src/DsgPrs/DsgPrs_TangentPresentation.cxx

   1 // Created on: 1996-01-16
   2 // Created by: Jean-Pierre COMBE
   3 // Copyright (c) 1996-1999 Matra Datavision
   4 // Copyright (c) 1999-2014 OPEN CASCADE SAS
   5 //
   6 // This file is part of Open CASCADE Technology software library.
   7 //
   8 // This library is free software; you can redistribute it and/or modify it under
   9 // the terms of the GNU Lesser General Public License version 2.1 as published
  10 // by the Free Software Foundation, with special exception defined in the file
  11 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
  12 // distribution for complete text of the license and disclaimer of any warranty.
  13 //
  14 // Alternatively, this file may be used under the terms of Open CASCADE
  15 // commercial license or contractual agreement.
  16
  17 #include <DsgPrs_TangentPresentation.ixx>
  18
  19 #include <Graphic3d_Group.hxx>
  20 #include <Graphic3d_ArrayOfSegments.hxx>
  21 #include <Prs3d_Arrow.hxx>
  22 #include <Prs3d_ArrowAspect.hxx>
  23 #include <Prs3d_LineAspect.hxx>
  24 #include <Prs3d_DimensionAspect.hxx>
  25 #include <Graphic3d_AspectLine3d.hxx>
  26 #include <Prs3d_PointAspect.hxx>
  27 #include <Geom_CartesianPoint.hxx>
  28 #include <StdPrs_Point.hxx>
  29 #include <gp_Vec.hxx>
  30 #include <Prs3d_Arrow.hxx>
  31
  32 void DsgPrs_TangentPresentation::Add (const Handle(Prs3d_Presentation)& aPresentation,
  33                                       const Handle(Prs3d_Drawer)& aDrawer,
  34                                       const gp_Pnt& OffsetPoint,
  35                                       const gp_Dir& aDirection,
  36                                       const Standard_Real length)
  37 {
  38   gp_Vec vec(aDirection);
  39   gp_Vec vec1 = vec.Multiplied(length);
  40   gp_Vec vec2 = vec.Multiplied(-length);
  41   gp_Pnt p1 = OffsetPoint.Translated(vec1);
  42   gp_Pnt p2 = OffsetPoint.Translated(vec2);
  43
  44   // Aspect
  45   Handle(Prs3d_DimensionAspect) LA = aDrawer->DimensionAspect();
  46   LA->LineAspect()->SetTypeOfLine(Aspect_TOL_SOLID);
  47   Handle(Prs3d_ArrowAspect) ARR1 = LA->ArrowAspect();
  48   Handle(Prs3d_ArrowAspect) ARR2 = LA->ArrowAspect();
  49   ARR1->SetLength(length/5);
  50   ARR2->SetLength(length/5);
  51
  52   // Array1OfVertex
  53   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  54
  55   Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
  56   aPrims->AddVertex(p1);
  57   aPrims->AddVertex(p2);
  58   Prs3d_Root::CurrentGroup(aPresentation)->AddPrimitiveArray(aPrims);
  59
  60   // fleche 1 :
  61   Prs3d_Root::NewGroup(aPresentation);
  62   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  63   Prs3d_Arrow::Draw(aPresentation,p1,aDirection,LA->ArrowAspect()->Angle(),LA->ArrowAspect()->Length());
  64
  65   // fleche 2
  66   Prs3d_Root::NewGroup(aPresentation);
  67   Prs3d_Root::CurrentGroup(aPresentation)->SetPrimitivesAspect(LA->LineAspect()->Aspect());
  68   Prs3d_Arrow::Draw(aPresentation,p2,aDirection.Reversed(),LA->ArrowAspect()->Angle(),LA->ArrowAspect()->Length());
  69 }