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1 | // Created on: 2013-09-16 |
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2 | // Copyright (c) 2013-2014 OPEN CASCADE SAS |
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3 | // |
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4 | // This file is part of Open CASCADE Technology software library. |
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5 | // |
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6 | // This library is free software; you can redistribute it and/or modify it under |
7 | // the terms of the GNU Lesser General Public License version 2.1 as published |
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8 | // by the Free Software Foundation, with special exception defined in the file |
9 | // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT |
10 | // distribution for complete text of the license and disclaimer of any warranty. |
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11 | // |
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12 | // Alternatively, this file may be used under the terms of Open CASCADE |
13 | // commercial license or contractual agreement. |
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14 | |
15 | #include <Font_BRepFont.hxx> |
16 | |
17 | #include <BRep_Tool.hxx> |
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18 | #include <BRepTopAdaptor_FClass2d.hxx> |
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19 | #include <BRepBuilderAPI_MakeFace.hxx> |
20 | #include <BRepBuilderAPI_MakeWire.hxx> |
21 | #include <BRepLib_MakeEdge.hxx> |
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22 | #include <Font_FTLibrary.hxx> |
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23 | #include <Font_TextFormatter.hxx> |
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24 | #include <GCE2d_MakeSegment.hxx> |
25 | #include <GC_MakeSegment.hxx> |
26 | #include <Geom_BezierCurve.hxx> |
27 | #include <Geom_BSplineCurve.hxx> |
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28 | #include <Geom2d_TrimmedCurve.hxx> |
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29 | #include <Geom_Plane.hxx> |
30 | #include <Geom2d_BezierCurve.hxx> |
31 | #include <Geom2d_BSplineCurve.hxx> |
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32 | #include <Geom2d_TrimmedCurve.hxx> |
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33 | #include <Geom2d_Line.hxx> |
34 | #include <GeomAPI.hxx> |
35 | #include <GeomAdaptor_HSurface.hxx> |
36 | #include <GeomLib.hxx> |
37 | #include <gp_Pln.hxx> |
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38 | #include <TColGeom2d_HSequenceOfBoundedCurve.hxx> |
39 | #include <TCollection_AsciiString.hxx> |
40 | #include <TCollection_HAsciiString.hxx> |
41 | #include <TopExp.hxx> |
42 | #include <TopExp_Explorer.hxx> |
43 | #include <TopoDS.hxx> |
44 | #include <TopoDS_Compound.hxx> |
45 | #include <TopoDS_Vertex.hxx> |
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46 | #include <TopTools_DataMapOfShapeInteger.hxx> |
47 | #include <TopTools_DataMapOfShapeSequenceOfShape.hxx> |
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48 | |
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49 | #include <ft2build.h> |
50 | #include FT_FREETYPE_H |
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51 | #include FT_OUTLINE_H |
52 | |
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53 | IMPLEMENT_STANDARD_RTTIEXT(Font_BRepFont,Font_FTFont) |
54 | |
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55 | namespace |
56 | { |
57 | // pre-defined font rendering options |
58 | static const unsigned int THE_FONT_SIZE = 72; |
59 | static const unsigned int THE_RESOLUTION_DPI = 4800; |
60 | |
