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OgreSphere.h - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\ogre\include\OgreSphere.h
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/* ----------------------------------------------------------------------------- This source file is part of OGRE (Object-oriented Graphics Rendering Engine) For the latest info, see http://www.ogre3d.org/ Copyright (c) 2000-2006 Torus Knot Software Ltd Also see acknowledgements in Readme.html This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA, or go to http://www.gnu.org/copyleft/lesser.txt. You may alternatively use this source under the terms of a specific version of the OGRE Unrestricted License provided you have obtained such a license from Torus Knot Software Ltd. ----------------------------------------------------------------------------- */ #ifndef __Sphere_H_ #define __Sphere_H_ // Precompiler options #include "OgrePrerequisites.h" #include "OgreVector3.h" namespace Ogre { /** A sphere primitive, mostly used for bounds checking. @remarks A sphere in math texts is normally represented by the function x^2 + y^2 + z^2 = r^2 (for sphere's centered on the origin). Ogre stores spheres simply as a center point and a radius. */ class _OgreExport Sphere { protected: Real mRadius; Vector3 mCenter; public: /** Standard constructor - creates a unit sphere around the origin.*/ Sphere() : mRadius(1.0), mCenter(Vector3::ZERO) {} /** Constructor allowing arbitrary spheres. @param center The center point of the sphere. @param radius The radius of the sphere. */ Sphere(const Vector3& center, Real radius) : mRadius(radius), mCenter(center) {} /** Returns the radius of the sphere. */ Real getRadius(void) const { return mRadius; } /** Sets the radius of the sphere. */ void setRadius(Real radius) { mRadius = radius; } /** Returns the center point of the sphere. */ const Vector3& getCenter(void) const { return mCenter; } /** Sets the center point of the sphere. */ void setCenter(const Vector3& center) { mCenter = center; } /** Returns whether or not this sphere interects another sphere. */ bool intersects(const Sphere& s) const { return (s.mCenter - mCenter).squaredLength() <= Math::Sqr(s.mRadius + mRadius); } /** Returns whether or not this sphere interects a box. */ bool intersects(const AxisAlignedBox& box) const { return Math::intersects(*this, box); } /** Returns whether or not this sphere interects a plane. */ bool intersects(const Plane& plane) const { return Math::intersects(*this, plane); } /** Returns whether or not this sphere interects a point. */ bool intersects(const Vector3& v) const { return ((v - mCenter).squaredLength() <= Math::Sqr(mRadius)); } }; } #endif
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