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Draft implementation of LOD API in OCCT:

Browse Source 
- implemented interfaces for LOD at OpenGl, Graphic3d and MeshVS levels;
- simple mechanism of LOD switching was added to OpenGl_Structure::Render method;
- distance to COG metric is temporarily used;
- added commands meshgenlod and meshlod to generate LODs for mesh and its topological representation
  and bind them to its OpenGl structures.
This commit is contained in:
vpa
2015-11-06 07:15:03 +03:00
parent 3b523c4cb2
commit a370cc6537
23 changed files with 1760 additions and 104 deletions
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2
src/Graphic3d/FILES
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@@ -77,6 +77,8 @@ Graphic3d_InitialisationError.hxx
Graphic3d_LevelOfTextureAnisotropy.hxx
Graphic3d_ListIteratorOfListOfShortReal.hxx
Graphic3d_ListOfShortReal.hxx
Graphic3d_LOD.hxx
Graphic3d_LOD.cxx
Graphic3d_MapIteratorOfMapOfStructure.hxx
Graphic3d_MapOfObject.hxx
Graphic3d_MapOfStructure.hxx

8
src/Graphic3d/Graphic3d_CStructure.hxx
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@@ -28,6 +28,7 @@
class Graphic3d_GraphicDriver;
class Graphic3d_StructureManager;
class Graphic3d_LOD;
//! Low-level graphic structure interface
class Graphic3d_CStructure : public Standard_Transient
@@ -112,9 +113,16 @@ public:
//! Create new group within this structure
virtual Handle(Graphic3d_Group) NewGroup (const Handle(Graphic3d_Structure)& theStruct) = 0;
//! Create new LOD within this structure
virtual Handle(Graphic3d_LOD) NewLOD (const Handle(Graphic3d_Structure)& theStruct) = 0;
//! Remove group from this structure
virtual void RemoveGroup (const Handle(Graphic3d_Group)& theGroup) = 0;
virtual Standard_Integer GetDetailLevelsNb() const = 0;
virtual void SetDetailLevelRange (const Standard_Integer theIdOfLOD, const Standard_Real theFrom, const Standard_Real theTo) = 0;
public:
int Id;

68
src/Graphic3d/Graphic3d_LOD.cxx Normal file
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@@ -0,0 +1,68 @@
// Created on: 2015-10-29
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <Graphic3d_LOD.hxx>
//=======================================================================
// function : Destructor
// purpose :
//=======================================================================
Graphic3d_LOD::~Graphic3d_LOD()
{
myGroups.Clear();
myParent.Nullify();
}
//=======================================================================
// function : SetParent
// purpose :
//=======================================================================
void Graphic3d_LOD::SetParent (const Handle(Graphic3d_Structure)& theParent)
{
myParent = theParent;
}
//=======================================================================
// function : SetRange
// purpose :
//=======================================================================
void Graphic3d_LOD::SetRange (const Standard_Real /*theFrom*/, const Standard_Real /*theTo*/)
{
return;
}
//=======================================================================
// function : NewGroup
// purpose :
//=======================================================================
Handle(Graphic3d_Group) Graphic3d_LOD::NewGroup()
{
return NULL;
}
//=======================================================================
// function : ComputeMetrics
// purpose :
//=======================================================================
Standard_Real Graphic3d_LOD::ComputeMetrics (const Handle(Graphic3d_Camera)& theCamera) const
{
if (myParent.IsNull())
return std::numeric_limits<Standard_Real>::max();
Graphic3d_BndBox4f aBndBox = myParent->CStructure()->BoundingBox();
const Graphic3d_Vec4 aCenter = aBndBox.Center();
const gp_Pnt aGpCenter = gp_Pnt (aCenter.x(), aCenter.y(), aCenter.z());
return (theCamera->Eye().Distance (aGpCenter)) / theCamera->Scale();
}

47
src/Graphic3d/Graphic3d_LOD.hxx Normal file
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@@ -0,0 +1,47 @@
// Created on: 2015-10-29
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _Graphic3d_LOD_Header
#define _Graphic3d_LOD_Header
#include <Graphic3d_Camera.hxx>
#include <Graphic3d_SequenceOfGroup.hxx>
#include <Graphic3d_Structure.hxx>
#include <Standard.hxx>
#include <Standard_Macro.hxx>
#include <Standard_Transient.hxx>
class Graphic3d_LOD : public Standard_Transient
{
public:
Standard_EXPORT Graphic3d_LOD() {};
Standard_EXPORT virtual ~Graphic3d_LOD();
Standard_EXPORT virtual void SetRange (const Standard_Real theFrom, const Standard_Real theTo);
Standard_EXPORT virtual Handle(Graphic3d_Group) NewGroup();
Standard_EXPORT Standard_Real ComputeMetrics (const Handle(Graphic3d_Camera)& theCamera) const;
Standard_EXPORT void SetParent (const Handle(Graphic3d_Structure)& theParent);
DEFINE_STANDARD_RTTI (Graphic3d_LOD, Standard_Transient)
protected:
Graphic3d_SequenceOfGroup myGroups;
Handle(Graphic3d_Structure) myParent;
};
DEFINE_STANDARD_HANDLE (Graphic3d_LOD, Standard_Transient)
#endif // _Graphic3d_LOD_Header

27
src/Graphic3d/Graphic3d_Structure.cxx
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@@ -1743,6 +1743,33 @@ Handle(Graphic3d_Group) Graphic3d_Structure::NewGroup()
return myCStructure->NewGroup (this);
}
//=============================================================================
//function : NewLOD
//purpose :
//=============================================================================
Handle(Graphic3d_LOD) Graphic3d_Structure::NewLOD()
{
return myCStructure->NewLOD (this);
}
//=============================================================================
//function : GetDetailLevelsNb
//purpose :
//=============================================================================
Standard_Integer Graphic3d_Structure::GetDetailLevelsNb() const
{
return myCStructure->GetDetailLevelsNb();
}
//=============================================================================
//function : SetDetailLevelRange
//purpose :
//=============================================================================
void Graphic3d_Structure::SetDetailLevelRange (const Standard_Integer theIdOfLOD, const Standard_Real theFrom, const Standard_Real theTo)
{
myCStructure->SetDetailLevelRange (theIdOfLOD, theFrom, theTo);
}
//=============================================================================
//function : Remove
//purpose :

9
src/Graphic3d/Graphic3d_Structure.hxx
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@@ -33,6 +33,7 @@
#include <Graphic3d_ZLayerId.hxx>
#include <Graphic3d_SequenceOfHClipPlane.hxx>
#include <Standard_Real.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColStd_Array2OfReal.hxx>
#include <Graphic3d_SequenceOfGroup.hxx>
#include <Graphic3d_TypeOfConnection.hxx>
@@ -54,6 +55,7 @@ class Graphic3d_AspectFillArea3d;
class Graphic3d_AspectText3d;
class Graphic3d_AspectMarker3d;
class Graphic3d_DataStructureManager;
class Graphic3d_LOD;
class Bnd_Box;
class gp_Pnt;
class Graphic3d_Vector;
@@ -260,6 +262,9 @@ public:
//! Append new group to this structure.
Standard_EXPORT Handle(Graphic3d_Group) NewGroup();
//! Append new LOD to this structure.
Standard_EXPORT Handle(Graphic3d_LOD) NewLOD();
//! Returns the highlight color for the Highlight method
//! with the highlight method TOHM_COLOR or TOHM_BOUNDBOX.
Standard_EXPORT const Quantity_Color& HighlightColor() const;
@@ -492,6 +497,10 @@ public:
//! Returns the low-level structure
const Handle(Graphic3d_CStructure)& CStructure() const;
Standard_EXPORT Standard_Integer GetDetailLevelsNb() const;
Standard_EXPORT void SetDetailLevelRange (const Standard_Integer theIdOfLOD, const Standard_Real theFrom, const Standard_Real theTo);
friend class Graphic3d_Group;

2
src/MeshVS/FILES
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@@ -41,6 +41,8 @@ MeshVS_ElementalColorPrsBuilder.cxx
MeshVS_ElementalColorPrsBuilder.hxx
MeshVS_EntityType.hxx
MeshVS_HArray1OfSequenceOfInteger.hxx
MeshVS_LODDataSource.hxx
MeshVS_LODDataSource.cxx
MeshVS_MapIteratorOfMapOfTwoNodes.hxx
MeshVS_MapOfTwoNodes.hxx
MeshVS_Mesh.cxx