61 | // compute scaling factor for specified font size |
62 | inline Standard_Real getScale (const Standard_Real theSize) |
63 | { |
64 | return theSize / Standard_Real(THE_FONT_SIZE) * 72.0 / Standard_Real(THE_RESOLUTION_DPI); |
65 | } |
66 | |
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67 | //! Auxiliary method to convert FT_Vector to gp_XY |
68 | static gp_XY readFTVec (const FT_Vector& theVec, |
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69 | const Standard_Real theScaleUnits, |
70 | const Standard_Real theWidthScaling = 1.0) |
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71 | { |
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72 | return gp_XY (theScaleUnits * Standard_Real(theVec.x) * theWidthScaling / 64.0, theScaleUnits * Standard_Real(theVec.y) / 64.0); |
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73 | } |
74 | |
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75 | //! Auxiliary method for classification wire theW2 with respect to wire theW1 |
76 | static TopAbs_State classifyWW (const TopoDS_Wire& theW1, |
77 | const TopoDS_Wire& theW2, |
78 | const TopoDS_Face& theF) |
79 | { |
80 | TopAbs_State aRes = TopAbs_UNKNOWN; |
81 | |
82 | TopoDS_Face aF = TopoDS::Face (theF.EmptyCopied()); |
83 | aF.Orientation (TopAbs_FORWARD); |
84 | BRep_Builder aB; |
85 | aB.Add (aF, theW1); |
86 | BRepTopAdaptor_FClass2d aClass2d (aF, ::Precision::PConfusion()); |
87 | for (TopoDS_Iterator anEdgeIter (theW2); anEdgeIter.More(); anEdgeIter.Next()) |
88 | { |
89 | const TopoDS_Edge& anEdge = TopoDS::Edge (anEdgeIter.Value()); |
90 | Standard_Real aPFirst = 0.0, aPLast = 0.0; |
91 | Handle(Geom2d_Curve) aCurve2d = BRep_Tool::CurveOnSurface (anEdge, theF, aPFirst, aPLast); |
92 | if (aCurve2d.IsNull()) |
93 | { |
94 | continue; |
95 | } |
96 | |
97 | gp_Pnt2d aPnt2d = aCurve2d->Value ((aPFirst + aPLast) / 2.0); |
98 | TopAbs_State aState = aClass2d.Perform (aPnt2d, Standard_False); |
99 | if (aState == TopAbs_OUT |
100 | || aState == TopAbs_IN) |
101 | { |
102 | if (aRes == TopAbs_UNKNOWN) |
103 | { |
104 | aRes = aState; |
105 | } |
106 | else if (aRes != aState) |
107 | { |
108 | return TopAbs_UNKNOWN; |
109 | } |
110 | } |
111 | } |
112 | return aRes; |
113 | } |
114 | |
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115 | } |
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116 | |
117 | // ======================================================================= |
118 | // function : Constructor |
119 | // purpose : |
120 | // ======================================================================= |
121 | Font_BRepFont::Font_BRepFont () |
122 | : myPrecision (Precision::Confusion()), |
123 | myScaleUnits (1.0), |
124 | myIsCompositeCurve (Standard_False), |
125 | my3Poles (1, 3), |
126 | my4Poles (1, 4) |
127 | { |
128 | init(); |
129 | } |
130 | |
131 | // ======================================================================= |
132 | // function : init |
133 | // purpose : |
134 | // ======================================================================= |
135 | void Font_BRepFont::init() |
136 | { |
137 | mySurface = new Geom_Plane (gp_Pln (gp::XOY())); |
138 | myCurve2dAdaptor = new Geom2dAdaptor_HCurve(); |
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139 | Handle(Adaptor3d_HSurface) aSurfAdaptor = new GeomAdaptor_HSurface (mySurface); |
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140 | myCurvOnSurf.Load (aSurfAdaptor); |
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141 | } |
142 | |
143 | // ======================================================================= |
144 | // function : Constructor |
145 | // purpose : |
146 | // ======================================================================= |
147 | Font_BRepFont::Font_BRepFont (const NCollection_String& theFontPath, |
