CCDrawNode

#ifndef __CCDRAWNODES_CCDRAW_NODE_H__

#define __CCDRAWNODES_CCDRAW_NODE_H__

#include "base_nodes/CCNode.h"

#include "ccTypes.h"

NS_CC_BEGIN

/** CCDrawNode

 Node that draws dots, segments and polygons.

 Faster than the "drawing primitives" since they it draws everything in one single batch.

 

 @since v2.1

 */

class CC_DLL CCDrawNode : public CCNode

{

protected:

    GLuint      m_uVao;

    GLuint      m_uVbo;

    

    unsigned int    m_uBufferCapacity;

    GLsizei         m_nBufferCount;

    ccV2F_C4B_T2F   *m_pBuffer;

    

    ccBlendFunc     m_sBlendFunc;

    

    bool            m_bDirty;

    

public:

    static CCDrawNode* create();

    virtual ~CCDrawNode();

    

    virtual bool init();

    virtual void draw();

    

    /** draw a dot at a position, with a given radius and color */

    void drawDot(const CCPoint &pos, float radius, const ccColor4F &color);

    

    /** draw a segment with a radius and color */

    void drawSegment(const CCPoint &from, const CCPoint &to, float radius, const ccColor4F &color);

    

    /** draw a polygon with a fill color and line color */

    void drawPolygon(CCPoint *verts, unsigned int count, const ccColor4F &fillColor, float borderWidth, const ccColor4F &borderColor);

    

    /** Clear the geometry in the node's buffer. */

    void clear();

    

    ccBlendFunc getBlendFunc() const;

    void setBlendFunc(const ccBlendFunc &blendFunc);

    

    CCDrawNode();

    

private:

    void ensureCapacity(unsigned int count);

    void render();

};

NS_CC_END

#endif // __CCDRAWNODES_CCDRAW_NODE_H__