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thd_center.c File Reference
#include "mrilib.h"Go to the source code of this file.
Functions | |
| THD_fvec3 | THD_dataset_center (THD_3dim_dataset *dset) |
Function Documentation
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Definition at line 8 of file thd_center.c. References THD_3dim_dataset::daxes, ENTRY, ISVALID_DSET, LOAD_FVEC3, THD_dataxes::nxx, THD_dataxes::nyy, THD_dataxes::nzz, RETURN, THD_3dmm_to_dicomm(), THD_dataxes::xxdel, THD_dataxes::xxorg, THD_fvec3::xyz, THD_dataxes::yydel, THD_dataxes::yyorg, THD_dataxes::zzdel, and THD_dataxes::zzorg. Referenced by main(), and THD_dataset_mismatch().
00009 {
00010 THD_dataxes * daxes ;
00011 THD_fvec3 fv1 , fv2 ;
00012
00013 ENTRY("THD_dataset_center") ;
00014
00015 if( !ISVALID_DSET(dset) ){ LOAD_FVEC3(fv1,0,0,0); RETURN(fv1); }
00016
00017 daxes = dset->daxes ;
00018
00019 LOAD_FVEC3(fv1 , daxes->xxorg , daxes->yyorg , daxes->zzorg) ;
00020 fv1 = THD_3dmm_to_dicomm( dset , fv1 ) ;
00021
00022 LOAD_FVEC3(fv2 , daxes->xxorg + (daxes->nxx-1)*daxes->xxdel ,
00023 daxes->yyorg + (daxes->nyy-1)*daxes->yydel ,
00024 daxes->zzorg + (daxes->nzz-1)*daxes->zzdel ) ;
00025 fv2 = THD_3dmm_to_dicomm( dset , fv2 ) ;
00026
00027 fv1.xyz[0] = 0.5*(fv1.xyz[0]+fv2.xyz[0]) ;
00028 fv1.xyz[1] = 0.5*(fv1.xyz[1]+fv2.xyz[1]) ;
00029 fv1.xyz[2] = 0.5*(fv1.xyz[2]+fv2.xyz[2]) ;
00030
00031 RETURN(fv1) ;
00032 }
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