Added missing dgeo.c and dgeo.h files.

src/dgeo.c

+/**
+* @file         dgeo.c
+* @brief        Manage differential geometry maps (to correct pixel positions)
+* @date         12/02/2015
+* @copyright
+*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+*
+*       This file part of:      SExtractor
+*
+*       Copyright:              (C) 1993-2015 IAP/CNRS/UPMC
+*
+*       License:                GNU General Public License
+*
+*       SExtractor is free software: you can redistribute it and/or modify
+*       it under the terms of the GNU General Public License as published by
+*       the Free Software Foundation, either version 3 of the License, or
+*       (at your option) any later version.
+*       SExtractor is distributed in the hope that it will be useful,
+*       but WITHOUT ANY WARRANTY; without even the implied warranty of
+*       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*       GNU General Public License for more details.
+*       You should have received a copy of the GNU General Public License
+*       along with SExtractor. If not, see <http://www.gnu.org/licenses/>.
+*
+*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
+
+#ifdef HAVE_CONFIG_H
+#include        "config.h"
+#endif
+
+#include	<math.h>
+#include	<stdio.h>
+#include	<stdlib.h>
+#include	<string.h>
+
+#include	"define.h"
+#include	"globals.h"
+#include	"dgeo.h"
+#include	"field.h"
+
+/****** dgeo_copy ************************************************************
+PROTO	int dgeo_copy(picstruct *dgeofield, PIXTYPE *destx, PIXTYPE *desty,
+		int w,int h, int ix,int iy)
+PURPOSE	Copy a small part of the differential geometry map components to output
+	rasters.
+INPUT	Pointer to the dgeofield structure,
+	Pointer to the output x map component,
+	Pointer to the output y map component,
+	width in pixels,
+	height in pixels,
+	offset in x,
+	offset in y.
+OUTPUT	RETURN_OK if successful, RETURN_ERROR otherwise.
+NOTES	-.
+AUTHOR	E. Bertin (IAP)
+VERSION	02/12/2015
+ ***/
+int	dgeo_copy(picstruct *dgeofield, PIXTYPE *destx, PIXTYPE *desty,
+		int w,int h, int ix,int iy)
+  {
+   int		i,y, xmin,xmax,ymin,ymax,w2;
+
+/* First set the output to 0 */
+  if (destx)
+    memset(destx, 0, w*h*sizeof(PIXTYPE));
+  if (desty)
+    memset(desty, 0, w*h*sizeof(PIXTYPE));
+
+/* Don't go further if out of frame!! */
+  if (!dgeofield || ix<0 || ix>=dgeofield->width
+	|| iy<dgeofield->ymin || iy>=dgeofield->ymax)
+    return RETURN_ERROR;
+
+/* Set the image boundaries */
+  w2 = w;
+  ymin = iy-h/2;
+  ymax = ymin + h;
+  if (ymin<dgeofield->ymin)
+    {
+    if (destx)
+      destx += (dgeofield->ymin-ymin)*w;
+    if (desty)
+      desty += (dgeofield->ymin-ymin)*w;
+    ymin = dgeofield->ymin;
+    }
+  if (ymax>dgeofield->ymax)
+    ymax = dgeofield->ymax;
+
+  xmin = ix-w/2;
+  xmax = xmin + w;
+  if (xmax>dgeofield->width)
+    {
+    w2 -= xmax-dgeofield->width;
+    xmax = dgeofield->width;
+    }
+  if (xmin<0)
+    {
+    if (destx)
+      destx += -xmin;
+    if (desty)
+      desty += -xmin;
+    w2 -= -xmin;
+    xmin = 0;
+    }
+
+/* Copy the right pixels to the destination */
+  if (destx)
+    for (y=ymin; y<ymax; y++, destx += w)
+      memcpy(destx, &DGEOPIXX(dgeofield, xmin, y), w2*sizeof(PIXTYPE));
+  if (desty)
+    for (y=ymin; y<ymax; y++, desty += w)
+      memcpy(desty, &DGEOPIXY(dgeofield, xmin, y), w2*sizeof(PIXTYPE));
+
+  return RETURN_OK;
+  }
+
+ 
+

src/dgeo.h

+/**
+* @file         dgeo.h
+* @brief        Include file for dgeo.c.
+* @date         02/12/2015
+* @copyright
+*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+*
+*       This file part of:      SExtractor
+*
+*       Copyright:              (C) 2011-2015 Emmanuel Bertin -- IAP/CNRS/UPMC
+*
+*       License:                GNU General Public License
+*
+*       SExtractor is free software: you can redistribute it and/or modify
+*       it under the terms of the GNU General Public License as published by
+*       the Free Software Foundation, either version 3 of the License, or
+*       (at your option) any later version.
+*       SExtractor is distributed in the hope that it will be useful,
+*       but WITHOUT ANY WARRANTY; without even the implied warranty of
+*       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*       GNU General Public License for more details.
+*       You should have received a copy of the GNU General Public License
+*       along with SExtractor. If not, see <http://www.gnu.org/licenses/>.
+*
+*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
+
+#ifndef _DGEO_H_
+#define _DGEO_H_
+
+//----------------------------- Internal constants ----------------------------
+//------------------------------- functions -----------------------------------
+extern int	dgeo_copy(picstruct *dgeofield, PIXTYPE *destx, PIXTYPE *desty,
+		int w,int h, int ix,int iy);
+
+#endif