90
src/MeshVS/MeshVS_DataSource.hxx
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@@ -67,21 +67,30 @@ public:
//! NbNodes is number of nodes. It is recommended this parameter to be set to 1 for node.
//! Type is type of node or element (from enumeration). It is recommended this parameter to be set to
//! MeshVS_ET_Node for node.
Standard_EXPORT virtual Standard_Boolean GetGeom (const Standard_Integer ID, const Standard_Boolean IsElement, TColStd_Array1OfReal& Coords, Standard_Integer& NbNodes, MeshVS_EntityType& Type) const = 0;
Standard_EXPORT virtual Standard_Boolean GetGeom (const Standard_Integer ID,
const Standard_Boolean IsElement,
TColStd_Array1OfReal& Coords,
Standard_Integer& NbNodes,
MeshVS_EntityType& Type) const = 0;
//! This method is similar to GetGeom, but returns only element or node type.
Standard_EXPORT virtual Standard_Boolean GetGeomType (const Standard_Integer ID, const Standard_Boolean IsElement, MeshVS_EntityType& Type) const = 0;
Standard_EXPORT virtual Standard_Boolean GetGeomType (const Standard_Integer ID,
const Standard_Boolean IsElement,
MeshVS_EntityType& Type) const = 0;
//! This method returns topology information about 3D-element
//! Returns false if element with ID isn't 3D or because other troubles
Standard_EXPORT virtual Standard_Boolean Get3DGeom (const Standard_Integer ID, Standard_Integer& NbNodes, Handle(MeshVS_HArray1OfSequenceOfInteger)& Data) const;
Standard_EXPORT virtual Standard_Boolean Get3DGeom (const Standard_Integer ID,
Standard_Integer& NbNodes,
Handle(MeshVS_HArray1OfSequenceOfInteger)& Data) const;
//! This method returns pointer which represents element or node data structure.
//! This address will be saved in MeshVS_MeshEntityOwner, so that you can access to data structure fast
//! by the method Owner(). In the redefined method you can return NULL.
//! ID is the numerical identificator of node or element
//! IsElement indicates this ID describe node ( if Standard_False ) or element ( if Standard_True )
Standard_EXPORT virtual Standard_Address GetAddr (const Standard_Integer ID, const Standard_Boolean IsElement) const = 0;
Standard_EXPORT virtual Standard_Address GetAddr (const Standard_Integer ID,
const Standard_Boolean IsElement) const = 0;
//! This method returns information about nodes this element consist of.
//! ID is the numerical identificator of element.
@@ -89,7 +98,9 @@ public:
//! the same as coordinates returned by GetGeom().
//! NbNodes is number of nodes (number of items set in NodeIDs).
//! Returns False if element does not exist
Standard_EXPORT virtual Standard_Boolean GetNodesByElement (const Standard_Integer ID, TColStd_Array1OfInteger& NodeIDs, Standard_Integer& NbNodes) const = 0;
Standard_EXPORT virtual Standard_Boolean GetNodesByElement (const Standard_Integer ID,
TColStd_Array1OfInteger& NodeIDs,
Standard_Integer& NbNodes) const = 0;
//! This method returns map of all nodes the object consist of.
Standard_EXPORT virtual const TColStd_PackedMapOfInteger& GetAllNodes() const = 0;
@@ -105,12 +116,20 @@ public:
//! In the redefined method you can return normal with length more then 1, but in this case
//! the appearance of element will be more bright than usual. For ordinary brightness you must return
//! normal with length 1
Standard_EXPORT virtual Standard_Boolean GetNormal (const Standard_Integer Id, const Standard_Integer Max, Standard_Real& nx, Standard_Real& ny, Standard_Real& nz) const;
Standard_EXPORT virtual Standard_Boolean GetNormal (const Standard_Integer Id,
const Standard_Integer Max,
Standard_Real& nx,
Standard_Real& ny,
Standard_Real& nz) const;
//! This method return normal of node ranknode of face Id,
//! which is using for smooth shading presentation.
//! Returns false if normal isn't defined.
Standard_EXPORT virtual Standard_Boolean GetNodeNormal (const Standard_Integer ranknode, const Standard_Integer ElementId, Standard_Real& nx, Standard_Real& ny, Standard_Real& nz) const;
Standard_EXPORT virtual Standard_Boolean GetNodeNormal (const Standard_Integer ranknode,
const Standard_Integer ElementId,
Standard_Real& nx,
Standard_Real& ny,
Standard_Real& nz) const;
//! This method puts components of normal vectors at each node of a mesh face (at each face of a mesh volume)
//! into the output array.
@@ -123,13 +142,18 @@ public:
//! volume: normals to all faces of the volume are computed (not for each node!).
//! MaxNodes is maximal number of nodes an element can consist of.
//! Normals contains the result.
Standard_EXPORT virtual Standard_Boolean GetNormalsByElement (const Standard_Integer Id, const Standard_Boolean IsNodal, const Standard_Integer MaxNodes, Handle(TColStd_HArray1OfReal)& Normals) const;
Standard_EXPORT virtual Standard_Boolean GetNormalsByElement (const Standard_Integer Id,
const Standard_Boolean IsNodal,
const Standard_Integer MaxNodes,
Handle(TColStd_HArray1OfReal)& Normals) const;
//! This method returns map of all groups the object contains.
Standard_EXPORT virtual void GetAllGroups (TColStd_PackedMapOfInteger& Ids) const;
//! This method returns map of all group elements.
Standard_EXPORT virtual Standard_Boolean GetGroup (const Standard_Integer Id, MeshVS_EntityType& Type, TColStd_PackedMapOfInteger& Ids) const;
Standard_EXPORT virtual Standard_Boolean GetGroup (const Standard_Integer Id,
MeshVS_EntityType& Type,
TColStd_PackedMapOfInteger& Ids) const;
//! This method returns pointer which represents group data structure.
//! This address will be saved in MeshVS_MeshOwner, so that you can access to data structure fast
@@ -156,7 +180,13 @@ public:
//! Returns True if something is detected.
//! It should be redefined if the advanced mesh selection is
//! activated. Default implementation returns False.
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs, const Standard_Real X, const Standard_Real Y, const Standard_Real aTol, Handle(TColStd_HPackedMapOfInteger)& Nodes, Handle(TColStd_HPackedMapOfInteger)& Elements, Standard_Real& DMin);
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs,
const Standard_Real X,
const Standard_Real Y,
const Standard_Real aTol,
Handle(TColStd_HPackedMapOfInteger)& Nodes,
Handle(TColStd_HPackedMapOfInteger)& Elements,
Standard_Real& DMin);
//! Returns maps of entities (nodes and elements) detected
//! by mouse selection with rectangular box (XMin, YMin, XMax, YMax)
@@ -164,7 +194,14 @@ public:
//! Returns True if something is detected.
//! It should be redefined if the advanced mesh selection is
//! activated. Default implementation returns False.
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs, const Standard_Real XMin, const Standard_Real YMin, const Standard_Real XMax, const Standard_Real YMax, const Standard_Real aTol, Handle(TColStd_HPackedMapOfInteger)& Nodes, Handle(TColStd_HPackedMapOfInteger)& Elements);
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs,
const Standard_Real XMin,
const Standard_Real YMin,
const Standard_Real XMax,
const Standard_Real YMax,
const Standard_Real aTol,
Handle(TColStd_HPackedMapOfInteger)& Nodes,
Handle(TColStd_HPackedMapOfInteger)& Elements);
//! Returns maps of entities (nodes and elements) detected
//! by mouse selection with the polyline <Polyline>
@@ -172,7 +209,12 @@ public:
//! Returns True if something is detected.
//! It should be redefined if the advanced mesh selection is
//! activated. Default implementation returns False.
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs, const TColgp_Array1OfPnt2d& Polyline, const Bnd_Box2d& aBox, const Standard_Real aTol, Handle(TColStd_HPackedMapOfInteger)& Nodes, Handle(TColStd_HPackedMapOfInteger)& Elements);
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs,
const TColgp_Array1OfPnt2d& Polyline,
const Bnd_Box2d& aBox,
const Standard_Real aTol,
Handle(TColStd_HPackedMapOfInteger)& Nodes,
Handle(TColStd_HPackedMapOfInteger)& Elements);
//! Filter out the maps of mesh entities so as to keep
//! only the entities that are allowed to be selected
@@ -180,29 +222,11 @@ public:
//! Returns True if any of the maps has been changed.
//! It should be redefined if the advanced mesh selection is
//! activated. Default implementation returns False.
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs, Handle(TColStd_HPackedMapOfInteger)& Nodes, Handle(TColStd_HPackedMapOfInteger)& Elements);
Standard_EXPORT virtual Standard_Boolean GetDetectedEntities (const Handle(MeshVS_Mesh)& Prs,
Handle(TColStd_HPackedMapOfInteger)& Nodes,
Handle(TColStd_HPackedMapOfInteger)& Elements);
DEFINE_STANDARD_RTTI(MeshVS_DataSource,MMgt_TShared)
protected:
private:
};
#endif // _MeshVS_DataSource_HeaderFile

