1 // Copyright (C) 2007-2024 CEA, EDF, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
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13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 #ifndef _GEOMUtils_HXX_
24 #define _GEOMUtils_HXX_
26 #include <Standard_Macro.hxx>
27 #include <TopoDS_Shape.hxx>
28 #include <TopoDS_Vertex.hxx>
30 #include <TopTools_ListOfShape.hxx>
37 #include <V3d_View.hxx>
39 #include <NCollection_DataMap.hxx>
50 inline Standard_Boolean IsEqual (const TopoDS_Shape& S1, const TopoDS_Shape& S2)
59 * This enumeration represents comparison conditions.
61 enum ComparisonCondition {
62 CC_GT, ///< Greater then
63 CC_GE, ///< Greater then or equal to
65 CC_LE ///< Less then or equal to
68 typedef std::vector<std::string> NodeLinks;
69 typedef std::map<std::string, NodeLinks> LevelInfo;
70 typedef std::vector<LevelInfo> LevelsList;
71 typedef std::map<std::string,std::pair<LevelsList,LevelsList> > TreeModel;
74 * \brief Compute numerical functor for the shape.
76 * Resulting value can be used to sort out shapes according to some parameter.
78 * Returns a pair of two values (dist, functor) where
79 * - \a dist is a some value that is computed according to the center of mass of given shape;
80 * - \a functor is a numerical functor value
82 * The numerical functor is computed according to the shape's topological properties as follows:
83 * - orientation for vertices
84 * - length for edges and wires
85 * - area for faces and shells
86 * - volume for solids, compounds, compsolids
88 * If \a isOldSorting parameter is set to \c true, for all cases linear properties of the shape
89 * are used (to support backward compatibility in some methods). By default, this parameter is
92 Standard_EXPORT std::pair<double, double> ShapeToDouble (const TopoDS_Shape& theShape,
93 bool isOldSorting = false);
96 * \brief Get Local Coordinate System, corresponding to the given shape.
98 * Origin of the LCS is situated at the shape's center of mass.
99 * Axes of the LCS are obtained from shape's location or,
100 * if the shape is a planar face, from position of its plane.
102 Standard_EXPORT gp_Ax3 GetPosition (const TopoDS_Shape& theShape);
105 * \brief Get vector, defined by the given edge.
106 * \param theShape The edge.
107 * \param doConsiderOrientation If True, take into account the edge orientation.
108 * \note It is recommended to use doConsiderOrientation=Standard_False, because
109 * the same edge can have different orientation depending on the way it was
110 * extracted from a shape.
112 Standard_EXPORT gp_Vec GetVector (const TopoDS_Shape& theShape,
113 Standard_Boolean doConsiderOrientation);
116 * \brief Sort shapes in the list by their coordinates.
117 * \param SL The list of shapes to sort.
119 struct CompareShapes //: public std::binary_function<TopoDS_Shape, TopoDS_Shape, bool>
121 CompareShapes (bool isOldSorting)
122 : myIsOldSorting(isOldSorting) {}
124 bool operator() (const TopoDS_Shape& lhs, const TopoDS_Shape& rhs);
126 typedef NCollection_DataMap<TopoDS_Shape, std::pair<double, double> > GEOMUtils_DataMapOfShapeDouble;
127 GEOMUtils_DataMapOfShapeDouble myMap;
132 * \brief Sort shapes by their centers of mass, using formula X*999 + Y*99 + Z*0.9
134 Standard_EXPORT void SortShapes (TopTools_ListOfShape& SL,
135 const Standard_Boolean isOldSorting = Standard_True);
138 * \brief Convert TopoDS_COMPSOLID to TopoDS_COMPOUND.
140 * If the argument shape is not of type TopoDS_COMPSOLID, this method returns it as is.
142 * \param theCompsolid The compsolid to be converted.
143 * \retval TopoDS_Shape Returns the resulting compound.
145 Standard_EXPORT TopoDS_Shape CompsolidToCompound (const TopoDS_Shape& theCompsolid);
148 * \brief Recursively extract all shapes from compounds and compsolids of the given shape into theList.
150 * If theShape is not compound or compsolid, theList will contain only theShape itself.
152 * \param theShape The shape to be exploded.
153 * \param theList Output parameter.
155 Standard_EXPORT void AddSimpleShapes (const TopoDS_Shape& theShape,
156 TopTools_ListOfShape& theList);
159 * \brief Return type of shape for explode. In case of compound it will be a type of its first sub shape.
160 * \param theShape The shape to get type of.
161 * \retval TopAbs_ShapeEnum Return type of shape for explode.
163 Standard_EXPORT TopAbs_ShapeEnum GetTypeOfSimplePart (const TopoDS_Shape& theShape);
166 * \brief Find an edge of theShape, closest to thePoint.
168 * \param theShape The shape to explore.
169 * \param thePoint The point near the required edge.
