| 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org |
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| 6 | |
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| 7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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| 8 | Also see acknowledgements in Readme.html |
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| 9 | |
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| 10 | This program is free software; you can redistribute it and/or modify it under |
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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| 12 | Foundation; either version 2 of the License, or (at your option) any later |
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| 13 | version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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| 18 | |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with |
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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| 22 | http://www.gnu.org/copyleft/lesser.txt. |
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| 23 | |
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| 24 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | #ifndef _Rectangle_H__ |
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| 30 | #define _Rectangle_H__ |
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| 31 | |
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| 32 | #include "OgrePrerequisites.h" |
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| 33 | |
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| 34 | namespace Ogre { |
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| 35 | |
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| 36 | struct _OgreExport Rectangle |
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| 37 | { |
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| 38 | Real left; |
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| 39 | Real top; |
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| 40 | Real right; |
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| 41 | Real bottom; |
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| 42 | |
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| 43 | inline bool inside(Real x, Real y) const { return x >= left && x <= right && y >= top && y <= bottom; } |
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| 44 | }; |
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| 45 | |
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| 46 | /** Geometric intersection of two rectanglar regions. |
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| 47 | * |
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| 48 | * @remarks Calculates the geometric intersection of two rectangular |
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| 49 | * regions. Rectangle coordinates must be ([0-N], [0-N]), such that |
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| 50 | * (0,0) is in the upper left hand corner. |
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| 51 | * |
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| 52 | * If the two input rectangles do not intersect, then the result will be |
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| 53 | * a degenerate rectangle, i.e. left >= right or top >= bottom, or both. |
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| 54 | */ |
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| 55 | inline Rectangle intersect(const Rectangle& lhs, const Rectangle& rhs) |
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| 56 | { |
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| 57 | Rectangle r; |
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| 58 | |
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| 59 | r.left = lhs.left > rhs.left ? lhs.left : rhs.left; |
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| 60 | r.top = lhs.top > rhs.top ? lhs.top : rhs.top; |
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| 61 | r.right = lhs.right < rhs.right ? lhs.right : rhs.right; |
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| 62 | r.bottom = lhs.bottom < rhs.bottom ? lhs.bottom : rhs.bottom; |
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| 63 | |
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| 64 | return r; |
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| 65 | } |
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| 66 | |
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| 67 | } |
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| 68 | |
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| 69 | #endif // _Rectangle_H__ |
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