684
src/MeshVS/MeshVS_LODDataSource.cxx Normal file
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@@ -0,0 +1,684 @@
// Created on: 2015-10-23
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <MeshVS_LODDataSource.hxx>
#include <Graphic3d_ArrayOfPoints.hxx>
#include <Graphic3d_ArrayOfTriangles.hxx>
#include <Graphic3d_ArrayOfSegments.hxx>
#include <Graphic3d_LOD.hxx>
#include <MeshVS_Drawer.hxx>
#include <MeshVS_DrawerAttribute.hxx>
#include <MeshVS_Mesh.hxx>
#include <MeshVS_MapOfTwoNodes.hxx>
#include <MeshVS_MeshPrsBuilder.hxx>
#include <MeshVS_SymmetricPairHasher.hxx>
#include <MeshVS_Tool.hxx>
#include <Prs3d_Presentation.hxx>
#include <Prs3d_Root.hxx>
#include <TColStd_HPackedMapOfInteger.hxx>
#include <TColStd_MapIteratorOfPackedMapOfInteger.hxx>
#include <TColgp_SequenceOfXYZ.hxx>
#include <StlMesh_SequenceOfMeshTriangle.hxx>
#include <StlMesh_MeshTriangle.hxx>
//=======================================================================
// function : MeshVS_LODDataSource
// purpose :
//=======================================================================
MeshVS_LODDataSource::MeshVS_LODDataSource (const Handle(StlMesh_Mesh)& theMesh)
: myTriangles (1, theMesh->Triangles().Length()),
myNodes (1, theMesh->Vertices().Length())
{
if (theMesh.IsNull())
return;
const TColgp_SequenceOfXYZ& aVerts = theMesh->Vertices();
for (Standard_Integer aNodeIdx = 1; aNodeIdx <= aVerts.Length(); ++aNodeIdx)
{
myNodeIdxs.Add (aNodeIdx);
myNodes.ChangeValue (aNodeIdx) = aVerts (aNodeIdx);
}
const StlMesh_SequenceOfMeshTriangle& aTriangles = theMesh->Triangles();
for (Standard_Integer aTrgIdx = 1; aTrgIdx <= aTriangles.Length(); ++aTrgIdx)
{
myTriangleIdxs.Add (aTrgIdx);
const Handle(StlMesh_MeshTriangle)& aTriangle = aTriangles.Value (aTrgIdx);
Standard_Integer aNodeIdxs[3];
Standard_Real aNormalX, aNormalY, aNormalZ;
aTriangle->GetVertexAndOrientation (aNodeIdxs[0], aNodeIdxs[1], aNodeIdxs[2], aNormalX, aNormalY, aNormalZ);
myTriangles.ChangeValue (aTrgIdx) = Poly_Triangle (aNodeIdxs[0], aNodeIdxs[1], aNodeIdxs[2]);
}
}
//=======================================================================
// function : GetGeom
// purpose : Returns full info about the entity according to the index and type of element given
//=======================================================================
Standard_Boolean MeshVS_LODDataSource::GetGeom (const Standard_Integer theId,
const Standard_Boolean theIsElement,
TColStd_Array1OfReal& theCoords,
Standard_Integer& theNodesNb,
MeshVS_EntityType& theEntityType) const
{
if (theId < 1)
return Standard_False;
if (theIsElement)
{
if (theId > myTriangleIdxs.Extent() || theCoords.Length() < 9)
return Standard_False;
Standard_Integer aNode1, aNode2, aNode3;
myTriangles.Value (theId).Get (aNode1, aNode2, aNode3);
gp_Pnt aPnts[3] = { myNodes.Value (aNode1),
myNodes.Value (aNode2),
myNodes.Value (aNode3) };
for (Standard_Integer aPntIdx = 0, anIdx = 1; aPntIdx < 3; ++aPntIdx)
{
for (Standard_Integer aCoordIdx = 0; aCoordIdx < 3; aCoordIdx++)
{
theCoords (anIdx++) = aPnts[aPntIdx].XYZ().GetData()[aCoordIdx];
}
}
theNodesNb = 3;
theEntityType = MeshVS_ET_Face;
return Standard_True;
}
else
{
if (theId > myNodeIdxs.Extent() || theCoords.Length() < 3)
return Standard_False;
const gp_Pnt& aNode = myNodes.Value (theId);
theCoords (1) = aNode.X();
theCoords (2) = aNode.Y();
theCoords (3) = aNode.Z();
theNodesNb = 1;
theEntityType = MeshVS_ET_Node;
return Standard_True;
}
}
//=======================================================================
// function : GetGeomType
// purpose : Returns type of geometry according to the index and type of element given
//=======================================================================
Standard_Boolean MeshVS_LODDataSource::GetGeomType (const Standard_Integer /*theId*/,
const Standard_Boolean theIsElement,
MeshVS_EntityType& theEntityType) const
{
theEntityType = theIsElement ? MeshVS_ET_Face : MeshVS_ET_Node;
return Standard_True;
}
//=======================================================================
// function : GetAddr
// purpose :
//=======================================================================
Standard_Address MeshVS_LODDataSource::GetAddr (const Standard_Integer /*theId*/,
const Standard_Boolean /*theIsElement*/) const
{
return NULL;
}
//=======================================================================
// function : GetNodesByElement
// purpose : Returns nodes forming a triangle with id theId
//=======================================================================
Standard_Boolean MeshVS_LODDataSource::GetNodesByElement (const Standard_Integer theId,
TColStd_Array1OfInteger& theNodeIds,
Standard_Integer& theNodesNb) const
{
if (theId < 1 || theId > myTriangleIdxs.Extent() || theNodeIds.Length() < 3)
return Standard_False;
const Standard_Integer aLowerIdx = theNodeIds.Lower();
myTriangles.Value (theId).Get (theNodeIds.ChangeValue (aLowerIdx),
theNodeIds.ChangeValue (aLowerIdx + 1),
theNodeIds.ChangeValue (aLowerIdx + 2));
theNodesNb = 3;
return Standard_True;
}
//=======================================================================
// function : GetAllNodes
// purpose : This method makes storing usless map excusable
//=======================================================================
const TColStd_PackedMapOfInteger& MeshVS_LODDataSource::GetAllNodes() const
{
return myNodeIdxs;
}
//=======================================================================
// function : GetAllElements
// purpose : This method makes storing usless map excusable
//=======================================================================
const TColStd_PackedMapOfInteger& MeshVS_LODDataSource::GetAllElements() const
{
return myTriangleIdxs;
}
//=======================================================================
// function : ComputePrs
// purpose :
//=======================================================================
void MeshVS_LODDataSource::ComputePrs (const Handle(AIS_InteractiveObject) theMesh)
{
Handle(MeshVS_Mesh) aMesh = Handle(MeshVS_Mesh)::DownCast (theMesh);
if (aMesh.IsNull())
return;
Standard_Boolean hasNodes = !myNodeIdxs.IsEmpty();
Standard_Boolean hasTrgs = !myTriangleIdxs.IsEmpty();
Handle(Prs3d_Presentation) aMainPrs = theMesh->Presentation();
const Standard_Integer aDispMode = theMesh->DisplayMode();
//if (hasNodes)
//{
// Standard_Boolean hasSelectFlag = ((aDispMode & MeshVS_DMF_SelectionPrs) != 0);
// Standard_Boolean hasHilightFlag = ((aDispMode & MeshVS_DMF_HilightPrs) != 0);
// Standard_Real aCoordsBuf[3];
// TColStd_Array1OfReal aCoords (*aCoordsBuf, 1, 3);
// Standard_Integer aNodesNb;
// MeshVS_EntityType aType;
// TColStd_PackedMapOfInteger anIDs;
// anIDs.Assign (myNodeIdxs);
// if (!hasSelectFlag && !hasHilightFlag)
// {
// // subtract the hidden nodes and ids to exclude (to minimize allocated memory)
// Handle(TColStd_HPackedMapOfInteger) aHiddenNodes = aMesh->GetHiddenNodes();
// if (!aHiddenNodes.IsNull())
// anIDs.Subtract (aHiddenNodes->Map());
// }
// Standard_Integer aSize = anIDs.Extent();
// if (aSize > 0)
// {
// Handle(Graphic3d_ArrayOfPoints) aNodePoints = new Graphic3d_ArrayOfPoints (aSize);
// Standard_Integer aPntsNb = 0;
// for (TColStd_MapIteratorOfPackedMapOfInteger aNodeIdxsIter (myNodeIdxs); aNodeIdxsIter.More(); aNodeIdxsIter.Next())
// {
// const Standard_Integer aKey = aNodeIdxsIter.Key();
// if (GetGeom (aKey, Standard_False, aCoords, aNodesNb, aType))
// {
// aPntsNb++;
// aNodePoints->AddVertex (aCoords(1), aCoords(2), aCoords(3));
// }
// }
// if (aPntsNb > 0)
// {
// Handle(Graphic3d_LOD) aNewLod = Prs3d_Root::NewLOD (aMainPrs);
// Handle(Graphic3d_Group) aLODGroup = aNewLod->NewGroup();
// aLODGroup->AddPrimitiveArray (aNodePoints);
// }
// return;
// }
//}
if (hasTrgs)
{
Standard_Integer aMaxNodesNb;
Handle(MeshVS_MeshPrsBuilder) aBuilder = Handle(MeshVS_MeshPrsBuilder)::DownCast (aMesh->GetBuilder (1));
if (aBuilder.IsNull())
return;
Handle(MeshVS_Drawer) aDrawer = aBuilder->GetDrawer();
if (aDrawer.IsNull() ||
!aDrawer->GetInteger (MeshVS_DA_MaxFaceNodes, aMaxNodesNb) ||
aMaxNodesNb <= 0)
return;
//----------- extract useful display mode flags ----------
Standard_Integer aDispStatus = (aDispMode & aBuilder->GetFlags());
if ((aDispStatus & MeshVS_DMF_DeformedMask) != 0)
{
aDispStatus /= MeshVS_DMF_DeformedPrsWireFrame;
// This transformation turns deformed mesh flags to real display modes
}
aDispStatus &= MeshVS_DMF_OCCMask;
//--------------------------------------------------------
Standard_Real aShrinkCoef;
aDrawer->GetDouble (MeshVS_DA_ShrinkCoeff, aShrinkCoef);
const Standard_Boolean isWireframe = aDispMode == MeshVS_DMF_WireFrame;
Standard_Boolean isShading = aDispMode == MeshVS_DMF_Shading;
Standard_Boolean isShrink = aDispMode == MeshVS_DMF_Shrink;
const Standard_Boolean hasHilightFlag = (aDispStatus & MeshVS_DMF_HilightPrs) != 0;
const Standard_Boolean hasSelFlag =(aDispStatus & MeshVS_DMF_SelectionPrs) != 0;
Standard_Boolean isMeshSmoothShading = Standard_False;
Standard_Boolean isMeshReflect, isMeshAllowOverlap, isReflect;
aDrawer->GetBoolean (MeshVS_DA_Reflection, isMeshReflect);
aDrawer->GetBoolean (MeshVS_DA_IsAllowOverlapped, isMeshAllowOverlap);
isReflect = isMeshReflect && !hasHilightFlag;
aDrawer->GetBoolean (MeshVS_DA_SmoothShading, isMeshSmoothShading);
// display mode for highlighted prs of groups
isShrink = isShrink && !hasHilightFlag;
isShading = isShading || hasHilightFlag;
Graphic3d_MaterialAspect aMatAspect;
aDrawer->GetMaterial (MeshVS_DA_FrontMaterial, aMatAspect);
if (!isReflect)
{
aMatAspect.SetReflectionModeOff(Graphic3d_TOR_AMBIENT);
aMatAspect.SetReflectionModeOff(Graphic3d_TOR_DIFFUSE);
aMatAspect.SetReflectionModeOff(Graphic3d_TOR_SPECULAR);
aMatAspect.SetReflectionModeOff(Graphic3d_TOR_EMISSION);
}
Handle(Graphic3d_AspectFillArea3d ) aFill = MeshVS_Tool::CreateAspectFillArea3d (aDrawer, aMatAspect);
Handle(Graphic3d_AspectLine3d ) aBeam = MeshVS_Tool::CreateAspectLine3d (aDrawer);
const Standard_Boolean isOverlapControl =
