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// File: MeshVS_VectorPrsBuilder.cxx
// Created: Fri Sep 19 2003
// Author: Alexander SOLOVYOV
// Copyright: Open CASCADE 2003
#include <MeshVS_VectorPrsBuilder.ixx>
#include <MeshVS_DisplayModeFlags.hxx>
#include <Graphic3d_ArrayOfPolylines.hxx>
#include <Graphic3d_ArrayOfPolygons.hxx>
#include <Graphic3d_ArrayOfTriangleFans.hxx>
#include <Graphic3d_MaterialAspect.hxx>
#include <Graphic3d_AspectLine3d.hxx>
#include <Graphic3d_AspectFillArea3d.hxx>
#include <Graphic3d_Group.hxx>
#include <TColStd_MapIteratorOfPackedMapOfInteger.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColgp_Array1OfPnt.hxx>
#include <TColStd_HPackedMapOfInteger.hxx>
#include <Precision.hxx>
#include <gp_Ax3.hxx>
#include <Prs3d_Root.hxx>
#include <Aspect_TypeOfLine.hxx>
#include <MeshVS_DataSource.hxx>
#include <MeshVS_Drawer.hxx>
#include <MeshVS_DrawerAttribute.hxx>
#include <MeshVS_Mesh.hxx>
#include <MeshVS_EntityType.hxx>
#include <MeshVS_DataMapIteratorOfDataMapOfIntegerVector.hxx>
#include <MeshVS_Buffer.hxx>
//================================================================
// Function : Constructor MeshVS_VectorPrsBuilder
// Purpose :
//================================================================
MeshVS_VectorPrsBuilder::MeshVS_VectorPrsBuilder ( const Handle(MeshVS_Mesh)& Parent,
const Standard_Real MaxLength,
const Quantity_Color& VectorColor,
const MeshVS_DisplayModeFlags& Flags,
const Handle (MeshVS_DataSource)& DS,
const Standard_Integer Id,
const MeshVS_BuilderPriority& Priority,
const Standard_Boolean IsSimplePrs )
: MeshVS_PrsBuilder ( Parent, Flags, DS, Id, Priority ),
myIsSimplePrs( IsSimplePrs ),
mySimpleWidthPrm( 2.5 ),
mySimpleStartPrm( 0.85 ),
mySimpleEndPrm( 0.95 )
{
Handle ( MeshVS_Drawer ) aDrawer = GetDrawer();
if ( !aDrawer.IsNull() )
{
aDrawer->SetDouble ( MeshVS_DA_VectorMaxLength, MaxLength );
aDrawer->SetColor ( MeshVS_DA_VectorColor, VectorColor );
aDrawer->SetDouble ( MeshVS_DA_VectorArrowPart, 0.1 );
}
}
//================================================================
// Function : GetVectors
// Purpose :
//================================================================
const MeshVS_DataMapOfIntegerVector& MeshVS_VectorPrsBuilder::GetVectors
( const Standard_Boolean IsElements ) const
{
if ( IsElements )
return myElemVectorMap;
else
return myNodeVectorMap;
}
//================================================================
// Function : SetVectors
// Purpose :
//================================================================
void MeshVS_VectorPrsBuilder::SetVectors ( const Standard_Boolean IsElements,
const MeshVS_DataMapOfIntegerVector& theMap )
{
if ( IsElements )
myElemVectorMap = theMap;
else
myNodeVectorMap = theMap;
}
//================================================================
// Function : HasVectors
// Purpose :
//================================================================
Standard_Boolean MeshVS_VectorPrsBuilder::HasVectors ( const Standard_Boolean IsElement ) const
{
Standard_Boolean aRes = (myNodeVectorMap.Extent()>0);
if ( IsElement )
aRes = (myElemVectorMap.Extent()>0);
return aRes;
}
//================================================================
// Function : GetVector
// Purpose :
//================================================================
Standard_Boolean MeshVS_VectorPrsBuilder::GetVector ( const Standard_Boolean IsElement,
const Standard_Integer ID,
gp_Vec& Vect ) const
{
