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       throw Standard_DimensionMismatch("IGESDraw_Drawing : Init");
  49   }
  50   if (!allAnnotations.IsNull())
  51     if (allAnnotations->Lower() != 1) throw Standard_DimensionMismatch("IGESDraw_Drawing : Init");
  52
  53   theViews         = allViews;
  54   theViewOrigins   = allViewOrigins;
  55   theAnnotations   = allAnnotations;
  56   InitTypeAndForm(404,0);
  57 }
  58
  59     Standard_Integer IGESDraw_Drawing::NbViews () const
  60 {
  61   return (theViews.IsNull() ? 0 : theViews->Length());
  62 }
  63
  64     Handle(IGESData_ViewKindEntity) IGESDraw_Drawing::ViewItem
  65   (const Standard_Integer ViewIndex) const
  66 {
  67   return theViews->Value(ViewIndex);
  68 }
  69
  70     gp_Pnt2d IGESDraw_Drawing::ViewOrigin
  71   (const Standard_Integer TViewIndex) const
  72 {
  73   return (gp_Pnt2d (theViewOrigins->Value(TViewIndex)) );
  74 }
  75
  76     Standard_Integer IGESDraw_Drawing::NbAnnotations () const
  77 {
  78   return (theAnnotations.IsNull() ? 0 : theAnnotations->Length() );
  79 }
  80
  81     Handle(IGESData_IGESEntity) IGESDraw_Drawing::Annotation
  82   (const Standard_Integer AnnotationIndex) const
  83 {
  84   return ( theAnnotations->Value(AnnotationIndex) );
  85 }
  86
  87     gp_XY IGESDraw_Drawing::ViewToDrawing
  88   (const Standard_Integer NumView, const gp_XYZ& ViewCoords) const
  89 {
  90   gp_XY         thisOrigin       = theViewOrigins->Value(NumView);
  91   Standard_Real XOrigin          = thisOrigin.X();
  92   Standard_Real YOrigin          = thisOrigin.Y();
  93   Standard_Real theScaleFactor=0.;
  94
  95   Handle(IGESData_ViewKindEntity) tempView = theViews->Value(NumView);
  96   if (tempView->IsKind(STANDARD_TYPE(IGESDraw_View)))
  97     {
  98       DeclareAndCast(IGESDraw_View, thisView, tempView);
  99       theScaleFactor   = thisView->ScaleFactor();
 100     }
 101   else if (tempView->IsKind(STANDARD_TYPE(IGESDraw_PerspectiveView)))
 102     {
 103       DeclareAndCast(IGESDraw_PerspectiveView, thisView, tempView);
 104       theScaleFactor   = thisView->ScaleFactor();
 105     }
 106
 107   Standard_Real XV               = ViewCoords.X();
 108   Standard_Real YV               = ViewCoords.Y();
 109
 110   Standard_Real XD = XOrigin + (theScaleFactor * XV);
 111   Standard_Real YD = YOrigin + (theScaleFactor * YV);
 112
 113   return ( gp_XY(XD, YD) );
 114 }
 115
 116
 117     Standard_Boolean  IGESDraw_Drawing::DrawingUnit (Standard_Real& val) const
 118 {
 119   val = 0.;
 120   Handle(Standard_Type) typunit = STANDARD_TYPE(IGESGraph_DrawingUnits);
 121   if (NbTypedProperties(typunit) != 1) return Standard_False;
 122   DeclareAndCast(IGESGraph_DrawingUnits,units,TypedProperty(typunit));
 123   if (units.IsNull()) return Standard_False;
 124   val = units->UnitValue();
 125   return Standard_True;
 126 }
 127
 128     Standard_Boolean  IGESDraw_Drawing::DrawingSize
 129   (Standard_Real& X, Standard_Real& Y) const
 130 {
 131   X = Y = 0.;
 132   Handle(Standard_Type) typsize = STANDARD_TYPE(IGESGraph_DrawingSize);
 133   if (NbTypedProperties(typsize) != 1) return Standard_False;
 134   DeclareAndCast(IGESGraph_DrawingSize,size,TypedProperty(typsize));
 135   if (size.IsNull()) return Standard_False;
 136   X = size->XSize();  Y = size->YSize();
 137   return Standard_True;
 138 }