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