const MeshVS_DataMapOfIntegerVector* aMap = &myNodeVectorMap;
if ( IsElement )
aMap = &myElemVectorMap;
Standard_Boolean aRes = aMap->IsBound ( ID );
if ( aRes )
Vect = aMap->Find ( ID );
return aRes;
}
//================================================================
// Function : SetVector
// Purpose :
//================================================================
void MeshVS_VectorPrsBuilder::SetVector ( const Standard_Boolean IsElement,
const Standard_Integer ID,
const gp_Vec& Vect )
{
MeshVS_DataMapOfIntegerVector* aMap = &myNodeVectorMap;
if ( IsElement )
aMap = &myElemVectorMap;
Standard_Boolean aRes = aMap->IsBound ( ID );
if ( aRes )
aMap->ChangeFind ( ID ) = Vect;
else
aMap->Bind ( ID, Vect );
}
//================================================================
// Function : GetMaxVectorValue
// Purpose :
//================================================================
void MeshVS_VectorPrsBuilder::GetMinMaxVectorValue ( const Standard_Boolean IsElement,
Standard_Real& MinValue,
Standard_Real& MaxValue ) const
{
const MeshVS_DataMapOfIntegerVector* aMap = &myNodeVectorMap;
if ( IsElement )
aMap = &myElemVectorMap;
MeshVS_DataMapIteratorOfDataMapOfIntegerVector anIt ( *aMap );
if ( anIt.More() )
MinValue = MaxValue = anIt.Value().Magnitude();
Standard_Real aCurValue;
for ( ; anIt.More(); anIt.Next() )
{
aCurValue = anIt.Value().Magnitude();
if ( MinValue > aCurValue )
MinValue = aCurValue;
if ( MaxValue < aCurValue )
MaxValue = aCurValue;
}
}
//================================================================
// Function : Build
// Purpose :
//================================================================
#define NB_VERTICES 2
#define NB_BOUNDS 1
#define NB_TRIANGLES 6
#define NB_FANS 1
void MeshVS_VectorPrsBuilder::Build ( const Handle(Prs3d_Presentation)& Prs,
const TColStd_PackedMapOfInteger& IDs,
TColStd_PackedMapOfInteger& IDsToExclude,
const Standard_Boolean IsElement,
const Standard_Integer theDisplayMode ) const
{
Handle ( MeshVS_Drawer ) aDrawer = GetDrawer();
Handle (MeshVS_DataSource) aSource = GetDataSource();
if ( aSource.IsNull() || aDrawer.IsNull() || !HasVectors( IsElement ) ||
( theDisplayMode & GetFlags() )==0 )
return;
Standard_Integer aMaxFaceNodes;
Standard_Real aMaxLen, anArrowPart = 0.1;
if ( !aDrawer->GetInteger ( MeshVS_DA_MaxFaceNodes, aMaxFaceNodes ) ||
aMaxFaceNodes <= 0 ||
!aDrawer->GetDouble ( MeshVS_DA_VectorMaxLength, aMaxLen ) ||
aMaxLen <= 0 ||
!aDrawer->GetDouble ( MeshVS_DA_VectorArrowPart, anArrowPart ) ||
anArrowPart <= 0
)
return;
MeshVS_Buffer aCoordsBuf (3*aMaxFaceNodes*sizeof(Standard_Real));
TColStd_Array1OfReal aCoords (aCoordsBuf, 1, 3*aMaxFaceNodes);
Standard_Integer NbNodes;
MeshVS_EntityType aType;
// DECLARE ARRAYS OF PRIMITIVES
const MeshVS_DataMapOfIntegerVector& aMap = GetVectors ( IsElement );
Standard_Integer aNbVectors = aMap.Extent();
if ( aNbVectors <= 0 )
return;
// polylines
Standard_Integer aNbVertices = aNbVectors * NB_VERTICES;
Standard_Integer aNbBounds = aNbVectors * NB_BOUNDS;
// fans
Standard_Integer aNbTriangleVertices = aNbVectors * (NB_TRIANGLES + 2);
Standard_Integer aNbFans = aNbVectors * NB_TRIANGLES;
Handle(Graphic3d_ArrayOfPrimitives) aLineArray =
new Graphic3d_ArrayOfPolylines(aNbVertices, aNbBounds);
Handle(Graphic3d_ArrayOfPrimitives) aArrowLineArray =
new Graphic3d_ArrayOfPolylines(aNbVertices, aNbBounds);
Handle(Graphic3d_ArrayOfTriangleFans) aTriangleArray =
new Graphic3d_ArrayOfTriangleFans(aNbTriangleVertices, aNbFans);
