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0028788: Visualization, StdPrs_WFShape - Add option to compute Isolines using multiple threads

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StdPrs_WFShape::Add() now accepts new argument theIsParallel (FALSE by default)
for computing Isolines using multiple threads (if there is more then 1 Face).
StdPrs_Isolines::addOnTriangulation() - changed the iteration order (cosmetics).
This commit is contained in:
kgv 2017-05-25 17:36:10 +03:00 committed by bugmaster
parent 3ae5dc8173
commit 884cafd893
5 changed files with 144 additions and 108 deletions
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5
src/Prs3d/Prs3d_ShapeTool.cxx
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@ -142,11 +142,10 @@ Bnd_Box Prs3d_ShapeTool::FaceBound() const
//purpose :
//=======================================================================
Standard_Boolean Prs3d_ShapeTool::IsPlanarFace() const
Standard_Boolean Prs3d_ShapeTool::IsPlanarFace (const TopoDS_Face& theFace)
{
TopLoc_Location l;
const TopoDS_Face& F = TopoDS::Face(myFaceExplorer.Current());
const Handle(Geom_Surface)& S = BRep_Tool::Surface(F, l);
const Handle(Geom_Surface)& S = BRep_Tool::Surface(theFace, l);
if (S.IsNull())
{
return Standard_False;

42
src/Prs3d/Prs3d_ShapeTool.hxx
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@ -17,37 +17,29 @@
#ifndef _Prs3d_ShapeTool_HeaderFile
#define _Prs3d_ShapeTool_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Shape.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <Standard_Integer.hxx>
#include <Standard_Boolean.hxx>
#include <TopTools_HSequenceOfShape.hxx>
class TopoDS_Shape;
class TopoDS_Face;
class Bnd_Box;
class TopoDS_Edge;
class TopoDS_Vertex;
class Poly_Triangulation;
class TopLoc_Location;
class Poly_PolygonOnTriangulation;
class Poly_Polygon3D;
//! describes the behaviour requested for a wireframe
//! shape presentation.
class Prs3d_ShapeTool
{
public:
DEFINE_STANDARD_ALLOC
//! Constructs the tool and initializes it using theShape and theAllVertices
//! (optional) arguments. By default, only isolated and internal vertices are considered,
//! however if theAllVertices argument is equal to True, all shape's vertices are taken into account.
@ -62,9 +54,13 @@ public:
Standard_EXPORT const TopoDS_Face& GetFace() const;
Standard_EXPORT Bnd_Box FaceBound() const;
Standard_EXPORT Standard_Boolean IsPlanarFace() const;
Standard_Boolean IsPlanarFace() const
{
const TopoDS_Face& aFace = TopoDS::Face (myFaceExplorer.Current());
return IsPlanarFace (aFace);
}
Standard_EXPORT void InitCurve();
Standard_EXPORT Standard_Boolean MoreCurve() const;
@ -97,19 +93,12 @@ public:
Standard_EXPORT Handle(Poly_Polygon3D) Polygon3D (TopLoc_Location& l) const;
public:
protected:
Standard_EXPORT static Standard_Boolean IsPlanarFace (const TopoDS_Face& theFace);
private:
TopoDS_Shape myShape;
TopExp_Explorer myFaceExplorer;
TopTools_IndexedDataMapOfShapeListOfShape myEdgeMap;
@ -117,13 +106,6 @@ private:
Standard_Integer myEdge;
Standard_Integer myVertex;
};
#endif // _Prs3d_ShapeTool_HeaderFile

110
src/StdPrs/StdPrs_Isolines.cxx
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@ -231,87 +231,67 @@ void StdPrs_Isolines::addOnTriangulation (const Handle(Poly_Triangulation)& theT
Prs3d_NListOfSequenceOfPnt& theUPolylines,
Prs3d_NListOfSequenceOfPnt& theVPolylines)
{
const Standard_Integer aNbIsoU = theUIsoParams.Length();
const Standard_Integer aNbIsoV = theVIsoParams.Length();