170 * \retval TopoDS_Shape Returns the found edge or an empty shape if multiple edges found.
172 Standard_EXPORT TopoDS_Shape GetEdgeNearPoint (const TopoDS_Shape& theShape,
173 const TopoDS_Vertex& thePoint);
176 * \brief Compute precise bounding box of the shape based on the rough bounding box.
178 * \param theShape the shape.
179 * \param theBox rough bounding box on input; precise bounding box on output.
180 * \retval Standard_True in case of success; Standard_False otherwise.
182 Standard_EXPORT Standard_Boolean PreciseBoundingBox(const TopoDS_Shape &theShape, Bnd_Box &theBox);
185 * \brief Computes minumal distance between two shapes for singular cases
186 * (workaround for bugs 19899, 19908 and 19910 from Mantis).
188 * \param aSh1 the first shape
189 * \param aSh2 the second shape
190 * \param Ptmp1 the output result point on the first shape
191 * \param Ptmp2 the output result point on the second shape
192 * \retval negative value if it is not a singular case; actual distance for singular case.
194 Standard_EXPORT Standard_Real GetMinDistanceSingular(const TopoDS_Shape& aSh1,
195 const TopoDS_Shape& aSh2,
196 gp_Pnt& Ptmp1, gp_Pnt& Ptmp2);
199 * \brief Computes minumal distance between two shapes.
201 * \param theShape1 the first shape
202 * \param theShape2 the second shape
203 * \param thePnt1 the output result point on the first shape
204 * \param thePnt2 the output result point on the second shape
205 * \retval negative value in case of failure; otherwise the real distance.
207 Standard_EXPORT Standard_Real GetMinDistance(const TopoDS_Shape& theShape1,
208 const TopoDS_Shape& theShape2,
209 gp_Pnt& thePnt1, gp_Pnt& thePnt2);
212 * \brief Computes normal projection of \a thePoint to \a theFace.
214 * \param thePoint the 3d point
215 * \param theFace the face shape
216 * \param theU the output U parameter of the point on the face
217 * \param theV the output V parameter of the point on the face
218 * \param theTol the tolerance value. Maximum of theTol and 1e-04 will be used for calculation.
219 * \retval the projection (3d point) if found, throws an exception otherwise
221 Standard_EXPORT gp_Pnt ProjectPointOnFace(const gp_Pnt& thePoint,
222 const TopoDS_Shape& theFace,
223 double& theU, double& theV,
224 const double theTol = 1e-04);
227 * \brief Returns the point clicked in 3D view.
229 * \param x The X coordinate in the view.
230 * \param y The Y coordinate in the view.
231 * \param theView View where the given point takes place.
232 * \retval gp_Pnt Returns the point clicked in 3D view
234 Standard_EXPORT gp_Pnt ConvertClickToPoint( int x, int y, Handle(V3d_View) theView );
237 * \brief Convert dependency tree data to the string representation
239 * \param tree dependency tree data
240 * \param dependencyStr output string
242 Standard_EXPORT void ConvertTreeToString( const TreeModel& tree,
243 std::string& dependencyStr );
246 * \brief Restore dependency tree data from the string representation
248 * \param dependencyStr string representation of tree data
249 * \param tree output dependency tree data
251 Standard_EXPORT void ConvertStringToTree( const std::string& dependencyStr,
257 * \param shape input shape object
258 * \param checkGeometry when set to \c true, causes check of underlying geometry
259 * in addition to the topology
260 * \return \c true if shape is valid or \c false otherwise
262 Standard_EXPORT bool CheckShape( TopoDS_Shape& shape, bool checkGeometry = false );
265 * \brief Check boolean and partition operations arguments
267 * \param theShape the argument of an operation to be checked
268 * \return \c true if the argument is valid for a boolean or partition
269 * operation or \c false otherwise
271 Standard_EXPORT bool CheckBOPArguments(const TopoDS_Shape &theShape);
274 * \brief Limit shape tolerance to the given value
276 * \param shape shape being fixed
277 * \param type topology type which tolerance is to be limited; TopAbs_SHAPE means
278 * all types of topology
279 * \param tolerance expected tolerance value (1e-7 by default)
280 * \param checkGeometry check geometry validity of result
281 * \return \c true if resulting shape is valid
283 * \note Resulting tolerance of the shape is not mandatory equal to requested value
284 * as it might be changed by fixshape operation in order to get valid shape where possible
285 * \note By default, result only checked for topology validity; check of geometry can be done by
286 * passing \c true to \a checkGeometry parameter
288 Standard_EXPORT bool FixShapeTolerance( TopoDS_Shape& shape,
289 TopAbs_ShapeEnum type,
290 Standard_Real tolerance = Precision::Confusion(),
291 bool checkGeometry = false );
294 * \brief Limit shape tolerance to the given value
295 * This is overloaded function, it behaves exactly as previous one
297 Standard_EXPORT bool FixShapeTolerance( TopoDS_Shape& shape,
298 Standard_Real tolerance = Precision::Confusion(),
299 bool checkGeometry = false );
302 * \brief Limit shape tolerance to the given value
303 * This is overloaded function, it behaves exactly as previous one
305 Standard_EXPORT bool FixShapeTolerance( TopoDS_Shape& shape,
306 bool checkGeometry );
309 * \brief Fix curves of the given shape
311 * The function checks each curve of the input shape in the following way:
312 * - compute deviation of the curve from the underlying surface in a set of points
313 * computed with the certain discretization step value
314 * - find maximum tolerance between computed deviation values
315 * - limit tolerance of the curve with the computed maximum value
317 * \param shape shape being fixed
318 * \return \c true if resulting shape is valid
320 Standard_EXPORT bool FixShapeCurves( TopoDS_Shape& shape );
323 * \brief Write shape to the BREP file
325 * \param source shape
326 * \return \c true if file was written or \c false otherwise
328 Standard_EXPORT bool Write( const TopoDS_Shape& shape,
329 const char* fileName );
332 * \brief Extract single SOLID from COMPSOLID or COMPOUND.
