vsplit v5 (with grid) [665]

!636
!629 // standard functions
!658 // image classes

import java.awt.*;
import java.awt.image.*;
import java.util.List;
import javax.imageio.*;

public class main {
  static RGBImage originalImage;
  
  static abstract class Params {
    RGBImage originalImage;
    abstract RGBImage render();
    abstract Params copy();
    
    void baseClone(Params p) {
      p.originalImage = originalImage;
    }
    
    RGBImage rendered;
    RGBImage getImage() {
      if (rendered == null)
        rendered = render();
      return rendered;
    }
    
    double score = 2.0;
    double getScore() {
      if (score == 2.0)
        score = calcScore();
      return score;
    }
    
    double calcScore() {
      return diff(originalImage, getImage());
    }
    
    boolean isBetterThan(Params p) {
      return getScore() < p.getScore();
    }
  }
  
  static class VSplit extends Params {
    double splitPoint;
    RGB col1, col2;
    
    VSplit copy() {
      VSplit p = new VSplit();
      baseClone(p);
      p.splitPoint = splitPoint;
      p.col1 = col1;
      p.col2 = col2;
      return p;
    }
    
    public String toString() {
      return "VSplit " + splitPoint + " " + col1 + " " + col2;
    }

    RGBImage render() {
      int w = originalImage.getWidth(), h = originalImage.getHeight();
      RGBImage image = new RGBImage(w, h, Color.white);
      vsplit(image, this);
      return image;
    }
  }
  
  static class Solid extends Params {
    RGB col;
    
    Solid copy() {
      Solid p = new Solid();
      baseClone(p);
      p.col = col;
      return p;
    }
    
    public String toString() {
      return "Solid " + col;
    }

    RGBImage render() {
      int w = originalImage.getWidth(), h = originalImage.getHeight();
      return new RGBImage(w, h, col);
    }
  }
  
  interface Reproducer {
    public Params reproduce(RGBImage original);
  }
  
  static class RandomVSplit implements Reproducer {
    int n = -1;
    public Params reproduce(RGBImage original) {
      ++n;
      VSplit p = new VSplit();
      p.originalImage = original;
      p.splitPoint = random();
      if (n % 2 == 0) {
        p.col1 = randomColor();
        p.col2 = randomColor();
      } else {
        p.col1 = probeRandomPixel(original);
        p.col2 = probeRandomPixel(original);
      }
      return p;
    }
  }
  
  static class RandomSolid implements Reproducer {
    int n = -1;
    public Params reproduce(RGBImage original) {
      ++n;
      Solid p = new Solid();
      p.originalImage = original;
      if (n % 2 == 0) {
        p.col = randomColor();
      } else {
        p.col = probeRandomPixel(original);
      }
      return p;
    }
  }
  
  static class VaryBest implements Reproducer {
    Reproducer base;
    Params best;
    
    VaryBest(Reproducer base) {
      this.base = base;
    }
    
    public Params reproduce(RGBImage original) {
      Params p = base.reproduce(original);
      if (best == null || p.isBetterThan(best))
        best = p;
      Params variation = vary(best);
      //System.out.println("Best: " + best.getScore() + ", variation: " + variation.getScore());
      if (variation.isBetterThan(best)) {
        //System.out.println("Using variation, diff=" + (best.getScore()-variation.getScore()));
        best = variation;
      }
      return best;
    }
    
    Params vary(Params p) {
      if (p instanceof VSplit) {
        VSplit n = ((VSplit) p).copy();
        int s = random(3);
        if (s == 0)
          varySplitPoint(n);
        else if (s == 1)
          n.col1 = varyColor(n.col1);
        else
          n.col2 = varyColor(n.col2);
        return n;
      } else if (p instanceof Solid) {
        Solid n = ((Solid) p).copy();
        n.col = varyColor(n.col);
        return n;
      }
      return null;
    }
    
    void varySplitPoint(VSplit p) {
      p.splitPoint = Math.max(0, Math.min(1, p.splitPoint+random(-0.1, 0.1)));
    }
    
    float varyChannel(float x) {
      return Math.max(0f, Math.min(1f, (float) (x+random(-0.1, 0.1))));
    }
    
    RGB varyColor(RGB rgb) {
      int s = random(3);
      if (s == 0)
        return new RGB(varyChannel(rgb.r), rgb.g, rgb.b);
      else if (s == 1)
        return new RGB(rgb.r, varyChannel(rgb.g), rgb.b);
      else
        return new RGB(rgb.r, rgb.g, varyChannel(rgb.b));
    }
  }

  static class Alternate implements Reproducer {
    int n = -1;
    Reproducer[] list;
    