SeqOfVecOfSegments aUPolylines, aVPolylines;
const Poly_Array1OfTriangle& aTriangles = theTriangulation->Triangles();
const TColgp_Array1OfPnt& aNodes = theTriangulation->Nodes();
const TColgp_Array1OfPnt2d& aUVNodes = theTriangulation->UVNodes();
TColStd_Array1OfInteger aUIsoIndexes (1, aNbIsoU);
TColStd_Array1OfInteger aVIsoIndexes (1, aNbIsoV);
aUIsoIndexes.Init (-1);
aVIsoIndexes.Init (-1);
for (Standard_Integer anI = aTriangles.Lower(); anI <= aTriangles.Upper(); ++anI)
for (Standard_Integer anUVIter = 0; anUVIter < 2; ++anUVIter)
{
Standard_Integer aNodeIdxs[3];
aTriangles.Value (anI).Get (aNodeIdxs[0], aNodeIdxs[1],aNodeIdxs[2]);
const gp_Pnt aNodesXYZ[3] = { aNodes.Value (aNodeIdxs[0]),
aNodes.Value (aNodeIdxs[1]),
aNodes.Value (aNodeIdxs[2]) };
const gp_Pnt2d aNodesUV[3] = { aUVNodes.Value (aNodeIdxs[0]),
aUVNodes.Value (aNodeIdxs[1]),
aUVNodes.Value (aNodeIdxs[2]) };
// Evaluate polyline points for u isolines.
for (Standard_Integer anIsoIdx = 1; anIsoIdx <= aNbIsoU; ++anIsoIdx)
const Standard_Boolean isUIso = anUVIter == 0;
const TColStd_SequenceOfReal& anIsoParams = isUIso ? theUIsoParams : theVIsoParams;
const Standard_Integer aNbIsolines = anIsoParams.Length();
if (aNbIsolines == 0)
{
SegOnIso aSegment;
const gp_Lin2d anIsolineUV = isoU (theUIsoParams.Value (anIsoIdx));
// Find intersections with triangle in uv space and its projection on triangulation.
if (!findSegmentOnTriangulation (theSurface, true, anIsolineUV, aNodesXYZ, aNodesUV, aSegment))
{
continue;
}
if (aUIsoIndexes.Value (anIsoIdx) == -1)
{
aUPolylines.Append (new VecOfSegments());
aUIsoIndexes.SetValue (anIsoIdx, aUPolylines.Size());
}
Handle(VecOfSegments) anIsoPnts = aUPolylines.ChangeValue (aUIsoIndexes.Value (anIsoIdx));
if (!theLocation.IsIdentity())
{
aSegment[0].Pnt.Transform (theLocation);
aSegment[1].Pnt.Transform (theLocation);
}
anIsoPnts->Append (aSegment);
continue;
}
// Evaluate polyline points for v isolines.
for (Standard_Integer anIsoIdx = 1; anIsoIdx <= aNbIsoV; ++anIsoIdx)
SeqOfVecOfSegments aPolylines;
TColStd_Array1OfInteger anIsoIndexes (1, aNbIsolines);
anIsoIndexes.Init (-1);
for (Standard_Integer anIsoIdx = 1; anIsoIdx <= aNbIsolines; ++anIsoIdx)
{
SegOnIso aSegment;
const gp_Lin2d anIsolineUV = isoV (theVIsoParams.Value (anIsoIdx));
if (!findSegmentOnTriangulation (theSurface, false, anIsolineUV, aNodesXYZ, aNodesUV, aSegment))
const gp_Lin2d anIsolineUV = isUIso ? isoU (anIsoParams.Value (anIsoIdx)) : isoV (anIsoParams.Value (anIsoIdx));
Handle(VecOfSegments) anIsoPnts;
if (anIsoIndexes.Value (anIsoIdx) != -1)
{
continue;
anIsoPnts = aPolylines.ChangeValue (anIsoIndexes.Value (anIsoIdx));
}
if (aVIsoIndexes.Value (anIsoIdx) == -1)
for (Standard_Integer aTriIter = aTriangles.Lower(); aTriIter <= aTriangles.Upper(); ++aTriIter)
{
aVPolylines.Append (new VecOfSegments());
aVIsoIndexes.SetValue (anIsoIdx, aVPolylines.Size());
}
Standard_Integer aNodeIdxs[3];
aTriangles.Value (aTriIter).Get (aNodeIdxs[0], aNodeIdxs[1],aNodeIdxs[2]);
const gp_Pnt aNodesXYZ[3] = { aNodes.Value (aNodeIdxs[0]),
aNodes.Value (aNodeIdxs[1]),
aNodes.Value (aNodeIdxs[2]) };
const gp_Pnt2d aNodesUV[3] = { aUVNodes.Value (aNodeIdxs[0]),
aUVNodes.Value (aNodeIdxs[1]),
aUVNodes.Value (aNodeIdxs[2]) };
Handle(VecOfSegments) anIsoPnts = aVPolylines.ChangeValue (aVIsoIndexes.Value (anIsoIdx));
if (!theLocation.IsIdentity())
{
aSegment[0].Pnt.Transform (theLocation);
aSegment[1].Pnt.Transform (theLocation);
// Find intersections with triangle in uv space and its projection on triangulation.
