tools/ImgToMap/src/imgtomap/MapWriter.java

   1 /*
   2  * To change this template, choose Tools | Templates
   3  * and open the template in the editor.
   4  */
   5 package imgtomap;
   6
   7 import java.awt.image.BufferedImage;
   8 import java.awt.image.Raster;
   9 import java.io.File;
  10 import java.io.FileNotFoundException;
  11 import java.io.FileOutputStream;
  12 import java.io.IOException;
  13 import java.io.PrintWriter;
  14 import java.util.LinkedList;
  15 import java.util.List;
  16 import java.util.logging.Level;
  17 import java.util.logging.Logger;
  18 import javax.imageio.ImageIO;
  19
  20 /**
  21  *
  22  * @author maik
  23  */
  24 public class MapWriter {
  25
  26     public int writeMap(Parameters p) {
  27         if (!(new File(p.infile).exists())) {
  28             return 1;
  29         }
  30
  31         double[][] height = getHeightmap(p.infile);
  32         double[][] columns = getColumns(height);
  33         double units = 1d * p.pixelsize;
  34         double max = p.height;
  35
  36         PrintWriter pw = null;
  37         try {
  38             pw = new PrintWriter(new FileOutputStream(new File(p.outfile)));
  39         } catch (FileNotFoundException ex) {
  40             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
  41             return 1;
  42         }
  43
  44         // worldspawn start
  45         pw.print("{\n\"classname\" \"worldspawn\"\n");
  46
  47         double xmax = (columns.length - 1) * units;
  48         double ymax = (columns[0].length - 1) * units;
  49
  50         if (p.skyfill) {
  51             List<Block> fillers = genSkyFillers(columns);
  52             for (Block b : fillers) {
  53                 double x = b.x * units;
  54                 double y = (b.y + b.ydim) * units;
  55                 x = x > xmax ? xmax : x;
  56                 y = y > ymax ? ymax : y;
  57                 Vector3D p1 = new Vector3D(x, -y, -32.0);
  58
  59                 x = (b.x + b.xdim) * units;
  60                 y = b.y * units;
  61                 x = x > xmax ? xmax : x;
  62                 y = y > ymax ? ymax : y;
  63                 Vector3D p2 = new Vector3D(x, -y, p.skyheight);
  64
  65                 writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
  66             }
  67         }
  68
  69         if (p.sky) {
  70             // generate skybox
  71             int x = height.length - 1;
  72             int y = height[0].length - 1;
  73
  74             // top
  75             Vector3D p1 = new Vector3D(0, -y * units, p.skyheight);
  76             Vector3D p2 = new Vector3D(x * units, 0, p.skyheight + 32.0);
  77             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
  78
  79             // bottom
  80             p1 = new Vector3D(0, -y * units, -64.0);
  81             p2 = new Vector3D(x * units, 0, -32.0);
  82             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
  83
  84             // north
  85             p1 = new Vector3D(0, 0, -32.0);
  86             p2 = new Vector3D(x * units, 32, p.skyheight);
  87             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
  88
  89             // east
  90             p1 = new Vector3D(x * units, -y * units, -32.0);
  91             p2 = new Vector3D(x * units + 32.0, 0, p.skyheight);
  92             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
  93
  94             // south
  95             p1 = new Vector3D(0, -y * units - 32, -32.0);
  96             p2 = new Vector3D(x * units, -y * units, p.skyheight);
  97             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
  98
  99
 100             // west
 101             p1 = new Vector3D(0 - 32.0, -y * units, -32.0);
 102             p2 = new Vector3D(0, 0, p.skyheight);
 103             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 104
 105         }
 106
 107         // genBlockers screws the columns array!
 108         // this should be the last step!