    Alternate(Reproducer... list) {
      this.list = list;
    }
    
    public Params reproduce(RGBImage original) {
      ++n;
      return list[n % list.length].reproduce(original);
    }
  }
  
  interface ReproducerMaker {
    public Reproducer make();
  }
  
  static class Gridded extends Params {
    int w, h;
    Params[] array;
    
    Gridded(int w, int h) {
      this.w = w;
      this.h = h;
      array = new Params[w*h];
    }
    
    Gridded copy() {
      Gridded p = new Gridded(w, h);
      baseClone(p);
      for (int i = 0; i < w*h; i++)
        p.array[i] = array[i].copy();
      return p;
    }
    
    public String toString() {
      StringBuilder buf = new StringBuilder("grid{");
      for (int i = 0; i < w*h; i++) {
        if (i != 0)
          buf.append(", ");
        buf.append(array[i]);
      }
      return buf + "}";
    }
    
    public RGBImage render() {
      int ow = originalImage.getWidth(), oh = originalImage.getHeight();
      RGBImage img = new RGBImage(ow, oh, Color.white);
      for (int y = 0; y < h; y++)
        for (int x = 0; x < w; x++) {
          int x1 = x*ow/w, y1 = y*oh/h;
          int x2 = (x+1)*ow/w, y2 = (y+1)*oh/h;
          RGBImage part = array[y*w+x].render();
          main.copy(part, 0, 0, img, x1, y1, part.getWidth(), part.getHeight());
        }
      return img;
    }
  }
  
  static class Grid implements Reproducer {
    int w, h;
    Reproducer[] bases;
    
    Grid(ReproducerMaker maker, int w, int h) {
      this.w = w;
      this.h = h;
      bases = new Reproducer[w*h];
      for (int i = 0; i < w*h; i++)
        bases[i] = maker.make();
    }
    
    RGBImage getGridElement(RGBImage originalImage, int i) {
      int ow = originalImage.getWidth(), oh = originalImage.getHeight();
      int y = i / w;
      int x = i % w;
      int x1 = x*ow/w, y1 = y*oh/h;
      int x2 = (x+1)*ow/w, y2 = (y+1)*oh/h;
      return originalImage.clip(x1, y1, x2-x1, y2-y1);
    }
      
    public Params reproduce(RGBImage original) {
      Gridded gridded = new Gridded(w, h);
      gridded.originalImage = original;
      for (int i = 0; i < w*h; i++) {
        RGBImage img = getGridElement(original, i);
        Params p = bases[i].reproduce(img);
        if (p == null)
          return null;
        gridded.array[i] = p;
      }
      return gridded;
    }
  }
  
  static class BaseMaker implements ReproducerMaker {
    public Reproducer make() {
      return new VaryBest(
        new Alternate(
          new RandomSolid(), new RandomVSplit()
        ));
    }
  }
    
  // main reproduce function
  static Reproducer reproducer =
    new Grid(new BaseMaker(), 16, 8);
  
  static Params reproduce(RGBImage original, int ntry) {
    int w = original.getWidth(), h = original.getHeight();
    return reproducer.reproduce(original);
  }
  
  public static void main(String[] args) {
    String imageID = "#1000326"; // Bryan Cranston!
    if (args.length != 0) imageID = args[0];
    final String _imageID = imageID;
    
    JFrame frame = new JFrame("A JavaX Frame");
    
    final ImageSurface imageSurface = new ImageSurface();
    Component panel = imageSurface;
    
    frame.add(panel);
    frame.setBounds(100, 100, 500, 400);
    frame.setVisible(true);
    exitOnFrameClose(frame);
    
    new Thread() {
      public void run() {
        originalImage = loadImage(_imageID);
        originalImage = resizeToWidth(originalImage, 100);
        
        reproduceOpenEnd(originalImage, imageSurface);
      }
    }.start();
  }
  
  static void reproduceOpenEnd(RGBImage original, ImageSurface imageSurface) {
    Params best = null;
    long lastPrint = 0;
    for (int ntry = 1; ; ntry++) {
      if (System.currentTimeMillis() >= lastPrint+1000) {
        lastPrint = System.currentTimeMillis();
        if (best == null)
          System.out.println("Try " + ntry);
        else {
          System.out.println("Best: " + best);
          System.out.println("Try " + ntry + ", best: " + best.getScore());
        }
      }
      Params p = reproduce(original, ntry);
      if (best == null || p != null && p.getScore() < best.getScore()) {
        //System.out.println("New best! " + p.getScore());
        best = p;
        imageSurface.setImage(p.getImage());
      }
      
