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SwRI can revise these Terms at any time * without notice by updating this posting. * * Trademarks * * The SwRI logo is a trademark of SwRI in the United States and other countries. * */ #ident "@(#) copy_pdata.c 1.7 05/08/19 SwRI" #include "libbase_idfs.h" /******************************************************************************* * * * IR_COPY_PITCH_ANGLE SUBROUTINE * * * * DESCRIPTION * * This routine is called to process pitch angle data when the time range * * for each element of the sweep are the same (parallel acquisition). In * * this case, element zero of the pitch angle array has already been computed,* * while all other elements are simply copied for the three components that * * were acquired for element zero. * * * * INPUT VARIABLES * * struct pitch_info *pa_ptr a pointer to the structure that holds pitch * * angle information * * SDDAS_USHORT swp_step current step of the sweep being processed * * * * USAGE * * ir_copy_pitch_angle (pa_ptr, swp_step) * * * * NECESSARY SUBPROGRAMS * * None * * * * EXTERNAL VARIABLES * * None * * * * INTERNAL VARIABLES * * register SDDAS_DOUBLE *dptr pointer to data for the three components * * for the step being processed * * reg SDDAS_DOUBLE *sa_ptr ptr to start az. angles for the 3 components* * for the step being processed * * reg SDDAS_DOUBLE *ea_ptr ptr to stop az. angles for the 3 components * * for the step being processed * * reg SDDAS_DOUBLE *st_ptr ptr to start theta angles for the three * * components for the step being processed * * reg SDDAS_DOUBLE *et_ptr ptr to stop theta angles for the three * * components for the step being processed * * register SDDAS_FLOAT *fptr pointer to the normalization factors for * * the step being processed * * register SDDAS_SHORT i looping variable * * SDDAS_DOUBLE *base_dptr pointer to data for the three components * * for element zero * * SDDAS_DOUBLE *base_saz pointer to start azimuthal angle for the * * three components for element zero * * SDDAS_DOUBLE *base_eaz pointer to stop azimuthal angle for the * * three components for element zero * * SDDAS_DOUBLE *base_stheta pointer to start theta angle for the three * * components for element zero * * SDDAS_DOUBLE *base_etheta pointer to stop theta angle for the three * * components for element zero * * SDDAS_FLOAT time_frac the percentage of the data to be included * * for the delta-t being processed * * SDDAS_LONG offset offset into data locations * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ void ir_copy_pitch_angle (struct pitch_info *pa_ptr, SDDAS_USHORT swp_step) { register SDDAS_DOUBLE *dptr, *sa_ptr, *ea_ptr, *st_ptr, *et_ptr; register SDDAS_FLOAT *fptr; register SDDAS_SHORT i; SDDAS_DOUBLE *base_dptr, *base_saz, *base_eaz, *base_stheta, *base_etheta; SDDAS_FLOAT time_frac = 0.0; SDDAS_LONG offset; /*************************************************************************/ /* Always point to element zero of the memory location. Set frac to */ /* 1.0 since the value in location zero has already been multiplied by */ /* frac. (normalized in ir_idfs_pitch_angles ()) */ /*************************************************************************/ base_saz = pa_ptr->start_az; base_eaz = pa_ptr->stop_az; base_stheta = pa_ptr->start_theta; base_etheta = pa_ptr->stop_theta; base_dptr = pa_ptr->data_val; time_frac = 1.0; /***************************************************************************/ /* Copy the values from element zero to the current step being processed. */ /***************************************************************************/ offset = 3 * swp_step; dptr = pa_ptr->data_val + offset; sa_ptr = pa_ptr->start_az + offset; ea_ptr = pa_ptr->stop_az + offset; st_ptr = pa_ptr->start_theta + offset; et_ptr = pa_ptr->stop_theta + offset; fptr = pa_ptr->time_frac + offset; for (i = 0; i < 3; ++i) { *(dptr + i) = *(base_dptr + i); *(sa_ptr + i) = *(base_saz + i); *(ea_ptr + i) = *(base_eaz + i); *(st_ptr + i) = *(base_stheta + i); *(et_ptr + i) = *(base_etheta + i); *(fptr + i) = time_frac; } /************************************************************************/ /* Reset the flag for each component to process the next delta-t. */ /* This was previously done by ir_acquire_pitch_data(), but this */ /* module is now called by ir_idfs_pitch_angles () for speed-up issues.*/ /************************************************************************/ pa_ptr->all_done[0] = 0; pa_ptr->all_done[1] = 0; pa_ptr->all_done[2] = 0; }