PerfumeWorldImageImporter

penrose.png

PerfumeWorldImageImporter.pde

final String fileName = "penrose.png"; 
final String outJsonName = "out.json";

final int voxelsWidth  = 80;
final int voxelsHeight = 60;

class Voxel {
  public Voxel(int x_, int y_) {
    x = x_;
    y = y_;
  }
  public int x;
  public int y;
  public int r;
  public int g;
  public int b;
}

ArrayList<Voxel> voxels = new ArrayList<Voxel>(voxelsWidth * voxelsHeight);
PImage image = loadImage(fileName);

int dstWidth = 0;
int dstHeight = 0;

if(abs(image.width * 3 - image.height * 4) < 10) {
  println("p1");
  dstWidth = voxelsWidth;
  dstHeight = voxelsHeight;
} else if(image.width * 3 < image.height * 4) {
  println("p2");
  dstWidth  = (int)((float)voxelsHeight * image.width / image.height);
  dstHeight = voxelsHeight;
} else {
  println("p3");
  dstWidth  = voxelsWidth;
  dstHeight = (int)((float)voxelsWidth * image.height / image.width);
}

println(dstWidth, dstHeight);
image.resize(dstWidth, dstHeight);
image.loadPixels();

int offsetX = (voxelsWidth - dstWidth) / 2;
int offsetY = (voxelsHeight - dstHeight) / 2;
for(int j = 0; j < dstHeight; j++) {
  for(int i = 0; i < dstWidth; i++) {
    Voxel v = new Voxel(i + offsetX, j + offsetY);
    color c = image.pixels[i + j * dstWidth];
    v.r = ((c >> 16) & 255);
    v.g = ((c >> 8) & 255);
    v.b = (c & 255);
    voxels.add(v);
  }
}

import java.util.Date;

JSONObject obj = new JSONObject();
try {
  Date d = new Date();
  obj.setLong("updatedAt", d.getTime());
  obj.setInt("version", 1);
  JSONArray arr = new JSONArray();
  for(int n = 0; n < voxels.size(); n++) {
    JSONObject o = new JSONObject();
    Voxel v = voxels.get(n);
    o.setInt("id", n);
    o.setInt("color", v.r * 65536 + v.g * 256 + v.b);
    o.setInt("x", v.x);
    o.setInt("y", 0);
    o.setInt("z", v.y);
    o.setInt("w", 1);
    o.setInt("h", 1);
    o.setInt("d", 1);
    arr.append(o);
  }
  obj.setJSONArray("voxels", arr);
  saveJSONObject(obj, outJsonName);
} catch(Exception e) {
  
}

exit();