!isMeshAllowOverlap && (isWireframe || isShading) && !hasSelFlag;
// subtract the hidden elements and ids to exclude (to minimize allocated memory)
TColStd_PackedMapOfInteger anIDs;
anIDs.Assign (myTriangleIdxs);
Handle(TColStd_HPackedMapOfInteger) aHiddenElems = aMesh->GetHiddenElems();
if (!aHiddenElems.IsNull())
anIDs.Subtract (aHiddenElems->Map());
Handle(MeshVS_HArray1OfSequenceOfInteger) aTopo;
Standard_Boolean toShowEdges = Standard_True;
aDrawer->GetBoolean (MeshVS_DA_ShowEdges, toShowEdges);
toShowEdges = isWireframe || toShowEdges;
Standard_Integer* aNodesBuf = (Standard_Integer*)alloca (aMaxNodesNb * sizeof (Standard_Integer));
Standard_Real* aCoordsBuf = (Standard_Real*)alloca (3 * aMaxNodesNb * sizeof (Standard_Real));
TColStd_Array1OfInteger aNodes (*aNodesBuf, 1, aMaxNodesNb);
TColStd_Array1OfReal aCoords (*aCoordsBuf, 1, 3 * aMaxNodesNb);
Standard_Integer aNbFacePrimitives = 0;
Standard_Integer aNbVolmPrimitives = 0;
Standard_Integer aNbEdgePrimitives = 0;
Standard_Integer aNbLinkPrimitives = 0;
MeshVS_EntityType aType;
TColStd_MapIteratorOfPackedMapOfInteger anIdxIter (anIDs);
for (anIdxIter.Reset(); anIdxIter.More(); anIdxIter.Next())
{
Standard_Integer aNbNodes = 0;
if (!GetGeom (anIdxIter.Key(), Standard_True, aCoords, aNbNodes, aType))
continue;
if (aType == MeshVS_ET_Volume)
{
if (Get3DGeom (anIdxIter.Key(), aNbNodes, aTopo))
{
for (Standard_Integer aFaceIdx = aTopo->Lower(); aFaceIdx <= aTopo->Upper(); ++aFaceIdx)
{
const TColStd_SequenceOfInteger& aFaceNodes = aTopo->Value(aFaceIdx);
if (toShowEdges) // add edge segments
{
aNbEdgePrimitives += aFaceNodes.Length();
}
if (isShading || isShrink) // add volumetric cell triangles
{
if (!hasSelFlag)
aNbVolmPrimitives += aFaceNodes.Length() - 2;
}
}
}
}
else if (aType == MeshVS_ET_Link)
{
if (toShowEdges)
{
aNbLinkPrimitives += 1; // add link segment
}
}
else if (aType == MeshVS_ET_Face)
{
if (toShowEdges)
{
aNbEdgePrimitives += aNbNodes; // add edge segments
}
if (!isOverlapControl || isShading)
{
if ((isShading || isShrink) && !hasSelFlag)
{
aNbFacePrimitives += aNbNodes - 2; // add face triangles
}
}
}
}
// Here we do not use indices arrays because they are not effective for some mesh
// drawing modes: shrinking mode (displaces the vertices inside the polygon), 3D
// cell rendering (normal interpolation is not always applicable - flat shading),
// elemental coloring (color interpolation is impossible)
Handle(Graphic3d_ArrayOfTriangles) aVolmTriangles =
new Graphic3d_ArrayOfTriangles (aNbVolmPrimitives * 3, 0, isReflect);
Handle(Graphic3d_ArrayOfTriangles) aFaceTriangles =
new Graphic3d_ArrayOfTriangles (aNbFacePrimitives * 3, 0, isReflect);
Handle(Graphic3d_ArrayOfSegments) aLinkSegments;
Handle(Graphic3d_ArrayOfSegments) aEdgeSegments;
if (toShowEdges)
{
aLinkSegments = new Graphic3d_ArrayOfSegments (aNbLinkPrimitives * 2);
aEdgeSegments = new Graphic3d_ArrayOfSegments (aNbEdgePrimitives * 2);
}
TColStd_PackedMapOfInteger aCustomElements;
MeshVS_MapOfTwoNodes aLinkNodes;
Quantity_Color anOldEdgeColor;
Quantity_Color anEdgeColor;
Quantity_Color anIntColor;
Aspect_InteriorStyle anIntType;
Aspect_TypeOfLine aLine;
Standard_Real aWidth;
aFill->Values (anIntType, anIntColor, anEdgeColor, aLine, aWidth);
// Forbid drawings of edges which overlap with some links
if (toShowEdges && isOverlapControl)
{
for (anIdxIter.Reset(); anIdxIter.More(); anIdxIter.Next())
{
if (GetGeomType (anIdxIter.Key(), Standard_True, aType) && aType == MeshVS_ET_Link)
{
Standard_Integer aNbNodes;
if (GetNodesByElement (anIdxIter.Key(), aNodes, aNbNodes) && aNbNodes == 2)
{
aLinkNodes.Add (MeshVS_TwoNodes (aNodes(1), aNodes(2)));
}
}
}
}
NCollection_Map<MeshVS_NodePair, MeshVS_SymmetricPairHasher> aSegmentMap;
for (anIdxIter.Reset(); anIdxIter.More(); anIdxIter.Next())
{
const Standard_Integer aKey = anIdxIter.Key();
Standard_Integer NbNodes;
if (!GetGeom (aKey, Standard_True, aCoords, NbNodes, aType))
continue;
if (!GetNodesByElement (aKey, aNodes, NbNodes))
continue;
switch (aType)
{
case MeshVS_ET_Volume:
{
if (Get3DGeom (aKey, NbNodes, aTopo))
{
// Add wire-frame presentation (draw edges for shading mode as well)
if (toShowEdges)
{
aBuilder->AddVolumePrs (aTopo, aCoords, NbNodes,
aEdgeSegments, isReflect,
isShrink, hasSelFlag,
aShrinkCoef);
}
// Add shading presentation
if ((isShading || isShrink) && !hasSelFlag)
{
aBuilder->AddVolumePrs (aTopo, aCoords, NbNodes,
aVolmTriangles, isReflect,
isShrink, hasSelFlag,
aShrinkCoef);
}
}
}
break;
case MeshVS_ET_Link:
{
if (toShowEdges)
{
aBuilder->AddLinkPrs (aCoords, aLinkSegments, isShrink || hasSelFlag, aShrinkCoef);
}
}
break;
case MeshVS_ET_Face:
{
if (toShowEdges && isOverlapControl)
{
Standard_Integer Last = 0;
MeshVS_TwoNodes aTwoNodes (aNodes(1));
for (Standard_Integer i = 1; i <= NbNodes; ++i)
{
if (i > 1)
aTwoNodes.First = aTwoNodes.Second;
aTwoNodes.Second = (i < NbNodes) ? aNodes (i + 1) : aNodes (1);
if (aLinkNodes.Contains (aTwoNodes))
{
for (Standard_Integer aNodeIdx = Last + 1; aNodeIdx < i; ++aNodeIdx)
{
const Standard_Integer aNextIdx = aNodeIdx + 1;
aEdgeSegments->AddVertex (
aCoords (3 * aNodeIdx - 2), aCoords (3 * aNodeIdx - 1), aCoords (3 * aNodeIdx));
aEdgeSegments->AddVertex(
aCoords (3 * aNextIdx - 2), aCoords (3 * aNextIdx - 1), aCoords (3 * aNextIdx));
}
Last = i;
}
}
if (NbNodes - Last > 0)
{
for (Standard_Integer aNodeIdx = Last; aNodeIdx < NbNodes; ++aNodeIdx)
{
const Standard_Integer aNextIdx = (aNodeIdx + 1) % NbNodes;
const MeshVS_NodePair aSegment (aNodes (aNodeIdx + 1), aNodes (aNextIdx + 1));
if (!aSegmentMap.Contains (aSegment))
{
aEdgeSegments->AddVertex (aCoords (3 * aNodeIdx + 1),
aCoords (3 * aNodeIdx + 2),
aCoords (3 * aNodeIdx + 3));
aEdgeSegments->AddVertex (aCoords (3 * aNextIdx + 1),
aCoords (3 * aNextIdx + 2),
aCoords (3 * aNextIdx + 3));
aSegmentMap.Add (aSegment);
}
}
}
}
if (!isOverlapControl || isShading)
{
if (!isOverlapControl && toShowEdges)
{
aBuilder->AddFaceWirePrs (aCoords, NbNodes, aEdgeSegments, isShrink || hasSelFlag, aShrinkCoef);
}
if ((isShading || isShrink) && !hasSelFlag)
{
aBuilder->AddFaceSolidPrs (this, aKey, aCoords, NbNodes, aMaxNodesNb, aFaceTriangles, isReflect,
isShrink || hasSelFlag, aShrinkCoef, isMeshSmoothShading);
}
}
}
break;
default:
aCustomElements.Add (aKey);
}
}
if (isShrink)
{
anOldEdgeColor = anEdgeColor;
aFill->SetEdgeColor (Quantity_NOC_BLACK);
}
Standard_Boolean isSupressBackFaces = Standard_False;
if (!aDrawer.IsNull())
{
aDrawer->GetBoolean (MeshVS_DA_SupressBackFaces, isSupressBackFaces);
}
drawArrays (aMainPrs, aFaceTriangles, aEdgeSegments, aLinkSegments, aVolmTriangles,
!toShowEdges, hasSelFlag, isSupressBackFaces, aFill, aBeam);
}
}
//================================================================
// Function : DrawArrays
// Purpose :
//================================================================
void MeshVS_LODDataSource::drawArrays (const Handle(Prs3d_Presentation)& theBasePrs,
const Handle(Graphic3d_ArrayOfPrimitives)& thePolygons,
const Handle(Graphic3d_ArrayOfPrimitives)& theLines,
const Handle(Graphic3d_ArrayOfPrimitives)& theLinkLines,
const Handle(Graphic3d_ArrayOfPrimitives)& theVolumesInShad,
const Standard_Boolean theIsPolygonsEdgesOff,
const Standard_Boolean theIsSelected,
const Standard_Boolean theIsSupressBackFaces,
const Handle(Graphic3d_AspectFillArea3d)& theFillAsp,
const Handle(Graphic3d_AspectLine3d)& theLineAsp) const
{
if (theFillAsp.IsNull())
return;
Standard_Boolean isFacePolygons = (!thePolygons.IsNull() && thePolygons->ItemNumber() > 0),
isVolumePolygons = (!theVolumesInShad.IsNull() && theVolumesInShad->ItemNumber() > 0),
isPolygons = isFacePolygons || isVolumePolygons,
isPolylines = (!theLines.IsNull() && theLines->ItemNumber() > 0),
isLinkPolylines = (!theLinkLines.IsNull() && theLinkLines->ItemNumber() > 0);
Aspect_InteriorStyle aStyle;
Quantity_Color anIntColor, aBackColor, anEdgeColor;
Aspect_TypeOfLine aType;
Standard_Real aWidth;
Handle(Graphic3d_LOD) aNewLod = Prs3d_Root::NewLOD (theBasePrs);
theFillAsp->Values (aStyle, anIntColor, aBackColor, anEdgeColor, aType, aWidth);
if (isPolygons && theFillAsp->FrontMaterial().Transparency() < 0.01)
{
Handle (Graphic3d_Group) aGroup = aNewLod->NewGroup();
theFillAsp->SetEdgeOff();
if (anIntColor != aBackColor)
theFillAsp->SetDistinguishOn();
else
theFillAsp->SetDistinguishOff();
aGroup->SetClosed (theIsSupressBackFaces);
Handle(Graphic3d_AspectFillArea3d) aFillAsp = new Graphic3d_AspectFillArea3d (*(theFillAsp.operator->()));
if (theIsSupressBackFaces)
{
aFillAsp->SuppressBackFace();
}
aGroup->SetPrimitivesAspect (aFillAsp);
if (isFacePolygons)
{
aGroup->AddPrimitiveArray (thePolygons);
}
if (isVolumePolygons)
{
aGroup->AddPrimitiveArray (theVolumesInShad);
}
}
if (isPolylines && !theIsPolygonsEdgesOff)
{
Handle (Graphic3d_Group) aLGroup = aNewLod->NewGroup();
theFillAsp->SetEdgeOff();
if (theIsSelected)
aLGroup->SetPrimitivesAspect (theLineAsp);
else
{
aLGroup->SetPrimitivesAspect (theFillAsp);
aLGroup->SetPrimitivesAspect (new Graphic3d_AspectLine3d (anEdgeColor, Aspect_TOL_SOLID, aWidth));
}
aLGroup->AddPrimitiveArray (theLines);
theFillAsp->SetEdgeOn();
}
if (isLinkPolylines)
{
Handle (Graphic3d_Group) aBeamGroup = aNewLod->NewGroup();
theFillAsp->SetEdgeOff();
if (!theIsSelected)
aBeamGroup->SetPrimitivesAspect (theFillAsp);
aBeamGroup->SetPrimitivesAspect (theLineAsp);
aBeamGroup->AddPrimitiveArray (theLinkLines);
theFillAsp->SetEdgeOn();
}
if (isPolygons && theFillAsp->FrontMaterial().Transparency() >= 0.01)
{
Handle (Graphic3d_Group) aGroup = aNewLod->NewGroup();
theFillAsp->SetEdgeOff();
if (anIntColor != aBackColor)
theFillAsp->SetDistinguishOn();
else
theFillAsp->SetDistinguishOff();
aGroup->SetClosed (theIsSupressBackFaces);
Handle(Graphic3d_AspectFillArea3d) aFillAsp = new Graphic3d_AspectFillArea3d (*(theFillAsp.operator->()));
if (theIsSupressBackFaces)
{
aFillAsp->SuppressBackFace();
}
aGroup->SetPrimitivesAspect (aFillAsp);
if (isFacePolygons)
{
aGroup->AddPrimitiveArray (thePolygons);
}
if (isVolumePolygons)
{
aGroup->AddPrimitiveArray (theVolumesInShad);
}
}
}

