[occt.git] / samples / mfc / occtdemo / Tesselate / Tesselate_Presentation.cpp

// Tesselate_Presentation.cpp: implementation of the Tesselate_Presentation class.
// Tesselate shapes.
////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "Tesselate_Presentation.h" 

#include <Precision.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Compound.hxx>

#include <BRep_Builder.hxx>
#include <BRepTools.hxx>
#include <BRep_Tool.hxx>
#include <BRepMesh.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>

#include <TopExp_Explorer.hxx>
#include <TopLoc_Location.hxx>
#include <TopTools_DataMapOfIntegerShape.hxx>
#include <TopTools_SequenceOfShape.hxx>

#include <Poly_Triangulation.hxx>
#include <Poly_PolygonOnTriangulation.hxx>
#include <Poly_Array1OfTriangle.hxx>
#include <TColgp_Array1OfPnt.hxx>
#include <TColStd_Array1OfInteger.hxx>

#include <gp_Pnt.hxx>


#ifdef WNT
 #define EOL "\r\n"
#else
 #define EOL "\n"
#endif

// Initialization of global variable with an instance of this class
OCCDemo_Presentation* OCCDemo_Presentation::Current = new Tesselate_Presentation;

// Initialization of array of samples
Standard_CString Tesselate_Presentation::myFileNames[] =
{
  "wedge_ok.brep",
  "shell1.brep",
  "Pump_Nut.brep",
  "Pump_TopCover.brep",
  0
};

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

Tesselate_Presentation::Tesselate_Presentation()
{
  for (myNbSamples = 0; myFileNames[myNbSamples]; myNbSamples++);
  setName ("Tesselate shapes");
}

//////////////////////////////////////////////////////////////////////
// Sample execution
//////////////////////////////////////////////////////////////////////

void Tesselate_Presentation::DoSample()
{
  getAISContext()->EraseAll();
  if (myIndex >=0 && myIndex < myNbSamples)
    sample (myFileNames[myIndex]);
}

//////////////////////////////////////////////////////////////////////
// Sample functions
//////////////////////////////////////////////////////////////////////
//================================================================

inline Standard_Integer _key(Standard_Integer n1,Standard_Integer n2)
{

  Standard_Integer key = 
    (n2>n1)?(n1<<16)+n2:(n2<<16)+n1;
  return key;
}

//DATA : [myIndex][{Deflection,NumberOfFace,NumberOfEdge}]
static const Standard_Real DATA [][3] = 
{
  {0.2,1,2},{0.5,6,2},{0.7,16,2},{1,1,2}
};


void Tesselate_Presentation::tesselateShape(const TopoDS_Shape& aShape)
{
  setResultTitle("Tesselate shape");
  TCollection_AsciiString aText = (
    "/////////////////////////////////////////////////////////////////" EOL
    "// Tesselate shape." EOL
    "/////////////////////////////////////////////////////////////////" EOL EOL
    ) ;

  Standard_Real aDeflection = DATA[myIndex][0];
  Standard_Integer aNumOfFace = (Standard_Integer)DATA[myIndex][1];
  Standard_Integer aNumOfEdge = (Standard_Integer)DATA[myIndex][2];

  aText +=
    "Standard_Real aDeflection;" EOL
    "// aDeflection = ... ;" EOL EOL

    "// removes all the triangulations of the faces ," EOL
    "//and all the polygons on the triangulations of the edges:" EOL
    "BRepTools::Clean(aShape);" EOL EOL

    "// adds a triangulation of the shape aShape with the deflection aDeflection:" EOL
    "BRepMesh::Mesh(aShape,aDeflection);" EOL EOL

    "TopExp_Explorer aExpFace,aExpEdge;" EOL
    "for(aExpFace.Init(aShape,TopAbs_FACE);aExpFace.More();aExpFace.Next())" EOL
    "{  " EOL
    "  TopoDS_Face aFace = TopoDS::Face(aExpFace.Current());" EOL
    "  TopLoc_Location aLocation;" EOL EOL
    
    "  // takes the triangulation of the face aFace:" EOL
    "  Handle(Poly_Triangulation) aTr = BRep_Tool::Triangulation(aFace,aLocation);" EOL EOL
    
    "  if(!aTr.IsNull()) // if this triangulation is not NULL" EOL
    "  { " EOL
    "    // takes the array of nodes for this triangulation:" EOL
    "    const TColgp_Array1OfPnt& aNodes = aTr->Nodes();" EOL
    "    // takes the array of triangles for this triangulation:" EOL
    "    const Poly_Array1OfTriangle& triangles = aTr->Triangles();" EOL EOL
    
