llsphere.h
上传用户:king477883
上传日期:2021-03-01
资源大小:9553k
文件大小:3k
- // llsphere.h
- /**
- * @file llsphere.cpp
- * @author Andrew Meadows
- * @brief Simple sphere implementation for basic geometric operations
- *
- * $LicenseInfo:firstyear=2007&license=viewergpl$
- *
- * Copyright (c) 2007-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_SPHERE_H
- #define LL_SPHERE_H
- #include "stdtypes.h"
- #include "v3math.h"
- #include <iostream>
- #include <vector>
- class LLSphere
- {
- public:
- LLSphere();
- LLSphere( const LLVector3& center, F32 radius );
- void set( const LLVector3& center, F32 radius );
- void setCenter( const LLVector3& center );
- void setRadius( F32 radius );
- const LLVector3& getCenter() const;
- F32 getRadius() const;
- // returns TRUE if this sphere completely contains other_sphere
- BOOL contains(const LLSphere& other_sphere) const;
- // returns TRUE if this sphere overlaps other_sphere
- BOOL overlaps(const LLSphere& other_sphere) const;
- // returns overlap distance
- // negative overlap is closest approach
- F32 getOverlap(const LLSphere& other_sphere) const;
- // removes any spheres that are contained in others
- static void collapse(std::vector<LLSphere>& sphere_list);
- // returns minimum sphere bounding sphere for a set of spheres
- static LLSphere getBoundingSphere(const LLSphere& first_sphere, const LLSphere& second_sphere);
- static LLSphere getBoundingSphere(const std::vector<LLSphere>& sphere_list);
- bool operator==(const LLSphere& rhs) const;
- friend std::ostream& operator<<( std::ostream& output_stream, const LLSphere& line );
- protected:
- LLVector3 mCenter;
- F32 mRadius;
- };
- #endif