 109         if (p.visblockers) {
 110             List<Block> blockers = genBlockers(columns, 0.15);
 111             for (Block b : blockers) {
 112                 double z = b.minheight * p.height - 1;
 113                 z = Math.floor(z / 16);
 114                 z = z * 16;
 115
 116                 if (z > 0) {
 117                     double x = b.x * units;
 118                     double y = (b.y + b.ydim) * units;
 119                     x = x > xmax ? xmax : x;
 120                     y = y > ymax ? ymax : y;
 121                     Vector3D p1 = new Vector3D(x, -y, -32.0);
 122
 123                     x = (b.x + b.xdim) * units;
 124                     y = b.y * units;
 125                     x = x > xmax ? xmax : x;
 126                     y = y > ymax ? ymax : y;
 127                     Vector3D p2 = new Vector3D(x, -y, z);
 128
 129                     writeBoxBrush(pw, p1, p2, false, "common/caulk", 1.0);
 130                 }
 131
 132             }
 133         }
 134
 135         // worldspawn end
 136         pw.print("}\n");
 137
 138         // func_group start
 139         pw.print("{\n\"classname\" \"func_group\"\n");
 140         pw.print("\n\"terrain\" \"1\"\n");
 141         // wander through grid
 142         for (int x = 0; x < height.length - 1; ++x) {
 143             for (int y = 0; y < height[0].length - 1; ++y) {
 144
 145                 boolean skip = getMinMaxForRegion(height, x, y, 2)[0] < 0;
 146
 147                 if (!skip) {
 148
 149                     /*
 150                      *
 151                      *      a +-------+ b
 152                      *       /       /|
 153                      *      /       / |
 154                      *     /       /  |
 155                      *  c +-------+ d + f   (e occluded, unused)
 156                      *    |       |  /
 157                      *    |       | /
 158                      *    |       |/
 159                      *  g +-------+ h
 160                      *
 161                      */
 162
 163
 164                     // delta a - d
 165                     double grad1 = Math.abs(height[x][y] - height[x + 1][y + 1]);
 166
 167                     /// delta b - c
 168                     double grad2 = Math.abs(height[x + 1][y] - height[x][y + 1]);
 169
 170                     Vector3D a = new Vector3D(x * units, -y * units, Math.floor(height[x][y] * max));
 171                     Vector3D b = new Vector3D((x + 1) * units, -y * units, Math.floor(height[x + 1][y] * max));
 172                     Vector3D c = new Vector3D(x * units, -(y + 1) * units, Math.floor(height[x][y + 1] * max));
 173                     Vector3D d = new Vector3D((x + 1) * units, -(y + 1) * units, Math.floor(height[x + 1][y + 1] * max));
 174                     //Vector3D e = new Vector3D(x * units, -y * units, -16.0);
 175                     Vector3D f = new Vector3D((x + 1) * units, -y * units, -16.0);
 176                     Vector3D g = new Vector3D(x * units, -(y + 1) * units, -16.0);
 177                     Vector3D h = new Vector3D((x + 1) * units, -(y + 1) * units, -16.0);
 178
 179                     if (grad1 > grad2) {
 180                         pw.print("{\n");
 181                         pw.print(getMapPlaneString(a, b, c, p.detail, p.texture, p.texturescale));
 182                         pw.print(getMapPlaneString(f, b, a, p.detail, "common/caulk", p.texturescale));
 183                         pw.print(getMapPlaneString(a, c, g, p.detail, "common/caulk", p.texturescale));
 184                         pw.print(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
 185                         pw.print(getMapPlaneString(g, c, b, p.detail, "common/caulk", p.texturescale));
 186                         pw.print("}\n");
 187
 188
 189                         pw.print("{\n");
 190                         pw.print(getMapPlaneString(b, d, c, p.detail, p.texture, p.texturescale));
 191                         pw.print(getMapPlaneString(d, h, g, p.detail, "common/caulk", p.texturescale));
 192                         pw.print(getMapPlaneString(d, b, f, p.detail, "common/caulk", p.texturescale));
 193                         pw.print(getMapPlaneString(f, b, c, p.detail, "common/caulk", p.texturescale));
 194                         pw.print(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
 195                         pw.print("}\n");
 196
 197                     } else {
 198
 199                         pw.print("{\n");
 200                         pw.print(getMapPlaneString(a, b, d, p.detail, p.texture, p.texturescale));
 201                         pw.print(getMapPlaneString(d, b, f, p.detail, "common/caulk", p.texturescale));