148 | const Standard_Real theSize) |
149 | : myPrecision (Precision::Confusion()), |
150 | myScaleUnits (1.0), |
151 | myIsCompositeCurve (Standard_False), |
152 | my3Poles (1, 3), |
153 | my4Poles (1, 4) |
154 | { |
155 | init(); |
156 | if (theSize <= myPrecision * 100.0) |
157 | { |
158 | return; |
159 | } |
160 | |
161 | myScaleUnits = getScale (theSize); |
162 | Font_FTFont::Init (theFontPath, THE_FONT_SIZE, THE_RESOLUTION_DPI); |
163 | } |
164 | |
165 | // ======================================================================= |
166 | // function : Constructor |
167 | // purpose : |
168 | // ======================================================================= |
169 | Font_BRepFont::Font_BRepFont (const NCollection_String& theFontName, |
170 | const Font_FontAspect theFontAspect, |
171 | const Standard_Real theSize) |
172 | : myPrecision (Precision::Confusion()), |
173 | myScaleUnits (1.0), |
174 | myIsCompositeCurve (Standard_False), |
175 | my3Poles (1, 3), |
176 | my4Poles (1, 4) |
177 | { |
178 | init(); |
179 | if (theSize <= myPrecision * 100.0) |
180 | { |
181 | return; |
182 | } |
183 | |
184 | myScaleUnits = getScale (theSize); |
185 | Font_FTFont::Init (theFontName, theFontAspect, THE_FONT_SIZE, THE_RESOLUTION_DPI); |
186 | } |
187 | |
188 | // ======================================================================= |
189 | // function : Release |
190 | // purpose : |
191 | // ======================================================================= |
192 | void Font_BRepFont::Release() |
193 | { |
194 | myCache.Clear(); |
195 | Font_FTFont::Release(); |
196 | } |
197 | |
198 | // ======================================================================= |
199 | // function : SetCompositeCurveMode |
200 | // purpose : |
201 | // ======================================================================= |
202 | void Font_BRepFont::SetCompositeCurveMode (const Standard_Boolean theToConcatenate) |
203 | { |
204 | if (myIsCompositeCurve != theToConcatenate) |
205 | { |
206 | myIsCompositeCurve = theToConcatenate; |
207 | myCache.Clear(); |
208 | } |
209 | } |
210 | |
211 | // ======================================================================= |
212 | // function : Init |
213 | // purpose : |
214 | // ======================================================================= |
215 | bool Font_BRepFont::Init (const NCollection_String& theFontPath, |
216 | const Standard_Real theSize) |
217 | { |
218 | if (theSize <= myPrecision * 100.0) |
219 | { |
220 | return false; |
221 | } |
222 | |
223 | myScaleUnits = getScale (theSize); |
224 | return Font_FTFont::Init (theFontPath, THE_FONT_SIZE, THE_RESOLUTION_DPI); |
225 | } |
226 | |
227 | // ======================================================================= |
228 | // function : Init |
229 | // purpose : |
230 | // ======================================================================= |
231 | bool Font_BRepFont::Init (const NCollection_String& theFontName, |
232 | const Font_FontAspect theFontAspect, |
233 | const Standard_Real theSize) |
234 | { |
235 | if (theSize <= myPrecision * 100.0) |
236 | { |
237 | return false; |
238 | } |
239 | |
240 | myScaleUnits = getScale (theSize); |
241 | return Font_FTFont::Init (theFontName, theFontAspect, THE_FONT_SIZE, THE_RESOLUTION_DPI); |
242 | } |
243 | |
244 | // ======================================================================= |
245 | // function : RenderGlyph |
246 | // purpose : |
247 | // ======================================================================= |
248 | TopoDS_Shape Font_BRepFont::RenderGlyph (const Standard_Utf32Char& theChar) |
249 | { |
250 | TopoDS_Shape aShape; |
251 | Standard_Mutex::Sentry aSentry (myMutex); |
252 | renderGlyph (theChar, aShape); |
