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
  45         // worldspawn start
  46         pw.print("{\n\"classname\" \"worldspawn\"\n");
  47
  48         // wander through grid
  49         for (int x = 0; x < height.length - 1; ++x) {
  50             for (int y = 0; y < height[0].length - 1; ++y) {
  51
  52                 boolean skip = getMinMaxForRegion(height, x, y, 2)[0] < 0;
  53
  54                 if (!skip) {
  55
  56                     /*
  57                      *
  58                      *      a +-------+ b
  59                      *       /       /|
  60                      *      /       / |
  61                      *     /       /  |
  62                      *  c +-------+ d + f   (e occluded, unused)
  63                      *    |       |  /
  64                      *    |       | /
  65                      *    |       |/
  66                      *  g +-------+ h
  67                      *
  68                      */
  69
  70                     Vector3D a = new Vector3D(x * units, -y * units, height[x][y] * max);
  71                     Vector3D b = new Vector3D((x + 1) * units, -y * units, height[x + 1][y] * max);
  72                     Vector3D c = new Vector3D(x * units, -(y + 1) * units, height[x][y + 1] * max);
  73                     Vector3D d = new Vector3D((x + 1) * units, -(y + 1) * units, height[x + 1][y + 1] * max);
  74                     //Vector3D e = new Vector3D(x * units, -y * units, -16.0);
  75                     Vector3D f = new Vector3D((x + 1) * units, -y * units, -16.0);
  76                     Vector3D g = new Vector3D(x * units, -(y + 1) * units, -16.0);
  77                     Vector3D h = new Vector3D((x + 1) * units, -(y + 1) * units, -16.0);
  78
  79                     pw.print("{\n");
  80                     pw.print(getMapPlaneString(a, b, d, p.detail, p.texture, p.texturescale));
  81                     pw.print(getMapPlaneString(d, b, f, p.detail, "common/caulk", p.texturescale));
  82                     pw.print(getMapPlaneString(f, b, a, p.detail, "common/caulk", p.texturescale));
  83                     pw.print(getMapPlaneString(a, d, h, p.detail, "common/caulk", p.texturescale));
  84                     pw.print(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
  85                     pw.print("}\n");
  86
  87
  88                     pw.print("{\n");
  89                     pw.print(getMapPlaneString(d, c, a, p.detail, p.texture, p.texturescale));
  90                     pw.print(getMapPlaneString(g, c, d, p.detail, "common/caulk", p.texturescale));
  91                     pw.print(getMapPlaneString(c, g, a, p.detail, "common/caulk", p.texturescale));
  92                     pw.print(getMapPlaneString(h, d, a, p.detail, "common/caulk", p.texturescale));
  93                     pw.print(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
  94                     pw.print("}\n");
  95                 }
  96             }
  97         }
  98
  99         if (p.skyfill) {
 100             for (int x = 0; x < columns.length; ++x) {
 101                 for (int y = 0; y < columns[0].length; ++y) {
 102                     if (columns[x][y] < 0) {
 103                         // this is a skipped block, see if it neighbours a
 104                         // relevant block
 105                         double tmp = getMinMaxForRegion(columns, x - 1, y - 1, 3)[1];
 106                         if (tmp >= 0) {
 107                             Vector3D p1 = new Vector3D(x * units, -(y + 1) * units, -32.0);
 108                             Vector3D p2 = new Vector3D((x + 1) * units, -y * units, p.skyheight);
 109
 110                             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 111                         }
 112                     }
 113                 }
 114             }
 115         }
 116
 117         if (p.sky) {
 118             // generate skybox
 119             int x = height.length - 1;
 120             int y = height[0].length - 1;
 121
 122             // top
 123             Vector3D p1 = new Vector3D(0, -y * units, p.skyheight);
 124             Vector3D p2 = new Vector3D(x * units, 0, p.skyheight + 32.0);
 125             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 126
 127             // bottom
 128             p1 = new Vector3D(0, -y * units, -64.0);
 129             p2 = new Vector3D(x * units, 0, -32.0);
 130             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 131
 132             // north
 133             p1 = new Vector3D(0, 0, -32.0);
 134             p2 = new Vector3D(x * units, 32, p.skyheight);
 135             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 136
 137             // east
 138             p1 = new Vector3D(x * units, -y * units, -32.0);
 139             p2 = new Vector3D(x * units + 32.0, 0, p.skyheight);
 140             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 141
 142             // south
 143             p1 = new Vector3D(0, -y * units - 32, -32.0);
 144             p2 = new Vector3D(x * units, -y * units, p.skyheight);
 145             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 146
 147
 148             // west
 149             p1 = new Vector3D(0 - 32.0, -y * units, -32.0);
 150             p2 = new Vector3D(0, 0, p.skyheight);
 151             writeBoxBrush(pw, p1, p2, false, p.skytexture, 1.0);
 152
 153         }
 154
 155         // genBlockers screws the columns array!
