mirror of https://github.com/axmolengine/axmol.git
94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
/****************************************************************************
|
|
Copyright (c) 2015 Chukong Technologies Inc.
|
|
|
|
http://www.cocos2d-x.org
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
of this software and associated documentation files (the "Software"), to deal
|
|
in the Software without restriction, including without limitation the rights
|
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
copies of the Software, and to permit persons to whom the Software is
|
|
furnished to do so, subject to the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
THE SOFTWARE.
|
|
****************************************************************************/
|
|
|
|
#ifndef __CC_PU_PARTICLE_3D_SPHERE_H__
|
|
#define __CC_PU_PARTICLE_3D_SPHERE_H__
|
|
|
|
#include "base/CCRef.h"
|
|
#include "math/CCMath.h"
|
|
#include "3d/CCAABB.h"
|
|
#include <vector>
|
|
|
|
NS_CC_BEGIN
|
|
/** 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 PUSphere
|
|
{
|
|
protected:
|
|
float _radius;
|
|
Vec3 _center;
|
|
public:
|
|
/** Standard constructor - creates a unit sphere around the origin.*/
|
|
PUSphere();
|
|
/** Constructor allowing arbitrary spheres.
|
|
@param center The center point of the sphere.
|
|
@param radius The radius of the sphere.
|
|
*/
|
|
PUSphere(const Vec3& center, float radius);
|
|
|
|
/** Returns the radius of the sphere. */
|
|
float getRadius(void) const { return _radius; }
|
|
|
|
/** Sets the radius of the sphere. */
|
|
void setRadius(float radius) { _radius = radius; }
|
|
|
|
/** Returns the center point of the sphere. */
|
|
const Vec3& getCenter(void) const { return _center; }
|
|
|
|
/** Sets the center point of the sphere. */
|
|
void setCenter(const Vec3& center) { _center = center; }
|
|
|
|
/** Returns whether or not this sphere intersects another sphere. */
|
|
bool intersects(const PUSphere& s) const
|
|
{
|
|
return (s._center - _center).lengthSquared() <= (s._radius + _radius) * (s._radius + _radius);
|
|
}
|
|
///** Returns whether or not this sphere intersects a box. */
|
|
//bool intersects(const AABB& box) const
|
|
//{
|
|
// return Math::intersects(*this, box);
|
|
//}
|
|
/** Returns whether or not this sphere intersects a plane. */
|
|
//bool intersects(const Plane& plane) const
|
|
//{
|
|
// return Math::intersects(*this, plane);
|
|
//}
|
|
/** Returns whether or not this sphere intersects a point. */
|
|
bool intersects(const Vec3& v) const
|
|
{
|
|
return ((v - _center).lengthSquared() <= _radius * _radius);
|
|
}
|
|
/** Merges another Sphere into the current sphere */
|
|
void merge(const PUSphere& oth);
|
|
|
|
|
|
};
|
|
NS_CC_END
|
|
|
|
#endif
|