00001 /* 00002 Copyright (c) 2010, The Cinder Project: http://libcinder.org 00003 All rights reserved. 00004 00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that 00006 the following conditions are met: 00007 00008 * Redistributions of source code must retain the above copyright notice, this list of conditions and 00009 the following disclaimer. 00010 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 00011 the following disclaimer in the documentation and/or other materials provided with the distribution. 00012 00013 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED 00014 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00015 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00016 ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00017 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00018 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00019 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00020 POSSIBILITY OF SUCH DAMAGE. 00021 */ 00022 00023 #pragma once 00024 00025 #include "cinder/Matrix.h" 00026 #include "cinder/Ray.h" 00027 #include "cinder/Vector.h" 00028 00029 namespace cinder { 00030 00031 class AxisAlignedBox3f { 00032 public: 00033 AxisAlignedBox3f() {} 00034 AxisAlignedBox3f( const Vec3f &aMin, const Vec3f &aMax ); 00035 00036 bool intersects( const Ray &ray ); 00037 int intersect( const Ray &ray, float intersections[2] ); 00038 00039 Vec3f getCenter() const { return ( mExtents[1] + mExtents[0] ) * 0.5f; } 00040 Vec3f getSize() const { return mExtents[1] - mExtents[0]; } 00041 00043 void include( const AxisAlignedBox3f &box ); 00044 00045 const Vec3f& getMin() const { return mExtents[0]; } 00046 const Vec3f& getMax() const { return mExtents[1]; } 00047 00049 Vec3f getNegative( const Vec3f &normal ) const; 00050 Vec3f getPositive( const Vec3f &normal ) const; 00051 00053 AxisAlignedBox3f transformed( const Matrix44f &transform ) const; 00054 00055 static bool calcTriangleIntersection( const Ray &ray, const Vec3f &vert0, const Vec3f &vert1, const Vec3f &vert2, float *result ); 00056 00057 protected: 00058 Vec3f mExtents[2]; 00059 Vec3f mVerts[8]; 00060 }; 00061 00062 } // namespace cinder