253 | return aShape; |
254 | } |
255 | |
256 | // ======================================================================= |
257 | // function : to3d |
258 | // purpose : |
259 | // ======================================================================= |
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260 | bool Font_BRepFont::to3d (const Handle(Geom2d_Curve)& theCurve2d, |
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261 | const GeomAbs_Shape theContinuity, |
262 | Handle(Geom_Curve)& theCurve3d) |
263 | { |
264 | Standard_Real aMaxDeviation = 0.0; |
265 | Standard_Real anAverDeviation = 0.0; |
266 | myCurve2dAdaptor->ChangeCurve2d().Load (theCurve2d); |
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267 | const Handle(Adaptor2d_HCurve2d)& aCurve = myCurve2dAdaptor; // to avoid ambiguity |
268 | myCurvOnSurf.Load (aCurve); |
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269 | GeomLib::BuildCurve3d (myPrecision, myCurvOnSurf, |
270 | myCurve2dAdaptor->FirstParameter(), myCurve2dAdaptor->LastParameter(), |
271 | theCurve3d, aMaxDeviation, anAverDeviation, theContinuity); |
272 | return !theCurve3d.IsNull(); |
273 | } |
274 | |
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275 | |
276 | // ======================================================================= |
277 | // function : buildFaces |
278 | // purpose : |
279 | // ======================================================================= |
280 | Standard_Boolean Font_BRepFont::buildFaces (const NCollection_Sequence<TopoDS_Wire>& theWires, |
281 | TopoDS_Shape& theRes) |
282 | { |
283 | // classify wires |
284 | NCollection_DataMap<TopoDS_Shape, NCollection_Sequence<TopoDS_Wire>, TopTools_ShapeMapHasher> aMapOutInts; |
285 | TopTools_DataMapOfShapeInteger aMapNbOuts; |
286 | TopoDS_Face aF; |
287 | myBuilder.MakeFace (aF, mySurface, myPrecision); |
288 | Standard_Integer aWireIter1Index = 1; |
289 | for (NCollection_Sequence<TopoDS_Wire>::Iterator aWireIter1 (theWires); aWireIter1.More(); ++aWireIter1Index, aWireIter1.Next()) |
290 | { |
291 | const TopoDS_Wire& aW1 = aWireIter1.Value(); |
292 | if (!aMapNbOuts.IsBound (aW1)) |
293 | { |
294 | const Standard_Integer aNbOuts = 0; |
295 | aMapNbOuts.Bind (aW1, aNbOuts); |
296 | } |
297 | |
298 | NCollection_Sequence<TopoDS_Wire>* anIntWs = aMapOutInts.Bound (aW1, NCollection_Sequence<TopoDS_Wire>()); |
299 | Standard_Integer aWireIter2Index = 1; |
300 | for (NCollection_Sequence<TopoDS_Wire>::Iterator aWireIter2 (theWires); aWireIter2.More(); ++aWireIter2Index, aWireIter2.Next()) |
301 | { |
302 | if (aWireIter1Index == aWireIter2Index) |
303 | { |
304 | continue; |
305 | } |
306 | |
307 | const TopoDS_Wire& aW2 = aWireIter2.Value(); |
308 | const TopAbs_State aClass = classifyWW (aW1, aW2, aF); |
309 | if (aClass == TopAbs_IN) |
310 | { |
311 | anIntWs->Append (aW2); |
312 | if (Standard_Integer* aNbOutsPtr = aMapNbOuts.ChangeSeek (aW2)) |
313 | { |
314 | ++(*aNbOutsPtr); |
315 | } |
316 | else |
317 | { |
318 | const Standard_Integer aNbOuts = 1; |
319 | aMapNbOuts.Bind (aW2, aNbOuts); |
320 | } |
321 | } |
322 | } |
323 | } |
324 | |
325 | // check out wires and remove "not out" wires from maps |
326 | for (TopTools_DataMapIteratorOfDataMapOfShapeInteger anOutIter (aMapNbOuts); anOutIter.More(); anOutIter.Next()) |
327 | { |
328 | const Standard_Integer aTmp = anOutIter.Value() % 2; |
329 | if (aTmp > 0) |
330 | { |
331 | // not out wire |
332 | aMapOutInts.UnBind (anOutIter.Key()); |
333 | } |
334 | } |
335 | |
336 | // create faces for out wires |
337 | TopTools_MapOfShape anUsedShapes; |
338 | TopoDS_Compound aFaceComp; |
339 | myBuilder.MakeCompound (aFaceComp); |
340 | for (; !aMapOutInts.IsEmpty(); ) |
341 | { |
342 | // find out wire with max number of outs |
