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Changes for bug 0020705.

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This commit is contained in:
skl 2010-02-19 14:38:11 +00:00
parent da57c65070
commit 1ac99281d8
1 changed files with 63 additions and 2 deletions
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65
src/StdMeshers/StdMeshers_FaceSide.cxx
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@ -49,6 +49,9 @@
#include <TopoDS_Vertex.hxx>
#include <TopoDS_Wire.hxx>
#include <GCPnts_AbscissaPoint.hxx>
#include <Geom2dAdaptor_Curve.hxx>
#include <map>
#include "utilities.h"
@ -190,6 +193,28 @@ StdMeshers_FaceSide::StdMeshers_FaceSide(const SMDS_MeshNode* theNode,
}
}
//=======================================================================
//function : IsUniform
//purpose : auxilary function
//=======================================================================
bool IsUniform(const Handle(Geom2d_Curve)& C2d, double fp, double lp)
{
//cout<<"IsUniform fp = "<<fp<<" lp = "<<lp<<endl;
if(C2d.IsNull())
return true;
Geom2dAdaptor_Curve A2dC(C2d);
double d1 = GCPnts_AbscissaPoint::Length( A2dC, fp, lp );
double d2 = GCPnts_AbscissaPoint::Length( A2dC, fp, fp+(lp-fp)/2. );
double d4 = GCPnts_AbscissaPoint::Length( A2dC, fp, fp+(lp-fp)/4. );
//cout<<"d1 = "<<d1<<" d2 = "<<d2<<" fabs(2*d2/d1-1.0) = "<<fabs(2*d2/d1-1.0)<<endl;
if( fabs(2*d2/d1-1.0) > 0.01 || fabs(2*d4/d2-1.0) > 0.01 )
return false;
return true;
}
//================================================================================
/*!
* \brief Return info on nodes on the side
@ -236,11 +261,14 @@ const vector<UVPtStruct>& StdMeshers_FaceSide::GetUVPtStruct(bool isXConst,
u2node.insert( make_pair( 1., node ));
}
bool IsUni = IsUniform( myC2d[i], myFirst[i], myLast[i] );
// put internal nodes
SMESHDS_SubMesh* sm = meshDS->MeshElements( myEdge[i] );
if ( !sm ) continue;
SMDS_NodeIteratorPtr nItr = sm->GetNodes();
double paramSize = myLast[i] - myFirst[i], r = myNormPar[i] - prevNormPar;
double paramSize = myLast[i] - myFirst[i];
double r = myNormPar[i] - prevNormPar;
while ( nItr->more() ) {
const SMDS_MeshNode* node = nItr->next();
if ( myIgnoreMediumNodes && SMESH_MeshEditor::IsMedium( node, SMDSAbs_Edge ))
@ -249,7 +277,17 @@ const vector<UVPtStruct>& StdMeshers_FaceSide::GetUVPtStruct(bool isXConst,
static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
double u = epos->GetUParameter();
// paramSize is signed so orientation is taken into account
double normPar = prevNormPar + r * ( u - myFirst[i] ) / paramSize;
if(!IsUni) {
double fp,lp;
TopLoc_Location L;
Handle(Geom_Curve) C3d = BRep_Tool::Curve(myEdge[i],L,fp,lp);
GeomAdaptor_Curve A3dC( C3d );
double aLen = GCPnts_AbscissaPoint::Length( A3dC, myFirst[i], myLast[i] );
double aLenU = GCPnts_AbscissaPoint::Length( A3dC, myFirst[i], u );
normPar = prevNormPar + r*aLenU/aLen;
}
#ifdef _DEBUG_
if ( normPar > 1 || normPar < 0) {
dump("DEBUG");
@ -491,6 +529,7 @@ BRepAdaptor_CompCurve* StdMeshers_FaceSide::GetCurve3d() const
return new BRepAdaptor_CompCurve( aWire );
}
//================================================================================
/*!
* \brief Return 2D point by normalized parameter
@ -505,7 +544,29 @@ gp_Pnt2d StdMeshers_FaceSide::Value2d(double U) const
int i = EdgeIndex( U );
double prevU = i ? myNormPar[ i-1 ] : 0;
double r = ( U - prevU )/ ( myNormPar[ i ] - prevU );
return myC2d[ i ]->Value( myFirst[i] * ( 1 - r ) + myLast[i] * r );
double par = myFirst[i] * ( 1 - r ) + myLast[i] * r;
// check parametrization of curve
if( !IsUniform( myC2d[i], myFirst[i], myLast[i] ) ) {
double fp,lp;
TopLoc_Location L;
Handle(Geom_Curve) C3d = BRep_Tool::Curve(myEdge[i],L,fp,lp);
fp = myFirst[i];
lp = myLast[i];
GeomAdaptor_Curve A3dC( C3d );
double aLen3d = GCPnts_AbscissaPoint::Length( A3dC, fp, lp );
double aLen3dU = aLen3d*r;
if(fp>lp) {
aLen3dU = -aLen3dU;
}
GCPnts_AbscissaPoint AbPnt( A3dC, aLen3dU, fp );
if( AbPnt.IsDone() ) {
par = AbPnt.Parameter();
}
}
return myC2d[ i ]->Value(par);
}
//return gp_Pnt2d( 1e+100, 1e+100 );
return myDefaultPnt2d;