    "    // create array of node points in absolute coordinate system" EOL
    "    TColgp_Array1OfPnt aPoints(1, aNodes.Length());" EOL
    "    for( Standard_Integer i = 1; i < aNodes.Length()+1; i++)" EOL
    "      aPoints(i) = aNodes(i).Transformed(aLocation);" EOL EOL

    "    // Takes the node points of each triangle of this triangulation." EOL
    "    // takes a number of triangles:" EOL
    "    Standard_Integer nnn = aTr->NbTriangles();" EOL
    "    Standard_Integer nt,n1,n2,n3;" EOL
    "    for( nt = 1 ; nt < nnn+1 ; nt++)" EOL
    "    {" EOL
    "      // takes the node indices of each triangle in n1,n2,n3:" EOL
    "      triangles(nt).Get(n1,n2,n3);" EOL
    "      // takes the node points:" EOL
    "      gp_Pnt aPnt1 = aPoints(n1);" EOL
    "      gp_Pnt aPnt2 = aPoints(n2);" EOL
    "      gp_Pnt aPnt3 = aPoints(n3);" EOL
    "    } " EOL EOL
    
    "    // Takes the polygon associated to an edge." EOL
    "    aExpEdge.Init(aFace,TopAbs_EDGE);" EOL
    "    TopoDS_Edge aEdge;" EOL
    "    // for example,working with the first edge:" EOL
    "    if(aExpEdge.More())" EOL
    "      aEdge = TopoDS::Edge(aExpEdge.Current());" EOL EOL
    
    "    if(!aEdge.IsNull()) // if this edge is not NULL" EOL
    "    {" EOL
    "      // takes the polygon associated to the edge aEdge:" EOL
    "      Handle(Poly_PolygonOnTriangulation) aPol = " EOL
    "        BRep_Tool::PolygonOnTriangulation(aEdge,aTr,aEdge.Location());" EOL EOL
    
    "      if(!aPol.IsNull()) // if this polygon is not NULL" EOL
    "        // takes the array of nodes for this polygon" EOL
    "        // (indexes in the array of nodes for triangulation of theFace):" EOL
    "        const TColStd_Array1OfInteger& aNodesOfPol = aPol->Nodes();" EOL
    "    }" EOL
    "  }" EOL
    "}" EOL EOL
    
    "//==================================================" EOL EOL
    
      ;
   aText += "  Result with deflection = ";
   aText += TCollection_AsciiString(aDeflection);
   aText += " :" EOL;

   setResultText(aText.ToCString());  

//==========================================================================

  BRepTools::Clean(aShape);
  BRepMesh::Mesh(aShape,aDeflection);

  BRep_Builder aBuilder,aBuild1,aBuild2;
  TopoDS_Compound aCompound,aComp1,aComp2;
  aBuilder.MakeCompound(aCompound);
  aBuild1.MakeCompound(aComp1);
  aBuild2.MakeCompound(aComp2);

  TopTools_SequenceOfShape aVertices;
  Standard_Integer aCount = 0;
  Standard_Integer aNumOfNodes = 0;
  Standard_Integer aNumOfTriangles = 0;
  
  Handle(AIS_InteractiveObject) aShowEdge,aShowFace,aShowShape;
  
  TopExp_Explorer aExpFace,aExpEdge;

  for(aExpFace.Init(aShape,TopAbs_FACE);aExpFace.More();aExpFace.Next())
  {  
    aCount++;
  
    TopoDS_Face aFace = TopoDS::Face(aExpFace.Current());
    TopLoc_Location aLocation;

    Handle(Poly_Triangulation) aTr = BRep_Tool::Triangulation(aFace,aLocation);

    if(!aTr.IsNull())
    { 
      const TColgp_Array1OfPnt& aNodes = aTr->Nodes();
      aNumOfNodes += aTr->NbNodes();
      Standard_Integer aLower = aNodes.Lower();
      Standard_Integer anUpper = aNodes.Upper();
      const Poly_Array1OfTriangle& triangles = aTr->Triangles();
      aNumOfTriangles += aTr->NbTriangles();

      if(aCount == aNumOfFace)
      {
        Standard_Integer aNbOfNodesOfFace = aTr->NbNodes();
        Standard_Integer aNbOfTrianglesOfFace = aTr->NbTriangles();
        aExpEdge.Init(aFace,TopAbs_EDGE);

