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Diffstat (limited to 'src/ftgl/FTGL/FTBBox.h')
| -rw-r--r-- | src/ftgl/FTGL/FTBBox.h | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/src/ftgl/FTGL/FTBBox.h b/src/ftgl/FTGL/FTBBox.h new file mode 100644 index 0000000..858ff7a --- /dev/null +++ b/src/ftgl/FTGL/FTBBox.h @@ -0,0 +1,180 @@ +/* + * 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 __FTBBox__ +#define __FTBBox__ + +#ifdef __cplusplus + + +/** + * FTBBox is a convenience class for handling bounding boxes. + */ +class FTGL_EXPORT FTBBox +{ + public: + /** + * Default constructor. Bounding box is set to zero. + */ + FTBBox() + : lower(0.0f, 0.0f, 0.0f), + upper(0.0f, 0.0f, 0.0f) + {} + + /** + * Constructor. + */ + FTBBox(float lx, float ly, float lz, float ux, float uy, float uz) + : lower(lx, ly, lz), + upper(ux, uy, uz) + {} + + /** + * Constructor. + */ + FTBBox(FTPoint l, FTPoint u) + : lower(l), + upper(u) + {} + + /** + * Constructor. Extracts a bounding box from a freetype glyph. Uses + * the control box for the glyph. <code>FT_Glyph_Get_CBox()</code> + * + * @param glyph A freetype glyph + */ + FTBBox(FT_GlyphSlot glyph) + : lower(0.0f, 0.0f, 0.0f), + upper(0.0f, 0.0f, 0.0f) + { + FT_BBox bbox; + FT_Outline_Get_CBox(&(glyph->outline), &bbox); + + lower.X(static_cast<float>(bbox.xMin) / 64.0f); + lower.Y(static_cast<float>(bbox.yMin) / 64.0f); + lower.Z(0.0f); + upper.X(static_cast<float>(bbox.xMax) / 64.0f); + upper.Y(static_cast<float>(bbox.yMax) / 64.0f); + upper.Z(0.0f); + } + + /** + * Destructor + */ + ~FTBBox() + {} + + /** + * Mark the bounds invalid by setting all lower dimensions greater + * than the upper dimensions. + */ + void Invalidate() + { + lower = FTPoint(1.0f, 1.0f, 1.0f); + upper = FTPoint(-1.0f, -1.0f, -1.0f); + } + + /** + * Determines if this bounding box is valid. + * + * @return True if all lower values are <= the corresponding + * upper values. + */ + bool IsValid() + { + return lower.X() <= upper.X() + && lower.Y() <= upper.Y() + && lower.Z() <= upper.Z(); + } + + /** + * Move the Bounding Box by a vector. + * + * @param vector The vector to move the bbox in 3D space. + */ + FTBBox& operator += (const FTPoint vector) + { + lower += vector; + upper += vector; + + return *this; + } + + /** + * Combine two bounding boxes. The result is the smallest bounding + * box containing the two original boxes. + * + * @param bbox The bounding box to merge with the second one. + */ + FTBBox& operator |= (const FTBBox& bbox) + { + if(bbox.lower.X() < lower.X()) lower.X(bbox.lower.X()); + if(bbox.lower.Y() < lower.Y()) lower.Y(bbox.lower.Y()); + if(bbox.lower.Z() < lower.Z()) lower.Z(bbox.lower.Z()); + if(bbox.upper.X() > upper.X()) upper.X(bbox.upper.X()); + if(bbox.upper.Y() > upper.Y()) upper.Y(bbox.upper.Y()); + if(bbox.upper.Z() > upper.Z()) upper.Z(bbox.upper.Z()); + + return *this; + } + + void SetDepth(float depth) + { + if(depth > 0) + upper.Z(lower.Z() + depth); + else + lower.Z(upper.Z() + depth); + } + + + inline FTPoint const Upper() const + { + return upper; + } + + + inline FTPoint const Lower() const + { + return lower; + } + + private: + /** + * The bounds of the box + */ + FTPoint lower, upper; +}; + +#endif //__cplusplus + +#endif // __FTBBox__ + |