src/DsgPrs/DsgPrs_MidPointPresentation.cxx

   1 // Created on: 2000-10-20
   2 // Created by: Julia DOROVSKIKH
   3 // Copyright (c) 2000-2014 OPEN CASCADE SAS
   4 //
   5 // This file is part of Open CASCADE Technology software library.
   6 //
   7 // This library is free software; you can redistribute it and/or modify it under
   8 // the terms of the GNU Lesser General Public License version 2.1 as published
   9 // by the Free Software Foundation, with special exception defined in the file
  10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
  11 // distribution for complete text of the license and disclaimer of any warranty.
  12 //
  13 // Alternatively, this file may be used under the terms of Open CASCADE
  14 // commercial license or contractual agreement.
  15
  16
  17 #include <DsgPrs_MidPointPresentation.hxx>
  18 #include <ElCLib.hxx>
  19 #include <gp_Ax1.hxx>
  20 #include <gp_Ax2.hxx>
  21 #include <gp_Circ.hxx>
  22 #include <gp_Dir.hxx>
  23 #include <gp_Elips.hxx>
  24 #include <gp_Lin.hxx>
  25 #include <gp_Pnt.hxx>
  26 #include <gp_Vec.hxx>
  27 #include <Graphic3d_ArrayOfPolylines.hxx>
  28 #include <Graphic3d_ArrayOfSegments.hxx>
  29 #include <Graphic3d_AspectLine3d.hxx>
  30 #include <Graphic3d_Group.hxx>
  31 #include <Precision.hxx>
  32 #include <Prs3d_DimensionAspect.hxx>
  33 #include <Prs3d_LineAspect.hxx>
  34 #include <Prs3d_Presentation.hxx>
  35 #include <Prs3d_Root.hxx>
  36 #include <Prs3d_Text.hxx>
  37 #include <TCollection_ExtendedString.hxx>
  38
  39 //===================================================================
  40 //Function:Add
  41 //Purpose: draws the representation of a radial symmetry between two vertices.
  42 //===================================================================
  43 void DsgPrs_MidPointPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
  44                                        const Handle(Prs3d_Drawer)& aDrawer,
  45                                        const gp_Ax2&  theAxe,
  46                                        const gp_Pnt&  MidPoint,
  47                                        const gp_Pnt&  Position,
  48                                        const gp_Pnt&  AttachPoint,
  49                                        const Standard_Boolean first)
  50 {
  51   Standard_Real rad = AttachPoint.Distance(MidPoint)/20.0;
  52
  53   Handle(Prs3d_DimensionAspect) LA = aDrawer->DimensionAspect();
  54
  55   gp_Ax2 ax = theAxe;
  56   ax.SetLocation(MidPoint);
  57   gp_Circ aCircleM (ax,rad);
  58
  59   if ( first )
  60   {
  61     // center of the symmetry - circle around the MidPoint
  62     Prs3d_Root::NewGroup(aPresentation);
  63     Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  64
  65     const Standard_Real alpha = 2. * M_PI;
  66     const Standard_Integer nbp = 100;
  67     const Standard_Real dteta = alpha/(nbp-1);
  68
  69     Handle(Graphic3d_ArrayOfPolylines) aPrims = new Graphic3d_ArrayOfPolylines(nbp+2,2);
  70     aPrims->AddBound(nbp);
  71     for (Standard_Integer i = 1; i <= nbp; i++)
  72       aPrims->AddVertex(ElCLib::Value(dteta*(i-1),aCircleM));
  73
  74     // segment from mid point to the text position
  75     aPrims->AddBound(2);
  76     aPrims->AddVertex(Position.IsEqual(MidPoint,rad)? MidPoint : ElCLib::Value(ElCLib::Parameter(aCircleM,Position),aCircleM)); // mid point
  77     aPrims->AddVertex(Position); // text position
  78
  79         Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
  80
  81     // texte
  82     TCollection_ExtendedString aText(" (+)");
  83     Prs3d_Text::Draw (Prs3d_Root::CurrentGroup (aPresentation), LA->TextAspect(), aText, Position);
  84   }
  85
  86   if ( !AttachPoint.IsEqual(MidPoint, Precision::Confusion()) )
  87   {
  88     if ( !first )
  89     {
  90       Prs3d_Root::NewGroup(aPresentation);
  91       Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  92     }
  93
  94     // segment from mid point to the geometry
  95     Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
  96     aPrims->AddVertex(ElCLib::Value(ElCLib::Parameter(aCircleM,AttachPoint),aCircleM)); // mid point
  97     aPrims->AddVertex(AttachPoint); // attach point to the geometry
  98     Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
  99   }
 100 }
 101
 102 //===================================================================
 103 //Function:Add
 104 //Purpose: draws the representation of a radial symmetry between two linear segments.