        TopoDS_Edge aEdge;

        for( Standard_Integer i = 0; aExpEdge.More() && i < aNumOfEdge ; aExpEdge.Next(), i++)
          aEdge = TopoDS::Edge(aExpEdge.Current());

        if(!aEdge.IsNull())
        {
          Handle(Poly_PolygonOnTriangulation) aPol = 
            BRep_Tool::PolygonOnTriangulation(aEdge,aTr,aEdge.Location());

          if(!aPol.IsNull())
          {
            const TColStd_Array1OfInteger& aNodesOfPol = aPol->Nodes();
            Standard_Integer aNbOfNodesOfEdge = aPol->NbNodes();

            aText += "Number of nodes of the edge = ";
            aText += TCollection_AsciiString(aNbOfNodesOfEdge) + EOL;
            aText += "Number of nodes of the face = ";
            aText += TCollection_AsciiString(aNbOfNodesOfFace) + EOL;
            aText += "Number of triangles of the face = ";
            aText += TCollection_AsciiString(aNbOfTrianglesOfFace) + EOL;
            setResultText(aText.ToCString());  

            Standard_Integer aLower = aNodesOfPol.Lower(), anUpper = aNodesOfPol.Upper();
            for( i = aLower; i < anUpper ; i++)
            {
              gp_Pnt aPnt1 = aNodes(aNodesOfPol(i)).Transformed(aLocation);
              gp_Pnt aPnt2 = aNodes(aNodesOfPol(i+1)).Transformed(aLocation);
              TopoDS_Vertex aVertex1 = BRepBuilderAPI_MakeVertex (aPnt1);
              TopoDS_Vertex aVertex2 = BRepBuilderAPI_MakeVertex (aPnt2);

              if(!aVertex1.IsNull() && !aVertex2.IsNull() && // if vertices are "alive"
                !BRep_Tool::Pnt(aVertex1).IsEqual(
                BRep_Tool::Pnt(aVertex2),Precision::Confusion())) // if they are different
              {
                aEdge = BRepBuilderAPI_MakeEdge (aVertex1,aVertex2);
                aBuild2.Add(aComp2,aVertex1);
                if(!aEdge.IsNull())
                  aBuild2.Add(aComp2,aEdge);
                if(i == anUpper-1)
                  aBuild2.Add(aComp2,aVertex2);
              }
            }
      
            getAISContext()->EraseAll();
            aShowShape = drawShape(aShape);
            if(WAIT_A_SECOND) return;
            aShowEdge = drawShape(aComp2,Quantity_NOC_GREEN);
            getAISContext()->Erase(aShowShape);
            if(WAIT_A_SECOND) return;
          }
        }
      }
    

      TopTools_DataMapOfIntegerShape aEdges;
      TopTools_SequenceOfShape aVertices;

      for( Standard_Integer i = 1; i < aNodes.Length()+1; i++)
      {
        gp_Pnt aPnt = aNodes(i).Transformed(aLocation);
        TopoDS_Vertex aVertex = BRepBuilderAPI_MakeVertex(aPnt);

        if(!aVertex.IsNull())
        {
          aBuilder.Add(aCompound,aVertex);
          if(aCount == aNumOfFace ) 
            aBuild1.Add(aComp1,aVertex);
          aVertices.Append(aVertex);
        }
      }

      Standard_Integer nnn = aTr->NbTriangles();
      Standard_Integer nt,n1,n2,n3;

      for( nt = 1 ; nt < nnn+1 ; nt++)
      {     
        triangles(nt).Get(n1,n2,n3);

        Standard_Integer key[3];
        
        TopoDS_Vertex aV1,aV2;
        key[0] = _key(n1, n2);
        if(!aEdges.IsBound(key[0]))
        {
          aV1 = TopoDS::Vertex(aVertices(n1));
          aV2 = TopoDS::Vertex(aVertices(n2));
          if(!aV1.IsNull() && !aV2.IsNull() &&
            !BRep_Tool::Pnt(aV1).IsEqual(BRep_Tool::Pnt(aV2),Precision::Confusion()))
          {
            TopoDS_Edge aEdge = BRepBuilderAPI_MakeEdge (aV1,aV2);  
            if(!aEdge.IsNull())
            {
              aEdges.Bind(key[0], aEdge);
              aBuilder.Add(aCompound,aEdges(key[0]));
              if(aCount == aNumOfFace)
                aBuild1.Add(aComp1,aEdges(key[0]));
            } 
          }
        }
        