107
src/MeshVS/MeshVS_LODDataSource.hxx Normal file
View File

@@ -0,0 +1,107 @@
// Created on: 2015-10-23
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _MeshVS_LODDataSource_Header
#define _MeshVS_LODDataSource_Header
#include <AIS_InteractiveObject.hxx>
#include <MeshVS_DataSource.hxx>
#include <Poly_Array1OfTriangle.hxx>
#include <Poly_Triangle.hxx>
#include <StlMesh_Mesh.hxx>
//! TODO: VPA: think how to avoid copying mesh data. Now it is done for returning useless maps
//! in GetAllElements() and GetAllNodes() because they must return const links. Moreover,
//! copying data allows to avoid cases when indexation in Poly_Triangluation inner
//! arrays starts from arbitrary numbers (if it is really possible).
class MeshVS_LODDataSource : public MeshVS_DataSource
{
public:
Standard_EXPORT MeshVS_LODDataSource (const Handle(StlMesh_Mesh)& theMesh);
Standard_EXPORT virtual ~MeshVS_LODDataSource() {};
//! Returns geometry information about node or element
//! ID is the numerical identificator of node or element
//! IsElement indicates this ID describe node ( if Standard_False ) or element ( if Standard_True )
//! Coords is an array of co-ordinates of node(s).
//! For node it is only 3 numbers: X, Y, Z in the strict order
//! For element it is 3*n numbers, where n is number of this element vertices
//! The order is strict also: X1, Y1, Z1, X2,...., where Xi, Yi, Zi are co-ordinates of vertices
//! NbNodes is number of nodes. It is recommended this parameter to be set to 1 for node.
//! Type is type of node or element (from enumeration). It is recommended this parameter to be set to
//! MeshVS_ET_Node for node.
Standard_EXPORT virtual Standard_Boolean GetGeom (const Standard_Integer theId,
const Standard_Boolean theIsElement,
TColStd_Array1OfReal& theCoords,
Standard_Integer& theNodesNb,
MeshVS_EntityType& theEntityType) const Standard_OVERRIDE;
//! This method is similar to GetGeom, but returns only element or node type.
Standard_EXPORT virtual Standard_Boolean GetGeomType (const Standard_Integer theId,
const Standard_Boolean theIsElement,
MeshVS_EntityType& theEntityType) const Standard_OVERRIDE;
//! This method returns pointer which represents element or node data structure.
//! This address will be saved in MeshVS_MeshEntityOwner, so that you can access to data structure fast
//! by the method Owner(). In the redefined method you can return NULL.
//! ID is the numerical identificator of node or element
//! IsElement indicates this ID describe node ( if Standard_False ) or element ( if Standard_True )
Standard_EXPORT virtual Standard_Address GetAddr (const Standard_Integer theId,
const Standard_Boolean theIsElement) const Standard_OVERRIDE;
//! This method returns information about nodes this element consist of.
//! ID is the numerical identificator of element.
//! NodeIDs is the output array of nodes IDs in correct order,
//! the same as coordinates returned by GetGeom().
//! NbNodes is number of nodes (number of items set in NodeIDs).
//! Returns False if element does not exist
Standard_EXPORT virtual Standard_Boolean GetNodesByElement (const Standard_Integer theId,
TColStd_Array1OfInteger& theNodeIds,
Standard_Integer& theNodesNb) const Standard_OVERRIDE;
//! This method returns map of all nodes the object consist of.
Standard_EXPORT virtual const TColStd_PackedMapOfInteger& GetAllNodes() const Standard_OVERRIDE;
//! This method returns map of all elements the object consist of.
Standard_EXPORT virtual const TColStd_PackedMapOfInteger& GetAllElements() const Standard_OVERRIDE;
Standard_EXPORT void ComputePrs (const Handle(AIS_InteractiveObject) theMesh);
DEFINE_STANDARD_RTTI (MeshVS_LODDataSource, MeshVS_DataSource)
protected:
void drawArrays (const Handle(Prs3d_Presentation)& theBasePrs,
const Handle(Graphic3d_ArrayOfPrimitives)& thePolygons,
const Handle(Graphic3d_ArrayOfPrimitives)& theLines,
const Handle(Graphic3d_ArrayOfPrimitives)& theLinkLines,
const Handle(Graphic3d_ArrayOfPrimitives)& theVolumesInShad,
const Standard_Boolean theIsPolygonsEdgesOff,
const Standard_Boolean theIsSelected,
const Standard_Boolean theIsSupressBackFaces,
const Handle(Graphic3d_AspectFillArea3d)& theFillAsp,
const Handle(Graphic3d_AspectLine3d)& theLineAsp) const;
private:
TColStd_PackedMapOfInteger myNodeIdxs;
TColStd_PackedMapOfInteger myTriangleIdxs;
TColgp_Array1OfPnt myNodes;
Poly_Array1OfTriangle myTriangles;
};
DEFINE_STANDARD_HANDLE (MeshVS_LODDataSource, MeshVS_DataSource)
#endif // _MeshVS_LODDataSource_Header

31
src/MeshVS/MeshVS_MeshPrsBuilder.cxx
View File

@@ -717,7 +717,8 @@ void MeshVS_MeshPrsBuilder::AddFaceWirePrs (const TColStd_Array1OfReal&
// Function : AddFaceSolidPrs
// Purpose :
//================================================================
void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Standard_Integer theID,
void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Handle(MeshVS_DataSource)& theDataSource,
const Standard_Integer theID,
const TColStd_Array1OfReal& theCoords,
const Standard_Integer theNbNodes,
const Standard_Integer theMaxNodes,
@@ -727,9 +728,7 @@ void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Standard_Integer
const Standard_Real theShrinkingCoef,
const Standard_Boolean theIsSmoothShading) const
{
Handle(MeshVS_DataSource) aDataSource = myParentMesh->GetDataSource();
if (aDataSource.IsNull())
if (theDataSource.IsNull())
return;
Standard_Real aCenterX = 0.0;
@@ -752,7 +751,7 @@ void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Standard_Integer
{
for (Standard_Integer aNodeIdx = 1; aNodeIdx <= theNbNodes; ++aNodeIdx)
{
if (!aDataSource->GetNodeNormal (aNodeIdx, theID, aNormalX, aNormalY, aNormalZ))
if (!theDataSource->GetNodeNormal (aNodeIdx, theID, aNormalX, aNormalY, aNormalZ))
break;
aVertexNormals.Append (gp_XYZ (aNormalX, aNormalY, aNormalZ));
@@ -761,7 +760,7 @@ void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Standard_Integer
if (!theIsSmoothShading || aVertexNormals.Size() != theNbNodes)
{
aDataSource->GetNormal (theID, theMaxNodes, aNormalX, aNormalY, aNormalZ);
theDataSource->GetNormal (theID, theMaxNodes, aNormalX, aNormalY, aNormalZ);
}
}
@@ -814,6 +813,26 @@ void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Standard_Integer
}
}
//================================================================
// Function : AddFaceSolidPrs
// Purpose :
//================================================================
void MeshVS_MeshPrsBuilder::AddFaceSolidPrs (const Standard_Integer theID,
const TColStd_Array1OfReal& theCoords,
const Standard_Integer theNbNodes,
const Standard_Integer theMaxNodes,
const Handle(Graphic3d_ArrayOfTriangles)& theTriangles,
const Standard_Boolean theIsShaded,
const Standard_Boolean theIsShrinked,
const Standard_Real theShrinkingCoef,
const Standard_Boolean theIsSmoothShading) const
{
Handle(MeshVS_DataSource) aDataSource = myParentMesh->GetDataSource();
AddFaceSolidPrs (aDataSource, theID, theCoords, theNbNodes, theMaxNodes, theTriangles,
theIsShaded, theIsShrinked, theShrinkingCoef, theIsSmoothShading);
}
//================================================================
// Function : AddVolumePrs
// Purpose :