 105 //===================================================================
 106 void DsgPrs_MidPointPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
 107                                        const Handle(Prs3d_Drawer)& aDrawer,
 108                                        const gp_Ax2&  theAxe,
 109                                        const gp_Pnt&  MidPoint,
 110                                        const gp_Pnt&  Position,
 111                                        const gp_Pnt&  AttachPoint,
 112                                        const gp_Pnt&  Point1,
 113                                        const gp_Pnt&  Point2,
 114                                        const Standard_Boolean first)
 115 {
 116   Standard_Real rad = AttachPoint.Distance(MidPoint)/20.0;
 117   if ( rad <= Precision::Confusion() ) rad = Point1.Distance(Point2)/20.0;
 118
 119   Handle(Prs3d_DimensionAspect) LA = aDrawer->DimensionAspect();
 120
 121   gp_Ax2 ax = theAxe;
 122   ax.SetLocation(MidPoint);
 123   gp_Circ aCircleM (ax,rad);
 124
 125   // segment on line
 126   Prs3d_Root::NewGroup(aPresentation);
 127   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
 128
 129   Handle(Graphic3d_ArrayOfPrimitives) aPrims = new Graphic3d_ArrayOfSegments(2);
 130   aPrims->AddVertex(Point1);
 131   aPrims->AddVertex(Point2);
 132   Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 133
 134   if ( first )
 135   {
 136     // center of the symmetry - circle around the MidPoint
 137     const Standard_Real alpha = 2. * M_PI;
 138     const Standard_Integer nbp = 100;
 139     const Standard_Real dteta = alpha/(nbp-1);
 140
 141     aPrims = new Graphic3d_ArrayOfPolylines(nbp+2,2);
 142     aPrims->AddBound(nbp);
 143     for (Standard_Integer i = 1; i <= nbp; i++)
 144       aPrims->AddVertex(ElCLib::Value(dteta*(i-1),aCircleM));
 145
 146     // segment from mid point to the text position
 147     aPrims->AddBound(2);
 148     aPrims->AddVertex(Position.IsEqual(MidPoint,rad)? MidPoint : ElCLib::Value(ElCLib::Parameter(aCircleM,Position),aCircleM)); // mid point
 149     aPrims->AddVertex(Position); // text position
 150
 151         Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 152
 153     // texte
 154     TCollection_ExtendedString aText (" (+)");
 155     Prs3d_Text::Draw (Prs3d_Root::CurrentGroup (aPresentation), LA->TextAspect(), aText, Position);
 156   }
 157
 158   if ( !AttachPoint.IsEqual(MidPoint, Precision::Confusion()) )
 159   {
 160     // mid point
 161     aPrims = new Graphic3d_ArrayOfSegments(2);
 162     aPrims->AddVertex(ElCLib::Value(ElCLib::Parameter(aCircleM,AttachPoint),aCircleM));
 163     aPrims->AddVertex(AttachPoint); // attach point to the geometry
 164     Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 165   }
 166 }
 167
 168 //===================================================================
 169 //Function:Add
 170 //Purpose: draws the representation of a radial symmetry between two circular arcs.
 171 //===================================================================
 172 void DsgPrs_MidPointPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
 173                                        const Handle(Prs3d_Drawer)& aDrawer,
 174                                        const gp_Circ& aCircle,
 175                                        const gp_Pnt&  MidPoint,
 176                                        const gp_Pnt&  Position,
 177                                        const gp_Pnt&  AttachPoint,
 178                                        const gp_Pnt&  Point1,
 179                                        const gp_Pnt&  Point2,
 180                                        const Standard_Boolean first)
 181 {
 182   Standard_Real rad = AttachPoint.Distance(MidPoint)/20.0;
 183   if ( rad <= Precision::Confusion() ) rad = Point1.Distance(Point2)/20.0;
 184
 185   Handle(Prs3d_DimensionAspect) LA = aDrawer->DimensionAspect();
 186
 187   gp_Ax2 ax = aCircle.Position();
 188   ax.SetLocation(MidPoint);
 189   gp_Circ aCircleM (ax,rad);
 190
 191   // segment on circle
 192   Prs3d_Root::NewGroup(aPresentation);
 193   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
 194
 195   const Standard_Real pf = ElCLib::Parameter(aCircle,Point1);
 196   const Standard_Real pl = ElCLib::Parameter(aCircle,Point2);
 197   Standard_Real alpha = pl - pf;
 198   if ( alpha < 0 ) alpha += 2. * M_PI;
 199   const Standard_Integer nb = (Standard_Integer)(50.0*alpha/M_PI);
 200   Standard_Integer nbp = Max(4,nb);
 201   Standard_Real dteta = alpha/(nbp-1);
 202
 203   Handle(Graphic3d_ArrayOfPrimitives) aPrims = new Graphic3d_ArrayOfPolylines(nbp);
 204   for (Standard_Integer i = 1; i <= nbp; i++)
 205     aPrims->AddVertex(ElCLib::Value(pf + dteta*(i-1),aCircle));
 206   Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 207
 208   if ( first )
 209   {
 210     // center of the symmetry - circle around the MidPoint
 211     alpha = 2. * M_PI;
 212     nbp = 100;
 213     dteta = alpha/(nbp-1);
 214
 215     aPrims = new Graphic3d_ArrayOfPolylines(nbp+2,2);
 216     aPrims->AddBound(nbp);
 217     for (Standard_Integer i = 1; i <= nbp; i++)
 218       aPrims->AddVertex(ElCLib::Value(dteta*(i-1),aCircleM));
 219
 220     // segment from mid point to the text position
 221     aPrims->AddBound(2);
 222     aPrims->AddVertex(Position.IsEqual(MidPoint,rad)? MidPoint : ElCLib::Value(ElCLib::Parameter(aCircleM,Position),aCircleM)); // mid point
 223     aPrims->AddVertex(Position); // text position
 224
 225         Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 226
 227     // texte
 228     TCollection_ExtendedString aText (" (+)");
 229     Prs3d_Text::Draw (Prs3d_Root::CurrentGroup (aPresentation), LA->TextAspect(), aText, Position);
 230   }
 231
 232   if ( !AttachPoint.IsEqual(MidPoint, Precision::Confusion()) )
 233   {
 234     // segment from mid point to the geometry
 235     aPrims = new Graphic3d_ArrayOfSegments(2);
 236     aPrims->AddVertex(ElCLib::Value(ElCLib::Parameter(aCircleM,AttachPoint),aCircleM)); // mid point
 237     aPrims->AddVertex(AttachPoint); // attach point to the geometry
 238     Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 239   }
 240 }
 241
 242 //===================================================================
 243 //Function:Add
 244 //Purpose: draws the representation of a radial symmetry between two elliptic arcs.
