mirror of https://github.com/axmolengine/axmol.git
113 lines
2.9 KiB
C++
113 lines
2.9 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_PLANE_H_
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#define __AX_PLANE_H_
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#include "base/Macros.h"
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#include "math/Math.h"
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namespace ax
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{
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enum class PointSide
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{
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IN_PLANE,
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FRONT_PLANE,
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BEHIND_PLANE,
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};
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/**
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* Defines plane
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* @js NA
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* @lua NA
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**/
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class AX_DLL Plane
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{
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public:
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/**
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* create plane from tree point.
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*/
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Plane(const Vec3& p1, const Vec3& p2, const Vec3& p3);
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/**
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* create plane from normal and dist.
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*/
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Plane(const Vec3& normal, float dist);
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/**
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* create plane from normal and a point on plane.
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*/
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Plane(const Vec3& normal, const Vec3& point);
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/**
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* create a default plan whose normal is (0, 0, 1), and _dist is 0, xoy plan in fact.
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*/
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Plane();
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/**
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* init plane from tree point.
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*/
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void initPlane(const Vec3& p1, const Vec3& p2, const Vec3& p3);
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/**
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* init plane from normal and dist.
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*/
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void initPlane(const Vec3& normal, float dist);
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/**
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* init plane from normal and a point on plane.
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*/
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void initPlane(const Vec3& normal, const Vec3& point);
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/**
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* dist to plane, > 0 normal direction
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*/
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float dist2Plane(const Vec3& p) const;
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/**
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* Gets the plane's normal.
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*/
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const Vec3& getNormal() const { return _normal; }
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/**
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* Gets the plane's distance to the origin along its normal.
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*/
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float getDist() const { return _dist; }
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/**
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* Return the side where the point is.
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*/
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PointSide getSide(const Vec3& point) const;
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protected:
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Vec3 _normal; // the normal line of the plane
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float _dist; // original displacement of the normal
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};
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}
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#endif
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