mirror of
https://git.salome-platform.org/gitpub/modules/smesh.git
synced 2025-03-14 19:51:16 +05:00
Make QuadToTri() put new nodes of quadratic triangles on a surface
This commit is contained in:
eap
parent
a2797078a4
commit
3c8cb0e08e
@ -41,6 +41,7 @@
|
||||
|
||||
#include "SMESH_subMesh.hxx"
|
||||
#include "SMESH_ControlsDef.hxx"
|
||||
#include "SMESH_MesherHelper.hxx"
|
||||
|
||||
#include "utilities.h"
|
||||
|
||||
@ -65,6 +66,7 @@
|
||||
#include <GeomAdaptor_Surface.hxx>
|
||||
#include <ElCLib.hxx>
|
||||
#include <TColStd_ListOfInteger.hxx>
|
||||
#include <TopoDS_Face.hxx>
|
||||
|
||||
#include <map>
|
||||
|
||||
@ -811,7 +813,7 @@ static double getBadRate (const SMDS_MeshElement* theElem,
|
||||
// theCrit is used to select a diagonal to cut
|
||||
//=======================================================================
|
||||
|
||||
bool SMESH_MeshEditor::QuadToTri (map<int,const SMDS_MeshElement*> & theElems,
|
||||
bool SMESH_MeshEditor::QuadToTri (map<int,const SMDS_MeshElement*> & theElems,
|
||||
SMESH::Controls::NumericalFunctorPtr theCrit)
|
||||
{
|
||||
myLastCreatedElems.Clear();
|
||||
@ -824,122 +826,133 @@ bool SMESH_MeshEditor::QuadToTri (map<int,const SMDS_MeshElement*> & theEl
|
||||
|
||||
SMESHDS_Mesh * aMesh = GetMeshDS();
|
||||
|
||||
Handle(Geom_Surface) surface;
|
||||
SMESH_MesherHelper helper( *GetMesh() );
|
||||
|
||||
map<int, const SMDS_MeshElement * >::iterator itElem;
|
||||
for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
|
||||
const SMDS_MeshElement* elem = (*itElem).second;
|
||||
if ( !elem || elem->GetType() != SMDSAbs_Face )
|
||||
continue;
|
||||
if ( elem->NbNodes() != ( elem->IsQuadratic() ? 8 : 4 ))
|
||||
continue;
|
||||
|
||||
if(elem->NbNodes()==4) {
|
||||
// retrieve element nodes
|
||||
const SMDS_MeshNode* aNodes [8];
|
||||
SMDS_ElemIteratorPtr itN = elem->nodesIterator();
|
||||
int i = 0;
|
||||
while ( itN->more() )
|
||||
aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
|
||||
|
||||
// retrieve element nodes
|
||||
const SMDS_MeshNode* aNodes [4];
|
||||
SMDS_ElemIteratorPtr itN = elem->nodesIterator();
|
||||
int i = 0;
|
||||
while ( itN->more() )
|
||||
aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
|
||||
// compare two sets of possible triangles
|
||||
double aBadRate1, aBadRate2; // to what extent a set is bad
|
||||
SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
|
||||
SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
|
||||
aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
|
||||
|
||||
// compare two sets of possible triangles
|
||||
double aBadRate1, aBadRate2; // to what extent a set is bad
|
||||
SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
|
||||
SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
|
||||
aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
|
||||
|
||||
SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
|
||||
SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
|
||||
aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
|
||||
SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
|
||||
SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
|
||||
aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
|
||||
|
||||
