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 void writeMap(Parameters p) {
  24         if (!(new File(p.infile).exists())) {
  25             return;
  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;
  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                 }
  93             }
  94         }
  95
  96         // worldspawn end
  97         buf.append("}\n");
  98         try {
  99             fos.write(buf.toString().getBytes());
 100         } catch (IOException ex) {
 101             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
 102         }
 103     }
 104
 105     private String getMapPlaneString(Vector3D p1, Vector3D p2, Vector3D p3, boolean detail, String material, double scale) {
 106         int flag;
 107         if (detail) {
 108             flag = 134217728;
 109         } else {
 110             flag = 0;
 111         }
 112         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";
 113     }
 114
 115     private class Vector3D {
 116
 117         public double x,  y,  z;
 118
 119         public Vector3D() {
 120             this(0.0, 0.0, 0.0);
 121         }
 122
 123         public Vector3D(double x, double y, double z) {
 124             this.x = x;
 125             this.y = y;
 126             this.z = z;
 127         }
 128
 129         public Vector3D crossproduct(Vector3D p1) {
 130             Vector3D result = new Vector3D();
 131
 132             result.x = this.y * p1.z - this.z * p1.y;
 133             result.y = this.z * p1.x - this.x * p1.z;
 134             result.z = this.x * p1.y - this.y * p1.x;
 135
 136             return result;
 137         }
 138
 139         public double dotproduct(Vector3D p1) {
 140             return this.x * p1.x + this.y * p1.y + this.z * p1.z;
 141         }
 142
 143         public Vector3D substract(Vector3D p1) {
 144             Vector3D result = new Vector3D();
 145
 146             result.x = this.x - p1.x;
 147             result.y = this.y - p1.y;
 148             result.z = this.z - p1.z;
 149
 150             return result;
 151         }
 152
 153         public void scale(double factor) {
 154             x *= factor;
 155             y *= factor;
 156             z *= factor;
 157         }
 158
 159         public double length() {
 160             return Math.sqrt((x * x) + (y * y) + (z * z));
 161         }
 162
 163         public void normalize() {
 164             double l = length();
 165
 166             x /= l;
 167             y /= l;
 168             z /= l;
 169         }
 170     }
 171
 172     private double[][] getHeightmap(String file) {
 173         try {
 174             BufferedImage bimg = ImageIO.read(new File(file));
 175             Raster raster = bimg.getRaster();
 176             int x = raster.getWidth();
 177             int y = raster.getHeight();
 178
 179             double[][] result = new double[x][y];
 180
 181             for (int xi = 0; xi < x; ++xi) {
 182                 for (int yi = 0; yi < y; ++yi) {
 183                     float[] pixel = raster.getPixel(xi, yi, (float[]) null);
 184
 185                     int channels;
 186                     boolean alpha;
 187                     if (pixel.length == 3) {
 188                         // RGB
 189                         channels = 3;
 190                         alpha = false;
 191                     } else if (pixel.length == 4) {
 192                         // RGBA
 193                         channels = 3;
 194                         alpha = true;
 195                     } else if (pixel.length == 1) {
 196                         // grayscale
 197                         channels = 1;
 198                         alpha = false;
 199                     } else {
 200                         // grayscale with alpha
 201                         channels = 1;
 202                         alpha = true;
 203                     }
 204
 205                     float tmp = 0f;
 206                     for (int i = 0; i < channels; ++i) {
 207                         tmp += pixel[i];
 208                     }
 209                     result[xi][yi] = tmp / (channels * 255f);
 210
 211                     if (alpha) {
 212                         // mark this pixel to be skipped
 213                         if (pixel[pixel.length - 1] < 64.0) {
 214                             result[xi][yi] = -1.0;
 215                         }
 216                     }
 217                 }
 218             }
 219
 220
 221             return result;
 222         } catch (IOException ex) {
 223             Logger.getLogger(MapWriter.class.getName()).log(Level.SEVERE, null, ex);
 224         }
 225
 226         return null;
 227     }
 228 }