# ctfInfo Object

## information from souce codes

## include file

## Information from source codes

## ctfInfo.h

    #ifndef CTF_INFO_H
    #define CTF_INFO_H
    #include

    /* constant begin */
    #define ctfInfoModeWithAmplitudeContrast    0x0f
    #define ctfInfoModeWithMTF                  0x10
    #define ctfInfoModeWithIlluminationAngle    0x20
    #define ctfInfoModeWithEnergySpread         0x40
    #define ctfInfoModeAbsoluteValue            0x100

    typedef enum ctfInfoMode {
    	ctfInfoModePhaseCTFOnly   = 0,
    	ctfInfoModePhaseAndAmpCTF = 1
    } ctfInfoMode;

    typedef enum ctfInfoMTFMode {
    	ctfInfoMTFModeSingleExp = 0,
    	ctfInfoMTFModeSingleLorentzian = 1,
    	ctfInfoMTFModeBoth      = 2,
    	ctfInfoMTFModeLinear    = 3,
    	ctfInfoMTFModeBothSum   = 4,
    	ctfInfoMTFModePolynomial = 5
    } ctfInfoMTFMode;
    /* constant end */

    /* struct begin */
    typedef struct moleculrEnvelope {
    	char* filename;
    	int   nR;
    	float* R;
    	float* Envelope;
    	int    mode;
    } molecularEnvelope;

    typedef struct ctfInfo {
    	float kV;      /* kV */
    	float defocus; /* A : Underfocus is plus, while overfocus is minus*/
    	float Cc;      /* mm */
    	float dE;
    	float Cs;      /* mm */
    	float Ain;     /* mrad : Illumination Angle */
    	long  flagWin; /* Windowing */
    	float CutLow;  /* Windowing: CutLow  A-1 */
    	float CutHigh; /* Windowing: CutHigh A-1 */

    	float I0;      /* Intensity */
    	float Isignal; /* Intensity of signal */

    	float ratioOfAmpToPhase; /* The ratio of amp to phase */

    	float Inoise;  /* Intensity of noise : Isignal*/
    	long  flagWhiteNoise;
    	float WhiteNoise;  /* Affected by MTF(R) */

    	long  flagWhiteNoiseRaising;
    	float WhiteNoiseRaising; /* WhiteNoise Raising depending upon R */

    	long  flagMaxWhiteNoise;
    	float MaxWhiteNoise; /* max White Noise*/

    	long  flagNdependentWhiteNoise;
    	float NdependentWhiteNoise; /* max White Noise*/

    	float Inoise2; /* Intensity of noise */
    	long  flagWhiteNoise2;
    	float WhiteNoise2; /* Not Affected by MTF(R)*/

    	int   flagAstigmatism;
    	float defocus2D[2];      /* A : Normally [0]: Max [1]: Min */
    	float defocus0axis;      /* radian : angle of the defocus2D[0]-axis */

    	long mode;

    	long  flagMagnification;
    	float Magnification;

    	/* MTF(R): Modulation Transfer Function */
    	ctfInfoMTFMode MTFMode;
    	float BofMTF;  /* Exponential: exp(-B R)   */
    	float BofMTF2; /* Lorentzian : 1/(B*B+R*R) */
    	float WeightOfSecondTermForMTF; /* 0 <-> 1 */
    	/*for PolynomialExpNoise*//*d = degree*/
    	float BofMTFd2;
    	float BofMTFd3;
    	float BofMTFd4;
    	float BofMTFd5;
    	float BofMTFd6;

    	/* Molecular Envelope: Scattering Factor */
    	/* For Gaussian */
    	float MolecEnv;                   /* A : */
    	/* For Table */
    	long  flagMolecEnvTable;
    	molecularEnvelope MolecEnvTable;
    	/* For Lorentzian */
    	long flagElastic;
    	float Elastic;
    	float ElasticShift;
    	float ElasticWidth;
    	float ElasticRing;
    	float ElasticRingPosition;
    	float ElasticRingWidth;

    	/* Stage Vibration */
    	long  flagVibration;
    	long  VibrationMode;
    	float BofVibration;

    	/* Aliasing and Sampling */
    	long flagAliasing;
    	float NyquistFrequency;
    	long flagSampling;

    	/* Inelastic Signal */
    	/* For Gaussian */
    	long flagWithInElastic;
    	float InElasticGaussian;
    	/* For Table */
    	long flagWithInElasticTable;
    	molecularEnvelope InElasticEnvTable;
    	/* Lorentzian */
    	long flagInElastic;
    	float InElastic;
    	float InElasticShift;
    	float InElasticWidth;
    	float InElasticRing;
    	float InElasticRingPosition;
    	float InElasticRingWidth;
    } ctfInfo;
    /* struct end */

    #ifdef __cplusplus
    extern "C" {
    #endif

    /* prototype begin */

    extern void ctfInfoSendByPVM(ctfInfo* info, int tid, long mode);
    extern void ctfInfoRecieveByPVM(ctfInfo* info, int tid, long mode);
    extern float ctfSignalFunction(ctfInfo* info, float R, long mode);
    extern float ctfNoiseFunction(ctfInfo* info, float R, long mode);
    extern float ctfNoise2Function(ctfInfo* info, float R, long mode);
    extern float ctfSignalPowerFunction(ctfInfo* info, float R, long mode);
    extern float ctfNoisePowerFunction(ctfInfo* info, float R, long mode);
    extern float ctfNoise2PowerFunction(ctfInfo* info, float R, long mode);
    extern float ctfScatteringFunction(ctfInfo* info, float R, long mode);
    extern float ctfMolecularEnvelopeFunction(ctfInfo* info, float R, long mode);
    extern float ctfMolecularEnvelopeInElasticFunction(ctfInfo* info, float R, long mode);
    extern float ctfVibrationFunction(ctfInfo* info, float R, long mode);
    extern float ctfFunction(ctfInfo* info, float R, long mode);
    extern float ctfFunctionSampling(float R, float Nyquist, long mode);
    extern void  ctfFunctionPVMStart(ctfInfo* info, float R, int tid, long mode);
    extern float ctfFunctionPVMEnd(ctfInfo* info, float R, int tid, long mode);
    extern void  ctfFunctionPVMServer();
    extern float ctfEnvelopFunction(ctfInfo* info, float R, long mode);
    extern float ctfMTFFunction(ctfInfo* info, float R, long mode);
    extern float ctfFunction2D(ctfInfo* info, float X, float Y, long mode);
    extern float wavelengthOfElectron(float E);
    extern float defocusDeterminationFromThonRing(ctfInfo* info, float R, long n, long mode);
    extern void ctfWeightForCorrectionUsage(FILE* fpt);
    extern float ctfWeightForCorrection2D(ctfInfo* info, float X, float Y, long mode);
    extern float ctfWeightForCorrection(ctfInfo* info, float R, long mode);
    extern void lmolecularEnvelopeFileRead(FILE* fpt, molecularEnvelope* mol, int mode);
    extern void lmolecularEnvelopeFileWrite(FILE* fpt, molecularEnvelope* mol, int mode);
    extern void lmolecularEnvelopeResampling(molecularEnvelope* dst, molecularEnvelope* src, float dR, float RMax, int mode);
    extern float lmolecularEnvelopeDataGet(molecularEnvelope* src, float R, int mode);
    extern void ctfInfoRead(FILE* fpt, ctfInfo* ctf, char* pre, int mode);
    extern void ctfInfoWrite(FILE* fpt, ctfInfo ctf, char* pre, int mode);
    /* prototype end */

    #ifdef __cplusplus
    };
    #endif

    #endif