107
src/MeshVS/MeshVS_MeshPrsBuilder.hxx
View File

@@ -44,64 +44,117 @@ DEFINE_STANDARD_HANDLE(MeshVS_MeshPrsBuilder, MeshVS_PrsBuilder)
//! This class provides methods to compute base mesh presentation
class MeshVS_MeshPrsBuilder : public MeshVS_PrsBuilder
{
public:
//! Creates builder with certain display mode flags, data source, ID and priority
Standard_EXPORT MeshVS_MeshPrsBuilder(const Handle(MeshVS_Mesh)& Parent, const MeshVS_DisplayModeFlags& Flags = MeshVS_DMF_OCCMask, const Handle(MeshVS_DataSource)& DS = 0, const Standard_Integer Id = -1, const MeshVS_BuilderPriority& Priority = MeshVS_BP_Mesh);
Standard_EXPORT MeshVS_MeshPrsBuilder(const Handle(MeshVS_Mesh)& Parent,
const MeshVS_DisplayModeFlags& Flags = MeshVS_DMF_OCCMask,
const Handle(MeshVS_DataSource)& DS = 0,
const Standard_Integer Id = -1,
const MeshVS_BuilderPriority& Priority = MeshVS_BP_Mesh);
//! Builds base mesh presentation by calling the methods below
Standard_EXPORT virtual void Build (const Handle(Prs3d_Presentation)& Prs, const TColStd_PackedMapOfInteger& IDs, TColStd_PackedMapOfInteger& IDsToExclude, const Standard_Boolean IsElement, const Standard_Integer DisplayMode) const;
Standard_EXPORT virtual void Build (const Handle(Prs3d_Presentation)& Prs,
const TColStd_PackedMapOfInteger& IDs,
TColStd_PackedMapOfInteger& IDsToExclude,
const Standard_Boolean IsElement,
const Standard_Integer DisplayMode) const;
//! Builds nodes presentation
Standard_EXPORT virtual void BuildNodes (const Handle(Prs3d_Presentation)& Prs, const TColStd_PackedMapOfInteger& IDs, TColStd_PackedMapOfInteger& IDsToExclude, const Standard_Integer DisplayMode) const;
Standard_EXPORT virtual void BuildNodes (const Handle(Prs3d_Presentation)& Prs,
const TColStd_PackedMapOfInteger& IDs,
TColStd_PackedMapOfInteger& IDsToExclude,
const Standard_Integer DisplayMode) const;
//! Builds elements presentation
Standard_EXPORT virtual void BuildElements (const Handle(Prs3d_Presentation)& Prs, const TColStd_PackedMapOfInteger& IDs, TColStd_PackedMapOfInteger& IDsToExclude, const Standard_Integer DisplayMode) const;
Standard_EXPORT virtual void BuildElements (const Handle(Prs3d_Presentation)& Prs,
const TColStd_PackedMapOfInteger& IDs,
TColStd_PackedMapOfInteger& IDsToExclude,
const Standard_Integer DisplayMode) const;
//! Builds presentation of hilighted entity
Standard_EXPORT virtual void BuildHilightPrs (const Handle(Prs3d_Presentation)& Prs, const TColStd_PackedMapOfInteger& IDs, const Standard_Boolean IsElement) const;
Standard_EXPORT virtual void BuildHilightPrs (const Handle(Prs3d_Presentation)& Prs,
const TColStd_PackedMapOfInteger& IDs,
const Standard_Boolean IsElement) const;
//! Add to array polygons or polylines representing volume
Standard_EXPORT static void AddVolumePrs (const Handle(MeshVS_HArray1OfSequenceOfInteger)& Topo, const TColStd_Array1OfReal& Nodes, const Standard_Integer NbNodes, const Handle(Graphic3d_ArrayOfPrimitives)& Array, const Standard_Boolean IsReflected, const Standard_Boolean IsShrinked, const Standard_Boolean IsSelect, const Standard_Real ShrinkCoef);
Standard_EXPORT static void AddVolumePrs (const Handle(MeshVS_HArray1OfSequenceOfInteger)& Topo,
const TColStd_Array1OfReal& Nodes,
const Standard_Integer NbNodes,
const Handle(Graphic3d_ArrayOfPrimitives)& Array,
const Standard_Boolean IsReflected,
const Standard_Boolean IsShrinked,
const Standard_Boolean IsSelect,
const Standard_Real ShrinkCoef);
//! Calculate how many polygons or polylines are necessary to draw passed topology
Standard_EXPORT static void HowManyPrimitives (const Handle(MeshVS_HArray1OfSequenceOfInteger)& Topo, const Standard_Boolean AsPolygons, const Standard_Boolean IsSelect, const Standard_Integer NbNodes, Standard_Integer& Vertices, Standard_Integer& Bounds);
Standard_EXPORT static void HowManyPrimitives (const Handle(MeshVS_HArray1OfSequenceOfInteger)& Topo,
const Standard_Boolean AsPolygons,
const Standard_Boolean IsSelect,
const Standard_Integer NbNodes,
Standard_Integer& Vertices,
Standard_Integer& Bounds);
//! Add to array of polylines some lines representing link
Standard_EXPORT void AddLinkPrs (const TColStd_Array1OfReal& theCoords,
const Handle(Graphic3d_ArrayOfSegments)& theLines,
const Standard_Boolean IsShrinked,
const Standard_Real ShrinkCoef) const;
//! Add to array of segments representing face's wire
Standard_EXPORT void AddFaceWirePrs (const TColStd_Array1OfReal& theCoords,
const Standard_Integer theNbNodes,
const Handle(Graphic3d_ArrayOfSegments)& theLines,
const Standard_Boolean theIsShrinked,
const Standard_Real theShrinkingCoef) const;
//! Add to array of polygons a polygon representing face
Standard_EXPORT void AddFaceSolidPrs (const Handle(MeshVS_DataSource)& theDataSource,
const Standard_Integer ID,
const TColStd_Array1OfReal& theCoords,
const Standard_Integer theNbNodes,
const Standard_Integer theMaxNodes,
const Handle(Graphic3d_ArrayOfTriangles)& theTriangles,
const Standard_Boolean theIsReflected,
const Standard_Boolean theIsShrinked,
const Standard_Real theShrinkCoef,
const Standard_Boolean theIsMeshSmoothShading) const;
DEFINE_STANDARD_RTTI(MeshVS_MeshPrsBuilder,MeshVS_PrsBuilder)
protected:
//! Add to array of polylines some lines representing link
Standard_EXPORT void AddLinkPrs (const TColStd_Array1OfReal& theCoords, const Handle(Graphic3d_ArrayOfSegments)& theLines, const Standard_Boolean IsShrinked, const Standard_Real ShrinkCoef) const;
//! Add to array of segments representing face's wire
Standard_EXPORT void AddFaceWirePrs (const TColStd_Array1OfReal& theCoords, const Standard_Integer theNbNodes, const Handle(Graphic3d_ArrayOfSegments)& theLines, const Standard_Boolean theIsShrinked, const Standard_Real theShrinkingCoef) const;
//! Add to array of polygons a polygon representing face
Standard_EXPORT void AddFaceSolidPrs (const Standard_Integer ID, const TColStd_Array1OfReal& theCoords, const Standard_Integer theNbNodes, const Standard_Integer theMaxNodes, const Handle(Graphic3d_ArrayOfTriangles)& theTriangles, const Standard_Boolean theIsReflected, const Standard_Boolean theIsShrinked, const Standard_Real theShrinkCoef, const Standard_Boolean theIsMeshSmoothShading) const;
Standard_EXPORT void AddFaceSolidPrs (const Standard_Integer ID,
const TColStd_Array1OfReal& theCoords,
const Standard_Integer theNbNodes,
const Standard_Integer theMaxNodes,
const Handle(Graphic3d_ArrayOfTriangles)& theTriangles,
const Standard_Boolean theIsReflected,
const Standard_Boolean theIsShrinked,
const Standard_Real theShrinkCoef,
const Standard_Boolean theIsMeshSmoothShading) const;
//! Draw array of polygons and polylines in the certain order according to transparency
Standard_EXPORT void DrawArrays (const Handle(Prs3d_Presentation)& Prs, const Handle(Graphic3d_ArrayOfPrimitives)& thePolygons, const Handle(Graphic3d_ArrayOfPrimitives)& theLines, const Handle(Graphic3d_ArrayOfPrimitives)& theLinkLines, const Handle(Graphic3d_ArrayOfPrimitives)& theVolumesInShad, const Standard_Boolean IsPolygonsEdgesOff, const Standard_Boolean IsSelected, const Handle(Graphic3d_AspectFillArea3d)& theFillAsp, const Handle(Graphic3d_AspectLine3d)& theLineAsp) const;
Standard_EXPORT void DrawArrays (const Handle(Prs3d_Presentation)& Prs,
const Handle(Graphic3d_ArrayOfPrimitives)& thePolygons,
const Handle(Graphic3d_ArrayOfPrimitives)& theLines,
const Handle(Graphic3d_ArrayOfPrimitives)& theLinkLines,
const Handle(Graphic3d_ArrayOfPrimitives)& theVolumesInShad,
const Standard_Boolean IsPolygonsEdgesOff,
const Standard_Boolean IsSelected,
const Handle(Graphic3d_AspectFillArea3d)& theFillAsp,
const Handle(Graphic3d_AspectLine3d)& theLineAsp) const;
//! Default calculation of center of face or link. This method if useful for shrink mode presentation
//! theCoords is array of nodes co-ordinates in the strict order X1, Y1, Z1, X2...
//! NbNodes is number of nodes an element consist of
//! xG, yG, zG are co-ordinates of center whose will be returned
Standard_EXPORT static void CalculateCenter (const TColStd_Array1OfReal& theCoords, const Standard_Integer NbNodes, Standard_Real& xG, Standard_Real& yG, Standard_Real& zG);
private:
Standard_EXPORT static void CalculateCenter (const TColStd_Array1OfReal& theCoords,
const Standard_Integer NbNodes,
Standard_Real& xG,
Standard_Real& yG,
Standard_Real& zG);
};

3
src/OpenGl/FILES
View File

@@ -111,6 +111,9 @@ OpenGl_GlCore44.hxx
OpenGl_LayerList.cxx
OpenGl_LayerList.hxx
OpenGl_LayerFilter.hxx
OpenGl_LOD.hxx
OpenGl_LOD.lxx
OpenGl_LOD.cxx
OpenGl_GraphicDriver.cxx
OpenGl_GraphicDriver.hxx
OpenGl_IndexBuffer.cxx

47
src/OpenGl/OpenGl_LOD.cxx Normal file
View File

@@ -0,0 +1,47 @@
// Created on: 2015-10-29
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#include <OpenGl_LOD.hxx>
//=======================================================================
// function : Construction
// purpose :
//=======================================================================
OpenGl_LOD::OpenGl_LOD()
: Graphic3d_LOD (),
myRange (-DBL_MAX, DBL_MAX) {}
//=======================================================================
// function : SetRange
// purpose :
//=======================================================================
void OpenGl_LOD::SetRange (const Standard_Real theFrom, const Standard_Real theTo)
{
Standard_ASSERT_RAISE (theFrom < theTo,
"The upper boundary of the interval must be greater than lower one!");
myRange = OpenGl_RangeOfLOD (theFrom, theTo);
}
//=======================================================================
// function : NewGroup
// purpose :
//=======================================================================
Handle(Graphic3d_Group) OpenGl_LOD::NewGroup()
{
Handle(OpenGl_Group) aGroup = new OpenGl_Group (myParent);
myGroups.Append (aGroup);
return aGroup;
}

92
src/OpenGl/OpenGl_LOD.hxx Normal file
View File

@@ -0,0 +1,92 @@
// Created on: 2015-10-29
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _OpenGl_LOD_Header
#define _OpenGl_LOD_Header
#include <Graphic3d_LOD.hxx>
#include <OpenGl_AspectFace.hxx>
#include <OpenGl_AspectLine.hxx>
#include <OpenGl_Structure.hxx>
struct OpenGl_RangeOfLOD
{
public:
OpenGl_RangeOfLOD (const Standard_Real theFrom, const Standard_Real theTo)
{
Standard_ASSERT_RAISE (theFrom < theTo,
"The upper boundary of the interval must be greater than lower one!");
myTo = theTo;
myFrom = theFrom;
}
Standard_Boolean IsIn (const Standard_Real theVal) const
{
return (myFrom < theVal) && (theVal < myTo);
}
Standard_Boolean IsLess (const Standard_Real theVal) const
{
return myFrom < theVal;
}
Standard_Boolean IsGreater (const Standard_Real theVal) const
{
return myTo < theVal;
}
bool operator < (const OpenGl_RangeOfLOD& theOther) const
{
return myFrom < theOther.myFrom;
}
private:
Standard_Real myFrom;
Standard_Real myTo;
};
class OpenGl_LOD : public Graphic3d_LOD
{
public:
Standard_EXPORT OpenGl_LOD();
Standard_EXPORT ~OpenGl_LOD() {};
Standard_EXPORT virtual void SetRange (const Standard_Real theFrom, const Standard_Real theTo) Standard_OVERRIDE;
inline const OpenGl_RangeOfLOD& GetRange() const
{
return myRange;
}
Standard_EXPORT virtual Handle(Graphic3d_Group) NewGroup() Standard_OVERRIDE;
const Graphic3d_SequenceOfGroup& DrawGroups() const
{
return myGroups;
}
DEFINE_STANDARD_RTTI (OpenGl_LOD, Graphic3d_LOD)
private:
OpenGl_RangeOfLOD myRange;
};
DEFINE_STANDARD_HANDLE (OpenGl_LOD, Graphic3d_LOD)
#include <OpenGl_LOD.lxx>
#endif // _OpenGl_LOD_Header

22
src/OpenGl/OpenGl_LOD.lxx Normal file
View File

@@ -0,0 +1,22 @@
// Created on: 2015-10-29
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
struct IsLessLOD
{
inline bool operator() (const Handle(OpenGl_LOD)& theLod1, const Handle(OpenGl_LOD)& theLod2) const
{
return theLod1->GetRange() < theLod2->GetRange();
}
};