SegOnIso aSegment;
if (!findSegmentOnTriangulation (theSurface, isUIso, anIsolineUV, aNodesXYZ, aNodesUV, aSegment))
{
continue;
}
if (anIsoPnts.IsNull())
{
aPolylines.Append (new VecOfSegments());
anIsoIndexes.SetValue (anIsoIdx, aPolylines.Size());
anIsoPnts = aPolylines.ChangeValue (anIsoIndexes.Value (anIsoIdx));
}
if (!theLocation.IsIdentity())
{
aSegment[0].Pnt.Transform (theLocation);
aSegment[1].Pnt.Transform (theLocation);
}
anIsoPnts->Append (aSegment);
}
anIsoPnts->Append (aSegment);
}
sortSegments (aPolylines, isUIso ? theUPolylines : theVPolylines);
}
sortSegments (aUPolylines, theUPolylines);
sortSegments (aVPolylines, theVPolylines);
}
//==================================================================

87
src/StdPrs/StdPrs_WFShape.cxx
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@ -19,6 +19,7 @@
#include <BRepAdaptor_Curve.hxx>
#include <BRepAdaptor_Surface.hxx>
#include <BRepAdaptor_HSurface.hxx>
#include <OSD_Parallel.hxx>
#include <StdPrs_DeflectionCurve.hxx>
#include <StdPrs_ToolTriangulatedShape.hxx>
#include <StdPrs_Isolines.hxx>
@ -41,13 +42,56 @@
#include <TopoDS.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
//! Functor for executing StdPrs_Isolines in parallel threads.
class StdPrs_WFShape_IsoFunctor
{
public:
StdPrs_WFShape_IsoFunctor (Prs3d_NListOfSequenceOfPnt& thePolylinesU,
Prs3d_NListOfSequenceOfPnt& thePolylinesV,
const std::vector<TopoDS_Face>& theFaces,
const Handle(Prs3d_Drawer)& theDrawer,
Standard_Real theShapeDeflection)
: myPolylinesU (thePolylinesU),
myPolylinesV (thePolylinesV),
myFaces (theFaces),
myDrawer (theDrawer),
myShapeDeflection (theShapeDeflection)
{
//
}
void operator()(const Standard_Integer& theIndex) const
{
Prs3d_NListOfSequenceOfPnt aPolylinesU, aPolylinesV;
const TopoDS_Face& aFace = myFaces[theIndex];
StdPrs_Isolines::Add (aFace, myDrawer, myShapeDeflection, aPolylinesU, aPolylinesV);
{
Standard_Mutex::Sentry aLock (myMutex);
myPolylinesU.Append (aPolylinesU);
myPolylinesV.Append (aPolylinesV);
}
}
private:
StdPrs_WFShape_IsoFunctor operator= (StdPrs_WFShape_IsoFunctor& );
private:
Prs3d_NListOfSequenceOfPnt& myPolylinesU;
Prs3d_NListOfSequenceOfPnt& myPolylinesV;
const std::vector<TopoDS_Face>& myFaces;
const Handle(Prs3d_Drawer)& myDrawer;
mutable Standard_Mutex myMutex;
const Standard_Real myShapeDeflection;
};
// =========================================================================
// function : Add
// purpose :
// =========================================================================
void StdPrs_WFShape::Add (const Handle (Prs3d_Presentation)& thePresentation,
const TopoDS_Shape& theShape,