      if (p != null && p.getScore() == 0.0)
        break;
    }
  }
  
  static RGB probeRandomPixel(RGBImage image) {
    int x = (int) (random()*(image.getWidth()-1));
    int y = (int) (random()*(image.getHeight()-1));
    return image.getPixel(x, y);
  }
  
  static RGB randomColor() {
    return new RGB(random(), random(), random());
  }
  
  static RGBImage resizeToWidth(RGBImage image, int w) {
    return resize(image, w, (int) ((image.getHeight()*(double) w)/image.getWidth()));
  }
  
  public static RGBImage resize(RGBImage image, int w, int h) {
    if (w == image.getWidth() && h == image.getHeight()) return image;

    int[] pixels = new int[w*h];
    for (int y = 0; y < h; y++)
      for (int x = 0; x < w; x++)
        pixels[y*w+x] = image.getInt(x*image.getWidth()/w, y*image.getHeight()/h);
    return new RGBImage(w, h, pixels);
  }

  static boolean useImageCache = true;
  static RGBImage loadImage(String snippetID) {
   try {
    File dir = new File(System.getProperty("user.home"), ".tinybrain/image-cache");
    if (useImageCache) {
      dir.mkdirs();
      File file = new File(dir, snippetID + ".png");
      if (file.exists() && file.length() != 0)
        try {
          return new RGBImage(ImageIO.read(file));
        } catch (Throwable e) {
          e.printStackTrace();
          // fall back to loading from sourceforge
        }
    }

    String imageURL = getImageURL(parseSnippetID(snippetID));
    System.err.println("Loading image: " + imageURL);
    BufferedImage image = ImageIO.read(new URL(imageURL));

    if (useImageCache) {
      File tempFile = new File(dir, snippetID + ".tmp." + System.currentTimeMillis());
      ImageIO.write(image, "png", tempFile);
      tempFile.renameTo(new File(dir, snippetID + ".png"));
      //Log.info("Cached image.");
    }

    //Log.info("Loaded image.");
    return new RGBImage(image);
   } catch (IOException e) {
    throw new RuntimeException(e);
   }
  }

  static String getImageURL(long snippetID) throws IOException {
    String url;
    if (snippetID == 1000010 || snippetID == 1000012)
      url = "http://tinybrain.de:8080/tb/show-blobimage.php?id=" + snippetID;
    else
      url = "http://eyeocr.sourceforge.net/filestore/filestore.php?cmd=serve&file=blob_" + snippetID
        + "&contentType=image/png";
    return url;
  }

  public static long parseSnippetID(String snippetID) {
    return Long.parseLong(shortenSnippetID(snippetID));
  }

  private static String shortenSnippetID(String snippetID) {
    if (snippetID.startsWith("#"))
      snippetID = snippetID.substring(1);
    String httpBlaBla = "http://tinybrain.de/";
    if (snippetID.startsWith(httpBlaBla))
      snippetID = snippetID.substring(httpBlaBla.length());
    return snippetID;
  }
  
  static Random _random = new Random();
  static double random() {
    return _random.nextInt(100001)/100000.0;
  }
  
  static int random(int max) {
    return _random.nextInt(max);
  }
  
  static double random(double min, double max) {
    return min+random()*(max-min);
  }
  
  static void vsplit(RGBImage img, VSplit p) {
    int w = img.getWidth(), h = img.getHeight();
    for (int yy = 0; yy < h; yy++)
      for (int xx = 0; xx < w; xx++) {
        //double x = ((double) xx)/(w-1);
        double y = ((double) yy)/(h-1);
        RGB col = y <= p.splitPoint ? p.col1 : p.col2;
        img.setPixel(xx, yy, col);
      }
  }
  
  public static double pixelDiff(RGB a, RGB b) {
    return (Math.abs(a.r-b.r) + Math.abs(a.g-b.g) + Math.abs(a.b-b.b))/3;
  }

  public static double diff(RGBImage image, RGBImage image2) {
    int w = image.getWidth(), h = image.getHeight();
    double sum = 0;
    for (int y = 0; y < h; y++)
      for (int x = 0; x < w; x++)
        sum += pixelDiff(image.getRGB(x, y), image2.getRGB(x, y));
    return sum/(w*h);
  }
  
  public static void copy(RGBImage src, int srcX, int srcY, RGBImage dst, int dstX, int dstY, int w, int h) {
    for (int y = 0; y < h; y++)
      for (int x = 0; x < w; x++)
        dst.setPixel(dstX+x, dstY+y, src.getPixel(srcX+x, srcY+y));
  }
}