        key[1] = _key(n2,n3);
        if(!aEdges.IsBound(key[1])) 
        { 
          aV1 = TopoDS::Vertex(aVertices(n2));
          aV2 = TopoDS::Vertex(aVertices(n3));
          if(!aV1.IsNull() && !aV2.IsNull() &&
            !BRep_Tool::Pnt(aV1).IsEqual(BRep_Tool::Pnt(aV2),Precision::Confusion()))
          {
            TopoDS_Edge aEdge = BRepBuilderAPI_MakeEdge (aV1,aV2);  
            if(!aEdge.IsNull())
            {
              aEdges.Bind(key[1],aEdge);
              aBuilder.Add(aCompound,aEdges(key[1]));
              if(aCount == aNumOfFace) 
                aBuild1.Add(aComp1,aEdges(key[1]));
            } 
          } 
        } 
 
        key[2] = _key(n3,n1);
        if(!aEdges.IsBound(key[2])) 
        { 
          aV1 = TopoDS::Vertex(aVertices(n3));
          aV2 = TopoDS::Vertex(aVertices(n1));
          if(!aV1.IsNull() && !aV2.IsNull() &&
            !BRep_Tool::Pnt(aV1).IsEqual(BRep_Tool::Pnt(aV2),Precision::Confusion()))
          { 
            TopoDS_Edge aEdge = BRepBuilderAPI_MakeEdge (aV1,aV2);  
            if(!aEdge.IsNull())
            { 
              aEdges.Bind(key[2],aEdge);
              aBuilder.Add(aCompound,aEdges(key[2]));
              if(aCount == aNumOfFace) 
                aBuild1.Add(aComp1,aEdges(key[2]));
            } 
          } 
        } 
      } 
      
      if(aCount == aNumOfFace)
      {
        aShowFace = drawShape(aComp1,Quantity_NOC_GREEN);
        getAISContext()->Erase(aShowEdge);
      }
    }
    else
    {
      aText += "Can't compute a triangulation on face ";
      aText += TCollection_AsciiString(aCount) + EOL;
      setResultText(aText.ToCString());
    }
  }
  
  aText += "Number of nodes of the shape = ";
  aText += TCollection_AsciiString(aNumOfNodes) + EOL;
  aText += "Number of triangles of the shape = ";
  aText += TCollection_AsciiString(aNumOfTriangles) + EOL EOL;
  setResultText(aText.ToCString());

  if(WAIT_A_SECOND) return;
  drawShape(aCompound,Quantity_NOC_GREEN);
  getAISContext()->Erase(aShowFace);
  
}


void Tesselate_Presentation::sample(const Standard_CString aFileName)
{
  TCollection_AsciiString aPath(GetDataDir());
  aPath = aPath + "\\" + aFileName;

  ResetView();
  
  if (aFileName == "wedge_ok.brep"){
	SetViewCenter(6.3639597574916, 4.4907309380832);
	SetViewScale(52.722555157077); 
  }

  if (aFileName == "shell1.brep"){
	SetViewCenter(60.457553053711, -20.351208944076);
	SetViewScale(26.857478563027); 
  }

  if (aFileName == "Pump_Nut.brep"){
	SetViewCenter(248.77723166710, 77.249633819945);
	SetViewScale(12.371719671833); 
  }

  if (aFileName == "Pump_TopCover.brep"){
	SetViewCenter(408.72474423160, 169.38361094986);
	SetViewScale(2.1932732873087); 
  }
 
  TopoDS_Shape aShape;
  BRep_Builder aBld;
  Standard_Boolean isRead = BRepTools::Read (aShape, aPath.ToCString(), aBld);
  if (!isRead)
  {
    aPath += " was not found.  The sample can not be shown.";
    setResultText(aPath.ToCString());
    return;
  }

