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   1 /*
   2  * Copyright © 2012 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 namespace Footprint {
  19
  20         /* process clearance requirement */
  21         public real process_clearance = 0.6;
  22
  23         public int mm2mils100(real mm) = floor (mm / 25.4 * 1000 * 100 + 0.5);
  24
  25         public real mils1002mm(real mils100) = mils100 * 25.4 / 100 / 1000;
  26
  27         public int line_thickness = 1000;
  28
  29         public void element_start(string name) {
  30                 printf ("# author: Keith Packard\n");
  31                 printf ("# email: keithp@keithp.com\n");
  32                 printf ("# dist-license: GPL 2\n");
  33                 printf ("# use-license: unlimited\n");
  34                 printf ("Element [\"\" \"%s\" \"\" \"\" 0 0 0 0 0 100 \"\"]\n",
  35                         name);
  36                 printf ("(\n");
  37
  38         }
  39
  40         public void element_end() {
  41                 printf (")\n");
  42         }
  43
  44         public void pad_mm_clear_mask_options(real center_x,
  45                                               real center_y,
  46                                               real width,
  47                                               real height,
  48                                               real clearance,
  49                                               real mask,
  50                                               string name,
  51                                               string num,
  52                                               string options)
  53         {
  54                 real    x1 = 0;
  55                 real    y1 = 0;
  56                 real    x2 = 0;
  57                 real    y2 = 0;
  58                 real    thickness = 0;
  59
  60                 if (width > height) {
  61                         thickness = height;
  62                         y1 = center_y;
  63                         x1 = center_x - (width - height) / 2;
  64                         y2 = center_y;
  65                         x2 = center_x + (width - height) / 2;
  66                 } else {
  67                         thickness = width;
  68                         x1 = center_x;
  69                         y1 = center_y - (height - width) / 2;
  70                         x2 = center_x;
  71                         y2 = center_y + (height - width) / 2;
  72                 }
  73
  74
  75                 printf ("    Pad[");
  76                 printf (" %6d %6d %6d %6d",
  77                         mm2mils100(x1),
  78                         mm2mils100(y1),
  79                         mm2mils100(x2),
  80                         mm2mils100(y2));
  81                 printf (" %6d %6d %6d",
  82                         mm2mils100(thickness),
  83                         mm2mils100(clearance),
  84                         mm2mils100(mask));
  85                 printf (" \"%s\" \"%s\" \"%s\"]\n",
  86                         name, num, options);
  87         }
  88
  89         public void pad_mm_clear_options(real center_x,
  90                                          real center_y,
  91                                          real width,
  92                                          real height,
  93                                          real clearance,
  94                                          string name,
  95                                          string num,
  96                                          string options)
  97         {
  98                 real    x1 = 0;
  99                 real    y1 = 0;
 100                 real    x2 = 0;
 101                 real    y2 = 0;
 102                 real    thickness = 0;
 103
 104                 if (width > height) {
 105                         thickness = height;
 106                         y1 = center_y;
 107                         x1 = center_x - (width - height) / 2;
 108                         y2 = center_y;
 109                         x2 = center_x + (width - height) / 2;
 110                 } else {
 111                         thickness = width;
 112                         x1 = center_x;
 113                         y1 = center_y - (height - width) / 2;
 114                         x2 = center_x;
 115                         y2 = center_y + (height - width) / 2;
 116                 }
 117
 118                 real mask = thickness + clearance / 2;
 119
 120                 printf ("    Pad[");
 121                 printf (" %6d %6d %6d %6d",
 122                         mm2mils100(x1),
 123                         mm2mils100(y1),
 124                         mm2mils100(x2),
 125                         mm2mils100(y2));
 126                 printf (" %6d %6d %6d",
 127                         mm2mils100(thickness),
 128                         mm2mils100(clearance),
 129                         mm2mils100(mask));
 130                 printf (" \"%s\" \"%s\" \"%s\"]\n",
 131                         name, num, options);
 132         }
 133
 134         public void pad_mm_clear(real center_x,
 135                                  real center_y,
 136                                  real width,
 137                                  real height,
 138                                  real clearance,
 139                                  string name,
 140                                  string num)
 141         {
 142                 pad_mm_clear_options(center_x,
 143                                      center_y,
 144                                      width,
 145                                      height,
 146                                      clearance,
 147                                      name,
 148                                      num,
 149                                      "square");
 150         }
 151
 152         public void pad_mm(real center_x,
 153                            real center_y,
 154                            real width,
 155                            real height,
 156                            string name,
 157                            string num)
 158         {
 159                 pad_mm_clear(center_x,
 160                              center_y,
 161                              width,
 162                              height,
 163                              process_clearance,
 164                              name,
 165                              num);
 166         }
 167
 168 public void pad_mm_arbitrary(   real x1,
 169                                 real y1,