TColgp_Array1OfPnt anArrowPnt(1,8);
Standard_Real k, b, aMaxValue, aMinValue, aValue, X, Y, Z;
Standard_Real aMinLength = calculateArrow( anArrowPnt, aMaxLen, anArrowPart );
gp_Vec aVec; gp_Trsf aTrsf;
GetMinMaxVectorValue ( IsElement, aMinValue, aMaxValue );
if ( aMaxValue - aMinValue > Precision::Confusion() )
{
k = 0.8 * aMaxLen / ( aMaxValue - aMinValue );
b = aMaxLen - k * aMaxValue;
}
else
{
k = 0;
b = aMaxLen;
}
TColStd_PackedMapOfInteger aCustomElements;
// subtract the hidden elements and ids to exclude (to minimise allocated memory)
TColStd_PackedMapOfInteger anIDs;
anIDs.Assign( IDs );
if ( IsElement )
{
Handle(TColStd_HPackedMapOfInteger) aHiddenElems = myParentMesh->GetHiddenElems();
if ( !aHiddenElems.IsNull() )
anIDs.Subtract( aHiddenElems->Map() );
}
anIDs.Subtract( IDsToExclude );
TColStd_MapIteratorOfPackedMapOfInteger it (anIDs);
for( ; it.More(); it.Next() )
{
Standard_Integer aKey = it.Key();
if( GetVector ( IsElement, aKey, aVec ) )
{
aValue = aVec.Magnitude();
if ( Abs( aValue ) < Precision::Confusion() )
continue;
if( aSource->GetGeom ( aKey, IsElement, aCoords, NbNodes, aType ) )
{
if( aType == MeshVS_ET_Node )
{
X = aCoords(1);
Y = aCoords(2);
Z = aCoords(3);
}
else if( aType == MeshVS_ET_Link ||
aType == MeshVS_ET_Face ||
aType == MeshVS_ET_Volume )
{
if( IsElement && IsExcludingOn() )
IDsToExclude.Add( aKey );
X = Y = Z = 0;
for ( Standard_Integer i=1; i<=NbNodes; i++ )
{
X += aCoords (3*i-2);
Y += aCoords (3*i-1);
Z += aCoords (3*i);
}
X /= Standard_Real ( NbNodes );
Y /= Standard_Real ( NbNodes );
Z /= Standard_Real ( NbNodes );
}
else
{
aCustomElements.Add( aKey );
continue;
}
aTrsf.SetDisplacement ( gp_Ax3 ( gp_Pnt ( 0, 0, 0 ), gp_Dir(0, 0, 1)),
gp_Ax3 ( gp_Pnt ( X, Y, Z ), aVec ) );
DrawVector ( aTrsf, Max( k * fabs( aValue ) + b, aMinLength), aMaxLen,
anArrowPnt, aLineArray, aArrowLineArray, aTriangleArray );
}
}
}
Prs3d_Root::NewGroup ( Prs );
Handle (Graphic3d_Group) aVGroup = Prs3d_Root::CurrentGroup ( Prs );
Quantity_Color aColor;
aDrawer->GetColor ( MeshVS_DA_VectorColor, aColor );
// Add primitive arrays to group
Handle(Graphic3d_AspectLine3d) aLinAspect =
new Graphic3d_AspectLine3d ( aColor, Aspect_TOL_SOLID, 1.5 );
aVGroup->SetPrimitivesAspect( aLinAspect );
aVGroup->BeginPrimitives();
aVGroup->AddPrimitiveArray( aLineArray );
aVGroup->EndPrimitives();
if ( !myIsSimplePrs )
{
Graphic3d_MaterialAspect aMatAspect;
aMatAspect.SetAmbient( 1 );
aMatAspect.SetDiffuse( 0 );
aMatAspect.SetEmissive( 0 );
aMatAspect.SetShininess( 1 );
aMatAspect.SetSpecular( 0 );
Handle(Graphic3d_AspectFillArea3d) aFillAspect =
new Graphic3d_AspectFillArea3d (Aspect_IS_HOLLOW, aColor, aColor, Aspect_TOL_SOLID,
1., aMatAspect, aMatAspect );
aVGroup->SetPrimitivesAspect( aFillAspect );
aVGroup->BeginPrimitives();
aVGroup->AddPrimitiveArray( aTriangleArray );
aVGroup->EndPrimitives();
}
else
{
Handle(Graphic3d_AspectLine3d) anArrowLinAspect =
new Graphic3d_AspectLine3d ( aColor, Aspect_TOL_SOLID, mySimpleWidthPrm * 1.5 );
aVGroup->SetPrimitivesAspect( anArrowLinAspect );
aVGroup->BeginPrimitives();
aVGroup->AddPrimitiveArray( aArrowLineArray );
aVGroup->EndPrimitives();
}
if( !aCustomElements.IsEmpty() )
CustomBuild( Prs, aCustomElements, IDsToExclude, theDisplayMode );
}
//=======================================================================
// name : DrawVector
// Purpose : Fill arrays of primitives for drawing force
