HAWKI Pipeline Reference Manual 1.8.12
hawki_image.c
00001 /* $Id: hawki_image.c,v 1.3 2012/12/04 09:17:04 cgarcia Exp $
00002  *
00003  * This file is part of the HAWKI Pipeline
00004  * Copyright (C) 2002,2003 European Southern Observatory
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  */
00020 
00021 /*
00022  * $Author: cgarcia $
00023  * $Date: 2012/12/04 09:17:04 $
00024  * $Revision: 1.3 $
00025  * $Name: hawki-1_8_12 $
00026  */
00027 
00028 #ifdef HAVE_CONFIG_H
00029 #include <config.h>
00030 #endif
00031 
00032 /*-----------------------------------------------------------------------------
00033                                 Includes
00034  -----------------------------------------------------------------------------*/
00035 
00036 #include <math.h>
00037 #include <string.h>
00038 #include <cpl.h>
00039 #include <cpl_mask.h>
00040 #include <cpl_matrix.h>
00041 
00042 #include "hawki_mask.h"
00043 
00044 /*----------------------------------------------------------------------------*/
00049 /*----------------------------------------------------------------------------*/
00050 
00067 cpl_error_code hawki_image_copy_to_intersection
00068 (cpl_image        * target,
00069  const cpl_image  * from,
00070  cpl_size           target_shift_x,
00071  cpl_size           target_shift_y)
00072 {
00073     
00074     cpl_size inter_x1;
00075     cpl_size inter_x2;
00076     cpl_size inter_y1;
00077     cpl_size inter_y2;
00078 
00079     cpl_size from_x1 = 0;
00080     cpl_size from_x2 = cpl_image_get_size_x(from);
00081     cpl_size from_y1 = 0;
00082     cpl_size from_y2 = cpl_image_get_size_y(from);
00083     
00084     cpl_size target_x1 = target_shift_x;
00085     cpl_size target_x2 = target_shift_x + cpl_image_get_size_x(target);
00086     cpl_size target_y1 = target_shift_y;
00087     cpl_size target_y2 = target_shift_y + cpl_image_get_size_y(target);
00088     
00089     /* Check entries */
00090     cpl_ensure_code(target       != NULL,      CPL_ERROR_NULL_INPUT);
00091     cpl_ensure_code(from         != NULL,      CPL_ERROR_NULL_INPUT);
00092     cpl_ensure_code(cpl_image_get_type(target) == cpl_image_get_type(from),
00093                     CPL_ERROR_TYPE_MISMATCH);
00094 
00095     /* Compute intersection */
00096     inter_x1 = CX_MAX(from_x1, target_x1);
00097     inter_x2 = CX_MIN(from_x2, target_x2);
00098     inter_y1 = CX_MAX(from_y1, target_y1);
00099     inter_y2 = CX_MIN(from_y2, target_y2);
00100  
00101     if(inter_x2 > inter_x1 && inter_y2 > inter_y1)
00102     {
00103         const void * from_data;
00104         void       * target_data;
00105         int          iy;
00106         size_t       pixel_size = cpl_type_get_sizeof(cpl_image_get_type(from));
00107         cpl_size     from_nx = cpl_image_get_size_x(from);
00108         cpl_size     target_nx = cpl_image_get_size_y(target);
00109         cpl_size     memcopy_size;
00110 
00111         memcopy_size = (inter_x2 - inter_x1) * pixel_size;
00112 
00113         from_data   = cpl_image_get_data_const(from);
00114         target_data = cpl_image_get_data(target);
00115 
00116         for(iy=inter_y1; iy<inter_y2; ++iy)
00117         {
00118             const void * from_p; 
00119             void       * target_p;
00120             
00121             from_p   = from_data   + (inter_x1 + iy * from_nx) * pixel_size;
00122             target_p = target_data +
00123                     (inter_x1 - target_shift_x +
00124                             (iy - target_shift_y) * target_nx) * pixel_size;
00125             memcpy(target_p, from_p, memcopy_size);
00126         }
00127     }
00128     /* If the if is not executed is because intersection is empty. 
00129      * Nothing to copy */
00130     
00131     return CPL_ERROR_NONE;
00132 }
00133