DrawNode3D.h

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/****************************************************************************
 Copyright (c) 2014-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
 
 http://www.cocos2d-x.org
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
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 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 
 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
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 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#ifndef __DRAW_NODE_3D_H__
#define __DRAW_NODE_3D_H__
 
#include "cocos2d.h"
 
NS_CC_BEGIN
 
class DrawNode3D: public cocos2d::Node
{
public:
    static cocos2d::DrawNode3D* create();
    
    void drawLine(const cocos2d::Vec3 &from, const cocos2d::Vec3 &to, const Color4F &color);
    
    void drawCube(cocos2d::Vec3* vertices, const Color4F &color);
    
    void clear();
    
    const BlendFunc& getBlendFunc() const;
    
    void setBlendFunc(const BlendFunc &blendFunc);
 
    void updateCommand(cocos2d::Renderer* renderer, 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:
 
    void onBeforeDraw();
    void onAfterDraw();
 
    struct V3F_C4B
    {
        cocos2d::Vec3     vertices;
        Color4B  colors;
    };
    void ensureCapacity(int count);
 
 
    BlendFunc   _blendFunc;
    cocos2d::CustomCommand _customCommand;
    backend::ProgramState* _programStateLine                    = nullptr;
    backend::DepthStencilDescriptor *_depthstencilDescriptor    = nullptr;
    backend::UniformLocation _locMVPMatrix;
    std::vector<V3F_C4B> _bufferLines;
    
 
private:
    CC_DISALLOW_COPY_AND_ASSIGN(DrawNode3D);
 
    bool _isDirty                   = true;
    bool _rendererDepthTestEnabled  = true;
};
 
NS_CC_END
 
#endif // __DRAW_NODE_3D_H__