrictLevel);
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}
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// =======================================================================
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// function : RenderGlyph
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// purpose :
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// =======================================================================
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TopoDS_Shape StdPrs_BRepFont::RenderGlyph (const Standard_Utf32Char& theChar)
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{
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TopoDS_Shape aShape;
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Standard_Mutex::Sentry aSentry (myMutex);
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renderGlyph (theChar, aShape);
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return aShape;
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}
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// =======================================================================
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// function : to3d
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// purpose :
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// =======================================================================
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bool StdPrs_BRepFont::to3d (const Handle(Geom2d_Curve)& theCurve2d,
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const GeomAbs_Shape theContinuity,
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Handle(Geom_Curve)& theCurve3d)
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{
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Standard_Real aMaxDeviation = 0.0;
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Standard_Real anAverDeviation = 0.0;
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myCurve2dAdaptor->Load (theCurve2d);
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const Handle(Adaptor2d_Curve2d)& aCurve = myCurve2dAdaptor; // to avoid ambiguity
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myCurvOnSurf.Load (aCurve);
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GeomLib::BuildCurve3d (myPrecision, myCurvOnSurf,
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myCurve2dAdaptor->FirstParameter(), myCurve2dAdaptor->LastParameter(),
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theCurve3d, aMaxDeviation, anAverDeviation, theContinuity);
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return !theCurve3d.IsNull();
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}
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// =======================================================================
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// function : buildFaces
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// purpose :
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// =======================================================================
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Standard_Boolean StdPrs_BRepFont::buildFaces (const NCollection_Sequence<TopoDS_Wire>& theWires,
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TopoDS_Shape& theRes)
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{
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#ifdef HAVE_FREETYPE
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// classify wires
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NCollection_DataMap<TopoDS_Shape, NCollection_Sequence<TopoDS_Wire>, TopTools_ShapeMapHasher> aMapOutInts;
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TopTools_DataMapOfShapeInteger aMapNbOuts;
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TopoDS_Face aF;
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myBuilder.MakeFace (aF, mySurface, myPrecision);
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Standard_Integer aWireIter1Index = 1;
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for (NCollection_Sequence<TopoDS_Wire>::Iterator aWireIter1 (theWires); aWireIter1.More(); ++aWireIter1Index, aWireIter1.Next())
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{
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const TopoDS_Wire& aW1 = aWireIter1.Value();
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if (!aMapNbOuts.IsBound (aW1))
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{
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const Standard_Integer aNbOuts = 0;
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aMapNbOuts.Bind (aW1, aNbOuts);
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}
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NCollection_Sequence<TopoDS_Wire>* anIntWs = aMapOutInts.Bound (aW1, NCollection_Sequence<TopoDS_Wire>());
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Standard_Integer aWireIter2Index = 1;
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for (NCollection_Sequence<TopoDS_Wire>::Iterator aWireIter2 (theWires); aWireIter2.More(); ++aWireIter2Index, aWireIter2.Next())
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{
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if (aWireIter1Index == aWireIter2Index)
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{
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continue;
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}
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const TopoDS_Wire& aW2 = aWireIter2.Value();
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const TopAbs_State aClass = classifyWW (aW1, aW2, aF);
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if (aClass == TopAbs_IN)
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{
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anIntWs->Append (aW2);
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if (Standard_Integer* aNbOutsPtr = aMapNbOuts.ChangeSeek (aW2))
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{
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++(*aNbOutsPtr);
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}
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else
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{
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const Standard_Integer aNbOuts = 1;
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aMapNbOuts.Bind (aW2, aNbOuts);
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}
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}
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}
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}
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// check out wires and remove "not out" wires from maps
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for (TopTools_DataMapIteratorOfDataMapOfShapeInteger anOutIter (aMapNbOuts); anOutIter.More(); anOutIter.Next())
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{
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const Standard_Integer aTmp = anOutIter.Value() % 2;
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if (aTmp > 0)
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{
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// not out wire
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aMapOutInts.UnBind (anOutIter.Key());
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}
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}
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// create faces for out wires
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TopTools_MapOfShape anUsedShapes;
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TopoDS_Compound aFaceComp;
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myBuilder.MakeCompound (aFaceComp);
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for (; !aMapOutInts.IsEmpty(); )
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{
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// find out wire with max number of outs
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TopoDS_Shape aW;