334 * If the argument shape is a COMPOUND or COMPSOLID and there's
335 * only single simple-shape type inside, this sub-shape is returned as a result;
336 * otherwise, the shape is not changed.
338 * \param shape compound or compsolid being processed.
339 * \retval TopoDS_Shape resulting shape
341 Standard_EXPORT TopoDS_Shape ReduceCompound( const TopoDS_Shape& shape );
344 * \brief Get default deflection coefficient used for triangulation
345 * \return default deflection value
347 Standard_EXPORT double DefaultDeflection();
350 * \brief Generate triangulation for \a theShape.
352 * \param theShape shape to be meshed.
353 * \param theDeflection deflection coefficient to be used.
354 * \param theForced if \c true, causes generation of mesh regardless it is already present in the shape.
355 * \param theAngleDeflection angular deflection coefficient to be used.
356 * \param isRelative if true, \a theDeflection is considered relative to \a theShape maximum axial dimension.
357 * \param doPostCheck if true, check mesh generation result and return corresponding boolean value.
358 * \retval bool Returns false in the following cases:
359 * 1. The shape has neither faces nor edges, i.e. impossible to build triangulation or polygon.
360 * 2. \a theForced is false and \a theShape has no mesh or has incomplete mesh.
361 * 3. \a doPostCheck is true and mesh generation failed or produced an incomplete mesh.
363 Standard_EXPORT bool MeshShape( const TopoDS_Shape theShape,
364 const double theDeflection = DefaultDeflection(),
365 const bool theForced = true,
366 const double theAngleDeflection = 0.5,
367 const bool isRelative = true,
368 const bool doPostCheck = false);
371 * \brief Build a triangulation on \a theShape if it is absent.
372 * \param theShape The shape to check/build triangulation on.
373 * \retval bool Returns false if the shape has no faces, i.e. impossible to build triangulation.
375 Standard_EXPORT bool CheckTriangulation (const TopoDS_Shape& theShape);
378 * \brief Check if the shape is not a closed wire or edge.
380 * This function is used for pipe creation algorithm to test if
381 * the pipe path is not closed. It returns false if theShape is a wire or
382 * an edge with coincident end vertices. Otherwise it returns true.
384 * \param theShape the shape to be tested.
385 * \return true if theShape is not a closed wire or edge.
387 Standard_EXPORT bool IsOpenPath(const TopoDS_Shape &theShape);
390 * This function compares two tolerances. The shape tolerance (the first
391 * argument) is considered less than the reference tolerance (the second
392 * argument) if theTolShape < theTolRef - Tolerance(theTolRef). theTolShape is
393 * considered greater than theTolRef if theTolShape > theTolRef +
394 * Tolerance(theTolRef). Otherwise these tolerances are equal.
395 * Tolerance(theTolRef) = theTolRef*DEFAULT_TOLERANCE_TOLERANCE. But this value
396 * should not be greated than DEFAULT_MAX_TOLERANCE_TOLERANCE.
398 * \param theTolShape the shape tolerance
399 * \param theTolRef the reference tolerance
400 * \return -1 if theTolShape is less than theTolRef; 1 if theTolShape is greater
401 * than theTolRef; 0 if they are equal
403 Standard_EXPORT int CompareToleranceValues(const double theTolShape,
404 const double theTolRef);
407 * Check if the comarison of tolerances fit the condition. The comparison of
408 * tolerances is performed using the function CompareToleranceValues.
410 * \param theCondition the condition
411 * \param theTolShape the shape tolerance
412 * \param theTolRef the reference tolerance
413 * \return true if the shape tolerance fits the condition; false otherwise.
415 Standard_EXPORT bool IsFitCondition(const ComparisonCondition theCondition,
416 const double theTolShape,
417 const double theTolRef);