axmol/tests/cpp-tests/Classes/Sprite3DTest/DrawNode3D.h

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 Copyright (c) 2014-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 
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#ifndef __DRAW_NODE_3D_H__
#define __DRAW_NODE_3D_H__

#include "cocos2d.h"

NS_CC_BEGIN

/**
 * Copy DrawNode for 3D geometry drawing.
 */
class DrawNode3D: public cocos2d::Node
{
public:
    /** creates and initialize a DrawNode3D node */
    static cocos2d::DrawNode3D* create();
    
    /**
     * Draw 3D Line
     */
    void drawLine(const cocos2d::Vec3 &from, const cocos2d::Vec3 &to, const Color4F &color);
    
    /**
    * Draw 3D cube
    * @param point to a vertex array who has 8 element.
    *        vertices[0]:Left-top-front,
    *        vertices[1]:Left-bottom-front,
    *        vertices[2]:Right-bottom-front,
    *        vertices[3]:Right-top-front,
    *        vertices[4]:Right-top-back,
    *        vertices[5]:Right-bottom-back,
    *        vertices[6]:Left-bottom-back,
    *        vertices[7]:Left-top-back.
    * @param color
    */
    void drawCube(cocos2d::Vec3* vertices, const Color4F &color);
    
    /** Clear the geometry in the node's buffer. */
    void clear();
    
    /**
    * @js NA
    * @lua NA
    */
    const BlendFunc& getBlendFunc() const;
    
    /**
    * @code
    * When this function bound into js or lua,the parameter will be changed
    * In js: var setBlendFunc(var src, var dst)
    * @endcode
    * @lua NA
    */
    void setBlendFunc(const BlendFunc &blendFunc);

    void onDraw(const cocos2d::Mat4& transform, uint32_t flags);
    
    // Overrides
    virtual void draw(cocos2d::Renderer* renderer, const cocos2d::Mat4& transform, uint32_t flags) override;
    
CC_CONSTRUCTOR_ACCESS:
    DrawNode3D();
    virtual ~DrawNode3D();
    virtual bool init() override;

protected:
    struct V3F_C4B
    {
        cocos2d::Vec3     vertices;
        Color4B  colors;
    };
    void ensureCapacity(int count);

    GLuint      _vao;
    GLuint      _vbo;

    int         _bufferCapacity;
    GLsizei     _bufferCount;
    V3F_C4B*    _buffer;

    BlendFunc   _blendFunc;
    cocos2d::CustomCommand _customCommand;

    bool        _dirty;

private:
    CC_DISALLOW_COPY_AND_ASSIGN(DrawNode3D);
};

NS_CC_END

#endif // __DRAW_NODE_3D_H__