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Standard_Integer aMaxNbOuts = -1;
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for (NCollection_DataMap<TopoDS_Shape, NCollection_Sequence<TopoDS_Wire>, TopTools_ShapeMapHasher>::Iterator itMOI (aMapOutInts);
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itMOI.More(); itMOI.Next())
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{
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const TopoDS_Shape& aKey = itMOI.Key();
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const Standard_Integer aNbOuts = aMapNbOuts.Find (aKey);
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if (aNbOuts > aMaxNbOuts)
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{
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aMaxNbOuts = aNbOuts;
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aW = aKey;
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}
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}
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// create face for selected wire
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TopoDS_Face aNewF;
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myBuilder.MakeFace (aNewF, mySurface, myPrecision);
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myBuilder.Add (aNewF, aW);
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anUsedShapes.Add (aW);
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const NCollection_Sequence<TopoDS_Wire>& anIns = aMapOutInts.Find (aW);
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for (NCollection_Sequence<TopoDS_Wire>::Iterator aWireIter (anIns); aWireIter.More(); aWireIter.Next())
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{
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TopoDS_Wire aWin = aWireIter.Value();
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if (anUsedShapes.Contains (aWin))
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{
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continue;
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}
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aWin.Reverse();
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myBuilder.Add (aNewF, aWin);
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anUsedShapes.Add (aWin);
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}
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myBuilder.Add (aFaceComp, aNewF);
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aMapOutInts.UnBind (aW);
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}
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if (aFaceComp.NbChildren() == 0)
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{
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return Standard_False;
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}
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if (aFaceComp.NbChildren() == 1)
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{
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theRes = TopoDS_Iterator (aFaceComp).Value();
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}
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else
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{
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theRes = aFaceComp;
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}
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return Standard_True;
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#else
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(void )theWires;
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(void )theRes;
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return Standard_False;
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#endif
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}
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// =======================================================================
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// function : renderGlyph
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// purpose :
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// =======================================================================
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Standard_Boolean StdPrs_BRepFont::renderGlyph (const Standard_Utf32Char theChar,
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TopoDS_Shape& theShape)
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{
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theShape.Nullify();
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#ifdef HAVE_FREETYPE
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const FT_Outline* anOutline = myFTFont->renderGlyphOutline (theChar);
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if (!anOutline)
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{
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return Standard_False;
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}
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else if (myCache.Find (theChar, theShape))
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{
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return !theShape.IsNull();
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}
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if (!anOutline->n_contours)
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return Standard_False;
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TopLoc_Location aLoc;
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NCollection_Sequence<TopoDS_Wire> aWires;
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TopoDS_Compound aFaceCompDraft;
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// Get orientation is useless since it doesn't retrieve any in-font information and just computes orientation.
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// Because it fails in some cases - leave this to ShapeFix.
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//const FT_Orientation anOrient = FT_Outline_Get_Orientation (&anOutline);
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for (short aContour = 0, aStartIndex = 0; aContour < anOutline->n_contours; ++aContour)
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{
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const FT_Vector* aPntList = &anOutline->points[aStartIndex];
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const char* aTags = &anOutline->tags[aStartIndex];
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const short anEndIndex = anOutline->contours[aContour];
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const short aPntsNb = (anEndIndex - aStartIndex) + 1;
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aStartIndex = anEndIndex + 1;
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if (aPntsNb < 3 && !myFTFont->IsSingleStrokeFont())
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{
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// closed contour can not be constructed from < 3 points
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continue;
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}
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BRepBuilderAPI_MakeWire aWireMaker;
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gp_XY aPntPrev;
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gp_XY aPntCurr = readFTVec (aPntList[aPntsNb - 1], myScaleUnits, myFTFont->WidthScaling());
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gp_XY aPntNext = readFTVec (aPntList[0], myScaleUnits, myFTFont->WidthScaling());
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bool isLineSeg = !myFTFont->IsSingleStrokeFont()
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&& FT_CURVE_TAG(aTags[aPntsNb - 1]) == FT_Curve_Tag_On;
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gp_XY aPntLine1 = aPntCurr;
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// see http://freetype.sourceforge.net/freetype2/docs/glyphs/glyphs-6.html
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// for a full description of FreeType tags.
