#ifndef _SHAVERENDERCALLBACK_H_
#define _SHAVERENDERCALLBACK_H_

// Shave and a Haircut
// (c) 2019 Epic Games
// US Patent 6720962

#include <maya/MDagPath.h>
#include <maya/MObject.h>
#include <maya/MRenderCallback.h>
#include <maya/MFnCamera.h>
#include <maya/MRenderData.h>
#include <maya/MRenderShadowData.h>
#include <maya/MRenderUtil.h>

#include "shaveRender.h"

#ifndef  MM_TO_INCH
# define MM_TO_INCH                     0.03937
#endif

class shaveMayaRenderer;


class shaveRenderCallback : public MRenderCallback 
{
public:
					shaveRenderCallback(shaveMayaRenderer* renderer);
					~shaveRenderCallback() {}
	virtual bool	shadowCastCallback (const MRenderShadowData &data);
	virtual bool	renderCallback (const MRenderData &data);
	virtual bool	postProcessCallback (const MRenderData &data);

	static	void	cleanupTileCallback();
			void	disableCamRender();
			void	enableCamRender(const MDagPath& camera);

	static	MStatus	getRenderCamera(
						const MRenderData& renderData, MDagPath& renderCamPath
					);

	static	void	initTileCallback(
						const MRenderData& mayaRenderData,
						shaveRender::SceneInfo* shaveRenderData
					);

	static	void	setGeomRender(bool setIt);

	static	void	tileRendered(
						unsigned int left,
						unsigned int right,
						unsigned int bottom,
						unsigned int top
					);

private:
	unsigned int						width, height;
	bool								ignoreFilmGate;
	double								fov_ratio;
	int									cam_width, cam_height;
	bool								mDoingCamRender;
	static bool							mDoingGeomRender;
	static bool							mDoTiles;
	shaveMayaRenderer*					mRenderer;
	MDagPath							mRenderCamera;
	static const MRenderData*			mMayaRenderData;
	static const shaveRender::Pixel*	mShavePixels;
};


inline void shaveRenderCallback::setGeomRender(bool setIt)
{	mDoingGeomRender = setIt;	}


float shaveZtoMaya(float);

#endif