const Handle (Prs3d_Drawer)& theDrawer)
void StdPrs_WFShape::Add (const Handle(Prs3d_Presentation)& thePresentation,
const TopoDS_Shape& theShape,
const Handle(Prs3d_Drawer)& theDrawer,
Standard_Boolean theIsParallel)
{
if (theShape.IsNull())
{
@ -106,14 +150,43 @@ void StdPrs_WFShape::Add (const Handle (Prs3d_Presentation)& thePresentation,
aVPolylinesPtr = &aCommonPolylines;
}
for (aTool.InitFace(); aTool.MoreFace(); aTool.NextFace())
bool isParallelIso = false;
if (theIsParallel)
{
if (aTool.IsPlanarFace() && !theDrawer->IsoOnPlane())
Standard_Integer aNbFaces = 0;
for (TopExp_Explorer aFaceExplorer (theShape, TopAbs_FACE); aFaceExplorer.More(); aFaceExplorer.Next())
{
continue;
++aNbFaces;
}
if (aNbFaces > 1)
{
isParallelIso = true;
std::vector<TopoDS_Face> aFaces (aNbFaces);
aNbFaces = 0;
for (TopExp_Explorer aFaceExplorer (theShape, TopAbs_FACE); aFaceExplorer.More(); aFaceExplorer.Next())
{
const TopoDS_Face& aFace = TopoDS::Face (aFaceExplorer.Current());
if (theDrawer->IsoOnPlane() || !Prs3d_ShapeTool::IsPlanarFace (aFace))
{
aFaces[aNbFaces++] = aFace;
}
}
StdPrs_Isolines::Add (aTool.GetFace(), theDrawer, aShapeDeflection, *aUPolylinesPtr, *aVPolylinesPtr);
StdPrs_WFShape_IsoFunctor anIsoFunctor (*aUPolylinesPtr, *aVPolylinesPtr, aFaces, theDrawer, aShapeDeflection);
OSD_Parallel::For (0, aNbFaces - 1, anIsoFunctor, aNbFaces < 2);
}
}
if (!isParallelIso)
{
for (TopExp_Explorer aFaceExplorer (theShape, TopAbs_FACE); aFaceExplorer.More(); aFaceExplorer.Next())
{
const TopoDS_Face& aFace = TopoDS::Face (aFaceExplorer.Current());
if (theDrawer->IsoOnPlane() || !Prs3d_ShapeTool::IsPlanarFace (aFace))
{
StdPrs_Isolines::Add (aFace, theDrawer, aShapeDeflection, *aUPolylinesPtr, *aVPolylinesPtr);
}
}
}
Prs3d::AddPrimitivesGroup (thePresentation, anIsoAspectU, aUPolylines);

8
src/StdPrs/StdPrs_WFShape.hxx
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@ -33,9 +33,11 @@ public:
//! @param thePresentation [in] the presentation.
//! @param theShape [in] the shape.
//! @param theDrawer [in] the draw settings.
Standard_EXPORT static void Add (const Handle (Prs3d_Presentation)& thePresentation,
const TopoDS_Shape& theShape,
const Handle (Prs3d_Drawer)& theDrawer);
//! @param theIsParallel [in] perform algorithm using multiple threads
Standard_EXPORT static void Add (const Handle(Prs3d_Presentation)& thePresentation,
const TopoDS_Shape& theShape,
const Handle(Prs3d_Drawer)& theDrawer,
Standard_Boolean theIsParallel = Standard_False);
//! Compute free and boundary edges on a triangulation of each face in the given shape.
//! @param theShape [in] the list of triangulated faces