 156         // this should be the last step!
 157         if (p.visblockers) {
 158             List<VisBlocker> blockers = genBlockers(columns, 0.15);
 159             double xmax = (columns.length - 1) * units;
 160             double ymax = (columns[0].length - 1) * units;
 161             for (VisBlocker b : blockers) {
 162                 double z = b.minheight * p.height;
 163                 z = Math.floor(z / 16);
 164                 z = z * 16;
 165
 166                 if (z > 0) {
 167                     int dim = b.dim;
 168
 169                     double x = b.x * units;
 170                     double y = (b.y + dim) * units;
 171                     x = x > xmax ? xmax : x;
 172                     y = y > ymax ? ymax : y;
 173                     Vector3D p1 = new Vector3D(x, -y, -32.0);
 174
 175                     x = (b.x + dim) * units;
 176                     y = b.y * units;
 177                     x = x > xmax ? xmax : x;
 178                     y = y > ymax ? ymax : y;
 179                     Vector3D p2 = new Vector3D(x, -y, z);
 180
 181                     writeBoxBrush(pw, p1, p2, false, "common/caulk", 1.0);
 182                 }
 183
 184             }
 185         }
 186
 187         // worldspawn end
 188         pw.print("}\n");
 189         pw.close();
 190         return 0;
 191     }
 192
 193     private void writeBoxBrush(PrintWriter pw, Vector3D p1, Vector3D p2, boolean detail, String texture, double scale) {
 194         Vector3D a = new Vector3D(p1.x, p2.y, p2.z);
 195         Vector3D b = p2;
 196         Vector3D c = new Vector3D(p1.x, p1.y, p2.z);
 197         Vector3D d = new Vector3D(p2.x, p1.y, p2.z);
 198         //Vector3D e unused
 199         Vector3D f = new Vector3D(p2.x, p2.y, p1.z);
 200         Vector3D g = p1;
 201         Vector3D h = new Vector3D(p2.x, p1.y, p1.z);
 202
 203         pw.print("{\n");
 204         pw.print(getMapPlaneString(a, b, d, detail, texture, scale));
 205         pw.print(getMapPlaneString(d, b, f, detail, texture, scale));
 206         pw.print(getMapPlaneString(c, d, h, detail, texture, scale));
 207         pw.print(getMapPlaneString(a, c, g, detail, texture, scale));
 208         pw.print(getMapPlaneString(f, b, a, detail, texture, scale));
 209         pw.print(getMapPlaneString(g, h, f, detail, texture, scale));
 210         pw.print("}\n");
 211
 212     }
 213
 214     private String getMapPlaneString(Vector3D p1, Vector3D p2, Vector3D p3, boolean detail, String material, double scale) {
 215         int flag;
 216         if (detail) {
 217             flag = 134217728;
 218         } else {
 219             flag = 0;
 220         }
 221         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";
 222     }
 223
 224     private double[][] getHeightmap(String file) {
 225         try {
 226             BufferedImage bimg = ImageIO.read(new File(file));
 227             Raster raster = bimg.getRaster();
 228             int x = raster.getWidth();
 229             int y = raster.getHeight();
 230
 231             double[][] result = new double[x][y];
 232
 233             for (int xi = 0; xi < x; ++xi) {
 234                 for (int yi = 0; yi < y; ++yi) {
 235                     float[] pixel = raster.getPixel(xi, yi, (float[]) null);
 236
 237                     int channels;
 238                     boolean alpha;
 239                     if (pixel.length == 3) {
 240                         // RGB
 241                         channels = 3;
 242                         alpha = false;
 243                     } else if (pixel.length == 4) {
 244                         // RGBA
 245                         channels = 3;
 246                         alpha = true;
 247                     } else if (pixel.length == 1) {
 248                         // grayscale
 249                         channels = 1;
 250                         alpha = false;
 251                     } else {
 252                         // grayscale with alpha
 253                         channels = 1;
 254                         alpha = true;
 255                     }
 256
 257                     float tmp = 0f;
 258                     for (int i = 0; i < channels; ++i) {
 259                         tmp += pixel[i];
 260                     }
 261                     result[xi][yi] = tmp / (channels * 255f);
 262
 263                     if (alpha) {
 264                         // mark this pixel to be skipped
 265                         if (pixel[pixel.length - 1] < 64.0) {
 266                             result[xi][yi] = -1.0;
 267                         }
 268                     }
 269                 }
 270             }
 271
 272
 273             return result;
 274         } catch (IOException ex) {
 275             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