  tesselateShape (aShape);
}
Commit	Line	Data
7fd59977	1	// Tesselate_Presentation.cpp: implementation of the Tesselate_Presentation class.
	2	// Tesselate shapes.
	3	////////////////////////////////////////////////////////////////////////////
	4
	5	#include "stdafx.h"
	6	#include "Tesselate_Presentation.h"
	7
	8	#include <Precision.hxx>
	9	#include <TopoDS.hxx>
	10	#include <TopoDS_Edge.hxx>
	11	#include <TopoDS_Face.hxx>
	12	#include <TopoDS_Compound.hxx>
	13
	14	#include <BRep_Builder.hxx>
	15	#include <BRepTools.hxx>
	16	#include <BRep_Tool.hxx>
	17	#include <BRepMesh.hxx>
	18	#include <BRepBuilderAPI_MakeEdge.hxx>
	19	#include <BRepBuilderAPI_MakeVertex.hxx>
	20
	21	#include <TopExp_Explorer.hxx>
	22	#include <TopLoc_Location.hxx>
	23	#include <TopTools_DataMapOfIntegerShape.hxx>
	24	#include <TopTools_SequenceOfShape.hxx>
	25
	26	#include <Poly_Triangulation.hxx>
	27	#include <Poly_PolygonOnTriangulation.hxx>
	28	#include <Poly_Array1OfTriangle.hxx>
	29	#include <TColgp_Array1OfPnt.hxx>
	30	#include <TColStd_Array1OfInteger.hxx>
	31
	32	#include <gp_Pnt.hxx>
	33
	34
	35	#ifdef WNT
	36	#define EOL "\r\n"
	37	#else
	38	#define EOL "\n"
	39	#endif
	40
	41	// Initialization of global variable with an instance of this class
	42	OCCDemo_Presentation* OCCDemo_Presentation::Current = new Tesselate_Presentation;
	43
	44	// Initialization of array of samples
	45	Standard_CString Tesselate_Presentation::myFileNames[] =
	46	{
	47	"wedge_ok.brep",
	48	"shell1.brep",
	49	"Pump_Nut.brep",
	50	"Pump_TopCover.brep",
	51	0
	52	};
	53
	54	//////////////////////////////////////////////////////////////////////
	55	// Construction/Destruction
	56	//////////////////////////////////////////////////////////////////////
	57
	58	Tesselate_Presentation::Tesselate_Presentation()
	59	{
	60	for (myNbSamples = 0; myFileNames[myNbSamples]; myNbSamples++);
	61	setName ("Tesselate shapes");
	62	}
	63
	64	//////////////////////////////////////////////////////////////////////
65	// Sample execution
66	//////////////////////////////////////////////////////////////////////
67
68	void Tesselate_Presentation::DoSample()
69	{
70	getAISContext()->EraseAll();
71	if (myIndex >=0 && myIndex < myNbSamples)
72	sample (myFileNames[myIndex]);
73	}
74
75	//////////////////////////////////////////////////////////////////////
76	// Sample functions
77	//////////////////////////////////////////////////////////////////////
78	//================================================================
79
80	inline Standard_Integer _key(Standard_Integer n1,Standard_Integer n2)
81	{
82
83	Standard_Integer key =
84	(n2>n1)?(n1<<16)+n2:(n2<<16)+n1;
85	return key;
86	}
87
88	//DATA : [myIndex][{Deflection,NumberOfFace,NumberOfEdge}]
89	static const Standard_Real DATA [][3] =
90	{
91	{0.2,1,2},{0.5,6,2},{0.7,16,2},{1,1,2}
92	};
93
94
95	void Tesselate_Presentation::tesselateShape(const TopoDS_Shape& aShape)
96	{
97	setResultTitle("Tesselate shape");
98	TCollection_AsciiString aText = (
99	"/////////////////////////////////////////////////////////////////" EOL
100	"// Tesselate shape." EOL
101	"/////////////////////////////////////////////////////////////////" EOL EOL
102	) ;
103
104	Standard_Real aDeflection = DATA[myIndex][0];
105	Standard_Integer aNumOfFace = (Standard_Integer)DATA[myIndex][1];
106	Standard_Integer aNumOfEdge = (Standard_Integer)DATA[myIndex][2];
107
108	aText +=
109	"Standard_Real aDeflection;" EOL
110	"// aDeflection = ... ;" EOL EOL
111
112	"// removes all the triangulations of the faces ," EOL
