src/IGESDraw/IGESDraw_Drawing.cxx

   1 // Created by: CKY / Contract Toubro-Larsen
   2 // Copyright (c) 1993-1999 Matra Datavision
   3 // Copyright (c) 1999-2014 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 //--------------------------------------------------------------------
  18
  19 #include <gp_Pnt2d.hxx>
  20 #include <gp_XY.hxx>
  21 #include <gp_XYZ.hxx>
  22 #include <IGESData_IGESEntity.hxx>
  23 #include <IGESData_ViewKindEntity.hxx>
  24 #include <IGESDraw_Drawing.hxx>
  25 #include <IGESDraw_PerspectiveView.hxx>
  26 #include <IGESDraw_View.hxx>
  27 #include <IGESGraph_DrawingSize.hxx>
  28 #include <IGESGraph_DrawingUnits.hxx>
  29 #include <Interface_Macros.hxx>
  30 #include <Standard_DimensionMismatch.hxx>
  31 #include <Standard_OutOfRange.hxx>
  32 #include <Standard_Type.hxx>
  33
  34 IMPLEMENT_STANDARD_RTTIEXT(IGESDraw_Drawing,IGESData_IGESEntity)
  35
  36 IGESDraw_Drawing::IGESDraw_Drawing ()    {  }
  37
  38
  39     void IGESDraw_Drawing::Init
  40   (const Handle(IGESDraw_HArray1OfViewKindEntity)& allViews,
  41    const Handle(TColgp_HArray1OfXY)&               allViewOrigins,
  42    const Handle(IGESData_HArray1OfIGESEntity)&     allAnnotations)
  43 {
  44   if (!allViews.IsNull()) {
  45     Standard_Integer Len  = allViews->Length();
  46     Standard_Boolean Flag = ( allViewOrigins->Length() == Len );
  47     if (!Flag || allViews->Lower() != 1 || allViewOrigins->Lower() != 1)
  48       Standard_DimensionMismatch::Raise("IGESDraw_Drawing : Init");
  49   }
  50   if (!allAnnotations.IsNull())
  51     if (allAnnotations->Lower() != 1) Standard_DimensionMismatch::Raise
  52       ("IGESDraw_Drawing : Init");
  53
  54   theViews         = allViews;
  55   theViewOrigins   = allViewOrigins;
  56   theAnnotations   = allAnnotations;
  57   InitTypeAndForm(404,0);
  58 }
  59
  60     Standard_Integer IGESDraw_Drawing::NbViews () const
  61 {
  62   return (theViews.IsNull() ? 0 : theViews->Length());
  63 }
  64
  65     Handle(IGESData_ViewKindEntity) IGESDraw_Drawing::ViewItem
  66   (const Standard_Integer ViewIndex) const
  67 {
  68   return theViews->Value(ViewIndex);
  69 }
  70
  71     gp_Pnt2d IGESDraw_Drawing::ViewOrigin
  72   (const Standard_Integer TViewIndex) const
  73 {
  74   return (gp_Pnt2d (theViewOrigins->Value(TViewIndex)) );
  75 }
  76
  77     Standard_Integer IGESDraw_Drawing::NbAnnotations () const
  78 {
  79   return (theAnnotations.IsNull() ? 0 : theAnnotations->Length() );
  80 }
  81
  82     Handle(IGESData_IGESEntity) IGESDraw_Drawing::Annotation
  83   (const Standard_Integer AnnotationIndex) const
  84 {
  85   return ( theAnnotations->Value(AnnotationIndex) );
  86 }
  87
  88     gp_XY IGESDraw_Drawing::ViewToDrawing
  89   (const Standard_Integer NumView, const gp_XYZ& ViewCoords) const
  90 {
  91   gp_XY         thisOrigin       = theViewOrigins->Value(NumView);
  92   Standard_Real XOrigin          = thisOrigin.X();
  93   Standard_Real YOrigin          = thisOrigin.Y();
  94   Standard_Real theScaleFactor=0.;
  95
  96   Handle(IGESData_ViewKindEntity) tempView = theViews->Value(NumView);
  97   if (tempView->IsKind(STANDARD_TYPE(IGESDraw_View)))
  98     {
  99       DeclareAndCast(IGESDraw_View, thisView, tempView);
 100       theScaleFactor   = thisView->ScaleFactor();
 101     }
 102   else if (tempView->IsKind(STANDARD_TYPE(IGESDraw_PerspectiveView)))
 103     {
 104       DeclareAndCast(IGESDraw_PerspectiveView, thisView, tempView);
 105       theScaleFactor   = thisView->ScaleFactor();
 106     }
 107
 108   Standard_Real XV               = ViewCoords.X();
 109   Standard_Real YV               = ViewCoords.Y();
 110
 111   Standard_Real XD = XOrigin + (theScaleFactor * XV);
 112   Standard_Real YD = YOrigin + (theScaleFactor * YV);
 113
 114   return ( gp_XY(XD, YD) );
 115 }
 116
 117
 118     Standard_Boolean  IGESDraw_Drawing::DrawingUnit (Standard_Real& val) const
 119 {
 120   val = 0.;
 121   Handle(Standard_Type) typunit = STANDARD_TYPE(IGESGraph_DrawingUnits);
 122   if (NbTypedProperties(typunit) != 1) return Standard_False;
 123   DeclareAndCast(IGESGraph_DrawingUnits,units,TypedProperty(typunit));
 124   if (units.IsNull()) return Standard_False;
 125   val = units->UnitValue();
 126   return Standard_True;
 127 }
 128
 129     Standard_Boolean  IGESDraw_Drawing::DrawingSize
 130   (Standard_Real& X, Standard_Real& Y) const
 131 {
 132   X = Y = 0.;
 133   Handle(Standard_Type) typsize = STANDARD_TYPE(IGESGraph_DrawingSize);
 134   if (NbTypedProperties(typsize) != 1) return Standard_False;
 135   DeclareAndCast(IGESGraph_DrawingSize,size,TypedProperty(typsize));
 136   if (size.IsNull()) return Standard_False;
 137   X = size->XSize();  Y = size->YSize();
 138   return Standard_True;
 139 }