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for (short aPntId = 0; aPntId < aPntsNb; ++aPntId)
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{
|
|
aPntPrev = aPntCurr;
|
|
aPntCurr = aPntNext;
|
|
aPntNext = readFTVec (aPntList[(aPntId + 1) % aPntsNb], myScaleUnits, myFTFont->WidthScaling());
|
|
|
|
// process tags
|
|
if (FT_CURVE_TAG(aTags[aPntId]) == FT_Curve_Tag_On)
|
|
{
|
|
if (!isLineSeg)
|
|
{
|
|
aPntLine1 = aPntCurr;
|
|
isLineSeg = true;
|
|
continue;
|
|
}
|
|
|
|
const gp_XY aDirVec = aPntCurr - aPntLine1;
|
|
const Standard_Real aLen = aDirVec.Modulus();
|
|
if (aLen <= myPrecision)
|
|
{
|
|
aPntLine1 = aPntCurr;
|
|
isLineSeg = true;
|
|
continue;
|
|
}
|
|
|
|
if (myIsCompositeCurve)
|
|
{
|
|
Handle(Geom2d_TrimmedCurve) aLine = GCE2d_MakeSegment (gp_Pnt2d (aPntLine1), gp_Pnt2d (aPntCurr));
|
|
myConcatMaker.Add (aLine, myPrecision);
|
|
}
|
|
else
|
|
{
|
|
Handle(Geom_Curve) aCurve3d;
|
|
Handle(Geom2d_Line) aCurve2d = new Geom2d_Line (gp_Pnt2d (aPntLine1), gp_Dir2d (aDirVec));
|
|
if (to3d (aCurve2d, GeomAbs_C1, aCurve3d))
|
|
{
|
|
TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d, 0.0, aLen);
|
|
myBuilder.UpdateEdge (anEdge, aCurve2d, mySurface, aLoc, myPrecision);
|
|
aWireMaker.Add (anEdge);
|
|
}
|
|
}
|
|
aPntLine1 = aPntCurr;
|
|
}
|
|
else if (FT_CURVE_TAG(aTags[aPntId]) == FT_Curve_Tag_Conic)
|
|
{
|
|
isLineSeg = false;
|
|
gp_XY aPntPrev2 = aPntPrev;
|
|
gp_XY aPntNext2 = aPntNext;
|
|
|
|
// previous point is either the real previous point (an "on" point),
|
|
// or the midpoint between the current one and the previous "conic off" point
|
|
if (FT_CURVE_TAG(aTags[(aPntId - 1 + aPntsNb) % aPntsNb]) == FT_Curve_Tag_Conic)
|
|
{
|
|
aPntPrev2 = (aPntCurr + aPntPrev) * 0.5;
|
|
}
|
|
|
|
// next point is either the real next point or the midpoint
|
|
if (FT_CURVE_TAG(aTags[(aPntId + 1) % aPntsNb]) == FT_Curve_Tag_Conic)
|
|
{
|
|
aPntNext2 = (aPntCurr + aPntNext) * 0.5;
|
|
}
|
|
|
|
my3Poles.SetValue (1, aPntPrev2);
|
|
my3Poles.SetValue (2, aPntCurr);
|
|
my3Poles.SetValue (3, aPntNext2);
|
|
Handle(Geom2d_BezierCurve) aBezierArc = new Geom2d_BezierCurve (my3Poles);
|
|
if (myIsCompositeCurve)
|
|
{
|
|
myConcatMaker.Add (aBezierArc, myPrecision);
|
|
}
|
|
else
|
|
{
|
|
Handle(Geom_Curve) aCurve3d;
|
|
if (to3d (aBezierArc, GeomAbs_C1, aCurve3d))
|
|
{
|
|
TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d);
|
|
myBuilder.UpdateEdge (anEdge, aBezierArc, mySurface, aLoc, myPrecision);
|
|
aWireMaker.Add (anEdge);
|
|
}
|
|
}
|
|
}
|
|
else if (FT_CURVE_TAG(aTags[aPntId]) == FT_Curve_Tag_Cubic
|
|
&& FT_CURVE_TAG(aTags[(aPntId + 1) % aPntsNb]) == FT_Curve_Tag_Cubic)
|
|
{
|
|
isLineSeg = false;
|
|
my4Poles.SetValue (1, aPntPrev);
|
|
my4Poles.SetValue (2, aPntCurr);
|
|
my4Poles.SetValue (3, aPntNext);
|
|
