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.util.logging.Level;
  14 import java.util.logging.Logger;
  15 import javax.imageio.ImageIO;
  16
  17 /**
  18  *
  19  * @author maik
  20  */
  21 public class MapWriter {
  22
  23     public int writeMap(Parameters p) {
  24         if (!(new File(p.infile).exists())) {
  25             return 1;
  26         }
  27
  28         FileOutputStream fos;
  29         try {
  30             fos = new FileOutputStream(new File(p.outfile));
  31         } catch (FileNotFoundException ex) {
  32             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
  33             return 1;
  34         }
  35
  36         double[][] height = getHeightmap(p.infile);
  37         double units = 1d * p.pixelsize;
  38         double max = p.height;
  39
  40         StringBuffer buf = new StringBuffer();
  41
  42         // worldspawn start
  43         buf.append("{\n\"classname\" \"worldspawn\"\n");
  44
  45         // wander through grid
  46         for (int x = 0; x < height.length - 1; ++x) {
  47             for (int y = 0; y < height[0].length - 1; ++y) {
  48
  49                 boolean skip = height[x][y] < 0 || height[x][y + 1] < 0 || height[x + 1][y] < 0 || height[x + 1][y + 1] < 0;
  50
  51                 if (!skip) {
  52
  53                     /*
  54                      *
  55                      *      a +-------+ b
  56                      *       /       /|
  57                      *      /       / |
  58                      *     /       /  |
  59                      *  c +-------+ d + f   (e occluded, unused)
  60                      *    |       |  /
  61                      *    |       | /
  62                      *    |       |/
  63                      *  g +-------+ h
  64                      *
  65                      */
  66
  67                     Vector3D a = new Vector3D(x * units, -y * units, height[x][y] * max);
  68                     Vector3D b = new Vector3D((x + 1) * units, -y * units, height[x + 1][y] * max);
  69                     Vector3D c = new Vector3D(x * units, -(y + 1) * units, height[x][y + 1] * max);
  70                     Vector3D d = new Vector3D((x + 1) * units, -(y + 1) * units, height[x + 1][y + 1] * max);
  71                     //Vector3D e = new Vector3D(x * units, -y * units, -16.0);
  72                     Vector3D f = new Vector3D((x + 1) * units, -y * units, -16.0);
  73                     Vector3D g = new Vector3D(x * units, -(y + 1) * units, -16.0);
  74                     Vector3D h = new Vector3D((x + 1) * units, -(y + 1) * units, -16.0);
  75
  76                     buf.append("{\n");
  77                     buf.append(getMapPlaneString(a, b, d, p.detail, p.texture, p.texturescale));
  78                     buf.append(getMapPlaneString(d, b, f, p.detail, "common/caulk", p.texturescale));
  79                     buf.append(getMapPlaneString(f, b, a, p.detail, "common/caulk", p.texturescale));
  80                     buf.append(getMapPlaneString(a, d, h, p.detail, "common/caulk", p.texturescale));
  81                     buf.append(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
  82                     buf.append("}\n");
  83
  84
  85                     buf.append("{\n");
  86                     buf.append(getMapPlaneString(d, c, a, p.detail, p.texture, p.texturescale));
  87                     buf.append(getMapPlaneString(g, c, d, p.detail, "common/caulk", p.texturescale));
  88                     buf.append(getMapPlaneString(c, g, a, p.detail, "common/caulk", p.texturescale));
  89                     buf.append(getMapPlaneString(h, d, a, p.detail, "common/caulk", p.texturescale));
  90                     buf.append(getMapPlaneString(g, h, f, p.detail, "common/caulk", p.texturescale));
  91                     buf.append("}\n");
  92                 } else if (p.skyfill) {
  93                     // fill skipped blocks with sky
  94                     Vector3D p1 = new Vector3D(x * units, -(y + 1) * units, -32.0);
  95                     Vector3D p2 = new Vector3D((x + 1) * units, -y * units, p.skyheight);
  96
  97                     writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
  98                 }
  99             }
 100         }
 101
 102         if (p.sky) {
 103             // generate skybox
 104             int x = height.length - 1;
 105             int y = height[0].length - 1;
 106
 107             // top
 108             Vector3D p1 = new Vector3D(0, -y * units, p.skyheight);
 109             Vector3D p2 = new Vector3D(x * units, 0, p.skyheight + 32.0);
 110             writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
 111
 112             // bottom
 113             p1 = new Vector3D(0, -y * units, -64.0);
 114             p2 = new Vector3D(x * units, 0, -32.0);
 115             writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
 116
 117             // north
 118             p1 = new Vector3D(0, 0, -32.0);
 119             p2 = new Vector3D(x * units, 32, p.skyheight);
 120             writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
 121
 122             // east
 123             p1 = new Vector3D(x * units, -y * units, -32.0);
 124             p2 = new Vector3D(x * units + 32.0, 0, p.skyheight);
 125             writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
 126
 127             // south
 128             p1 = new Vector3D(0, -y * units - 32, -32.0);
 129             p2 = new Vector3D(x * units, -y * units, p.skyheight);
 130             writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
 131
 132
 133             // west
 134             p1 = new Vector3D(0 - 32.0, -y * units, -32.0);