 170                                 real x2,
 171                                 real y2,
 172                                 real thickness,
 173                                 string name,
 174                                 string num,
 175                                 string options)
 176 {
 177         real clearance = process_clearance;
 178
 179         real mask = thickness + clearance / 2;
 180
 181         printf ("    Pad[");
 182                 printf (" %6d %6d %6d %6d",
 183                         mm2mils100(x1),
 184                         mm2mils100(y1),
 185                         mm2mils100(x2),
 186                         mm2mils100(y2));
 187                 printf (" %6d %6d %6d",
 188                         mm2mils100(thickness),
 189                         mm2mils100(clearance),
 190                         mm2mils100(mask));
 191                 printf (" \"%s\" \"%s\" \"%s\"]\n",
 192                         name, num, options);
 193 }
 194
 195         public void pin_mm_clear(real x, real y, real drill, real copper, real clearance,
 196                         string name,
 197                         string number)
 198         {
 199                 real thickness = drill + copper * 2;
 200                 real mask = thickness + clearance / 2;
 201                 printf("    Pin[");
 202                 printf(" %6d %6d",
 203                        mm2mils100(x),
 204                        mm2mils100(y));
 205                 printf(" %6d %6d %6d %6d",
 206                        mm2mils100(thickness),
 207                        mm2mils100(clearance),
 208                        mm2mils100(mask),
 209                        mm2mils100(drill));
 210                 printf (" \"%s\" \"%s\"",
 211                         name, number);
 212                 printf (" \"\"]\n");
 213
 214         }
 215
 216         public void pin_mm_clear_options(real x, real y, real drill, real copper, real clearance,
 217                                          string name,
 218                                          string number,
 219                                          string options)
 220         {
 221                 real thickness = drill + copper * 2;
 222                 real mask = thickness + clearance / 2;
 223                 printf("    Pin[");
 224                 printf(" %6d %6d",
 225                        mm2mils100(x),
 226                        mm2mils100(y));
 227                 printf(" %6d %6d %6d %6d",
 228                        mm2mils100(thickness),
 229                        mm2mils100(clearance),
 230                        mm2mils100(mask),
 231                        mm2mils100(drill));
 232                 printf (" \"%s\" \"%s\"",
 233                         name, number);
 234                 printf (" \"%s\"]\n", options);
 235
 236         }
 237
 238         public void pin_mm_clear_mask_options(real x, real y,
 239                                               real drill, real copper, real clearance, real mask,
 240                                               string name, string number, string options)
 241         {
 242                 real thickness = drill + copper * 2;
 243                 printf("    Pin[");
 244                 printf(" %6d %6d",
 245                        mm2mils100(x),
 246                        mm2mils100(y));
 247                 printf(" %6d %6d %6d %6d",
 248                        mm2mils100(thickness),
 249                        mm2mils100(clearance),
 250                        mm2mils100(mask),
 251                        mm2mils100(drill));
 252                 printf (" \"%s\" \"%s\"",
 253                         name, number);
 254                 printf (" \"%s\"]\n", options);
 255
 256         }
 257         public void pin_mm_clear_mask(real x, real y,
 258                                       real drill, real copper, real clearance, real mask,
 259                                       string name, string number)
 260         {
 261                 real thickness = copper;
 262                 printf("    Pin[");
 263                 printf(" %6d %6d",
 264                        mm2mils100(x),
 265                        mm2mils100(y));
 266                 printf(" %6d %6d %6d %6d",
 267                        mm2mils100(thickness),
 268                        mm2mils100(clearance),
 269                        mm2mils100(mask),
 270                        mm2mils100(drill));
 271                 printf (" \"%s\" \"%s\"",
 272                         name, number);
 273                 printf (" \"\"]\n");
 274
 275         }
 276
 277         public void pin_mm(real x, real y, real drill, real copper,
 278                         string name,
 279                         string number)
 280         {
 281                 pin_mm_clear(x, y, drill, copper, process_clearance,
 282                              name, number);
 283         }
 284
 285         public void pin_mm_options(real x, real y, real drill, real copper,
 286                                    string name,
 287                                    string number,
 288                                    string options)
 289         {
 290                 pin_mm_clear_options(x, y, drill, copper, process_clearance,
 291                                      name, number, options);
 292         }
 293
 294         public void line (real x1, real y1, real x2, real y2)
 295         {
 296                 printf ("    ElementLine[");
 297                 printf (" %6d %6d %6d %6d",
 298                         mm2mils100(x1),
 299                         mm2mils100(y1),
 300                         mm2mils100(x2),
 301                         mm2mils100(y2));
 302                 printf (" %d]\n", line_thickness);
 303         }
 304
 305         public void rect (real x, real y, real w, real h)
 306         {
 307                 line(x,y,x+w,y);
 308                 line(x+w,y,x+w,y+h);
 309                 line(x+w,y+h,x,y+h);
 310                 line(x,y+h,x,y);
 311         }
 312
 313         public void arc (real center_x, real center_y,
 314                          real radius_x, real radius_y,
 315                          real start_angle, real delta_angle)
 316         {
 317                 printf ("    ElementArc[ %6d %6d %6d %6d %3d %3d %d]\n",
 318                         mm2mils100(center_x), mm2mils100(center_y),
 319                         mm2mils100(radius_x), mm2mils100(radius_y),
 320                         start_angle, delta_angle, line_thickness);
 321         }
 322 }