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- // SuperTux
- // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
- //
- // This program 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 3 of the License, or
- // (at your option) any later version.
- //
- // This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
- #ifndef HEADER_SUPERTUX_MATH_AATRIANGLE_HPP
- #define HEADER_SUPERTUX_MATH_AATRIANGLE_HPP
- #include "math/rectf.hpp"
- /**
- * An axis-aligned triangle (ie. a triangle where 2 sides are parallel to the x-
- * and y-axis.
- */
- class AATriangle final
- {
- public:
- /** Directions:
- *
- * SOUTHEWEST NORTHEAST SOUTHEAST NORTHWEST
- * * or *---* or * or *---*
- * | \ \ | / | | /
- * | \ \ | / | | /
- * *---* * *---* *
- *
- * Deform flags: (see docs/aatriangletypes.png for details)
- */
- enum Direction {
- SOUTHWEST = 0,
- NORTHEAST,
- SOUTHEAST,
- NORTHWEST,
- DIRECTION_MASK = 0x0003,
- DEFORM_BOTTOM = 0x0010,
- DEFORM_TOP = 0x0020,
- DEFORM_LEFT = 0x0030,
- DEFORM_RIGHT = 0x0040,
- DEFORM_MASK = 0x0070
- };
- static int vertical_flip(int dir);
- public:
- AATriangle() :
- bbox(),
- dir(SOUTHWEST)
- {
- }
- AATriangle(const Rectf& newbbox, int newdir) :
- bbox(newbbox),
- dir(newdir)
- {
- }
- public:
- Rectf bbox;
- int dir;
- };
- #endif
- /* EOF */
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