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/*  Visualization Library                                                             */
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#ifndef Clear_INCLUDE_ONCE
#define Clear_INCLUDE_ONCE

#include <vlGraphics/link_config.hpp>
#include <vlCore/Vector4.hpp>
#include <vlGraphics/Renderable.hpp>

namespace vl
{
  //------------------------------------------------------------------------------
  // Clear
  //------------------------------------------------------------------------------
  class VLGRAPHICS_EXPORT Clear: public Renderable
  {
    VL_INSTRUMENT_CLASS(vl::Clear, Renderable)

  public:
    Clear();

    virtual void render_Implementation(const Actor*, const Shader*, const Camera*, OpenGLContext*) const;

    void setClearColorBuffer(bool clear)   { mClearColorBuffer   = clear; }

    void setClearDepthBuffer(bool clear)   { mClearDepthBuffer   = clear; }

    void setClearStencilBuffer(bool clear) { mClearStencilBuffer = clear; }

    void setClearColorValue(const fvec4& clear_val) { mClearColorValue   = clear_val; }
    
    void setClearColorValueInt(const ivec4& clear_val) { mClearColorValueInt   = clear_val; }
    
    void setClearColorValueUInt(const uvec4& clear_val) { mClearColorValueUInt   = clear_val; }
    
    void setClearDepthValue(float clear_val)        { mClearDepthValue   = clear_val; }
    
    void setClearStencilValue(int clear_val)      { mClearStencilValue = clear_val; }

    void setClearColorMode(EClearColorMode mode) { mClearColorMode = mode; }
    
    EClearColorMode clearColorMode() const { return mClearColorMode; }

    void setScissorBox(int x, int y, int w, int h)     { mScissorBox[0] = x; mScissorBox[1] = y; mScissorBox[2] = w; mScissorBox[3] = h; }
    
    void getScissorBox(int& x, int& y, int& w, int& h) { x = mScissorBox[0]; y = mScissorBox[1]; w = mScissorBox[2]; h = mScissorBox[3]; }

    // Renderable interface implementation.

    virtual void updateDirtyBufferObject(EBufferObjectUpdateMode) {}

    virtual void deleteBufferObject() {}

  protected:
    virtual void computeBounds_Implementation() { setBoundingBox(AABB()); setBoundingSphere(Sphere()); }

  protected:
    fvec4 mClearColorValue;
    ivec4 mClearColorValueInt;
    uvec4 mClearColorValueUInt;
    int mScissorBox[4];
    EClearColorMode mClearColorMode;
    float mClearDepthValue;
    int mClearStencilValue;
    bool mClearColorBuffer;
    bool mClearDepthBuffer;
    bool mClearStencilBuffer;
  };
}

#endif