mirror of https://github.com/axmolengine/axmol.git
91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/****************************************************************************
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Copyright (c) 2014-2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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https://axmol.dev/
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __AX_FRUSTUM_H_
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#define __AX_FRUSTUM_H_
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#include "base/Macros.h"
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#include "math/Math.h"
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#include "3d/AABB.h"
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#include "3d/OBB.h"
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#include "3d/Plane.h"
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namespace ax
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{
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class Camera;
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/**
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* the frustum is a six-side geometry, usually use the frustum to do fast-culling:
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* check a entity whether is a potential visible entity
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* @js NA
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* @lua NA
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*/
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class AX_DLL Frustum
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{
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friend class Camera;
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public:
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/**
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* Constructor & Destructor.
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*/
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Frustum() : _clipZ(true), _initialized(false) {}
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~Frustum() {}
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/**
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* init frustum from camera.
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*/
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bool initFrustum(const Camera* camera);
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/**
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* is aabb out of frustum.
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*/
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bool isOutOfFrustum(const AABB& aabb) const;
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/**
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* is obb out of frustum
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*/
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bool isOutOfFrustum(const OBB& obb) const;
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/**
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* get & set z clip. if bclipZ == true use near and far plane
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*/
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void setClipZ(bool clipZ) { _clipZ = clipZ; }
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bool isClipZ() { return _clipZ; }
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protected:
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/**
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* create clip plane
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*/
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void createPlane(const Camera* camera);
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Plane _plane[6]; // clip plane, left, right, top, bottom, near, far
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bool _clipZ; // use near and far clip plane
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bool _initialized;
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};
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}
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#endif //__AX_FRUSTUM_H_
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