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Snippet ID:	#665
Snippet name:	vsplit v5 (with grid)
Eternal ID of this version:	#665/1
Text MD5:	abcecf0141823313b348cd49512b2f4b
Author:	stefan
Category:
Type:	JavaX source code
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2015-07-13 07:15:51
Source code size:	13286 bytes / 472 lines
Pitched / IR pitched:	No / Yes
Views / Downloads:	842 / 746
Referenced in:	[show references]

< > BotCompany Repo | #665 // vsplit v5 (with grid)

JavaX source code - run with: x30.jar

Author comment

1	!636
2	!629 // standard functions
3	!658 // image classes
4
5	import java.awt.*;
6	import java.awt.image.*;
7	import java.util.List;
8	import javax.imageio.*;
9
10	public class main {
11	static RGBImage originalImage;
12
13	static abstract class Params {
14	RGBImage originalImage;
15	abstract RGBImage render();
16	abstract Params copy();
17
18	void baseClone(Params p) {
19	p.originalImage = originalImage;
20	}
21
22	RGBImage rendered;
23	RGBImage getImage() {
24	if (rendered == null)
25	rendered = render();
26	return rendered;
27	}
28
29	double score = 2.0;
30	double getScore() {
31	if (score == 2.0)
32	score = calcScore();
33	return score;
34	}
35
36	double calcScore() {
37	return diff(originalImage, getImage());
38	}
39
40	boolean isBetterThan(Params p) {
41	return getScore() < p.getScore();
42	}
43	}
44
45	static class VSplit extends Params {
46	double splitPoint;
47	RGB col1, col2;
48
49	VSplit copy() {
50	VSplit p = new VSplit();
51	baseClone(p);
52	p.splitPoint = splitPoint;
53	p.col1 = col1;
54	p.col2 = col2;
55	return p;
56	}
57
58	public String toString() {
59	return "VSplit " + splitPoint + " " + col1 + " " + col2;
60	}
61
62	RGBImage render() {
63	int w = originalImage.getWidth(), h = originalImage.getHeight();
64	RGBImage image = new RGBImage(w, h, Color.white);
65	vsplit(image, this);
66	return image;
67	}
68	}
69
70	static class Solid extends Params {
71	RGB col;
72
73	Solid copy() {
74	Solid p = new Solid();
75	baseClone(p);
76	p.col = col;
77	return p;
78	}
79
80	public String toString() {
81	return "Solid " + col;
82	}
83
84	RGBImage render() {
85	int w = originalImage.getWidth(), h = originalImage.getHeight();
86	return new RGBImage(w, h, col);
87	}
88	}
89
90	interface Reproducer {
91	public Params reproduce(RGBImage original);
92	}
93
94	static class RandomVSplit implements Reproducer {
95	int n = -1;
96	public Params reproduce(RGBImage original) {
97	++n;
98	VSplit p = new VSplit();
99	p.originalImage = original;
100	p.splitPoint = random();
101	if (n % 2 == 0) {
102	p.col1 = randomColor();
103	p.col2 = randomColor();
104	} else {
105	p.col1 = probeRandomPixel(original);
106	p.col2 = probeRandomPixel(original);
107	}
108	return p;
109	}
110	}
111
112	static class RandomSolid implements Reproducer {
113	int n = -1;
114	public Params reproduce(RGBImage original) {
115	++n;
116	Solid p = new Solid();
117	p.originalImage = original;
118	if (n % 2 == 0) {
119	p.col = randomColor();
120	} else {
121	p.col = probeRandomPixel(original);
122	}
123	return p;
124	}
125	}
126
127	static class VaryBest implements Reproducer {
128	Reproducer base;
129	Params best;
130
131	VaryBest(Reproducer base) {
132	this.base = base;
133	}
134
135	public Params reproduce(RGBImage original) {
136	Params p = base.reproduce(original);
137	if (best == null \|\| p.isBetterThan(best))
138	best = p;
139	Params variation = vary(best);
140	//System.out.println("Best: " + best.getScore() + ", variation: " + variation.getScore());
141	if (variation.isBetterThan(best)) {
