line_math.h

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00001 /*
00002 **  ClanLib SDK
00003 **  Copyright (c) 1997-2011 The ClanLib Team
00004 **
00005 **  This software is provided 'as-is', without any express or implied
00006 **  warranty.  In no event will the authors be held liable for any damages
00007 **  arising from the use of this software.
00008 **
00009 **  Permission is granted to anyone to use this software for any purpose,
00010 **  including commercial applications, and to alter it and redistribute it
00011 **  freely, subject to the following restrictions:
00012 **
00013 **  1. The origin of this software must not be misrepresented; you must not
00014 **     claim that you wrote the original software. If you use this software
00015 **     in a product, an acknowledgment in the product documentation would be
00016 **     appreciated but is not required.
00017 **  2. Altered source versions must be plainly marked as such, and must not be
00018 **     misrepresented as being the original software.
00019 **  3. This notice may not be removed or altered from any source distribution.
00020 **
00021 **  Note: Some of the libraries ClanLib may link to may have additional
00022 **  requirements or restrictions.
00023 **
00024 **  File Author(s):
00025 **
00026 **    Harry Storbacka
00027 **    Magnus Norddahl
00028 **    (if your name is missing here, please add it)
00029 */
00030 
00033 
00034 #pragma once
00035 
00036 #include "../api_core.h"
00037 #include "point.h"
00038 
00044 class CL_API_CORE CL_LineMath
00045 {
00046 public:
00047 // Operations:
00048 
00056         static float point_right_of_line( float x, float y, float *line );
00057 
00068         static float point_right_of_line( float x, float y, float line_x1, float line_y1, float line_x2, float line_y2 );
00069 
00077         static float point_right_of_line( const CL_Pointf &A, const CL_Pointf &B, const CL_Pointf &P );
00078 
00086         static CL_Pointf midpoint( const CL_Pointf &A, const CL_Pointf &B );
00087 
00093         static CL_Pointf closest_point( const CL_Pointf &P, const CL_Pointf &A, const CL_Pointf &B );
00094 
00100         static float closest_point_relative( const CL_Pointf &P, const CL_Pointf &A, const CL_Pointf &B );
00101 };
00102