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0026664: Triangulating a very small polygon fails

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Parameter for adaptive computation of minimal 2D meshing precision added in BRepMesh_IncrementalMesh API.
Corresponding option -adaptive added in DRAW command

All meshing parameters are collected in structure, BRepMesh_FastDiscret::Parameters, which is now used to define and manipulate parameters of the algorithm.
This commit is contained in:
pdn
2015-09-08 18:51:33 +03:00
committed by bugmaster
parent 6b84c3f7db
commit e71669c6e5
16 changed files with 309 additions and 362 deletions
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92
src/BRepMesh/BRepMesh_IncrementalMesh.hxx
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@@ -54,28 +54,33 @@ public: //! @name mesher API
Standard_EXPORT BRepMesh_IncrementalMesh(
const TopoDS_Shape& theShape,
const Standard_Real theLinDeflection,
const Standard_Boolean isRelative = Standard_False,
const Standard_Boolean isRelative = Standard_False,
const Standard_Real theAngDeflection = 0.5,
const Standard_Boolean isInParallel = Standard_False);
const Standard_Boolean isInParallel = Standard_False,
const Standard_Boolean adaptiveMin = Standard_False);
//! Constructor.
//! Automatically calls method Perform.
//! @param theShape shape to be meshed.
//! @param theParameters - parameters of meshing
Standard_EXPORT BRepMesh_IncrementalMesh (const TopoDS_Shape& theShape,
const BRepMesh_FastDiscret::Parameters& theParameters);
//! Performs meshing ot the shape.
Standard_EXPORT virtual void Perform();
public: //! @name accessing to parameters.
//! Enables using relative deflection.
//! @param isRelative if TRUE deflection used for discretization of
//! each edge will be <theLinDeflection> * <size of edge>. Deflection
//! used for the faces will be the maximum deflection of their edges.
inline void SetRelative(const Standard_Boolean isRelative)
//! Returns meshing parameters
inline const BRepMesh_FastDiscret::Parameters& Parameters() const
{
myRelative = isRelative;
return myParameters;
}
//! Returns relative deflection flag.
inline Standard_Boolean IsRelative() const
//! Returns modifiable meshing parameters
inline BRepMesh_FastDiscret::Parameters& ChangeParameters()
{
return myRelative;
return myParameters;
}
//! Returns modified flag.
@@ -90,55 +95,6 @@ public: //! @name accessing to parameters.
return myStatus;
}
//! Request algorithm to launch in multiple threads to improve performance.
inline void SetParallel(const Standard_Boolean isInParallel)
{
myInParallel = isInParallel;
}
//! Returns the multi-threading usage flag.
inline Standard_Boolean IsParallel() const
{
return myInParallel;
}
//! Sets min size parameter.
inline void SetMinSize(const Standard_Real theMinSize)
{
myMinSize = Max(theMinSize, Precision::Confusion());
}
//! Returns min size parameter.
inline Standard_Real GetMinSize() const
{
return myMinSize;
}
//! Enables/disables internal vertices mode (enabled by default).
inline void SetInternalVerticesMode(const Standard_Boolean isEnabled)
{
myInternalVerticesMode = isEnabled;
}
//! Returns flag indicating is internal vertices mode enabled/disabled.
inline Standard_Boolean IsInternalVerticesMode() const
{
return myInternalVerticesMode;
}
//! Enables/disables control of deflection of mesh from real surface
//! (enabled by default).
inline void SetControlSurfaceDeflection(const Standard_Boolean isEnabled)
{
myIsControlSurfaceDeflection = isEnabled;
}
//! Returns flag indicating is adaptive reconfiguration
//! of mesh enabled/disabled.
inline Standard_Boolean IsControlSurfaceDeflection() const
{
return myIsControlSurfaceDeflection;
}
public: //! @name plugin API
@@ -221,18 +177,16 @@ private:
protected:
Standard_Boolean myRelative;
Standard_Boolean myInParallel;
BRepMesh::DMapOfEdgeListOfTriangulationBool myEdges;
Handle(BRepMesh_FastDiscret) myMesh;
Standard_Boolean myModified;
TopTools_DataMapOfShapeReal myEdgeDeflection;
Standard_Real myMaxShapeSize;
Standard_Integer myStatus;
NCollection_Vector<TopoDS_Face> myFaces;
Standard_Real myMinSize;
Standard_Boolean myInternalVerticesMode;
Standard_Boolean myIsControlSurfaceDeflection;
BRepMesh_FastDiscret::Parameters myParameters;
Standard_Real myMaxShapeSize;
Standard_Boolean myModified;
Standard_Integer myStatus;
};
DEFINE_STANDARD_HANDLE(BRepMesh_IncrementalMesh,BRepMesh_DiscretRoot)