 276         }
 277
 278         return null;
 279     }
 280
 281     private double[][] getColumns(double[][] heights) {
 282         double[][] result = new double[heights.length][heights[0].length];
 283
 284         for (int x = 0; x < heights.length; ++x) {
 285             for (int y = 0; y < heights[0].length; ++y) {
 286                 result[x][y] = getMinMaxForRegion(heights, x, y, 2)[0];
 287             }
 288         }
 289
 290         return result;
 291     }
 292
 293     private double[] getMinMaxForRegion(double[][] field, int x, int y, int dim) {
 294         double max = -100d;
 295         double min = 100d;
 296
 297         for (int i = x; i < x + dim; ++i) {
 298             for (int j = y; j < y + dim; ++j) {
 299                 if (i >= 0 && j >= 0 && i < field.length && j < field[0].length) {
 300                     min = field[i][j] < min ? field[i][j] : min;
 301                     max = field[i][j] > max ? field[i][j] : max;
 302                 }
 303             }
 304         }
 305
 306         double[] result = {min, max};
 307         return result;
 308     }
 309
 310     public List<VisBlocker> genBlockers(double[][] columns, double delta) {
 311
 312         VisBlocker[][] blockers = new VisBlocker[columns.length][columns[0].length];
 313         LinkedList<VisBlocker> result = new LinkedList<VisBlocker>();
 314
 315         for (int x = 0; x < columns.length; ++x) {
 316             for (int y = 0; y < columns[0].length; ++y) {
 317                 if (blockers[x][y] == null && columns[x][y] >= 0) {
 318                     // this pixel isn't covered by a blocker yet... so let's create one!
 319                     VisBlocker b = new VisBlocker();
 320                     result.add(b);
 321                     b.x = x;
 322                     b.y = y;
 323                     b.minheight = b.origheight = columns[x][y];
 324
 325                     // grow till the delta hits
 326                     int dim;
 327                     double min = b.minheight;
 328                     for (dim = 1; dim < columns.length; ++dim) {
 329                         double[] minmax = getMinMaxForRegion(columns, x, y, dim);
 330                         if (Math.abs(b.origheight - minmax[0]) > delta || Math.abs(b.origheight - minmax[1]) > delta) {
 331                             break;
 332                         }
 333                         min = minmax[0];
 334
 335                     }
 336
 337                     b.dim = dim - 1;
 338                     b.minheight = min;
 339
 340                     for (int i = x; i < x + b.dim; ++i) {
 341                         for (int j = y; j < y + b.dim; ++j) {
 342                             if (i >= 0 && j >= 0 && i < blockers.length && j < blockers[0].length) {
 343                                 blockers[i][j] = b;
 344                                 columns[i][j] = -1337.0;
 345                             }
 346                         }
 347                     }
 348
 349                 }
 350             }
 351         }
 352         return result;
 353     }
 354
 355     private class Vector3D {
 356
 357         public double x,  y,  z;
 358
 359         public Vector3D() {
 360             this(0.0, 0.0, 0.0);
 361         }
 362
 363         public Vector3D(double x, double y, double z) {
 364             this.x = x;
 365             this.y = y;
 366             this.z = z;
 367         }
 368
 369         public Vector3D crossproduct(Vector3D p1) {
 370             Vector3D result = new Vector3D();
 371
 372             result.x = this.y * p1.z - this.z * p1.y;
 373             result.y = this.z * p1.x - this.x * p1.z;
 374             result.z = this.x * p1.y - this.y * p1.x;
 375
 376             return result;
 377         }
 378
 379         public double dotproduct(Vector3D p1) {
 380             return this.x * p1.x + this.y * p1.y + this.z * p1.z;
 381         }
 382
 383         public Vector3D substract(Vector3D p1) {
 384             Vector3D result = new Vector3D();
 385
 386             result.x = this.x - p1.x;
 387             result.y = this.y - p1.y;
 388             result.z = this.z - p1.z;
 389
 390             return result;
 391         }
 392
 393         public void scale(double factor) {
 394             x *= factor;
 395             y *= factor;
 396             z *= factor;
 397         }
 398
 399         public double length() {
 400             return Math.sqrt((x * x) + (y * y) + (z * z));
 401         }
 402
 403         public void normalize() {
 404             double l = length();
 405
 406             x /= l;
 407             y /= l;
 408             z /= l;
 409         }
 410     }
 411
 412     private class VisBlocker {
 413
 414         public int x,  y,  dim;
 415         public double origheight,  minheight;
 416     }
 417 }