 135             p2 = new Vector3D(0, 0, p.skyheight);
 136             writeBoxBrush(buf, p1, p2, false, p.skytexture, 1.0);
 137
 138         }
 139
 140         // worldspawn end
 141         buf.append("}\n");
 142         try {
 143             fos.write(buf.toString().getBytes());
 144         } catch (IOException ex) {
 145             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
 146             return 1;
 147         }
 148         return 0;
 149     }
 150
 151     private void writeBoxBrush(StringBuffer buf, Vector3D p1, Vector3D p2, boolean detail, String texture, double scale) {
 152         Vector3D a = new Vector3D(p1.x, p2.y, p2.z);
 153         Vector3D b = p2;
 154         Vector3D c = new Vector3D(p1.x, p1.y, p2.z);
 155         Vector3D d = new Vector3D(p2.x, p1.y, p2.z);
 156         //Vector3D e unused
 157         Vector3D f = new Vector3D(p2.x, p2.y, p1.z);
 158         Vector3D g = p1;
 159         Vector3D h = new Vector3D(p2.x, p1.y, p1.z);
 160
 161         buf.append("{\n");
 162         buf.append(getMapPlaneString(a, b, d, detail, texture, scale));
 163         buf.append(getMapPlaneString(d, b, f, detail, texture, scale));
 164         buf.append(getMapPlaneString(c, d, h, detail, texture, scale));
 165         buf.append(getMapPlaneString(a, c, g, detail, texture, scale));
 166         buf.append(getMapPlaneString(f, b, a, detail, texture, scale));
 167         buf.append(getMapPlaneString(g, h, f, detail, texture, scale));
 168         buf.append("}\n");
 169
 170     }
 171
 172     private String getMapPlaneString(Vector3D p1, Vector3D p2, Vector3D p3, boolean detail, String material, double scale) {
 173         int flag;
 174         if (detail) {
 175             flag = 134217728;
 176         } else {
 177             flag = 0;
 178         }
 179         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";
 180     }
 181
 182     private class Vector3D {
 183
 184         public  double x,        y,        z;
 185
 186         public Vector3D() {
 187             this(0.0, 0.0, 0.0);
 188         }
 189
 190         public Vector3D(double x, double y, double z) {
 191             this.x = x;
 192             this.y = y;
 193             this.z = z;
 194         }
 195
 196         public Vector3D crossproduct(Vector3D p1) {
 197             Vector3D result = new Vector3D();
 198
 199             result.x = this.y * p1.z - this.z * p1.y;
 200             result.y = this.z * p1.x - this.x * p1.z;
 201             result.z = this.x * p1.y - this.y * p1.x;
 202
 203             return result;
 204         }
 205
 206         public double dotproduct(Vector3D p1) {
 207             return this.x * p1.x + this.y * p1.y + this.z * p1.z;
 208         }
 209
 210         public Vector3D substract(Vector3D p1) {
 211             Vector3D result = new Vector3D();
 212
 213             result.x = this.x - p1.x;
 214             result.y = this.y - p1.y;
 215             result.z = this.z - p1.z;
 216
 217             return result;
 218         }
 219
 220         public void scale(double factor) {
 221             x *= factor;
 222             y *= factor;
 223             z *= factor;
 224         }
 225
 226         public double length() {
 227             return Math.sqrt((x * x) + (y * y) + (z * z));
 228         }
 229
 230         public void normalize() {
 231             double l = length();
 232
 233             x /= l;
 234             y /= l;
 235             z /= l;
 236         }
 237     }
 238
 239     private double[][] getHeightmap(String file) {
 240         try {
 241             BufferedImage bimg = ImageIO.read(new File(file));
 242             Raster raster = bimg.getRaster();
 243             int x = raster.getWidth();
 244             int y = raster.getHeight();
 245
 246             double[][] result = new double[x][y];
 247
 248             for (int xi = 0; xi < x; ++xi) {
 249                 for (int yi = 0; yi < y; ++yi) {
 250                     float[] pixel = raster.getPixel(xi, yi, (float[]) null);
 251
 252                     int channels;
 253                     boolean alpha;
 254                     if (pixel.length == 3) {
 255                         // RGB
 256                         channels = 3;
 257                         alpha = false;
 258                     } else if (pixel.length == 4) {
 259                         // RGBA
 260                         channels = 3;
 261                         alpha = true;
 262                     } else if (pixel.length == 1) {
 263                         // grayscale
 264                         channels = 1;
 265                         alpha = false;
 266                     } else {
 267                         // grayscale with alpha
 268                         channels = 1;
 269                         alpha = true;
 270                     }
 271
 272                     float tmp = 0f;
 273                     for (int i = 0; i < channels; ++i) {
 274                         tmp += pixel[i];
 275                     }
 276                     result[xi][yi] = tmp / (channels * 255f);
 277
 278                     if (alpha) {
 279                         // mark this pixel to be skipped
 280                         if (pixel[pixel.length - 1] < 64.0) {
 281                             result[xi][yi] = -1.0;
 282                         }
 283                     }
 284                 }
 285             }
 286
 287
 288             return result;
 289         } catch (IOException ex) {
 290             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
 291         }
 292
 293         return null;
 294     }
 295 }