 202                         pw.print(getMapPlaneString(f, b, a, p.detail, "common/caulk", p.texturescale));
 203                         pw.print(getMapPlaneString(a, d, h, p.detail, "common/caulk", p.texturescale));
 204                         pw.print(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
 205                         pw.print("}\n");
 206
 207
 208                         pw.print("{\n");
 209                         pw.print(getMapPlaneString(d, c, a, p.detail, p.texture, p.texturescale));
 210                         pw.print(getMapPlaneString(g, c, d, p.detail, "common/caulk", p.texturescale));
 211                         pw.print(getMapPlaneString(c, g, a, p.detail, "common/caulk", p.texturescale));
 212                         pw.print(getMapPlaneString(h, d, a, p.detail, "common/caulk", p.texturescale));
 213                         pw.print(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
 214                         pw.print("}\n");
 215                     }
 216                 }
 217             }
 218         }
 219         // func_group end
 220         pw.print("}\n");
 221
 222         pw.close();
 223         return 0;
 224     }
 225
 226     private void writeBoxBrush(PrintWriter pw, Vector3D p1, Vector3D p2, boolean detail, String texture, double scale) {
 227         Vector3D a = new Vector3D(p1.x, p2.y, p2.z);
 228         Vector3D b = p2;
 229         Vector3D c = new Vector3D(p1.x, p1.y, p2.z);
 230         Vector3D d = new Vector3D(p2.x, p1.y, p2.z);
 231         //Vector3D e unused
 232         Vector3D f = new Vector3D(p2.x, p2.y, p1.z);
 233         Vector3D g = p1;
 234         Vector3D h = new Vector3D(p2.x, p1.y, p1.z);
 235
 236         pw.print("{\n");
 237         pw.print(getMapPlaneString(a, b, d, detail, texture, scale));
 238         pw.print(getMapPlaneString(d, b, f, detail, texture, scale));
 239         pw.print(getMapPlaneString(c, d, h, detail, texture, scale));
 240         pw.print(getMapPlaneString(a, c, g, detail, texture, scale));
 241         pw.print(getMapPlaneString(f, b, a, detail, texture, scale));
 242         pw.print(getMapPlaneString(g, h, f, detail, texture, scale));
 243         pw.print("}\n");
 244
 245     }
 246
 247     private String getMapPlaneString(Vector3D p1, Vector3D p2, Vector3D p3, boolean detail, String material, double scale) {
 248         int flag;
 249         if (detail) {
 250             flag = 134217728;
 251         } else {
 252             flag = 0;
 253         }
 254         return "( " + p1.x + " " + p1.y + " " + p1.z + " ) ( " + p2.x + " " + p2.y + " " + p2.z + " ) ( " + p3.x + " " + p3.y + " " + p3.z + " ) " + material + " 0 0 0 " + scale + " " + scale + " " + flag + " 0 0\n";
 255     }
 256
 257     private double[][] getHeightmap(String file) {
 258         try {
 259             BufferedImage bimg = ImageIO.read(new File(file));
 260             Raster raster = bimg.getRaster();
 261             int x = raster.getWidth();
 262             int y = raster.getHeight();
 263
 264             double[][] result = new double[x][y];
 265
 266             for (int xi = 0; xi < x; ++xi) {
 267                 for (int yi = 0; yi < y; ++yi) {
 268                     float[] pixel = raster.getPixel(xi, yi, (float[]) null);
 269
 270                     int channels;
 271                     boolean alpha;
 272                     if (pixel.length == 3) {
 273                         // RGB
 274                         channels = 3;
 275                         alpha = false;
 276                     } else if (pixel.length == 4) {
 277                         // RGBA
 278                         channels = 3;
 279                         alpha = true;
 280                     } else if (pixel.length == 1) {
 281                         // grayscale
 282                         channels = 1;
 283                         alpha = false;
 284                     } else {
 285                         // grayscale with alpha
 286                         channels = 1;
 287                         alpha = true;
 288                     }
 289
 290                     float tmp = 0f;
 291                     for (int i = 0; i < channels; ++i) {
 292                         tmp += pixel[i];
 293                     }
 294                     result[xi][yi] = tmp / (channels * 255f);
 295
 296                     if (alpha) {
 297                         // mark this pixel to be skipped
 298                         if (pixel[pixel.length - 1] < 64.0) {
 299                             result[xi][yi] = -1.0;
 300                         }
 301                     }
 302                 }
 303             }
 304
 305
 306             return result;
 307         } catch (IOException ex) {