//=======================================================================
void MeshVS_VectorPrsBuilder::DrawVector ( const gp_Trsf& theTrsf,
const Standard_Real Length,
const Standard_Real MaxLength,
const TColgp_Array1OfPnt& ArrowPoints,
const Handle(Graphic3d_ArrayOfPrimitives)& Lines,
const Handle(Graphic3d_ArrayOfPrimitives)& ArrowLines,
const Handle(Graphic3d_ArrayOfPrimitives)& Triangles) const
{
const int PntNum = 8;
const Standard_Real aMinLength = MaxLength * ( 1 - mySimpleStartPrm );
const Standard_Real aLocalLength = ( !myIsSimplePrs || Length > aMinLength ? Length : aMinLength );
// draw line
gp_Pnt aLinePnt[ 2 ] = { gp_Pnt( 0, 0, 0 ) , gp_Pnt( 0, 0, aLocalLength ) };
theTrsf.Transforms( aLinePnt[ 0 ].ChangeCoord() );
theTrsf.Transforms( aLinePnt[ 1 ].ChangeCoord() );
Lines->AddBound( 2 );
Lines->AddVertex( aLinePnt[ 0 ] );
Lines->AddVertex( aLinePnt[ 1 ] );
// draw arrow
if ( !myIsSimplePrs )
{
Standard_Integer l = ArrowPoints.Lower(),
u = ArrowPoints.Upper(),
i;
if ( u-l < PntNum-1 )
return;
TColgp_Array1OfPnt anArrowPnt( l, u );
for ( i = l; i < l+PntNum; i++ )
{
anArrowPnt( i ).ChangeCoord() = ArrowPoints ( i ).Coord() + gp_XYZ( 0, 0, aLocalLength );
theTrsf.Transforms( anArrowPnt( i ).ChangeCoord() );
}
Triangles->AddBound(8);
for ( i = 0; i < PntNum; i++ )
Triangles->AddVertex( anArrowPnt( l+i ) );
}
else
{
const Standard_Real aEndPos = aLocalLength - MaxLength * ( 1 - mySimpleEndPrm );
const Standard_Real aArrowLength = MaxLength * ( mySimpleEndPrm - mySimpleStartPrm );
gp_Pnt aArrowPnt[ 2 ] = { gp_Pnt( 0, 0, aEndPos - aArrowLength ),
gp_Pnt( 0, 0, aEndPos ) };
theTrsf.Transforms( aArrowPnt[ 0 ].ChangeCoord() );
theTrsf.Transforms( aArrowPnt[ 1 ].ChangeCoord() );
ArrowLines->AddBound( 2 );
ArrowLines->AddVertex( aArrowPnt[ 0 ] );
ArrowLines->AddVertex( aArrowPnt[ 1 ] );
}
}
//=======================================================================
// name : calculateArrow
// Purpose : Calculate points of arrow ( 8 pnts )
//=======================================================================
Standard_Real MeshVS_VectorPrsBuilder::calculateArrow ( TColgp_Array1OfPnt& Points,
const Standard_Real Length,
const Standard_Real ArrowPart )
{
Standard_Real h = Length * ArrowPart;
Standard_Real w = h / 5.;
Standard_Integer f = Points.Lower();
Points( f ) = gp_Pnt( 0, 0, 0 );
Points( f+1 ) = gp_Pnt( 0, -w, -h );
Points( f+2 ) = gp_Pnt( w * 0.866, -w * 0.5, -h );
Points( f+3 ) = gp_Pnt( w * 0.866, w * 0.5, -h );
Points( f+4 ) = gp_Pnt( 0 , w, -h );
Points( f+5 ) = gp_Pnt( -w * 0.866, w * 0.5, -h );
Points( f+6 ) = gp_Pnt( -w * 0.866, -w * 0.5, -h );
Points( f+7 ) = gp_Pnt( 0, -w, -h );
return h;
}
//=======================================================================
// name : SetSimplePrsMode
// Purpose :
//=======================================================================
void MeshVS_VectorPrsBuilder::SetSimplePrsMode( const Standard_Boolean IsSimpleArrow )
{
myIsSimplePrs = IsSimpleArrow;
}
//=======================================================================
// name : SetSimplePrsParams
// Purpose :
//=======================================================================
void MeshVS_VectorPrsBuilder::SetSimplePrsParams( const Standard_Real theLineWidthParam,
const Standard_Real theStartParam,
const Standard_Real theEndParam )
{
mySimpleWidthPrm = theLineWidthParam;
mySimpleStartPrm = theStartParam;
mySimpleEndPrm = theEndParam;
}
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