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"
 
#define dprintf \
    if (DEBUG)  \
    printf
 
#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;
}