my4Poles.SetValue (4, gp_Pnt2d(readFTVec (aPntList[(aPntId + 2) % aPntsNb], myScaleUnits, myFTFont->WidthScaling())));
|
|
Handle(Geom2d_BezierCurve) aBezier = new Geom2d_BezierCurve (my4Poles);
|
|
if (myIsCompositeCurve)
|
|
{
|
|
myConcatMaker.Add (aBezier, myPrecision);
|
|
}
|
|
else
|
|
{
|
|
Handle(Geom_Curve) aCurve3d;
|
|
if (to3d (aBezier, GeomAbs_C1, aCurve3d))
|
|
{
|
|
TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d);
|
|
myBuilder.UpdateEdge (anEdge, aBezier, mySurface, aLoc, myPrecision);
|
|
aWireMaker.Add (anEdge);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (myIsCompositeCurve)
|
|
{
|
|
Handle(Geom2d_BSplineCurve) aDraft2d = myConcatMaker.BSplineCurve();
|
|
if (aDraft2d.IsNull())
|
|
{
|
|
continue;
|
|
}
|
|
|
|
const gp_Pnt2d aFirstPnt = aDraft2d->StartPoint();
|
|
const gp_Pnt2d aLastPnt = aDraft2d->EndPoint();
|
|
if (!myFTFont->IsSingleStrokeFont()
|
|
&& !aFirstPnt.IsEqual (aLastPnt, myPrecision))
|
|
{
|
|
Handle(Geom2d_TrimmedCurve) aLine = GCE2d_MakeSegment (aLastPnt, aFirstPnt);
|
|
myConcatMaker.Add (aLine, myPrecision);
|
|
}
|
|
|
|
Handle(Geom2d_BSplineCurve) aCurve2d = myConcatMaker.BSplineCurve();
|
|
Handle(Geom_Curve) aCurve3d;
|
|
if (to3d (aCurve2d, GeomAbs_C0, aCurve3d))
|
|
{
|
|
TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d);
|
|
myBuilder.UpdateEdge (anEdge, aCurve2d, mySurface, aLoc, myPrecision);
|
|
aWireMaker.Add (anEdge);
|
|
}
|
|
myConcatMaker.Clear();
|
|
}
|
|
else
|
|
{
|
|
if (!aWireMaker.IsDone())
|
|
{
|
|
continue;
|
|
}
|
|
|
|
TopoDS_Vertex aFirstV, aLastV;
|
|
TopExp::Vertices (aWireMaker.Wire(), aFirstV, aLastV);
|
|
gp_Pnt aFirstPoint = BRep_Tool::Pnt (aFirstV);
|
|
gp_Pnt aLastPoint = BRep_Tool::Pnt (aLastV);
|
|
if (!myFTFont->IsSingleStrokeFont()
|
|
&& !aFirstPoint.IsEqual (aLastPoint, myPrecision))
|
|
{
|
|
aWireMaker.Add (BRepLib_MakeEdge (aFirstV, aLastV));
|
|
}
|
|
}
|
|
|
|
if (!aWireMaker.IsDone())
|
|
{
|
|
continue;
|
|
}
|
|
|
|
TopoDS_Wire aWireDraft = aWireMaker.Wire();
|
|
if (!myFTFont->IsSingleStrokeFont())
|
|
{
|
|
// collect all wires and set CCW orientation
|
|
TopoDS_Face aFace;
|
|
myBuilder.MakeFace (aFace, mySurface, myPrecision);
|
|
myBuilder.Add (aFace, aWireDraft);
|
|
BRepTopAdaptor_FClass2d aClass2d (aFace, ::Precision::PConfusion());
|
|
TopAbs_State aState = aClass2d.PerformInfinitePoint();
|
|
if (aState != TopAbs_OUT)
|
|
{
|
|
// need to reverse
|
|
aWireDraft.Reverse();
|
|
}
|
|
aWires.Append (aWireDraft);
|
|
}
|
|
else
|
|
{
|
|
if (aFaceCompDraft.IsNull())
|
|
{
|
|
myBuilder.MakeCompound (aFaceCompDraft);
|
|
}
|
|
myBuilder.Add (aFaceCompDraft, aWireDraft);
|
|
}
|
|
}
|
|
|
|
if (!aWires.IsEmpty())
|
|
{
|
|
buildFaces (aWires, theShape);
|
|
}
|
|
else if (!aFaceCompDraft.IsNull())
|
|
{
|
|
theShape = aFaceCompDraft;
|
|
}
|
|
#else
|
|
(void )theChar;
|
|
#endif
|
|
myCache.Bind (theChar, theShape);
|
|
return !theShape.IsNull();
|
|
}
|