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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         public void pad_mm_options(real center_x,
 168                                    real center_y,
 169                                    real width,
 170                                    real height,
 171                                    string name,
 172                                    string num,
 173                                    string options)
 174         {
 175                 pad_mm_clear_options(center_x,
 176                                      center_y,
 177                                      width,
 178                                      height,
 179                                      process_clearance,
 180                                      name,
 181                                      num,
 182                                      options);
 183         }
 184
 185         public void pad_mm_arbitrary(   real x1,
 186                                         real y1,
 187                                         real x2,
 188                                         real y2,
 189                                         real thickness,
 190                                         string name,
 191                                         string num,
 192                                         string options)
 193         {
 194                 real clearance = process_clearance;
 195
 196                 real mask = thickness + clearance / 2;
 197
 198                 printf ("    Pad[");
 199                 printf (" %6d %6d %6d %6d",
 200                         mm2mils100(x1),
 201                         mm2mils100(y1),
 202                         mm2mils100(x2),
 203                         mm2mils100(y2));
 204                 printf (" %6d %6d %6d",
 205                         mm2mils100(thickness),
 206                         mm2mils100(clearance),
 207                         mm2mils100(mask));
 208                 printf (" \"%s\" \"%s\" \"%s\"]\n",
 209                         name, num, options);
 210         }
 211
 212         public void pin_mm_clear(real x, real y, real drill, real copper, real clearance,
 213                         string name,
 214                         string number)
 215         {
 216                 real thickness = drill + copper * 2;
 217                 real mask = thickness + clearance / 2;
 218                 printf("    Pin[");
 219                 printf(" %6d %6d",
 220                        mm2mils100(x),
 221                        mm2mils100(y));
 222                 printf(" %6d %6d %6d %6d",
 223                        mm2mils100(thickness),
 224                        mm2mils100(clearance),
 225                        mm2mils100(mask),
 226                        mm2mils100(drill));
 227                 printf (" \"%s\" \"%s\"",
 228                         name, number);
 229                 printf (" \"\"]\n");
 230
 231         }
 232
 233         public void pin_mm_clear_options(real x, real y, real drill, real copper, real clearance,
 234                                          string name,
 235                                          string number,
 236                                          string options)
 237         {
 238                 real thickness = drill + copper * 2;
 239                 real mask = thickness + clearance / 2;
 240                 printf("    Pin[");
 241                 printf(" %6d %6d",
 242                        mm2mils100(x),
 243                        mm2mils100(y));
 244                 printf(" %6d %6d %6d %6d",
 245                        mm2mils100(thickness),
 246                        mm2mils100(clearance),
 247                        mm2mils100(mask),
 248                        mm2mils100(drill));
 249                 printf (" \"%s\" \"%s\"",
 250                         name, number);
 251                 printf (" \"%s\"]\n", options);
 252
 253         }
 254
 255         public void pin_mm_clear_mask_options(real x, real y,
 256                                               real drill, real copper, real clearance, real mask,
 257                                               string name, string number, string options)
 258         {
 259                 real thickness = drill + copper * 2;
 260                 printf("    Pin[");
 261                 printf(" %6d %6d",
 262                        mm2mils100(x),
 263                        mm2mils100(y));
 264                 printf(" %6d %6d %6d %6d",
 265                        mm2mils100(thickness),
 266                        mm2mils100(clearance),
 267                        mm2mils100(mask),
 268                        mm2mils100(drill));
 269                 printf (" \"%s\" \"%s\"",
 270                         name, number);
 271                 printf (" \"%s\"]\n", options);
 272
 273         }
 274         public void pin_mm_clear_mask(real x, real y,
 275                                       real drill, real copper, real clearance, real mask,
 276                                       string name, string number)
 277         {
 278                 real thickness = copper;
 279                 printf("    Pin[");
 280                 printf(" %6d %6d",
 281                        mm2mils100(x),
 282                        mm2mils100(y));
 283                 printf(" %6d %6d %6d %6d",
 284                        mm2mils100(thickness),
 285                        mm2mils100(clearance),
 286                        mm2mils100(mask),
 287                        mm2mils100(drill));
 288                 printf (" \"%s\" \"%s\"",
 289                         name, number);
 290                 printf (" \"\"]\n");
 291
 292         }
 293
 294         public void pin_mm(real x, real y, real drill, real copper,
 295                         string name,
 296                         string number)
 297         {
 298                 pin_mm_clear(x, y, drill, copper, process_clearance,
 299                              name, number);
 300         }
 301
 302         public void pin_mm_options(real x, real y, real drill, real copper,
 303                                    string name,
 304                                    string number,
 305                                    string options)
 306         {
 307                 pin_mm_clear_options(x, y, drill, copper, process_clearance,
 308                                      name, number, options);
 309         }
 310
 311         public void line (real x1, real y1, real x2, real y2)
 312         {
 313                 printf ("    ElementLine[");
 314                 printf (" %6d %6d %6d %6d",
 315                         mm2mils100(x1),
 316                         mm2mils100(y1),
 317                         mm2mils100(x2),
 318                         mm2mils100(y2));
 319                 printf (" %d]\n", line_thickness);
 320         }
 321
 322         public void rect (real x, real y, real w, real h)
 323         {
 324                 line(x,y,x+w,y);
 325                 line(x+w,y,x+w,y+h);
 326                 line(x+w,y+h,x,y+h);
 327                 line(x,y+h,x,y);
 328         }
 329
 330         public void arc (real center_x, real center_y,
 331                          real radius_x, real radius_y,
 332                          real start_angle, real delta_angle)
 333         {
 334                 printf ("    ElementArc[ %6d %6d %6d %6d %3d %3d %d]\n",
 335                         mm2mils100(center_x), mm2mils100(center_y),
 336                         mm2mils100(radius_x), mm2mils100(radius_y),
 337                         start_angle, delta_angle, line_thickness);
 338         }
 339 }