89
src/OpenGl/OpenGl_Structure.cxx
View File

@@ -17,6 +17,7 @@
#include <OpenGl_Context.hxx>
#include <OpenGl_GlCore11.hxx>
#include <OpenGl_GraphicDriver.hxx>
#include <OpenGl_LOD.hxx>
#include <OpenGl_ShaderManager.hxx>
#include <OpenGl_ShaderProgram.hxx>
#include <OpenGl_StructureShadow.hxx>
@@ -127,7 +128,8 @@ OpenGl_Structure::OpenGl_Structure (const Handle(Graphic3d_StructureManager)& th
myIsRaytracable (Standard_False),
myModificationState (0),
myIsCulled (Standard_True),
myIsMirrored (Standard_False)
myIsMirrored (Standard_False),
myCurrentLodId (-1)
{
//
}
@@ -431,6 +433,18 @@ Handle(Graphic3d_Group) OpenGl_Structure::NewGroup (const Handle(Graphic3d_Struc
return aGroup;
}
// =======================================================================
// function : NewLOD
// purpose :
// =======================================================================
Handle(Graphic3d_LOD) OpenGl_Structure::NewLOD (const Handle(Graphic3d_Structure)& theStruct)
{
Handle(OpenGl_LOD) aLOD = new OpenGl_LOD();
aLOD->SetParent (theStruct);
myLODVec.Append (aLOD);
return aLOD;
}
// =======================================================================
// function : RemoveGroup
// purpose :
@@ -525,6 +539,15 @@ void OpenGl_Structure::Render (const Handle(OpenGl_Workspace) &theWorkspace) con
return;
}
Handle(OpenGl_LOD) aLODToRender = NULL;
if (myLODVec.Size() > 0)
{
findCurrentLOD (theWorkspace);
if (myCurrentLodId == -1)
return;
aLODToRender = myLODVec.Value (myCurrentLodId);
}
const Handle(OpenGl_Context)& aCtx = theWorkspace->GetGlContext();
// Render named status
@@ -647,7 +670,7 @@ void OpenGl_Structure::Render (const Handle(OpenGl_Workspace) &theWorkspace) con
}
// Render groups
const Graphic3d_SequenceOfGroup& aGroups = DrawGroups();
const Graphic3d_SequenceOfGroup& aGroups = !aLODToRender.IsNull() ? aLODToRender->DrawGroups() : DrawGroups();
for (OpenGl_Structure::GroupIterator aGroupIter (aGroups); aGroupIter.More(); aGroupIter.Next())
{
aGroupIter.Value()->Render (theWorkspace);
@@ -764,3 +787,65 @@ Handle(Graphic3d_CStructure) OpenGl_Structure::ShadowLink (const Handle(Graphic3
{
return new OpenGl_StructureShadow (theManager, this);
}
//=======================================================================
//function : binSearchLOD
//purpose :
//=======================================================================
Standard_Integer OpenGl_Structure::binSearchLOD (const Standard_Integer theFirst,
const Standard_Integer theLast,
const Standard_Real theMetrics) const
{
if (theFirst > theLast)
return -1;
else
{
Standard_Integer aMid = (theFirst + theLast) / 2;
if (myLODVec.Value (aMid)->GetRange().IsIn (theMetrics))
return aMid;
else
if (myLODVec.Value (aMid)->GetRange().IsLess (theMetrics))
return binSearchLOD (aMid + 1, theLast, theMetrics);
else
return binSearchLOD (theFirst, aMid - 1, theMetrics);
}
}
//=======================================================================
//function : findCurrentLOD
//purpose :
//=======================================================================
void OpenGl_Structure::findCurrentLOD (const Handle(OpenGl_Workspace)& theWorkspace) const
{
Standard_Real aMetric = myLODVec.Value (0)->ComputeMetrics (theWorkspace->View()->Camera());
std::cout << aMetric << std::endl;
if (myCurrentLodId != -1 && myLODVec.Value (myCurrentLodId)->GetRange().IsIn (aMetric))
return;
if (myLODVec.Last()->GetRange().IsGreater (aMetric))
{
myCurrentLodId = myLODVec.Size() - 1;
return;
}
myCurrentLodId = binSearchLOD (0, (Standard_Integer)myLODVec.Size() - 1, aMetric);
}
//=======================================================================
//function : SetDetailLevelRange
//purpose :
//=======================================================================
void OpenGl_Structure::SetDetailLevelRange (const Standard_Integer theIdOfLOD,
const Standard_Real theFrom,
const Standard_Real theTo)
{
Standard_ASSERT_RAISE (theFrom < theTo,
"The upper boundary of the interval must be greater than lower one!");
if (theIdOfLOD < 0 || theIdOfLOD > myLODVec.Size())
return;
myLODVec.Value( theIdOfLOD)->SetRange (theFrom, theTo);
std::sort (myLODVec.begin(), myLODVec.end(), IsLessLOD());
}

22
src/OpenGl/OpenGl_Structure.hxx
View File

@@ -35,8 +35,10 @@
class OpenGl_Structure;
class OpenGl_GraphicDriver;
class OpenGl_LOD;
typedef NCollection_List<const OpenGl_Structure* > OpenGl_ListOfStructure;
typedef NCollection_Vector<Handle(OpenGl_LOD)> OpenGl_VectorOfLODs;
//! Implementation of low-level graphic structure.
class OpenGl_Structure : public Graphic3d_CStructure
@@ -98,9 +100,16 @@ public:
//! Create new group within this structure
Standard_EXPORT virtual Handle(Graphic3d_Group) NewGroup (const Handle(Graphic3d_Structure)& theStruct);
//! Create new LOD within this structure
Standard_EXPORT virtual Handle(Graphic3d_LOD) NewLOD (const Handle(Graphic3d_Structure)& theStruct) Standard_OVERRIDE;
//! Remove group from this structure
Standard_EXPORT virtual void RemoveGroup (const Handle(Graphic3d_Group)& theGroup);
Standard_EXPORT virtual void SetDetailLevelRange (const Standard_Integer theIdOfLOD,
const Standard_Real theFrom,
const Standard_Real theTo) Standard_OVERRIDE;
public:
//! @return graphic groups
@@ -192,6 +201,11 @@ public:
//! Is the structure ray-tracable (contains ray-tracable elements)?
Standard_Boolean IsRaytracable() const;
Standard_EXPORT virtual Standard_Integer GetDetailLevelsNb() const Standard_OVERRIDE
{
return (Standard_Integer)myLODVec.Size();
}
protected:
Standard_EXPORT virtual ~OpenGl_Structure();
@@ -199,6 +213,10 @@ protected:
//! Updates ray-tracable status for structure and its parents.
void UpdateStateIfRaytracable (const Standard_Boolean toCheck = Standard_True) const;
private:
void findCurrentLOD (const Handle(OpenGl_Workspace)& theWorkspace) const;
Standard_Integer binSearchLOD (const Standard_Integer theFirst, const Standard_Integer theLast, const Standard_Real theMetrics) const;
protected:
OpenGl_Matrix* myTransformation;
@@ -219,6 +237,10 @@ protected:
Standard_Boolean myIsMirrored; //!< Used to tell OpenGl to interpret polygons in clockwise order.
private:
mutable OpenGl_VectorOfLODs myLODVec;
mutable Standard_Integer myCurrentLodId;
public:
DEFINE_STANDARD_RTTI(OpenGl_Structure, Graphic3d_CStructure) // Type definition

9
src/Prs3d/Prs3d_Root.cxx
View File

@@ -25,3 +25,12 @@ Handle (Graphic3d_Group) Prs3d_Root::NewGroup (const Handle (Prs3d_Presentation)
{
return Prs3d->NewGroup();
}
//=======================================================================
//function : CreateLOD
//purpose :
//=======================================================================
Handle(Graphic3d_LOD) Prs3d_Root::NewLOD (const Handle (Prs3d_Presentation)& theParentPrs)
{
return theParentPrs->NewLOD();
}

17
src/Prs3d/Prs3d_Root.hxx
View File

@@ -22,6 +22,7 @@
#include <Standard_Handle.hxx>
class Graphic3d_Group;
class Graphic3d_LOD;
class Prs3d_Presentation;
@@ -45,21 +46,7 @@ public:
//! A group also contains the attributes whose ranges are limited to the primitives in it.
Standard_EXPORT static Handle(Graphic3d_Group) NewGroup (const Handle(Prs3d_Presentation)& Prs3d);
protected:
private:
Standard_EXPORT static Handle(Graphic3d_LOD) NewLOD (const Handle (Prs3d_Presentation)& theParentPrs);
};

