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include/cinder/Sphere.h

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00001 /*
00002  Copyright (c) 2010, The Barbarian Group
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 "Vector.h"
00026 #include "Ray.h"
00027 
00028 #include <vector>
00029 
00030 namespace cinder {
00031 
00032 class Sphere {
00033  public:
00034     Sphere() {}
00035     Sphere( const Vec3f &aCenter, float aRadius ) : mCenter( aCenter ), mRadius( aRadius ) {}
00036 
00037     float   getRadius() const { return mRadius; }
00038     void    setRadius( float radius ) { mRadius = radius; }
00039     
00040     const Vec3f&    getCenter() const { return mCenter; }
00041     const void      setCenter( const Vec3f &center ) { mCenter = center; }
00042 
00043     bool intersects( const Ray &ray );
00044     int intersect( const Ray &ray, float *intersection );
00045 
00046     static Sphere   calculateBoundingSphere( const std::vector<Vec3f> &points );
00047 
00048  protected:
00049     Vec3f   mCenter;
00050     float   mRadius;
00051 };
00052 
00053 } // namespace cinder