343 | TopoDS_Shape aW; |
344 | Standard_Integer aMaxNbOuts = -1; |
345 | for (NCollection_DataMap<TopoDS_Shape, NCollection_Sequence<TopoDS_Wire>, TopTools_ShapeMapHasher>::Iterator itMOI (aMapOutInts); |
346 | itMOI.More(); itMOI.Next()) |
347 | { |
348 | const TopoDS_Shape& aKey = itMOI.Key(); |
349 | const Standard_Integer aNbOuts = aMapNbOuts.Find (aKey); |
350 | if (aNbOuts > aMaxNbOuts) |
351 | { |
352 | aMaxNbOuts = aNbOuts; |
353 | aW = aKey; |
354 | } |
355 | } |
356 | |
357 | // create face for selected wire |
358 | TopoDS_Face aNewF; |
359 | myBuilder.MakeFace (aNewF, mySurface, myPrecision); |
360 | myBuilder.Add (aNewF, aW); |
361 | anUsedShapes.Add (aW); |
362 | const NCollection_Sequence<TopoDS_Wire>& anIns = aMapOutInts.Find (aW); |
363 | for (NCollection_Sequence<TopoDS_Wire>::Iterator aWireIter (anIns); aWireIter.More(); aWireIter.Next()) |
364 | { |
365 | TopoDS_Wire aWin = aWireIter.Value(); |
366 | if (anUsedShapes.Contains (aWin)) |
367 | { |
368 | continue; |
369 | } |
370 | |
371 | aWin.Reverse(); |
372 | myBuilder.Add (aNewF, aWin); |
373 | anUsedShapes.Add (aWin); |
374 | } |
375 | |
376 | myBuilder.Add (aFaceComp, aNewF); |
377 | aMapOutInts.UnBind (aW); |
378 | } |
379 | |
380 | if (aFaceComp.NbChildren() == 0) |
381 | { |
382 | return Standard_False; |
383 | } |
384 | |
385 | if (aFaceComp.NbChildren() == 1) |
386 | { |
387 | theRes = TopoDS_Iterator (aFaceComp).Value(); |
388 | } |
389 | else |
390 | { |
391 | theRes = aFaceComp; |
392 | } |
393 | return Standard_True; |
394 | } |
395 | |
396 | |
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397 | // ======================================================================= |
398 | // function : renderGlyph |
399 | // purpose : |
400 | // ======================================================================= |
401 | Standard_Boolean Font_BRepFont::renderGlyph (const Standard_Utf32Char theChar, |
402 | TopoDS_Shape& theShape) |
403 | { |
404 | theShape.Nullify(); |
405 | if (!loadGlyph (theChar) |
406 | || myFTFace->glyph->format != FT_GLYPH_FORMAT_OUTLINE) |
407 | { |
408 | return Standard_False; |
409 | } |
410 | else if (myCache.Find (theChar, theShape)) |
411 | { |
412 | return !theShape.IsNull(); |
413 | } |
414 | |
be7d4aa2 |
415 | FT_Outline& anOutline = myFTFace->glyph->outline; |
416 | |
417 | if (!anOutline.n_contours) |
418 | return Standard_False; |
419 | |
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420 | TopLoc_Location aLoc; |
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421 | NCollection_Sequence<TopoDS_Wire> aWires; |
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422 | TopoDS_Compound aFaceCompDraft; |
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423 | |
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424 | // Get orientation is useless since it doesn't retrieve any in-font information and just computes orientation. |
425 | // Because it fails in some cases - leave this to ShapeFix. |
426 | //const FT_Orientation anOrient = FT_Outline_Get_Orientation (&anOutline); |
427 | for (short aContour = 0, aStartIndex = 0; aContour < anOutline.n_contours; ++aContour) |
428 | { |
429 | const FT_Vector* aPntList = &anOutline.points[aStartIndex]; |
430 | const char* aTags = &anOutline.tags[aStartIndex]; |
431 | const short anEndIndex = anOutline.contours[aContour]; |
432 | const short aPntsNb = (anEndIndex - aStartIndex) + 1; |
433 | aStartIndex = anEndIndex + 1; |
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434 | if (aPntsNb < 3 && !myIsSingleLine) |
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435 | { |
436 | // closed contour can not be constructed from < 3 points |
437 | continue; |
438 | } |
439 | |
440 | BRepBuilderAPI_MakeWire aWireMaker; |
441 | |
