diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /graphics/epix/clipping.h |
Initial commit
Diffstat (limited to 'graphics/epix/clipping.h')
-rw-r--r-- | graphics/epix/clipping.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/graphics/epix/clipping.h b/graphics/epix/clipping.h new file mode 100644 index 0000000000..bec60a3801 --- /dev/null +++ b/graphics/epix/clipping.h @@ -0,0 +1,77 @@ +/* + * clipping.h -- ePiX's clip box + * + * This file is part of ePiX, a C++ library for creating high-quality + * figures in LaTeX + * + * Version 1.1.13 + * Last Change: August 23, 2007 + */ + +/* + * Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007 + * Andrew D. Hwang <rot 13 nujnat at zngupf dot ubylpebff dot rqh> + * Department of Mathematics and Computer Science + * College of the Holy Cross + * Worcester, MA, 01610-2395, USA + */ + +/* + * ePiX is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * ePiX is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public + * License for more details. + * + * You should have received a copy of the GNU General Public License + * along with ePiX; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* + * The class in this file implements backend for user-level global + * functions defined in state.h. This header is not part of epix.h. + */ +#ifndef EPIX_CLIPPING +#define EPIX_CLIPPING + +#include <string> + +#include "edge_data.h" +#include "halfspace.h" + +namespace ePiX { + + class P; + + class clip_state { + public: + // create inward-pointing faces of clip_box + clip_state(const P& arg1, const P& arg2); + clip_state(); // very large box by default + + // add and remove faces + clip_state& add_face(const P& loc, const P& perp); + clip_state& clear_extras(); + + bool clips(const P&) const; + + // return reference to clipped argument + std::list<edge3d>& clip_path(std::list<edge3d>&) const; + std::list<edge3d>& clip_loop(std::list<edge3d>&) const; + + private: + std::list<halfspace> m_walls; // always present + + std::list<halfspace> m_extras; // user-added + }; // end of class clip_state + + clip_state& the_clip_box(); + +} // end of namespace + +#endif /* EPIX_CLIPPING */ |