 308             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
 309         }
 310
 311         return null;
 312     }
 313
 314     private double[][] getColumns(double[][] heights) {
 315         double[][] result = new double[heights.length][heights[0].length];
 316
 317         for (int x = 0; x < heights.length; ++x) {
 318             for (int y = 0; y < heights[0].length; ++y) {
 319                 result[x][y] = getMinMaxForRegion(heights, x, y, 2)[0];
 320             }
 321         }
 322
 323         return result;
 324     }
 325
 326     private double[] getMinMaxForRegion(double[][] field, int x, int y, int dim) {
 327         return getMinMaxForRegion(field, x, y, dim, dim);
 328     }
 329
 330     private double[] getMinMaxForRegion(double[][] field, int x, int y, int xdim, int ydim) {
 331         double max = -100d;
 332         double min = 100d;
 333
 334         for (int i = x; i < x + xdim; ++i) {
 335             for (int j = y; j < y + ydim; ++j) {
 336                 if (i >= 0 && j >= 0 && i < field.length && j < field[0].length) {
 337                     min = field[i][j] < min ? field[i][j] : min;
 338                     max = field[i][j] > max ? field[i][j] : max;
 339                 }
 340             }
 341         }
 342
 343         double[] result = {min, max};
 344         return result;
 345     }
 346
 347     private List<Block> genBlockers(double[][] columns, double delta) {
 348
 349         Block[][] blockers = new Block[columns.length][columns[0].length];
 350         LinkedList<Block> result = new LinkedList<Block>();
 351
 352         for (int x = 0; x < columns.length; ++x) {
 353             for (int y = 0; y < columns[0].length; ++y) {
 354                 if (blockers[x][y] == null && columns[x][y] >= 0) {
 355                     // this pixel isn't covered by a blocker yet... so let's create one!
 356                     Block b = new Block();
 357                     result.add(b);
 358                     b.x = x;
 359                     b.y = y;
 360                     b.minheight = b.origheight = columns[x][y];
 361
 362                     // grow till the delta hits
 363                     int xdim = 1;
 364                     int ydim = 1;
 365                     boolean xgrow = true;
 366                     boolean ygrow = true;
 367                     double min = b.minheight;
 368                     for (; xdim < columns.length && ydim < columns[0].length;) {
 369                         double[] minmax = getMinMaxForRegion(columns, x, y, xdim + 1, ydim);
 370                         if (Math.abs(b.origheight - minmax[0]) > delta || Math.abs(b.origheight - minmax[1]) > delta) {
 371                             xgrow = false;
 372                         }
 373
 374                         minmax = getMinMaxForRegion(columns, x, y, xdim, ydim + 1);
 375                         if (Math.abs(b.origheight - minmax[0]) > delta || Math.abs(b.origheight - minmax[1]) > delta) {
 376                             ygrow = false;
 377                         }
 378
 379                         min = minmax[0];
 380
 381                         if (xgrow) {
 382                             ++xdim;
 383                         }
 384                         if (ygrow) {
 385                             ++ydim;
 386                         }
 387
 388                         minmax = getMinMaxForRegion(columns, x, y, xdim, ydim);
 389                         min = minmax[0];
 390
 391                         if (!(xgrow || ygrow)) {
 392                             break;
 393                         }
 394                     }
 395
 396                     b.xdim = xdim;
 397                     b.ydim = ydim;
 398                     b.minheight = min;
 399
 400                     for (int i = x; i < x + b.xdim; ++i) {
 401                         for (int j = y; j < y + b.ydim; ++j) {
 402                             if (i >= 0 && j >= 0 && i < blockers.length && j < blockers[0].length) {
 403                                 blockers[i][j] = b;
 404                                 columns[i][j] = -1337.0;
 405                             }
 406                         }
 407                     }
 408
 409                 }
 410             }
 411         }
 412         return result;
 413     }
 414
 415     private List<Block> genSkyFillers(double[][] columns) {
 416
 417         double delta = 0;
 418
 419         for (int x = 0; x < columns.length; ++x) {
 420             for (int y = 0; y < columns[0].length; ++y) {
 421                 if (columns[x][y] < 0) {
 422                     // this is a skipped block, see if it neighbours a
 423                     // relevant block
 424                     if (getMinMaxForRegion(columns, x - 1, y - 1, 3)[1] >= 0) {
