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diff --git a/src/ftgl/FTGL/FTGlyph.h b/src/ftgl/FTGL/FTGlyph.h
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+++ b/src/ftgl/FTGL/FTGlyph.h
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+/*
+ * FTGL - OpenGL font library
+ *
+ * Copyright (c) 2001-2004 Henry Maddocks <ftgl@opengl.geek.nz>
+ * Copyright (c) 2008 Sam Hocevar <sam@zoy.org>
+ * Copyright (c) 2008 Sean Morrison <learner@brlcad.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __ftgl__
+#   warning This header is deprecated. Please use <FTGL/ftgl.h> from now.
+#   include <FTGL/ftgl.h>
+#endif
+
+#ifndef __FTGlyph__
+#define __FTGlyph__
+
+#ifdef __cplusplus
+
+class FTGlyphImpl;
+
+/**
+ * FTGlyph is the base class for FTGL glyphs.
+ *
+ * It provides the interface between Freetype glyphs and their openGL
+ * renderable counterparts. This is an abstract class and derived classes
+ * must implement the <code>Render</code> function.
+ *
+ * @see FTBBox
+ * @see FTPoint
+ */
+class FTGL_EXPORT FTGlyph
+{
+    protected:
+        /**
+         * Create a glyph.
+         *
+         * @param glyph  The Freetype glyph to be processed
+         */
+        FTGlyph(FT_GlyphSlot glyph);
+
+    private:
+        /**
+         * Internal FTGL FTGlyph constructor. For private use only.
+         *
+         * @param pImpl  Internal implementation object. Will be destroyed
+         *               upon FTGlyph deletion.
+         */
+        FTGlyph(FTGlyphImpl *pImpl);
+
+        /* Allow our internal subclasses to access the private constructor */
+        friend class FTBitmapGlyph;
+        friend class FTBufferGlyph;
+        friend class FTExtrudeGlyph;
+        friend class FTOutlineGlyph;
+        friend class FTPixmapGlyph;
+        friend class FTPolygonGlyph;
+        friend class FTTextureGlyph;
+
+    public:
+        /**
+          * Destructor
+          */
+        virtual ~FTGlyph();
+
+        /**
+         * Renders this glyph at the current pen position.
+         *
+         * @param pen  The current pen position.
+         * @param renderMode  Render mode to display
+         * @return  The advance distance for this glyph.
+         */
+        virtual const FTPoint& Render(const FTPoint& pen, int renderMode) = 0;
+
+        /**
+         * Return the advance width for this glyph.
+         *
+         * @return  advance width.
+         */
+        virtual float Advance() const;
+
+        /**
+         * Return the bounding box for this glyph.
+         *
+         * @return  bounding box.
+         */
+        virtual const FTBBox& BBox() const;
+
+        /**
+         * Queries for errors.
+         *
+         * @return  The current error code.
+         */
+        virtual FT_Error Error() const;
+
+    private:
+        /**
+         * Internal FTGL FTGlyph implementation object. For private use only.
+         */
+        FTGlyphImpl *impl;
+};
+
+#endif //__cplusplus
+
+FTGL_BEGIN_C_DECLS
+
+/**
+ * FTGLglyph is the base class for FTGL glyphs.
+ *
+ * It provides the interface between Freetype glyphs and their openGL
+ * renderable counterparts. This is an abstract class and derived classes
+ * must implement the ftglRenderGlyph() function.
+ */
+struct _FTGLGlyph;
+typedef struct _FTGLglyph FTGLglyph;
+
+/**
+ * Create a custom FTGL glyph object.
+ * FIXME: maybe get rid of "base" and have advanceCallback etc. functions
+ *
+ * @param base  The base FTGLglyph* to subclass.
+ * @param data  A pointer to private data that will be passed to callbacks.
+ * @param renderCallback  A rendering callback function.
+ * @param destroyCallback  A callback function to be called upon destruction.
+ * @return  An FTGLglyph* object.
+ */
+FTGL_EXPORT FTGLglyph *ftglCreateCustomGlyph(FTGLglyph *base, void *data,
+    void (*renderCallback) (FTGLglyph *, void *, FTGL_DOUBLE, FTGL_DOUBLE,
+                             int, FTGL_DOUBLE *, FTGL_DOUBLE *),
+    void (*destroyCallback) (FTGLglyph *, void *));
+
+/**
+ * Destroy an FTGL glyph object.
+ *
+ * @param glyph  An FTGLglyph* object.
+ */
+FTGL_EXPORT void ftglDestroyGlyph(FTGLglyph *glyph);
+
+/**
+ * Render a glyph at the current pen position and compute the corresponding
+ * advance.
+ *
+ * @param glyph  An FTGLglyph* object.
+ * @param penx  The current pen's X position.
+ * @param peny  The current pen's Y position.
+ * @param renderMode  Render mode to display
+ * @param advancex  A pointer to an FTGL_DOUBLE where to write the advance's X
+ *                  component.
+ * @param advancey  A pointer to an FTGL_DOUBLE where to write the advance's Y
+ *                  component.
+ */
+FTGL_EXPORT void ftglRenderGlyph(FTGLglyph *glyph, FTGL_DOUBLE penx,
+                                 FTGL_DOUBLE peny, int renderMode,
+                                 FTGL_DOUBLE *advancex, FTGL_DOUBLE *advancey);
+/**
+ * Return the advance for a glyph.
+ *
+ * @param glyph  An FTGLglyph* object.
+ * @return  The advance's X component.
+ */
+FTGL_EXPORT float ftglGetGlyphAdvance(FTGLglyph *glyph);
+
+/**
+ * Return the bounding box for a glyph.
+ *
+ * @param glyph  An FTGLglyph* object.
+ * @param bounds  An array of 6 float values where the bounding box's lower
+ *                left near and upper right far 3D coordinates will be stored.
+ */
+FTGL_EXPORT void ftglGetGlyphBBox(FTGLglyph *glyph, float bounds[6]);
+
+/**
+ * Query a glyph for errors.
+ *
+ * @param glyph  An FTGLglyph* object.
+ * @return  The current error code.
+ */
+FTGL_EXPORT FT_Error ftglGetGlyphError(FTGLglyph* glyph);
+
+FTGL_END_C_DECLS
+
+#endif  //  __FTGlyph__
+