export-drill.c

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/*
 * gEDA - GNU Electronic Design Automation
 * This file is a part of gerbv.
 *
 *   Copyright (C) 2008 Julian Lamb
 *
 * $Id$
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA
 */
 
#include "gerbv.h"
 
#include <math.h>
#include <glib/gstdio.h>
 
#include "common.h"
 
#undef DPRINTF
#define DPRINTF(...) do { if (DEBUG) printf(__VA_ARGS__); } while (0)
 
#define round(x) floor(x+0.5)
 
gboolean
gerbv_export_drill_file_from_image (const gchar *filename, gerbv_image_t *inputImage,
              gerbv_user_transformation_t *transform) {
       FILE *fd;
       GArray *apertureTable = g_array_new(FALSE, FALSE, sizeof(int));
       gerbv_net_t *net;
       
       /* force gerbv to output decimals as dots (not commas for other locales) */
       setlocale(LC_NUMERIC, "C");
       
       if ((fd = g_fopen(filename, "w")) == NULL) {
              GERB_COMPILE_ERROR( _("Can't open file for writing: %s"),
                            filename);
              return FALSE;
       }
       
       /* duplicate the image, cleaning it in the process */
       gerbv_image_t *image = gerbv_image_duplicate_image (inputImage, transform);
       
       /* write header info */
       fprintf(fd, "M48\n");
       fprintf(fd, "INCH,TZ\n");
 
       /* define all apertures */
       gerbv_aperture_t *aperture;
 
       /* the image should already have been cleaned by a duplicate_image call, so we can safely
          assume the aperture range is correct */
       for (int i = APERTURE_MIN; i < APERTURE_MAX; i++) {
              aperture = image->aperture[i];
              
              if (!aperture)
                     continue;
 
              switch (aperture->type) {
              case GERBV_APTYPE_CIRCLE:
                     fprintf(fd, "T%dC%1.3f\n", i, aperture->parameter[0]);
                     /* add the "approved" aperture to our valid list */
                     g_array_append_val(apertureTable, i);
                     break;
              default:
                     break;
              }
       }
       
       fprintf(fd, "%%\n");
       /* write rest of image */
       
       for (guint i = 0; i < apertureTable->len; i++) {
              int aperture_idx = g_array_index(apertureTable, int, i);
              
              /* write tool change */
              fprintf(fd, "T%d\n", aperture_idx);
              
              /* run through all nets and look for drills using this aperture */
              for (net = image->netlist; net; net = net->next) {
                     if (net->aperture != aperture_idx)
                            continue;
 
                     switch (net->aperture_state) {
                     case GERBV_APERTURE_STATE_FLASH:
                            fprintf(fd, "X%06ldY%06ld\n",
                                   (long)round(net->stop_x * 10000.0),
                                   (long)round(net->stop_y * 10000.0));
                            break;
                     case GERBV_APERTURE_STATE_ON:      /* Cut slot */
                            fprintf(fd, "X%06ldY%06ldG85X%06ldY%06ld\n",
                                   (long)round(net->start_x * 10000.0),
                                   (long)round(net->start_y * 10000.0),
                                   (long)round(net->stop_x * 10000.0),
                                   (long)round(net->stop_y * 10000.0));
                            break;
                     default:
                            break;
                     }
              }
       }
       g_array_free (apertureTable, TRUE);
 
       /* write footer */
       fprintf(fd, "M30\n\n");
       gerbv_destroy_image(image);
       fclose(fd);
       
       /* return to the default locale */
       setlocale(LC_NUMERIC, "");
       return TRUE;
}