int aShapeId = FindShape( elem );
|
||||
//MESSAGE( "aBadRate1 = " << aBadRate1 << "; aBadRate2 = " << aBadRate2
|
||||
// << " ShapeID = " << aShapeId << endl << elem );
|
||||
int aShapeId = FindShape( elem );
|
||||
const SMDS_MeshElement* newElem = 0;
|
||||
|
||||
if( !elem->IsQuadratic() ) {
|
||||
|
||||
// split liner quadrangle
|
||||
|
||||
if ( aBadRate1 <= aBadRate2 ) {
|
||||
// tr1 + tr2 is better
|
||||
aMesh->ChangeElementNodes( elem, aNodes, 3 );
|
||||
//MESSAGE( endl << elem );
|
||||
|
||||
elem = aMesh->AddFace( aNodes[2], aNodes[3], aNodes[0] );
|
||||
newElem = aMesh->AddFace( aNodes[2], aNodes[3], aNodes[0] );
|
||||
}
|
||||
else {
|
||||
// tr3 + tr4 is better
|
||||
aMesh->ChangeElementNodes( elem, &aNodes[1], 3 );
|
||||
//MESSAGE( endl << elem );
|
||||
|
||||
elem = aMesh->AddFace( aNodes[3], aNodes[0], aNodes[1] );
|
||||
newElem = aMesh->AddFace( aNodes[3], aNodes[0], aNodes[1] );
|
||||
}
|
||||
//MESSAGE( endl << elem );
|
||||
myLastCreatedElems.Append(elem);
|
||||
|
||||
// put a new triangle on the same shape
|
||||
if ( aShapeId )
|
||||
aMesh->SetMeshElementOnShape( elem, aShapeId );
|
||||
}
|
||||
else {
|
||||
|
||||
if( elem->NbNodes()==8 && elem->IsQuadratic() ) {
|
||||
// split qudratic quadrangle
|
||||
|
||||
// get surface elem is on
|
||||
if ( aShapeId != helper.GetSubShapeID() ) {
|
||||
surface.Nullify();
|
||||
TopoDS_Shape shape = aMesh->IndexToShape( aShapeId );
|
||||
if ( !shape.IsNull() && shape.ShapeType() == TopAbs_FACE ) {
|
||||
TopoDS_Face face = TopoDS::Face( shape );
|
||||
surface = BRep_Tool::Surface( face );
|
||||
if ( !surface.IsNull() )
|
||||
helper.SetSubShape( shape );
|
||||
}
|
||||
}
|
||||
// get elem nodes
|
||||
const SMDS_MeshNode* aNodes [8];
|
||||
const SMDS_MeshNode* inFaceNode = 0;
|
||||
SMDS_ElemIteratorPtr itN = elem->nodesIterator();
|
||||
int i = 0;
|
||||
while ( itN->more() ) {
|
||||
aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
|
||||
if ( !inFaceNode && helper.GetNodeUVneedInFaceNode() &&
|
||||
aNodes[ i-1 ]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
|
||||
{
|
||||
inFaceNode = aNodes[ i-1 ];
|
||||
}
|
||||
}
|
||||
|
||||
// compare two sets of possible triangles
|
||||
// use for comparing simple triangles (not quadratic)
|
||||
double aBadRate1, aBadRate2; // to what extent a set is bad
|
||||
SMDS_FaceOfNodes tr1 ( aNodes[0], aNodes[1], aNodes[2] );
|
||||
SMDS_FaceOfNodes tr2 ( aNodes[2], aNodes[3], aNodes[0] );
|
||||
aBadRate1 = getBadRate( &tr1, theCrit ) + getBadRate( &tr2, theCrit );
|
||||
|
||||
SMDS_FaceOfNodes tr3 ( aNodes[1], aNodes[2], aNodes[3] );
|
||||
SMDS_FaceOfNodes tr4 ( aNodes[3], aNodes[0], aNodes[1] );
|
||||
aBadRate2 = getBadRate( &tr3, theCrit ) + getBadRate( &tr4, theCrit );
|
||||
|
||||
int aShapeId = FindShape( elem );
|
||||
|
||||
// find middle point for (0,1,2,3)
|
||||
// and create node in this point;
|
||||
double x=0., y=0., z=0.;
|
||||
for(i=0; i<4; i++) {
|
||||
x += aNodes[i]->X();
|
||||
y += aNodes[i]->Y();
|
||||
z += aNodes[i]->Z();
|
||||
// and create a node in this point;
|
||||
gp_XYZ p( 0,0,0 );
|
||||
if ( surface.IsNull() ) {
|
||||
for(i=0; i<4; i++)
|
||||
p += gp_XYZ(aNodes[i]->X(), aNodes[i]->Y(), aNodes[i]->Z() );
|
||||
p /= 4;