113	"//and all the polygons on the triangulations of the edges:" EOL
114	"BRepTools::Clean(aShape);" EOL EOL
115
116	"// adds a triangulation of the shape aShape with the deflection aDeflection:" EOL
117	"BRepMesh::Mesh(aShape,aDeflection);" EOL EOL
118
119	"TopExp_Explorer aExpFace,aExpEdge;" EOL
120	"for(aExpFace.Init(aShape,TopAbs_FACE);aExpFace.More();aExpFace.Next())" EOL
121	"{ " EOL
122	" TopoDS_Face aFace = TopoDS::Face(aExpFace.Current());" EOL
123	" TopLoc_Location aLocation;" EOL EOL
124
125	" // takes the triangulation of the face aFace:" EOL
92efcf78	126	" Handle(Poly_Triangulation) aTr = BRep_Tool::Triangulation(aFace,aLocation);" EOL EOL
7fd59977	127
	128	" if(!aTr.IsNull()) // if this triangulation is not NULL" EOL
	129	" { " EOL
	130	" // takes the array of nodes for this triangulation:" EOL
	131	" const TColgp_Array1OfPnt& aNodes = aTr->Nodes();" EOL
	132	" // takes the array of triangles for this triangulation:" EOL
	133	" const Poly_Array1OfTriangle& triangles = aTr->Triangles();" EOL EOL
	134
	135	" // create array of node points in absolute coordinate system" EOL
	136	" TColgp_Array1OfPnt aPoints(1, aNodes.Length());" EOL
	137	" for( Standard_Integer i = 1; i < aNodes.Length()+1; i++)" EOL
	138	" aPoints(i) = aNodes(i).Transformed(aLocation);" EOL EOL
	139
	140	" // Takes the node points of each triangle of this triangulation." EOL
	141	" // takes a number of triangles:" EOL
	142	" Standard_Integer nnn = aTr->NbTriangles();" EOL
	143	" Standard_Integer nt,n1,n2,n3;" EOL
	144	" for( nt = 1 ; nt < nnn+1 ; nt++)" EOL
	145	" {" EOL
	146	" // takes the node indices of each triangle in n1,n2,n3:" EOL
	147	" triangles(nt).Get(n1,n2,n3);" EOL
	148	" // takes the node points:" EOL
	149	" gp_Pnt aPnt1 = aPoints(n1);" EOL
	150	" gp_Pnt aPnt2 = aPoints(n2);" EOL
	151	" gp_Pnt aPnt3 = aPoints(n3);" EOL
	152	" } " EOL EOL
	153
	154	" // Takes the polygon associated to an edge." EOL
	155	" aExpEdge.Init(aFace,TopAbs_EDGE);" EOL
	156	" TopoDS_Edge aEdge;" EOL
	157	" // for example,working with the first edge:" EOL
	158	" if(aExpEdge.More())" EOL
	159	" aEdge = TopoDS::Edge(aExpEdge.Current());" EOL EOL
	160
	161	" if(!aEdge.IsNull()) // if this edge is not NULL" EOL
	162	" {" EOL
	163	" // takes the polygon associated to the edge aEdge:" EOL
92efcf78	164	" Handle(Poly_PolygonOnTriangulation) aPol = " EOL
7fd59977	165	" BRep_Tool::PolygonOnTriangulation(aEdge,aTr,aEdge.Location());" EOL EOL
	166
	167	" if(!aPol.IsNull()) // if this polygon is not NULL" EOL
	168	" // takes the array of nodes for this polygon" EOL
	169	" // (indexes in the array of nodes for triangulation of theFace):" EOL
	170	" const TColStd_Array1OfInteger& aNodesOfPol = aPol->Nodes();" EOL
	171	" }" EOL
	172	" }" EOL
	173	"}" EOL EOL
	174
	175	"//==================================================" EOL EOL
	176
	177	;
	178	aText += " Result with deflection = ";
	179	aText += TCollection_AsciiString(aDeflection);
	180	aText += " :" EOL;
	181
	182	setResultText(aText.ToCString());
	183
	184	//==========================================================================
	185
	186	BRepTools::Clean(aShape);
	187	BRepMesh::Mesh(aShape,aDeflection);
	188
	189	BRep_Builder aBuilder,aBuild1,aBuild2;
	190	TopoDS_Compound aCompound,aComp1,aComp2;
	191	aBuilder.MakeCompound(aCompound);
	192	aBuild1.MakeCompound(aComp1);
	193	aBuild2.MakeCompound(aComp2);
	194
	195	TopTools_SequenceOfShape aVertices;
	196	Standard_Integer aCount = 0;
	197	Standard_Integer aNumOfNodes = 0;
