example4.c

/*------------------------------------------------------------------------------
       Filename: example4.c
       
       Description: Loads example4-input.gbx, searches through the file and
              removes any entities with a width less than 60mils, and re-exports
              the modified image to a new RS274X file.

       Instructions: Make sure you are in the example-code directory, and compile
              this program with the following command:

       gcc -Wall -g `pkg-config --cflags gtk+-2.0 glib-2.0 libgerbv` `pkg-config \
--libs gtk+-2.0 glib-2.0 libgerbv` example4.c -o example4

       Run with the following command:
       
       ./example4

------------------------------------------------------------------------------*/

#include "gerbv.h"

int
main(int argc, char *argv[]) {
       gerbv_image_t *workingImage;
       gerbv_net_t *currentNet;

       /* parse and create the image */
       workingImage = gerbv_create_rs274x_image_from_filename ("example4-input.gbx");
       
       /* make sure we parsed the file */
       if (workingImage == NULL)
              g_error ("There was an error parsing the file.");
              
       /* run through all the nets in the layer */
       for (currentNet = workingImage->netlist; currentNet; currentNet = currentNet->next){       
              /* check if the net aperture is a circle and has diameter < 0.060 inches */
              if ((currentNet->aperture_state != GERBV_APERTURE_STATE_OFF) &&
                            (workingImage->aperture[currentNet->aperture] != NULL) &&
                            (workingImage->aperture[currentNet->aperture]->type == GERBV_APTYPE_CIRCLE) &&
                            (workingImage->aperture[currentNet->aperture]->parameter[0] < 0.060)){
                     /* we found a path which meets the criteria, so delete the net for
                        demostration purposes */
                     gerbv_image_delete_net (currentNet);
              }
       }

       /* export the modified image to a new rs274x file */
       gerbv_export_rs274x_file_from_image ("example4-output.gbx", workingImage);

       /* destroy all created structures */
       gerbv_destroy_image (workingImage);
       return 0;
}