|
||||
}
|
||||
const SMDS_MeshNode* newN = aMesh->AddNode(x/4, y/4, z/4);
|
||||
else {
|
||||
TopoDS_Face face = TopoDS::Face( helper.GetSubShape() );
|
||||
gp_XY uv( 0,0 );
|
||||
for(i=0; i<4; i++)
|
||||
uv += helper.GetNodeUV( face, aNodes[i], inFaceNode );
|
||||
uv /= 4.;
|
||||
p = surface->Value( uv.X(), uv.Y() ).XYZ();
|
||||
}
|
||||
const SMDS_MeshNode* newN = aMesh->AddNode( p.X(), p.Y(), p.Z() );
|
||||
myLastCreatedNodes.Append(newN);
|
||||
|
||||
// create a new element
|
||||
const SMDS_MeshNode* N[6];
|
||||
if ( aBadRate1 <= aBadRate2 ) {
|
||||
// tr1 + tr2 is better
|
||||
const SMDS_MeshNode* N[6];
|
||||
N[0] = aNodes[0];
|
||||
N[1] = aNodes[1];
|
||||
N[2] = aNodes[2];
|
||||
N[3] = aNodes[4];
|
||||
N[4] = aNodes[5];
|
||||
N[5] = newN;
|
||||
aMesh->ChangeElementNodes( elem, N, 6 );
|
||||
elem = aMesh->AddFace(aNodes[2], aNodes[3], aNodes[0],
|
||||
aNodes[6], aNodes[7], newN );
|
||||
newElem = aMesh->AddFace(aNodes[2], aNodes[3], aNodes[0],
|
||||
aNodes[6], aNodes[7], newN );
|
||||
}
|
||||
else {
|
||||
// tr3 + tr4 is better
|
||||
const SMDS_MeshNode* N[6];
|
||||
N[0] = aNodes[1];
|
||||
N[1] = aNodes[2];
|
||||
N[2] = aNodes[3];
|
||||
N[3] = aNodes[5];
|
||||
N[4] = aNodes[6];
|
||||
N[5] = newN;
|
||||
aMesh->ChangeElementNodes( elem, N, 6 );
|
||||
elem = aMesh->AddFace(aNodes[3], aNodes[0], aNodes[1],
|
||||
aNodes[7], aNodes[4], newN );
|
||||
newElem = aMesh->AddFace(aNodes[3], aNodes[0], aNodes[1],
|
||||
aNodes[7], aNodes[4], newN );
|
||||
}
|
||||
myLastCreatedElems.Append(elem);
|
||||
// put a new triangle on the same shape
|
||||
if ( aShapeId ) {
|
||||
aMesh->SetMeshElementOnShape( elem, aShapeId );
|
||||
}
|
||||
}
|
||||
aMesh->ChangeElementNodes( elem, N, 6 );
|
||||
|
||||
} // qudratic case
|
||||
|
||||
// care of a new element
|
||||
|
||||
myLastCreatedElems.Append(newElem);
|
||||
AddToSameGroups( newElem, elem, aMesh );
|
||||
|
||||
// put a new triangle on the same shape
|
||||
if ( aShapeId )
|
||||
aMesh->SetMeshElementOnShape( newElem, aShapeId );
|
||||
}
|
||||
return true;
|
||||
}
|
||||
@ -1036,7 +1049,7 @@ void SMESH_MeshEditor::RemoveElemFromGroups (const SMDS_MeshElement* removeelem,
|
||||
//=======================================================================
|
||||
|
||||
bool SMESH_MeshEditor::QuadToTri (std::map<int,const SMDS_MeshElement*> & theElems,
|
||||
const bool the13Diag)
|
||||
const bool the13Diag)
|
||||
{
|
||||
myLastCreatedElems.Clear();
|
||||
myLastCreatedNodes.Clear();
|
||||
@ -1045,6 +1058,9 @@ bool SMESH_MeshEditor::QuadToTri (std::map<int,const SMDS_MeshElement*> & theEle
|
||||
|
||||
SMESHDS_Mesh * aMesh = GetMeshDS();
|
||||
|
||||
Handle(Geom_Surface) surface;
|
||||
SMESH_MesherHelper helper( *GetMesh() );
|
||||
|
||||
map<int, const SMDS_MeshElement * >::iterator itElem;
|
||||
for ( itElem = theElems.begin(); itElem != theElems.end(); itElem++ ) {
|
||||
const SMDS_MeshElement* elem = (*itElem).second;
|
||||
@ -1078,52 +1094,80 @@ bool SMESH_MeshEditor::QuadToTri (std::map<int,const SMDS_MeshElement*> & theEle
|
||||
AddToSameGroups( newElem, elem, aMesh );
|
||||
}
|
||||
|
||||
// Quadratic quadrangle
|
||||
|
||||
if( elem->NbNodes()==8 && elem->IsQuadratic() ) {
|
||||
|
||||
