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//
//	File Name:	animFileUitls.h
//
//	Description:
//
//

#ifndef _animFileUtils
#define _animFileUtils

#include <maya/MFnAnimCurve.h>
#include <maya/MAngle.h>
#include <maya/MTime.h>
#include <maya/MDistance.h>

class MArgList;

// The base class for the translators.
//
class animBase {
public:
	animBase();
	virtual ~animBase();

	enum AnimBaseType			{kAnimBaseUnitless, kAnimBaseTime,
									kAnimBaseLinear, kAnimBaseAngular};

	const char *				tangentTypeAsWord(MFnAnimCurve::TangentType);
	MFnAnimCurve::TangentType	wordAsTangentType(char *);
	const char *				infinityTypeAsWord(MFnAnimCurve::InfinityType);
	MFnAnimCurve::InfinityType 	wordAsInfinityType(const char *);
	const char *				outputTypeAsWord(MFnAnimCurve::AnimCurveType);
	MFnAnimCurve::AnimCurveType	typeAsAnimCurveType(AnimBaseType,
													AnimBaseType);

	AnimBaseType				wordAsOutputType(const char *);
	AnimBaseType				wordAsInputType(const char *);
	const char *				boolInputTypeAsWord(bool);

	double						asDouble(ifstream &);
	char *						asString(ifstream &);
	char *						asWord(ifstream &, bool = false);
	char 						asChar(ifstream &);

	bool						isNextNumeric(ifstream &);
	bool						isEquivalent(double, double);
protected:
	void						resetUnits();
	void						advance(ifstream &);

	MTime::Unit					timeUnit;
	MAngle::Unit				angularUnit;
	MDistance::Unit				linearUnit;
};

class MAnimCurveClipboard;
class MAnimCurveClipboardItem;
class animReader : public animBase {
public:
	animReader();
	virtual ~animReader();

	MStatus	readClipboard(ifstream &, MAnimCurveClipboard&);
protected:
	bool	readAnimCurve(ifstream&, MAnimCurveClipboardItem&);
	void	convertAnglesAndWeights2To3(MFnAnimCurve::AnimCurveType, bool,
										MAngle &, double &);
	void	convertAnglesAndWeights3To2(MFnAnimCurve::AnimCurveType, bool,
										MAngle &, double &);

	bool  	convertAnglesFromV2To3;
	bool  	convertAnglesFromV3To2;
	double	animVersion;
};

class animWriter : public animBase {
public:
	animWriter();
	virtual ~animWriter();
	
	MStatus	writeClipboard(	ofstream&, const MAnimCurveClipboard&, 
							bool = false, bool = false);
protected:
	bool	writeHeader(ofstream&);
	bool	writeAnim(	ofstream&, const MAnimCurveClipboardItem&, 
						bool = false, bool = false);
	bool 	writeAnimCurve(	ofstream&, const MObject *, 
							MFnAnimCurve::AnimCurveType,
							bool = false);
};

class animUnitNames {
public:
	animUnitNames();
	virtual ~animUnitNames();

	static void setToLongName(const MAngle::Unit&, MString&);
	static void setToShortName(const MAngle::Unit&, MString&);

	static void setToLongName(const MDistance::Unit&, MString&);
	static void setToShortName(const MDistance::Unit&, MString&);

	static void setToLongName(const MTime::Unit&, MString&);
	static void setToShortName(const MTime::Unit&, MString&);

	static bool setFromName(const MString&, MAngle::Unit&);
	static bool setFromName(const MString&, MDistance::Unit&);
	static bool setFromName(const MString&, MTime::Unit&);
};
#endif /* _animFileUtils */