RedCore/cocos2d/cocos/physics3d/CCPhysics3DShape.h

/****************************************************************************
 Copyright (c) 2015-2017 Chukong Technologies Inc.
 
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#ifndef __PHYSICS_3D_SHAPE_H__
#define __PHYSICS_3D_SHAPE_H__

#include "base/CCRef.h"
#include "base/ccConfig.h"
#include "math/CCMath.h"

#if CC_USE_3D_PHYSICS

#if (CC_ENABLE_BULLET_INTEGRATION)

class btCollisionShape;

NS_CC_BEGIN
/**
 * @addtogroup _3d
 * @{
 */

/**
 * @brief Create a physical shape(box, sphere, cylinder, capsule, convexhull, mesh and heightfield)
 */
class CC_DLL Physics3DShape : public Ref
{
public:
    enum class ShapeType
    {
        UNKNOWN = 0,
        BOX,
        SPHERE,
        CYLINDER,
        CAPSULE,
        CONVEX,
        MESH,
        HEIGHT_FIELD,
        COMPOUND
    };
    
    /**
     * get shape type
     */
    virtual ShapeType getShapeType() const;
    
    /**
     * create box shape
     * @param extent The extent of sphere.
     */
    static Physics3DShape* createBox(const cocos2d::Vec3& extent);
    
    /**
     * create sphere shape
     * @param radius The radius of sphere.
     */
    static Physics3DShape* createSphere(float radius);
    
    /**
     * create cylinder shape
     * @param radius The radius of cylinder.
     * @param height The height.
     */
    static Physics3DShape* createCylinder(float radius, float height);
    
    /**
     * create capsule shape
     * @param radius The radius of capsule.
     * @param height The height (cylinder part).
     */
    static Physics3DShape* createCapsule(float radius, float height);

    /**
     * create convex hull
     * @param points The vertices of convex hull
     * @param numPoints The number of vertices.
     */
    static Physics3DShape* createConvexHull(const cocos2d::Vec3 *points, int numPoints);

    /**
     * create mesh
     * @param triangles The pointer of triangle list
     * @param numTriangles The number of triangles.
     */
    static Physics3DShape* createMesh(const cocos2d::Vec3 *triangles, int numTriangles);

    /**
     * create heightfield
     * @param heightStickWidth The Width of heightfield
     * @param heightStickLength The Length of heightfield.
     * @param heightfieldData The Data of heightfield.
     * @param minHeight The minHeight of heightfield.
     * @param maxHeight The maxHeight of heightfield.
     * @param flipQuadEdges if flip QuadEdges
     */
    static Physics3DShape* createHeightfield(int heightStickWidth,int heightStickLength
        , const void* heightfieldData, float heightScale
        , float minHeight, float maxHeight
        , bool useFloatDatam, bool flipQuadEdges, bool useDiamondSubdivision = false);

    /**
     * create Compound Shape
     * @param shapes The list of child shape
     */
    static Physics3DShape* createCompoundShape(const std::vector<std::pair<Physics3DShape *, Mat4>> &shapes);

    
#if CC_ENABLE_BULLET_INTEGRATION
    btCollisionShape* getbtShape() const { return _btShape; }
#endif
    
CC_CONSTRUCTOR_ACCESS:
    Physics3DShape();
    ~Physics3DShape();
    
    bool initBox(const cocos2d::Vec3& ext);
    bool initSphere(float radius);
    bool initCylinder(float radius, float height);
    bool initCapsule(float radius, float height);
    bool initConvexHull(const cocos2d::Vec3 *points, int numPoints);
    bool initMesh(const cocos2d::Vec3 *triangles, int numTriangles);
    bool initHeightfield(int heightStickWidth,int heightStickLength
        , const void* heightfieldData, float heightScale
        , float minHeight, float maxHeight
        , bool useFloatDatam, bool flipQuadEdges
        , bool useDiamondSubdivision);
    bool initCompoundShape(const std::vector<std::pair<Physics3DShape *, Mat4>> &shapes);
    
protected:
    ShapeType _shapeType; //shape type
    
#if (CC_ENABLE_BULLET_INTEGRATION)
    btCollisionShape*  _btShape;
    unsigned char *_heightfieldData;
    std::vector<Physics3DShape *> _compoundChildShapes;
#endif
};

// end of 3d group
/// @}

NS_CC_END

#endif // CC_ENABLE_BULLET_INTEGRATION

#endif //CC_USE_3D_PHYSICS

#endif // __PHYSICS_3D_SHAPE_H__