142	//System.out.println("Using variation, diff=" + (best.getScore()-variation.getScore()));
143	best = variation;
144	}
145	return best;
146	}
147
148	Params vary(Params p) {
149	if (p instanceof VSplit) {
150	VSplit n = ((VSplit) p).copy();
151	int s = random(3);
152	if (s == 0)
153	varySplitPoint(n);
154	else if (s == 1)
155	n.col1 = varyColor(n.col1);
156	else
157	n.col2 = varyColor(n.col2);
158	return n;
159	} else if (p instanceof Solid) {
160	Solid n = ((Solid) p).copy();
161	n.col = varyColor(n.col);
162	return n;
163	}
164	return null;
165	}
166
167	void varySplitPoint(VSplit p) {
168	p.splitPoint = Math.max(0, Math.min(1, p.splitPoint+random(-0.1, 0.1)));
169	}
170
171	float varyChannel(float x) {
172	return Math.max(0f, Math.min(1f, (float) (x+random(-0.1, 0.1))));
173	}
174
175	RGB varyColor(RGB rgb) {
176	int s = random(3);
177	if (s == 0)
178	return new RGB(varyChannel(rgb.r), rgb.g, rgb.b);
179	else if (s == 1)
180	return new RGB(rgb.r, varyChannel(rgb.g), rgb.b);
181	else
182	return new RGB(rgb.r, rgb.g, varyChannel(rgb.b));
183	}
184	}
185
186	static class Alternate implements Reproducer {
187	int n = -1;
188	Reproducer[] list;
189
190	Alternate(Reproducer... list) {
191	this.list = list;
192	}
193
194	public Params reproduce(RGBImage original) {
195	++n;
196	return list[n % list.length].reproduce(original);
197	}
198	}
199
200	interface ReproducerMaker {
201	public Reproducer make();
202	}
203
204	static class Gridded extends Params {
205	int w, h;
206	Params[] array;
207
208	Gridded(int w, int h) {
209	this.w = w;
210	this.h = h;
211	array = new Params[w*h];
212	}
213
214	Gridded copy() {
215	Gridded p = new Gridded(w, h);
216	baseClone(p);
217	for (int i = 0; i < w*h; i++)
218	p.array[i] = array[i].copy();
219	return p;
220	}
221
222	public String toString() {
223	StringBuilder buf = new StringBuilder("grid{");
224	for (int i = 0; i < w*h; i++) {
225	if (i != 0)
226	buf.append(", ");
227	buf.append(array[i]);
228	}
229	return buf + "}";
230	}
231
232	public RGBImage render() {
233	int ow = originalImage.getWidth(), oh = originalImage.getHeight();
234	RGBImage img = new RGBImage(ow, oh, Color.white);
235	for (int y = 0; y < h; y++)
236	for (int x = 0; x < w; x++) {
237	int x1 = xow/w, y1 = yoh/h;
238	int x2 = (x+1)ow/w, y2 = (y+1)oh/h;
239	RGBImage part = array[y*w+x].render();
240	main.copy(part, 0, 0, img, x1, y1, part.getWidth(), part.getHeight());
241	}
242	return img;
243	}
244	}
245
246	static class Grid implements Reproducer {
247	int w, h;
248	Reproducer[] bases;
249
250	Grid(ReproducerMaker maker, int w, int h) {
251	this.w = w;
252	this.h = h;
253	bases = new Reproducer[w*h];
254	for (int i = 0; i < w*h; i++)
255	bases[i] = maker.make();
256	}
257
258	RGBImage getGridElement(RGBImage originalImage, int i) {
259	int ow = originalImage.getWidth(), oh = originalImage.getHeight();
260	int y = i / w;
261	int x = i % w;
262	int x1 = xow/w, y1 = yoh/h;
263	int x2 = (x+1)ow/w, y2 = (y+1)oh/h;
264	return originalImage.clip(x1, y1, x2-x1, y2-y1);
265	}
266
267	public Params reproduce(RGBImage original) {
268	Gridded gridded = new Gridded(w, h);
269	gridded.originalImage = original;
270	for (int i = 0; i < w*h; i++) {
271	RGBImage img = getGridElement(original, i);
272	Params p = bases[i].reproduce(img);
273	if (p == null)
274	return null;
275	gridded.array[i] = p;
276	}
277	return gridded;
278	}
279	}
280
281	static class BaseMaker implements ReproducerMaker {
282	public Reproducer make() {
283	return new VaryBest(
284	new Alternate(
285	new RandomSolid(), new RandomVSplit()
286	));
287	}
288	}
289