1
src/TKMeshVS/EXTERNLIB
View File

@@ -4,3 +4,4 @@ TKService
TKernel
TKG3d
TKG2d
TKSTL

303
src/XSDRAWSTLVRML/XSDRAWSTLVRML.cxx
View File

@@ -55,6 +55,7 @@
#include <TopoDS_Shape.hxx>
#include <V3d_View.hxx>
#include <ViewerTest.hxx>
#include <ViewerTest_DoubleMapOfInteractiveAndName.hxx>
#include <VrmlAPI.hxx>
#include <VrmlAPI_Writer.hxx>
#include <VrmlData_DataMapOfShapeAppearance.hxx>
@@ -80,6 +81,7 @@
extern Standard_Boolean VDisplayAISObject (const TCollection_AsciiString& theName,
const Handle(AIS_InteractiveObject)& theAISObj,
Standard_Boolean theReplaceIfExists = Standard_True);
extern ViewerTest_DoubleMapOfInteractiveAndName& GetMapOfAIS();
static Standard_Integer writestl
(Draw_Interpretor& di, Standard_Integer argc, const char** argv)
@@ -1202,6 +1204,296 @@ static Standard_Integer meshinfo(Draw_Interpretor& di,
return 0;
}
#include <AIS_InteractiveObject.hxx>
#include <BRepBuilderAPI_Copy.hxx>
#include <BRepMesh_IncrementalMesh.hxx>
#include <BRepTools.hxx>
#include <MeshVS_LODDataSource.hxx>
#include <TopExp_Explorer.hxx>
#include <TopoDS.hxx>
#include <ViewerTest_AutoUpdater.hxx>
//=======================================================================
//function : VGenLods
//purpose : Generates sequence of LODs for the shape given
//=======================================================================
static int MeshGenLods (Draw_Interpretor& theDI,
Standard_Integer theArgNum,
const char** theArgs)
{
if (theArgNum < 3)
{
std::cout << "Error! Wrong number of arguments. See usage:\n";
theDI.PrintHelp (theArgs[0]);
return 1;
}
Handle(AIS_InteractiveContext) aCtx = ViewerTest::GetAISContext();
if (aCtx.IsNull())
{
std::cout << "Error! No opened viewer." << std::endl;
return 1;
}
Standard_CString aShapeName = theArgs[1];
const TopoDS_Shape aShape = DBRep::Get (aShapeName);
if (aShape.IsNull())
{
std::cout << "Error! No shape with the name " << aShapeName << "." << std::endl;
return 1;
}
const Standard_Integer aLodsNb = Draw::Atoi (theArgs[2]);
if (aLodsNb <= 0)
{
std::cout << "Error! Incorrect amount of LODs passed: " << aLodsNb << "." << std::endl;
std::cout << "Must be greater than zero." << std::endl;
return 1;
}
Standard_Boolean toPrintInfo = Standard_False;
TCollection_AsciiString aSavePath = "";
Handle(MeshVS_Mesh) aMesh = NULL;
if (theArgNum > 3)
{
for (Standard_Integer anArgIdx = 3; anArgIdx < theArgNum; ++anArgIdx)
{
TCollection_AsciiString anArg (theArgs[anArgIdx]);
anArg.LowerCase();
if (anArg == "-debug")
{
toPrintInfo = Standard_True;
}
else if (anArg == "-mesh")
{
aMesh = Handle(MeshVS_Mesh)::DownCast (GetMapOfAIS().Find2 (theArgs[++anArgIdx]));
}
else if (anArg == "-save")
{
aSavePath = TCollection_AsciiString (theArgs[++anArgIdx]);
}
}
}
// Determine max deflection of a shape
Handle(Poly_Triangulation) aFaceTrg;
TopLoc_Location aFaceLoc;
Standard_Real aMaxDefl = 0.0;
for (TopExp_Explorer anExplorer (aShape, TopAbs_FACE); anExplorer.More(); anExplorer.Next())
{
TopoDS_Face aCurFace = TopoDS::Face (anExplorer.Current());
aFaceTrg = BRep_Tool::Triangulation (aCurFace, aFaceLoc);
if (!aFaceTrg.IsNull())
{
if (aFaceTrg->Deflection() > aMaxDefl)
aMaxDefl = aFaceTrg->Deflection();
}
}
BRepTools::Clean (aShape);
BRepMesh_IncrementalMesh aBaseMesher;
aBaseMesher.SetShape (aShape);
aBaseMesher.SetDeflection (aMaxDefl);
aBaseMesher.SetRelative (Standard_False);
aBaseMesher.SetAngle (0.5);
aBaseMesher.SetParallel (Standard_False);
aBaseMesher.SetMinSize (Precision::Confusion());
aBaseMesher.SetInternalVerticesMode (Standard_True);
aBaseMesher.SetControlSurfaceDeflection (Standard_True);
aBaseMesher.Perform();
ViewerTest_AutoUpdater anAutoUpd (aCtx, ViewerTest::CurrentView());
// compute the shape for each LOD
TopoDS_Shape* aLodShapes = new TopoDS_Shape[aLodsNb];
BRepBuilderAPI_Copy aMainCopyAlgo;
aMainCopyAlgo.Perform (aShape, Standard_True, Standard_True);
aLodShapes[0] = aMainCopyAlgo.Shape();
Standard_Real aDeflDecrFactor = aMaxDefl / aLodsNb;
for (Standard_Integer aLodIdx = 1; aLodIdx < aLodsNb; ++aLodIdx)
{
BRepBuilderAPI_Copy aCopyAlgo;
aCopyAlgo.Perform (aShape, Standard_True, Standard_True);
aLodShapes[aLodIdx] = aCopyAlgo.Shape();
BRepTools::Clean (aLodShapes[aLodIdx]);
BRepMesh_IncrementalMesh aMesher;
aMesher.SetShape (aLodShapes[aLodIdx]);
aMesher.SetDeflection (aMaxDefl - aLodIdx * aDeflDecrFactor);
aMesher.SetRelative (Standard_False);
aMesher.SetAngle (0.5);
aMesher.SetParallel (Standard_False);
aMesher.SetMinSize (Precision::Confusion());
aMesher.SetInternalVerticesMode (Standard_True);
aMesher.SetControlSurfaceDeflection (Standard_True);
aMesher.Perform();
if (toPrintInfo)
{
Standard_Integer aStatus = aMesher.GetStatusFlags();
std::cout << "LOD #" << aLodIdx << " meshing status: ";
if (!aStatus)
std::cout << " OK" << std::endl;
else
{
for (Standard_Integer aBitIdx = 0; aBitIdx < 4; ++aBitIdx)
{
if ((aStatus >> aBitIdx) & 1)
{
switch (aBitIdx + 1)
{
case 1:
std::cout << " OpenWire ";
break;
case 2:
std::cout << " SelfIntersectingWire ";
break;
case 3:
std::cout << " Failure ";
break;
case 4:
std::cout << " ReMesh ";
break;
}
}
}
std::cout << std::endl;
}
}
}
if (toPrintInfo)
{
std::cout << std::endl;
for (Standard_Integer aLodIdx = 0; aLodIdx < aLodsNb; ++aLodIdx)
{
std::cout << "LOD #" << aLodIdx + 1 << " info:" << std::endl;
if (aLodShapes[aLodIdx].IsNull())
{
std::cout << "The shape is null!" << std::endl;
}
Handle(Poly_Triangulation) aCurTrg;
TopLoc_Location aCurLoc;
Standard_Real aDefl = 0.0;
Standard_Integer aTrgsNb = 0, aNodesNb = 0;
for (TopExp_Explorer aShapeExp (aLodShapes[aLodIdx], TopAbs_FACE); aShapeExp.More(); aShapeExp.Next())
{
TopoDS_Face aCurFace = TopoDS::Face (aShapeExp.Current());
aCurTrg = BRep_Tool::Triangulation (aCurFace, aCurLoc);
if (!aCurTrg.IsNull())
{
aTrgsNb += aCurTrg->NbTriangles();
aNodesNb += aCurTrg->NbNodes();
if (aCurTrg->Deflection() > aDefl)
aDefl = aCurTrg->Deflection();
}
}
std::cout << "deflection : " << aDefl << std::endl;
std::cout << "triangles nb: " << aTrgsNb << std::endl;
std::cout << "nodes nb : " << aNodesNb << std::endl;
std::cout << std::endl;
}
}
if (!aMesh.IsNull() && aSavePath != "")
{
if (aSavePath.Value (aSavePath.Length()) != '/')
{
aSavePath = aSavePath + "/";
}
aSavePath = aSavePath + aShapeName + "_LOD";
for (Standard_Integer aLodIdx = 0; aLodIdx < aLodsNb; ++aLodIdx)
{
StlAPI_Writer aWriter;
aWriter.ASCIIMode() = Standard_False;
TCollection_AsciiString aPath = aSavePath + aLodIdx + ".stl";
StlAPI_ErrorStatus aStatus = aWriter.Write (aLodShapes[aLodIdx], aPath.ToCString());
switch (aStatus)
{
case StlAPI_CannotOpenFile:
std::cout << "Error! Cannot create/open a file with the name: " << aPath << std::endl;
break;
case StlAPI_StatusOK:
default:
std::cout << "LOD" << aLodIdx << " was written sucessfully to the file " << aPath << std::endl;
}
}
}
return 0;
}
static int MeshLod (Draw_Interpretor& theDI,
Standard_Integer theArgNum,
const char** theArgs)
{
if (theArgNum < 6)
{
std::cout << "Error! Wrong number of arguments. See usage:\n";
theDI.PrintHelp (theArgs[0]);
return 1;
}
Handle(AIS_InteractiveContext) aCtx = ViewerTest::GetAISContext();
if (aCtx.IsNull())
{
std::cout << "Error! No opened viewer." << std::endl;
return 1;
}
Standard_CString aShapeName = theArgs[1];
if (!GetMapOfAIS().IsBound2 (aShapeName))
{
std::cout << "Error! No interactive object with the name " << aShapeName << "." << std::endl;
return 1;
}
Handle(MeshVS_Mesh) aMesh = Handle(MeshVS_Mesh)::DownCast (GetMapOfAIS().Find2 (aShapeName));
if (aMesh.IsNull())
{
std::cout << "Error! No mesh with the name " << aShapeName << "." << std::endl;
return 1;
}
const TCollection_AsciiString aPathToLOD = Draw::Atoi (theArgs[3]);
if (aPathToLOD == "")
{
std::cout << "Error! Path to LOD must not be empty!" << std::endl;
return 1;
}
Standard_Real aFromRange = -DBL_MAX;
Standard_Real aToRange = DBL_MAX;
for (Standard_Integer anArgIdx = 4; anArgIdx < theArgNum; ++anArgIdx)
{
TCollection_AsciiString anArg (theArgs[anArgIdx]);
anArg.LowerCase();
if (anArg == "-from")
{
aFromRange = Draw::Atof (theArgs[++anArgIdx]);
}
else if (anArg == "-to")
{
aToRange = Draw::Atof (theArgs[++anArgIdx]);
}
}
if (aFromRange > aToRange)
{
std::cout << "Error! From range must be less than to! Current values are:" << std::endl;
std::cout << "from: " << aFromRange << "; to: " << aToRange << std::endl;
return 1;
}
OSD_Path aFile (theArgs[3]);
Handle(Draw_ProgressIndicator) aProgress = new Draw_ProgressIndicator (theDI, 1);
Handle(StlMesh_Mesh) aSTLMesh = RWStl::ReadFile (aFile, aProgress);
if (aSTLMesh.IsNull())
{
std::cout << "Error! Can not read LOD located at the path: " << aPathToLOD << std::endl;
return 1;
}
Handle(MeshVS_LODDataSource) aLod = new MeshVS_LODDataSource (aSTLMesh);
aLod->ComputePrs (aMesh);
Standard_Integer aIdOfLod = aMesh->Presentation()->GetDetailLevelsNb();
aMesh->Presentation()->SetDetailLevelRange (aIdOfLod - 1, aFromRange, aToRange);
return 0;
}
//-----------------------------------------------------------------------------
void XSDRAWSTLVRML::InitCommands (Draw_Interpretor& theCommands)
@@ -1232,6 +1524,17 @@ void XSDRAWSTLVRML::InitCommands (Draw_Interpretor& theCommands)
theCommands.Add ("meshdeform", "display deformed mesh", __FILE__, meshdeform, g );
theCommands.Add ("mesh_edge_width", "set width of edges", __FILE__, mesh_edge_width, g );
theCommands.Add ("meshinfo", "displays the number of nodes and triangles", __FILE__, meshinfo, g );
theCommands.Add ("meshgenlods",
"meshgenlods shapeName lodsNb [-save pathToFolder] [-mesh meshName] [-debug]"
"\n\t\t: Generates sequence of LODs for the shape with shapeName in amount of lodsNb."
"\n\t\t: lodsNb means the exact amount of physical LODs to generate, e.g. the main"
"\n\t\t: object's presentation is not considered as a separate level of detail here."
"\n\t\t: [-debug] enables printing of meshing status and each LOD's info.",
__FILE__, MeshGenLods, g);
theCommands.Add ("meshlod",
"meshlod shapeName [-path pathToLOD] [-from rangeFrom] [-to rangeTo]"
"\n\t\t: Adds LOD to the shape with shapeName. It will be visible in range [rangeFrom; rangeTo]."
__FILE__, MeshLod, g);
}
//==============================================================================

35
tests/bugs/vis/bug26812 Normal file
View File

@@ -0,0 +1,35 @@
set aPathToData ""
set aTmpFolder ""
pload ALL
vinit
# restore $aPathToData/occ/fuse.brep f
# vdisplay f
# restore $aTmpFolder/bearing.brep f
meshfromstl m $aTmpFolder/bearing.stl
# restore $aTmpFolder/bearing.brep f
# vdisplay f
# meshfromstl f $aPathToData/stl/bearing.stl
vfit
# meshgenlods f 2 -debug -mesh m -save D:/OCCT-tests/LOD
meshlod m -path $aTmpFolder/f_LOD0.stl -from 0.5 -to 1
meshlod m -path $aTmpFolder/f_LOD1.stl -from 1 -to 3
##########################################################################
# to generate brep file for LODs generaion, it is requred to use
# iges shapes. the following sequence of commands creates both
# stl and brep files for the iges shape
##########################################################################
igesbrep $aPathToData/iges/bearing.iges res *
vdisplay res
# write created brep to file
save res $aTmpFolder/bearing.brep
trinfo res
# copy maximal deflection value, then re-mesh the shape with proper
# deflection
tclean res
incmesh res $maxDeflection
# save corresponding stl with the same triangulation as will be used
# for generaion of LODs
writestl res $aTmpFolder/bearing.stl