+++ /dev/null
-/* atlc - arbitrary transmission line calculator, for the analysis of
-transmission lines are directional couplers.
-
-Copyright (C) 2002. Dr. David Kirkby, PhD (G8WRB).
-
-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 package_version 2
-of the License, or (at your option) any later package_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 02111-1307,
-USA.
-
-Dr. David Kirkby, e-mail drkirkby at ntlworld.com
-
-*/
-#include "config.h"
-
-#ifdef HAVE_STRING_H
-#include <string.h>
-#endif
-
-#ifdef HAVE_STRINGS_H
-#include <strings.h>
-#endif
-
-#ifdef HAVE_STDLIB_H
-#include <stdlib.h>
-#endif
-#include "definitions.h"
-#include "exit_codes.h"
-
-
-/* names, colours and Ers are all arrays of 10. It would be better they were
-in a structure as they are all linked closely, but they are not and I
-can't be bothered to change it */
-
-extern double dd, WW, HH, xx, yy, Er1;
-extern int d, W, H, x, y;
-extern int lowest;
-extern int highest;
-extern int verbose;
-
-void convert_create_bmp_for_circ_in_rect_dimensions_to_integers(int accuracy_level)
-{
- int best_d=-1, best_W=-1, best_H=-1, best_x=-1, best_y=-1;
- int min, max;
- int i;
- double max_gridsize, min_gridsize;
- double error, error_min=VERY_LARGE, gridsize, best_grid_size=-1;
-
- /* scale grid size, according to a command line option */
- lowest*=1<<accuracy_level;
- highest*=1<<accuracy_level;
-
- max_gridsize=sqrt(WW*HH/(double )lowest); /* minimum dimension in m */
- min_gridsize=sqrt(WW*HH/(double )highest);
- if(W>=H)
- {
- min=WW/max_gridsize;
- max=WW/min_gridsize;
- }
- else
- {
- min=HH/max_gridsize;
- max=HH/min_gridsize;
- }
- for(i=min;i<=max;++i)
- {
- /* Try various combinations for d, W, H, etc */
- if(W>H)
- gridsize=WW/i;
- else
- gridsize=HH/i;
- d=(int)(dd/gridsize + 0.5);
- W=(int)(WW/gridsize + 0.5);
- H=(int)(HH/gridsize + 0.5);
- x=(int)(xx/gridsize + 0.5);
- y=(int)(yy/gridsize + 0.5);
- error=0.0;
- error+=pow((WW-W*gridsize)/WW,2.0); /* relative error in W */
- error+=pow((HH-H*gridsize)/HH,2.0);
- error+=pow((dd-d*gridsize)/dd,2.0);
- if(x>0)
- error+=pow((xx-x*gridsize)/xx,2.0);
- if(y>0)
- error+=pow((yy-y*gridsize)/yy,2.0);
- if(error < (error_min-TINY))
- {
- error_min=error;
- best_d=d;
- best_W=W;
- best_H=H;
- best_x=x;
- best_y=y;
- best_grid_size=gridsize;
- }
- }
- if(best_d==-1) /* it has not been initialised */
- exit_with_msg_and_exit_code("d has not been initialised",VARIABLE_NOT_INITIALISED);
- else
- d=best_d;
- if(best_W==-1) /* it has not been initialised */
- exit_with_msg_and_exit_code("W has not been initialised",VARIABLE_NOT_INITIALISED);
- else
- W=best_W;
- if(best_H==-1) /* it has not been initialised */
- exit_with_msg_and_exit_code("H has not been initialised",VARIABLE_NOT_INITIALISED);
- else
- H=best_H;
- if(best_x==-1) /* it has not been initialised */
- exit_with_msg_and_exit_code("x has not been initialised",VARIABLE_NOT_INITIALISED);
- else
- x=best_x;
- if(best_y==-1) /* it has not been initialised */
- exit_with_msg_and_exit_code("y has not been initialised",VARIABLE_NOT_INITIALISED);
- else
- y=best_y;
- if(verbose==TRUE)
- {
- fprintf(stderr,"error_min=%.16f\n",error_min);
- fprintf(stderr,"User requested: dd=%f WW=%f HH=%f xx=%f yy=%f Er=%f\n\n",dd,WW,HH,xx,yy,Er1);
- fprintf(stderr,"Internally the program is using the following grid:\n");
- fprintf(stderr,"d=%d W=%d H=%d x=%d y=%d \n", d, W, H, x, y);
- fprintf(stderr,"The grid size is %f mm, inches or whatever\n\n", best_grid_size);
- if(error_min > TINY)
- {
- fprintf(stderr,"This means we are simulating a transmission line with these dimensions:\n");
- fprintf(stderr,"d=%f W=%f H=%f x=%f y=%f (mm, inches or whatever)\n",d*best_grid_size,W*best_grid_size,H*best_grid_size,x*best_grid_size,y*best_grid_size);
- fprintf(stderr,"\nThese are slightly different to what you indicated on the command line,\n");
- fprintf(stderr,"but they are the best approximation possible, given the grid size\n");
- }
- }
- if( (d/2+x >= W) || (d/2+y >=H))
- {
- exit_with_msg_and_exit_code("The gap between the two conductors is too small. Either increase the bitmap size (-b option), or change the dimensions of one the conductors",GAP_BETWEEN_CONDUCTORS_TOO_SMALL);
- }
- check_error(dd,d,best_grid_size,"d");
- check_error(WW,W,best_grid_size,"W");
- check_error(HH,H,best_grid_size,"H");
- check_error(xx,x,best_grid_size,"x");
- check_error(yy,y,best_grid_size,"y");
-}
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