mirror of https://github.com/axmolengine/axmol.git
121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
/****************************************************************************
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Copyright (c) 2013-2014 Chukong Technologies Inc.
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http://www.cocos2d-x.org
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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 __CC_FRUSTUM_H__
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#define __CC_FRUSTUM_H__
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#include "CCPlatformMacros.h"
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#include "kazmath/kazmath.h"
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NS_CC_BEGIN
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class ViewTransform
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{
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public:
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ViewTransform();
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~ViewTransform();
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void Init(const kmVec3& pos, const kmVec3& focus, const kmVec3& up);
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const kmVec3& getPosition() const { return _position; }
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const kmVec3& getFocus() const { return _focus; }
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const kmVec3& getDirection() const;
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const kmVec3& getRight() const;
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const kmVec3& getUp() const;
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protected:
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void LazyAdjust() const;
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kmVec3 _position;
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kmVec3 _focus;
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kmVec3 _up;
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mutable bool _dirty;
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mutable kmMat4 _matrix;
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mutable kmVec3 _adjustDir;
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mutable kmVec3 _adjustRight;
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mutable kmVec3 _adjustUp;
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};
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class AABB
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{
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public:
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AABB(const kmVec3& min, const kmVec3& max);
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~AABB();
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kmVec3 getCenter() const;
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float getDimensionX() const;
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float getDimensionY() const;
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float getDimensionZ() const;
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kmVec3 getPositivePoint(const kmVec3& direction) const;
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kmVec3 getNegativePoint(const kmVec3& direction) const;
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const AABB& expand(const kmVec3& point);
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protected:
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kmVec3 _min;
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kmVec3 _max;
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};
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class Frustum
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{
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public:
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enum class IntersectResult
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{
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OUTSIDE = 0,
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INTERSECT = 1,
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INSIDE = 2
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};
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Frustum();
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~Frustum();
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void setupProjectionOrthogonal(const ViewTransform& view, float width, float height, float near, float far);
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void setupProjectionPerspective(const ViewTransform& view, float left, float right, float top, float bottom, float near, float far);
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void setupProjectionPerspectiveFov(const ViewTransform& view, float fov, float ratio, float near, float far);
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void setupFromMatrix(const kmMat4& view, const kmMat4& projection);
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IntersectResult intersectPoint(const kmVec3& point) const;
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IntersectResult intersectAABB(const AABB& aabb) const;
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IntersectResult intersectSphere(const kmVec3& center, float radius) const;
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protected:
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enum FrustumPlane
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{
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FRUSTUM_NEAR = 0,
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FRUSTUM_FAR = 1,
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FRUSTUM_BOTTOM = 2,
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FRUSTUM_TOP = 3,
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FRUSTUM_LEFT = 4,
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FRUSTUM_RIGHT = 5,
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FRUSTUM_NUMBER = 6
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};
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kmPlane _frustumPlanes[FrustumPlane::FRUSTUM_NUMBER];
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};
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NS_CC_END
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#endif |