samples/opengl/penguin/dxfrenderer.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dxfrenderer.h
   3 // Purpose:     DXF reader and renderer
   4 // Author:      Sandro Sigala
   5 // Modified by:
   6 // Created:     2005-11-10
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Sandro Sigala
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _DXFRENDERER_H_
  13 #define _DXFRENDERER_H_
  14
  15 struct DXFVector
  16 {
  17     DXFVector() { x = y = z = 0.0f; }
  18     DXFVector(float _x, float _y, float _z) { x = _x; y = _y; z = _z; }
  19     float x, y, z;
  20 };
  21
  22 struct DXFEntity
  23 {
  24     enum Type { Line, Face } type;
  25     int colour;
  26 };
  27
  28 struct DXFLine: public DXFEntity
  29 {
  30     DXFLine() { type = Line; }
  31     DXFVector v0;
  32     DXFVector v1;
  33 };
  34
  35 struct DXFFace: public DXFEntity
  36 {
  37     DXFFace() { type = Face; }
  38     void CalculateNormal();
  39     DXFVector v0;
  40     DXFVector v1;
  41     DXFVector v2;
  42     DXFVector v3;
  43     DXFVector n;       // normal
  44 };
  45
  46 struct DXFLayer
  47 {
  48     DXFLayer() { colour = -1; }
  49     wxString name;
  50     int colour;
  51 };
  52
  53 WX_DECLARE_LIST(DXFEntity, DXFEntityList);
  54 WX_DECLARE_LIST(DXFLayer, DXFLayerList);
  55
  56 class DXFRenderer
  57 {
  58 public:
  59     DXFRenderer();
  60     ~DXFRenderer();
  61
  62     void Clear();
  63     bool Load(wxInputStream& stream);
  64     bool IsOk() const { return m_loaded; }
  65     void Render() const;
  66
  67 private:
  68     bool ParseHeader(wxInputStream& stream);
  69     bool ParseTables(wxInputStream& stream);
  70     bool ParseEntities(wxInputStream& stream);
  71     int GetLayerColour(const wxString& layer) const;
  72     void NormalizeEntities();
  73
  74     bool m_loaded;
  75     DXFLayerList m_layers;
  76     DXFEntityList m_entities;
  77 };
  78
  79 #endif // !_DXFRENDERER_H_