axmol/extensions/Particle3D/CCParticle3DRender.h

/****************************************************************************
 Copyright (c) 2015 Chukong Technologies Inc.
 
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 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 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 __CC_PARTICLE_3D_RENDER_H__
#define __CC_PARTICLE_3D_RENDER_H__

#include <vector>

#include "renderer/CCRenderState.h"
#include "base/CCRef.h"
#include "math/CCMath.h"


NS_CC_BEGIN

class ParticleSystem3D;
class Renderer;
class MeshCommand;
class Sprite3D;
class GLProgramState;
class IndexBuffer;
class VertexBuffer;
class Texture2D;

/**
 * 3d particle render
 */
class CC_DLL Particle3DRender : public Ref
{
    friend class ParticleSystem3D;
public:

    virtual void render(Renderer* renderer, const Mat4 &transform, ParticleSystem3D* particleSystem) = 0;

    /** Perform activities when a Renderer is started.
    */
    virtual void notifyStart();
    /** Perform activities when a Renderer is stopped.
    */
    virtual void notifyStop();
    /** Notify that the Particle System is rescaled.
    */
    virtual void notifyRescaled(const Vec3& scale);
    
    void setVisible(bool isVisible) { _isVisible = isVisible; }
    
    bool isVisible() const { return _isVisible; }

    void setDepthTest(bool isDepthTest);
    void setDepthWrite(bool isDepthWrite);
    void setBlendFunc(const BlendFunc& blendFunc);

    void copyAttributesTo (Particle3DRender *render);

    virtual void reset(){}

CC_CONSTRUCTOR_ACCESS:
    Particle3DRender();
    virtual ~Particle3DRender();
    
protected:
    ParticleSystem3D *_particleSystem;
    RenderState::StateBlock* _stateBlock;
    bool  _isVisible;
    Vec3 _rendererScale;
    bool _depthTest;
    bool _depthWrite;
};

// particle render for quad
class CC_DLL Particle3DQuadRender : public Particle3DRender
{
public:
    static Particle3DQuadRender* create(const std::string& texFile = "");
    
    virtual void render(Renderer* renderer, const Mat4 &transform, ParticleSystem3D* particleSystem) override;

    virtual void reset()override;
CC_CONSTRUCTOR_ACCESS:
    Particle3DQuadRender();
    virtual ~Particle3DQuadRender();

protected:

    bool initQuadRender(const std::string& texFile);
    
protected:
    MeshCommand*           _meshCommand;
    Texture2D*             _texture;
    GLProgramState*        _glProgramState;
    IndexBuffer*           _indexBuffer; //index buffer
    VertexBuffer*          _vertexBuffer; // vertex buffer
    
    struct posuvcolor
    {
        Vec3 position;
        Vec2 uv;
        Vec4 color;
    };

    std::vector<posuvcolor> _posuvcolors;   //vertex data
    std::vector<unsigned short> _indexData; //index data
    std::string _texFile;
};

// particle render for Sprite3D
class CC_DLL Particle3DModelRender : public Particle3DRender
{
public:
    static Particle3DModelRender* create(const std::string& modelFile, const std::string &texFile = "");

    virtual void render(Renderer* renderer, const Mat4 &transform, ParticleSystem3D* particleSystem) override;
    
    virtual void reset()override;
CC_CONSTRUCTOR_ACCESS:
    Particle3DModelRender();
    virtual ~Particle3DModelRender();
    
protected:
    std::vector<Sprite3D *> _spriteList;
    std::string _modelFile;
    std::string _texFile;
    Vec3 _spriteSize;
};

NS_CC_END

#endif