 245 //===================================================================
 246 void DsgPrs_MidPointPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
 247                                        const Handle(Prs3d_Drawer)& aDrawer,
 248                                        const gp_Elips& aCircle,
 249                                        const gp_Pnt&   MidPoint,
 250                                        const gp_Pnt&   Position,
 251                                        const gp_Pnt&   AttachPoint,
 252                                        const gp_Pnt&   Point1,
 253                                        const gp_Pnt&   Point2,
 254                                        const Standard_Boolean first)
 255 {
 256   Standard_Real rad = AttachPoint.Distance(MidPoint)/20.0;
 257   if ( rad <= Precision::Confusion() ) rad = Point1.Distance(Point2)/20.0;
 258
 259   Handle(Prs3d_DimensionAspect) LA = aDrawer->DimensionAspect();
 260
 261   gp_Pnt Ptmp,ptcur;
 262
 263   gp_Ax2 ax = aCircle.Position();
 264   ax.SetLocation(MidPoint);
 265   gp_Circ aCircleM (ax,rad);
 266
 267   // segment on ellipse
 268   Prs3d_Root::NewGroup(aPresentation);
 269   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
 270
 271   const Standard_Real pf = ElCLib::Parameter(aCircle,Point1);
 272   const Standard_Real pl = ElCLib::Parameter(aCircle,Point2);
 273   Standard_Real alpha = pl - pf;
 274   if ( alpha < 0 ) alpha += 2 * M_PI;
 275   const Standard_Integer nb = (Standard_Integer)(50.0*alpha/M_PI);
 276   Standard_Integer nbp = Max(4,nb);
 277   Standard_Real dteta = alpha/(nbp-1);
 278
 279   Handle(Graphic3d_ArrayOfPrimitives) aPrims = new Graphic3d_ArrayOfPolylines(nbp);
 280   for (Standard_Integer i = 1; i <= nbp; i++)
 281     aPrims->AddVertex(ElCLib::Value(pf + dteta*(i-1),aCircle));
 282   Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 283
 284   if ( first )
 285   {
 286     // center of the symmetry - circle around the MidPoint
 287     alpha = 2. * M_PI;
 288     nbp = 100;
 289     dteta = alpha/(nbp-1);
 290
 291     aPrims = new Graphic3d_ArrayOfPolylines(nbp+2,2);
 292     aPrims->AddBound(nbp);
 293     for (Standard_Integer i = 1; i <= nbp; i++)
 294       aPrims->AddVertex(ElCLib::Value(dteta*(i-1),aCircleM));
 295
 296     // segment from mid point to the text position
 297     aPrims->AddBound(2);
 298         aPrims->AddVertex(Position.IsEqual(MidPoint,rad)? MidPoint : ElCLib::Value(ElCLib::Parameter(aCircleM,Position),aCircleM)); // mid point
 299     aPrims->AddVertex(Position); // text position
 300
 301         Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 302
 303     // texte
 304     TCollection_ExtendedString aText (" (+)");
 305     Prs3d_Text::Draw (Prs3d_Root::CurrentGroup (aPresentation), LA->TextAspect(), aText, Position);
 306   }
 307
 308   if ( !AttachPoint.IsEqual(MidPoint, Precision::Confusion()) )
 309   {
 310     // segment from mid point to the geometry
 311     aPrims = new Graphic3d_ArrayOfSegments(2);
 312     aPrims->AddVertex(ElCLib::Value(ElCLib::Parameter(aCircleM,AttachPoint),aCircleM)); // mid point
 313     aPrims->AddVertex(AttachPoint); // attach point to the geometry
 314     Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
 315   }
 316 }