// get surface elem is on
|
||||
int aShapeId = FindShape( elem );
|
||||
if ( aShapeId != helper.GetSubShapeID() ) {
|
||||
surface.Nullify();
|
||||
TopoDS_Shape shape = aMesh->IndexToShape( aShapeId );
|
||||
if ( !shape.IsNull() && shape.ShapeType() == TopAbs_FACE ) {
|
||||
TopoDS_Face face = TopoDS::Face( shape );
|
||||
surface = BRep_Tool::Surface( face );
|
||||
if ( !surface.IsNull() )
|
||||
helper.SetSubShape( shape );
|
||||
}
|
||||
}
|
||||
|
||||
const SMDS_MeshNode* aNodes [8];
|
||||
const SMDS_MeshNode* inFaceNode = 0;
|
||||
SMDS_ElemIteratorPtr itN = elem->nodesIterator();
|
||||
int i = 0;
|
||||
while ( itN->more() ) {
|
||||
aNodes[ i++ ] = static_cast<const SMDS_MeshNode*>( itN->next() );
|
||||
if ( !inFaceNode && helper.GetNodeUVneedInFaceNode() &&
|
||||
aNodes[ i-1 ]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_FACE )
|
||||
{
|
||||
inFaceNode = aNodes[ i-1 ];
|
||||
}
|
||||
}
|
||||
|
||||
// find middle point for (0,1,2,3)
|
||||
// and create node in this point;
|
||||
double x=0., y=0., z=0.;
|
||||
for(i=0; i<4; i++) {
|
||||
x += aNodes[i]->X();
|
||||
y += aNodes[i]->Y();
|
||||
z += aNodes[i]->Z();
|
||||
// and create a node in this point;
|
||||
gp_XYZ p( 0,0,0 );
|
||||
if ( surface.IsNull() ) {
|
||||
for(i=0; i<4; i++)
|
||||
p += gp_XYZ(aNodes[i]->X(), aNodes[i]->Y(), aNodes[i]->Z() );
|
||||
p /= 4;
|
||||
}
|
||||
const SMDS_MeshNode* newN = aMesh->AddNode(x/4, y/4, z/4);
|
||||
else {
|
||||
TopoDS_Face geomFace = TopoDS::Face( helper.GetSubShape() );
|
||||
gp_XY uv( 0,0 );
|
||||
for(i=0; i<4; i++)
|
||||
uv += helper.GetNodeUV( geomFace, aNodes[i], inFaceNode );
|
||||
uv /= 4.;
|
||||
p = surface->Value( uv.X(), uv.Y() ).XYZ();
|
||||
}
|
||||
const SMDS_MeshNode* newN = aMesh->AddNode( p.X(), p.Y(), p.Z() );
|
||||
myLastCreatedNodes.Append(newN);
|
||||
|
||||
int aShapeId = FindShape( elem );
|
||||
// create a new element
|
||||
const SMDS_MeshElement* newElem = 0;
|
||||
const SMDS_MeshNode* N[6];
|
||||
if ( the13Diag ) {
|
||||
const SMDS_MeshNode* N[6];
|
||||
N[0] = aNodes[0];
|
||||
N[1] = aNodes[1];
|
||||
N[2] = aNodes[2];
|
||||
N[3] = aNodes[4];
|
||||
N[4] = aNodes[5];
|
||||
N[5] = newN;
|
||||
aMesh->ChangeElementNodes( elem, N, 6 );
|
||||
elem = aMesh->AddFace(aNodes[2], aNodes[3], aNodes[0],
|
||||
aNodes[6], aNodes[7], newN );
|
||||
newElem = aMesh->AddFace(aNodes[2], aNodes[3], aNodes[0],
|
||||
aNodes[6], aNodes[7], newN );
|
||||
}
|
||||
else {
|
||||
const SMDS_MeshNode* N[6];
|
||||
N[0] = aNodes[1];
|
||||
N[1] = aNodes[2];
|
||||
N[2] = aNodes[3];
|
||||
N[3] = aNodes[5];
|
||||
N[4] = aNodes[6];
|
||||
N[5] = newN;
|
||||
aMesh->ChangeElementNodes( elem, N, 6 );
|
||||
elem = aMesh->AddFace(aNodes[3], aNodes[0], aNodes[1],
|
||||
aNodes[7], aNodes[4], newN );
|
||||
newElem = aMesh->AddFace(aNodes[3], aNodes[0], aNodes[1],
|
||||
aNodes[7], aNodes[4], newN );
|
||||
}
|
||||
myLastCreatedElems.Append(elem);
|
||||
myLastCreatedElems.Append(newElem);
|
||||
aMesh->ChangeElementNodes( elem, N, 6 );
|
||||
// put a new triangle on the same shape and add to the same groups
|
||||
if ( aShapeId )
|
||||
aMesh->SetMeshElementOnShape( newElem, aShapeId );
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user