 425                         columns[x][y] = -100d;
 426                     }
 427                 }
 428             }
 429         }
 430
 431
 432         Block[][] fillers = new Block[columns.length][columns[0].length];
 433         LinkedList<Block> result = new LinkedList<Block>();
 434
 435         for (int x = 0; x < columns.length; ++x) {
 436             for (int y = 0; y < columns[0].length; ++y) {
 437                 if (fillers[x][y] == null && columns[x][y] == -100d) {
 438                     // this pixel is marked to be skyfill
 439                     Block b = new Block();
 440                     result.add(b);
 441                     b.x = x;
 442                     b.y = y;
 443                     b.minheight = b.origheight = columns[x][y];
 444
 445                     // grow till the delta hits
 446                     int xdim = 1;
 447                     int ydim = 1;
 448                     boolean xgrow = true;
 449                     boolean ygrow = true;
 450                     double min = b.minheight;
 451                     for (; xdim < columns.length && ydim < columns[0].length;) {
 452                         double[] minmax = getMinMaxForRegion(columns, x, y, xdim + 1, ydim);
 453                         if (Math.abs(b.origheight - minmax[0]) > delta || Math.abs(b.origheight - minmax[1]) > delta) {
 454                             xgrow = false;
 455                         }
 456
 457                         minmax = getMinMaxForRegion(columns, x, y, xdim, ydim + 1);
 458                         if (Math.abs(b.origheight - minmax[0]) > delta || Math.abs(b.origheight - minmax[1]) > delta) {
 459                             ygrow = false;
 460                         }
 461
 462                         min = minmax[0];
 463
 464                         if (xgrow) {
 465                             ++xdim;
 466                         }
 467                         if (ygrow) {
 468                             ++ydim;
 469                         }
 470
 471                         minmax = getMinMaxForRegion(columns, x, y, xdim, ydim);
 472                         min = minmax[0];
 473
 474                         if (!(xgrow || ygrow)) {
 475                             break;
 476                         }
 477                     }
 478
 479                     b.xdim = xdim;
 480                     b.ydim = ydim;
 481                     b.minheight = min;
 482
 483                     for (int i = x; i < x + b.xdim; ++i) {
 484                         for (int j = y; j < y + b.ydim; ++j) {
 485                             if (i >= 0 && j >= 0 && i < fillers.length && j < fillers[0].length) {
 486                                 fillers[i][j] = b;
 487                                 columns[i][j] = -1337.0;
 488                             }
 489                         }
 490                     }
 491
 492                 }
 493             }
 494         }
 495         return result;
 496     }
 497
 498     private class Vector3D {
 499
 500         public double x,  y,  z;
 501
 502         public Vector3D() {
 503             this(0.0, 0.0, 0.0);
 504         }
 505
 506         public Vector3D(double x, double y, double z) {
 507             this.x = x;
 508             this.y = y;
 509             this.z = z;
 510         }
 511
 512         public Vector3D crossproduct(Vector3D p1) {
 513             Vector3D result = new Vector3D();
 514
 515             result.x = this.y * p1.z - this.z * p1.y;
 516             result.y = this.z * p1.x - this.x * p1.z;
 517             result.z = this.x * p1.y - this.y * p1.x;
 518
 519             return result;
 520         }
 521
 522         public double dotproduct(Vector3D p1) {
 523             return this.x * p1.x + this.y * p1.y + this.z * p1.z;
 524         }
 525
 526         public Vector3D substract(Vector3D p1) {
 527             Vector3D result = new Vector3D();
 528
 529             result.x = this.x - p1.x;
 530             result.y = this.y - p1.y;
 531             result.z = this.z - p1.z;
 532
 533             return result;
 534         }
 535
 536         public void scale(double factor) {
 537             x *= factor;
 538             y *= factor;
 539             z *= factor;
 540         }
 541
 542         public double length() {
 543             return Math.sqrt((x * x) + (y * y) + (z * z));
 544         }
 545
 546         public void normalize() {
 547             double l = length();
 548
 549             x /= l;
 550             y /= l;
 551             z /= l;
 552         }
 553     }
 554
 555     private class Block {
 556
 557         public int x,  y,  xdim,  ydim;
 558         public double origheight,  minheight;
 559     }
 560 }