62 lines
2.9 KiB
C++
62 lines
2.9 KiB
C++
/*
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* ICE / OPCODE - Optimized Collision Detection
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* http://www.codercorner.com/Opcode.htm
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*
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* Copyright (c) 2001-2008 Pierre Terdiman, pierre@codercorner.com
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Contains code for planes.
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* \file IcePlane.cpp
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* \author Pierre Terdiman
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* \date April, 4, 2000
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Plane class.
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* \class Plane
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* \author Pierre Terdiman
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* \version 1.0
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Precompiled Header
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#include "Stdafx.h"
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using namespace Opcode;
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Computes the plane equation from 3 points.
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* \param p0 [in] first point
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* \param p1 [in] second point
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* \param p2 [in] third point
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* \return Self-reference
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*/
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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Plane& Plane::Set(const Point& p0, const Point& p1, const Point& p2)
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{
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Point Edge0 = p1 - p0;
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Point Edge1 = p2 - p0;
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n = Edge0 ^ Edge1;
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n.Normalize();
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d = -(p0 | n);
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return *this;
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}
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