	198	Standard_Integer aNumOfTriangles = 0;
	199
92efcf78	200	Handle(AIS_InteractiveObject) aShowEdge,aShowFace,aShowShape;
7fd59977	201
	202	TopExp_Explorer aExpFace,aExpEdge;
	203
	204	for(aExpFace.Init(aShape,TopAbs_FACE);aExpFace.More();aExpFace.Next())
	205	{
	206	aCount++;
	207
	208	TopoDS_Face aFace = TopoDS::Face(aExpFace.Current());
	209	TopLoc_Location aLocation;
	210
92efcf78	211	Handle(Poly_Triangulation) aTr = BRep_Tool::Triangulation(aFace,aLocation);
7fd59977	212
	213	if(!aTr.IsNull())
	214	{
	215	const TColgp_Array1OfPnt& aNodes = aTr->Nodes();
	216	aNumOfNodes += aTr->NbNodes();
	217	Standard_Integer aLower = aNodes.Lower();
	218	Standard_Integer anUpper = aNodes.Upper();
	219	const Poly_Array1OfTriangle& triangles = aTr->Triangles();
	220	aNumOfTriangles += aTr->NbTriangles();
	221
	222	if(aCount == aNumOfFace)
	223	{
	224	Standard_Integer aNbOfNodesOfFace = aTr->NbNodes();
	225	Standard_Integer aNbOfTrianglesOfFace = aTr->NbTriangles();
	226	aExpEdge.Init(aFace,TopAbs_EDGE);
	227
	228	TopoDS_Edge aEdge;
	229
	230	for( Standard_Integer i = 0; aExpEdge.More() && i < aNumOfEdge ; aExpEdge.Next(), i++)
	231	aEdge = TopoDS::Edge(aExpEdge.Current());
	232
	233	if(!aEdge.IsNull())
	234	{
92efcf78	235	Handle(Poly_PolygonOnTriangulation) aPol =
7fd59977	236	BRep_Tool::PolygonOnTriangulation(aEdge,aTr,aEdge.Location());
	237
	238	if(!aPol.IsNull())
	239	{
	240	const TColStd_Array1OfInteger& aNodesOfPol = aPol->Nodes();
	241	Standard_Integer aNbOfNodesOfEdge = aPol->NbNodes();
	242
	243	aText += "Number of nodes of the edge = ";
	244	aText += TCollection_AsciiString(aNbOfNodesOfEdge) + EOL;
	245	aText += "Number of nodes of the face = ";
	246	aText += TCollection_AsciiString(aNbOfNodesOfFace) + EOL;
	247	aText += "Number of triangles of the face = ";
	248	aText += TCollection_AsciiString(aNbOfTrianglesOfFace) + EOL;
	249	setResultText(aText.ToCString());
	250
	251	Standard_Integer aLower = aNodesOfPol.Lower(), anUpper = aNodesOfPol.Upper();
	252	for( i = aLower; i < anUpper ; i++)
	253	{
	254	gp_Pnt aPnt1 = aNodes(aNodesOfPol(i)).Transformed(aLocation);
	255	gp_Pnt aPnt2 = aNodes(aNodesOfPol(i+1)).Transformed(aLocation);
	256	TopoDS_Vertex aVertex1 = BRepBuilderAPI_MakeVertex (aPnt1);
	257	TopoDS_Vertex aVertex2 = BRepBuilderAPI_MakeVertex (aPnt2);
	258
	259	if(!aVertex1.IsNull() && !aVertex2.IsNull() && // if vertices are "alive"
	260	!BRep_Tool::Pnt(aVertex1).IsEqual(
	261	BRep_Tool::Pnt(aVertex2),Precision::Confusion())) // if they are different
	262	{
	263	aEdge = BRepBuilderAPI_MakeEdge (aVertex1,aVertex2);
	264	aBuild2.Add(aComp2,aVertex1);
	265	if(!aEdge.IsNull())
	266	aBuild2.Add(aComp2,aEdge);
	267	if(i == anUpper-1)
	268	aBuild2.Add(aComp2,aVertex2);
	269	}
	270	}
	271
	272	getAISContext()->EraseAll();
	273	aShowShape = drawShape(aShape);
	274	if(WAIT_A_SECOND) return;
	275	aShowEdge = drawShape(aComp2,Quantity_NOC_GREEN);
	276	getAISContext()->Erase(aShowShape);
	277	if(WAIT_A_SECOND) return;
	278	}
	279	}
	280	}
	281
	282
	283	TopTools_DataMapOfIntegerShape aEdges;
	284	TopTools_SequenceOfShape aVertices;
	285
	286	for( Standard_Integer i = 1; i < aNodes.Length()+1; i++)
	287	{
	288	gp_Pnt aPnt = aNodes(i).Transformed(aLocation);
	289	TopoDS_Vertex aVertex = BRepBuilderAPI_MakeVertex(aPnt);
	290
	291	if(!aVertex.IsNull())
	292	{
	293	aBuilder.Add(aCompound,aVertex);
	294	if(aCount == aNumOfFace )
	295	aBuild1.Add(aComp1,aVertex);
	296	aVertices.Append(aVertex);
	297	}
	298	}
	299
300	Standard_Integer nnn = aTr->NbTriangles();