442 | gp_XY aPntPrev; |
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443 | gp_XY aPntCurr = readFTVec (aPntList[aPntsNb - 1], myScaleUnits, myWidthScaling); |
444 | gp_XY aPntNext = readFTVec (aPntList[0], myScaleUnits, myWidthScaling); |
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445 | |
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446 | bool isLineSeg = !myIsSingleLine |
447 | && FT_CURVE_TAG(aTags[aPntsNb - 1]) == FT_Curve_Tag_On; |
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448 | gp_XY aPntLine1 = aPntCurr; |
449 | |
450 | // see http://freetype.sourceforge.net/freetype2/docs/glyphs/glyphs-6.html |
451 | // for a full description of FreeType tags. |
452 | for (short aPntId = 0; aPntId < aPntsNb; ++aPntId) |
453 | { |
454 | aPntPrev = aPntCurr; |
455 | aPntCurr = aPntNext; |
151da08b |
456 | aPntNext = readFTVec (aPntList[(aPntId + 1) % aPntsNb], myScaleUnits, myWidthScaling); |
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457 | |
458 | // process tags |
459 | if (FT_CURVE_TAG(aTags[aPntId]) == FT_Curve_Tag_On) |
460 | { |
e4f0cc46 |
461 | if (!isLineSeg) |
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462 | { |
463 | aPntLine1 = aPntCurr; |
e4f0cc46 |
464 | isLineSeg = true; |
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465 | continue; |
466 | } |
467 | |
468 | const gp_XY aDirVec = aPntCurr - aPntLine1; |
469 | const Standard_Real aLen = aDirVec.Modulus(); |
470 | if (aLen <= myPrecision) |
471 | { |
472 | aPntLine1 = aPntCurr; |
e4f0cc46 |
473 | isLineSeg = true; |
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474 | continue; |
475 | } |
476 | |
477 | if (myIsCompositeCurve) |
478 | { |
479 | Handle(Geom2d_TrimmedCurve) aLine = GCE2d_MakeSegment (gp_Pnt2d (aPntLine1), gp_Pnt2d (aPntCurr)); |
480 | myConcatMaker.Add (aLine, myPrecision); |
481 | } |
482 | else |
483 | { |
484 | Handle(Geom_Curve) aCurve3d; |
485 | Handle(Geom2d_Line) aCurve2d = new Geom2d_Line (gp_Pnt2d (aPntLine1), gp_Dir2d (aDirVec)); |
486 | if (to3d (aCurve2d, GeomAbs_C1, aCurve3d)) |
487 | { |
488 | TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d, 0.0, aLen); |
489 | myBuilder.UpdateEdge (anEdge, aCurve2d, mySurface, aLoc, myPrecision); |
490 | aWireMaker.Add (anEdge); |
491 | } |
492 | } |
493 | aPntLine1 = aPntCurr; |
494 | } |
495 | else if (FT_CURVE_TAG(aTags[aPntId]) == FT_Curve_Tag_Conic) |
496 | { |
e4f0cc46 |
497 | isLineSeg = false; |
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498 | gp_XY aPntPrev2 = aPntPrev; |
499 | gp_XY aPntNext2 = aPntNext; |
500 | |
501 | // previous point is either the real previous point (an "on" point), |
502 | // or the midpoint between the current one and the previous "conic off" point |
503 | if (FT_CURVE_TAG(aTags[(aPntId - 1 + aPntsNb) % aPntsNb]) == FT_Curve_Tag_Conic) |
504 | { |
505 | aPntPrev2 = (aPntCurr + aPntPrev) * 0.5; |
506 | } |
507 | |
508 | // next point is either the real next point or the midpoint |
509 | if (FT_CURVE_TAG(aTags[(aPntId + 1) % aPntsNb]) == FT_Curve_Tag_Conic) |
510 | { |
511 | aPntNext2 = (aPntCurr + aPntNext) * 0.5; |
512 | } |
513 | |
514 | my3Poles.SetValue (1, aPntPrev2); |
515 | my3Poles.SetValue (2, aPntCurr); |
516 | my3Poles.SetValue (3, aPntNext2); |
517 | Handle(Geom2d_BezierCurve) aBezierArc = new Geom2d_BezierCurve (my3Poles); |
518 | if (myIsCompositeCurve) |
519 | { |
520 | myConcatMaker.Add (aBezierArc, myPrecision); |
521 | } |
522 | else |
523 | { |
524 | Handle(Geom_Curve) aCurve3d; |
525 | if (to3d (aBezierArc, GeomAbs_C1, aCurve3d)) |
526 | { |
527 | TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d); |
528 | myBuilder.UpdateEdge (anEdge, aBezierArc, mySurface, aLoc, myPrecision); |
529 | aWireMaker.Add (anEdge); |
530 | } |
531 | } |
532 | } |
