Applied patch [ 1355355 ] Replace GPLed code in penguin sample and add features

(with Unicode and scope mods)
By Sandro Sigala


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36174 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/opengl/penguin/dxfrenderer.h

@@ -0,0 +1,79 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        dxfrenderer.h
+// Purpose:     DXF reader and renderer
+// Author:      Sandro Sigala
+// Modified by:
+// Created:     2005-11-10
+// RCS-ID:      $Id$
+// Copyright:   (c) Sandro Sigala
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _DXFRENDERER_H_
+#define _DXFRENDERER_H_
+
+struct DXFVector
+{
+    DXFVector() { x = y = z = 0.0f; }
+    DXFVector(float _x, float _y, float _z) { x = _x; y = _y; z = _z; }
+    float x, y, z;
+};
+
+struct DXFEntity
+{
+    enum Type { Line, Face } type;
+    int colour;
+};
+
+struct DXFLine: public DXFEntity
+{
+    DXFLine() { type = Line; }
+    DXFVector v0;
+    DXFVector v1;
+};
+
+struct DXFFace: public DXFEntity
+{
+    DXFFace() { type = Face; }
+    void CalculateNormal();
+    DXFVector v0;
+    DXFVector v1;
+    DXFVector v2;
+    DXFVector v3;
+    DXFVector n;       // normal
+};
+
+struct DXFLayer
+{
+    DXFLayer() { colour = -1; }
+    wxString name;
+    int colour;
+};
+
+WX_DECLARE_LIST(DXFEntity, DXFEntityList);
+WX_DECLARE_LIST(DXFLayer, DXFLayerList);
+
+class DXFRenderer
+{
+public:
+    DXFRenderer();
+    ~DXFRenderer();
+
+    void Clear();
+    bool Load(wxInputStream& stream);
+    bool IsOk() const { return m_loaded; }
+    void Render() const;
+
+private:
+    bool ParseHeader(wxInputStream& stream);
+    bool ParseTables(wxInputStream& stream);
+    bool ParseEntities(wxInputStream& stream);
+    int GetLayerColour(const wxString& layer) const;
+    void NormalizeEntities();
+
+    bool m_loaded;
+    DXFLayerList m_layers;
+    DXFEntityList m_entities;
+};
+
+#endif // !_DXFRENDERER_H_