301	Standard_Integer nt,n1,n2,n3;
302
303	for( nt = 1 ; nt < nnn+1 ; nt++)
304	{
305	triangles(nt).Get(n1,n2,n3);
306
307	Standard_Integer key[3];
308
309	TopoDS_Vertex aV1,aV2;
310	key[0] = _key(n1, n2);
311	if(!aEdges.IsBound(key[0]))
312	{
313	aV1 = TopoDS::Vertex(aVertices(n1));
314	aV2 = TopoDS::Vertex(aVertices(n2));
315	if(!aV1.IsNull() && !aV2.IsNull() &&
316	!BRep_Tool::Pnt(aV1).IsEqual(BRep_Tool::Pnt(aV2),Precision::Confusion()))
317	{
318	TopoDS_Edge aEdge = BRepBuilderAPI_MakeEdge (aV1,aV2);
319	if(!aEdge.IsNull())
320	{
321	aEdges.Bind(key[0], aEdge);
322	aBuilder.Add(aCompound,aEdges(key[0]));
323	if(aCount == aNumOfFace)
324	aBuild1.Add(aComp1,aEdges(key[0]));
325	}
326	}
327	}
328
329	key[1] = _key(n2,n3);
330	if(!aEdges.IsBound(key[1]))
331	{
332	aV1 = TopoDS::Vertex(aVertices(n2));
333	aV2 = TopoDS::Vertex(aVertices(n3));
334	if(!aV1.IsNull() && !aV2.IsNull() &&
335	!BRep_Tool::Pnt(aV1).IsEqual(BRep_Tool::Pnt(aV2),Precision::Confusion()))
336	{
337	TopoDS_Edge aEdge = BRepBuilderAPI_MakeEdge (aV1,aV2);
338	if(!aEdge.IsNull())
339	{
340	aEdges.Bind(key[1],aEdge);
341	aBuilder.Add(aCompound,aEdges(key[1]));
342	if(aCount == aNumOfFace)
343	aBuild1.Add(aComp1,aEdges(key[1]));
344	}
345	}
346	}
347
348	key[2] = _key(n3,n1);
349	if(!aEdges.IsBound(key[2]))
350	{
351	aV1 = TopoDS::Vertex(aVertices(n3));
352	aV2 = TopoDS::Vertex(aVertices(n1));
353	if(!aV1.IsNull() && !aV2.IsNull() &&
354	!BRep_Tool::Pnt(aV1).IsEqual(BRep_Tool::Pnt(aV2),Precision::Confusion()))
355	{
356	TopoDS_Edge aEdge = BRepBuilderAPI_MakeEdge (aV1,aV2);
357	if(!aEdge.IsNull())
358	{
359	aEdges.Bind(key[2],aEdge);
360	aBuilder.Add(aCompound,aEdges(key[2]));
361	if(aCount == aNumOfFace)
362	aBuild1.Add(aComp1,aEdges(key[2]));
363	}
364	}
365	}
366	}
367
368	if(aCount == aNumOfFace)
369	{
370	aShowFace = drawShape(aComp1,Quantity_NOC_GREEN);
371	getAISContext()->Erase(aShowEdge);
372	}
373	}
374	else
375	{
376	aText += "Can't compute a triangulation on face ";
377	aText += TCollection_AsciiString(aCount) + EOL;
378	setResultText(aText.ToCString());
379	}
380	}
381
382	aText += "Number of nodes of the shape = ";
383	aText += TCollection_AsciiString(aNumOfNodes) + EOL;
384	aText += "Number of triangles of the shape = ";
385	aText += TCollection_AsciiString(aNumOfTriangles) + EOL EOL;
386	setResultText(aText.ToCString());
387
388	if(WAIT_A_SECOND) return;
389	drawShape(aCompound,Quantity_NOC_GREEN);
390	getAISContext()->Erase(aShowFace);
391
392	}
393
394
395	void Tesselate_Presentation::sample(const Standard_CString aFileName)
396	{
397	TCollection_AsciiString aPath(GetDataDir());
398	aPath = aPath + "\\" + aFileName;
399
400	ResetView();
401
402	if (aFileName == "wedge_ok.brep"){
403	SetViewCenter(6.3639597574916, 4.4907309380832);
404	SetViewScale(52.722555157077);
405	}
406
407	if (aFileName == "shell1.brep"){
408	SetViewCenter(60.457553053711, -20.351208944076);
409	SetViewScale(26.857478563027);
410	}
411
412	if (aFileName == "Pump_Nut.brep"){
413	SetViewCenter(248.77723166710, 77.249633819945);
414	SetViewScale(12.371719671833);
415	}
416
417	if (aFileName == "Pump_TopCover.brep"){
418	SetViewCenter(408.72474423160, 169.38361094986);
419	SetViewScale(2.1932732873087);
420	}
421
422	TopoDS_Shape aShape;
423	BRep_Builder aBld;
424	Standard_Boolean isRead = BRepTools::Read (aShape, aPath.ToCString(), aBld);
425	if (!isRead)
426	{
427	aPath += " was not found. The sample can not be shown.";
428	setResultText(aPath.ToCString());
429	return;
430	}
431
432	tesselateShape (aShape);
433	}