533 | else if (FT_CURVE_TAG(aTags[aPntId]) == FT_Curve_Tag_Cubic |
534 | && FT_CURVE_TAG(aTags[(aPntId + 1) % aPntsNb]) == FT_Curve_Tag_Cubic) |
535 | { |
e4f0cc46 |
536 | isLineSeg = false; |
b514beda |
537 | my4Poles.SetValue (1, aPntPrev); |
538 | my4Poles.SetValue (2, aPntCurr); |
539 | my4Poles.SetValue (3, aPntNext); |
151da08b |
540 | my4Poles.SetValue (4, gp_Pnt2d(readFTVec (aPntList[(aPntId + 2) % aPntsNb], myScaleUnits, myWidthScaling))); |
b514beda |
541 | Handle(Geom2d_BezierCurve) aBezier = new Geom2d_BezierCurve (my4Poles); |
542 | if (myIsCompositeCurve) |
543 | { |
544 | myConcatMaker.Add (aBezier, myPrecision); |
545 | } |
546 | else |
547 | { |
548 | Handle(Geom_Curve) aCurve3d; |
549 | if (to3d (aBezier, GeomAbs_C1, aCurve3d)) |
550 | { |
551 | TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d); |
552 | myBuilder.UpdateEdge (anEdge, aBezier, mySurface, aLoc, myPrecision); |
553 | aWireMaker.Add (anEdge); |
554 | } |
555 | } |
556 | } |
557 | } |
558 | |
559 | if (myIsCompositeCurve) |
560 | { |
561 | Handle(Geom2d_BSplineCurve) aDraft2d = myConcatMaker.BSplineCurve(); |
562 | if (aDraft2d.IsNull()) |
563 | { |
564 | continue; |
565 | } |
566 | |
567 | const gp_Pnt2d aFirstPnt = aDraft2d->StartPoint(); |
568 | const gp_Pnt2d aLastPnt = aDraft2d->EndPoint(); |
e4f0cc46 |
569 | if (!myIsSingleLine |
570 | && !aFirstPnt.IsEqual (aLastPnt, myPrecision)) |
b514beda |
571 | { |
572 | Handle(Geom2d_TrimmedCurve) aLine = GCE2d_MakeSegment (aLastPnt, aFirstPnt); |
573 | myConcatMaker.Add (aLine, myPrecision); |
574 | } |
575 | |
576 | Handle(Geom2d_BSplineCurve) aCurve2d = myConcatMaker.BSplineCurve(); |
577 | Handle(Geom_Curve) aCurve3d; |
578 | if (to3d (aCurve2d, GeomAbs_C0, aCurve3d)) |
579 | { |
580 | TopoDS_Edge anEdge = BRepLib_MakeEdge (aCurve3d); |
581 | myBuilder.UpdateEdge (anEdge, aCurve2d, mySurface, aLoc, myPrecision); |
582 | aWireMaker.Add (anEdge); |
583 | } |
584 | myConcatMaker.Clear(); |
585 | } |
586 | else |
587 | { |
588 | if (!aWireMaker.IsDone()) |
589 | { |
590 | continue; |
591 | } |
592 | |
593 | TopoDS_Vertex aFirstV, aLastV; |
594 | TopExp::Vertices (aWireMaker.Wire(), aFirstV, aLastV); |
595 | gp_Pnt aFirstPoint = BRep_Tool::Pnt (aFirstV); |
596 | gp_Pnt aLastPoint = BRep_Tool::Pnt (aLastV); |
e4f0cc46 |
597 | if (!myIsSingleLine |
598 | && !aFirstPoint.IsEqual (aLastPoint, myPrecision)) |
b514beda |
599 | { |
600 | aWireMaker.Add (BRepLib_MakeEdge (aFirstV, aLastV)); |
601 | } |
602 | } |
603 | |
604 | if (!aWireMaker.IsDone()) |
605 | { |
606 | continue; |
607 | } |
608 | |
609 | TopoDS_Wire aWireDraft = aWireMaker.Wire(); |
e4f0cc46 |
610 | if (!myIsSingleLine) |
611 | { |
3388cf17 |
612 | // collect all wires and set CCW orientation |
613 | TopoDS_Face aFace; |
614 | myBuilder.MakeFace (aFace, mySurface, myPrecision); |
615 | myBuilder.Add (aFace, aWireDraft); |
616 | BRepTopAdaptor_FClass2d aClass2d (aFace, ::Precision::PConfusion()); |
617 | TopAbs_State aState = aClass2d.PerformInfinitePoint(); |
618 | if (aState != TopAbs_OUT) |
e4f0cc46 |
619 | { |
3388cf17 |
620 | // need to reverse |
621 | aWireDraft.Reverse(); |
e4f0cc46 |
622 | } |
3388cf17 |
623 | aWires.Append (aWireDraft); |
e4f0cc46 |
624 | } |
625 | else |
626 | { |
627 | if (aFaceCompDraft.IsNull()) |
628 | { |
629 | myBuilder.MakeCompound (aFaceCompDraft); |
630 | } |
631 | myBuilder.Add (aFaceCompDraft, aWireDraft); |
632 | } |
b514beda |
633 | } |
634 | |
3388cf17 |
635 | if (!aWires.IsEmpty()) |
b514beda |
636 | { |
3388cf17 |
637 | buildFaces (aWires, theShape); |
e4f0cc46 |
638 | } |
639 | else if (!aFaceCompDraft.IsNull()) |
640 | { |
641 | theShape = aFaceCompDraft; |
b514beda |
642 | } |
643 | |
644 | myCache.Bind (theChar, theShape); |
645 | return !theShape.IsNull(); |
646 | } |