290	// main reproduce function
291	static Reproducer reproducer =
292	new Grid(new BaseMaker(), 16, 8);
293
294	static Params reproduce(RGBImage original, int ntry) {
295	int w = original.getWidth(), h = original.getHeight();
296	return reproducer.reproduce(original);
297	}
298
299	public static void main(String[] args) {
300	String imageID = "#1000326"; // Bryan Cranston!
301	if (args.length != 0) imageID = args[0];
302	final String _imageID = imageID;
303
304	JFrame frame = new JFrame("A JavaX Frame");
305
306	final ImageSurface imageSurface = new ImageSurface();
307	Component panel = imageSurface;
308
309	frame.add(panel);
310	frame.setBounds(100, 100, 500, 400);
311	frame.setVisible(true);
312	exitOnFrameClose(frame);
313
314	new Thread() {
315	public void run() {
316	originalImage = loadImage(_imageID);
317	originalImage = resizeToWidth(originalImage, 100);
318
319	reproduceOpenEnd(originalImage, imageSurface);
320	}
321	}.start();
322	}
323
324	static void reproduceOpenEnd(RGBImage original, ImageSurface imageSurface) {
325	Params best = null;
326	long lastPrint = 0;
327	for (int ntry = 1; ; ntry++) {
328	if (System.currentTimeMillis() >= lastPrint+1000) {
329	lastPrint = System.currentTimeMillis();
330	if (best == null)
331	System.out.println("Try " + ntry);
332	else {
333	System.out.println("Best: " + best);
334	System.out.println("Try " + ntry + ", best: " + best.getScore());
335	}
336	}
337	Params p = reproduce(original, ntry);
338	if (best == null \|\| p != null && p.getScore() < best.getScore()) {
339	//System.out.println("New best! " + p.getScore());
340	best = p;
341	imageSurface.setImage(p.getImage());
342	}
343
344	if (p != null && p.getScore() == 0.0)
345	break;
346	}
347	}
348
349	static RGB probeRandomPixel(RGBImage image) {
350	int x = (int) (random()*(image.getWidth()-1));
351	int y = (int) (random()*(image.getHeight()-1));
352	return image.getPixel(x, y);
353	}
354
355	static RGB randomColor() {
356	return new RGB(random(), random(), random());
357	}
358
359	static RGBImage resizeToWidth(RGBImage image, int w) {
360	return resize(image, w, (int) ((image.getHeight()*(double) w)/image.getWidth()));
361	}
362
363	public static RGBImage resize(RGBImage image, int w, int h) {
364	if (w == image.getWidth() && h == image.getHeight()) return image;
365
366	int[] pixels = new int[w*h];
367	for (int y = 0; y < h; y++)
368	for (int x = 0; x < w; x++)
369	pixels[yw+x] = image.getInt(ximage.getWidth()/w, y*image.getHeight()/h);
370	return new RGBImage(w, h, pixels);
371	}
372
373	static boolean useImageCache = true;
374	static RGBImage loadImage(String snippetID) {
375	try {
376	File dir = new File(System.getProperty("user.home"), ".tinybrain/image-cache");
377	if (useImageCache) {
378	dir.mkdirs();
379	File file = new File(dir, snippetID + ".png");
380	if (file.exists() && file.length() != 0)
381	try {
382	return new RGBImage(ImageIO.read(file));
383	} catch (Throwable e) {
384	e.printStackTrace();
385	// fall back to loading from sourceforge
386	}
387	}
388
389	String imageURL = getImageURL(parseSnippetID(snippetID));
390	System.err.println("Loading image: " + imageURL);
391	BufferedImage image = ImageIO.read(new URL(imageURL));
392
393	if (useImageCache) {
394	File tempFile = new File(dir, snippetID + ".tmp." + System.currentTimeMillis());
395	ImageIO.write(image, "png", tempFile);
396	tempFile.renameTo(new File(dir, snippetID + ".png"));
397	//Log.info("Cached image.");
398	}
399
400	//Log.info("Loaded image.");
401	return new RGBImage(image);
402	} catch (IOException e) {
403	throw new RuntimeException(e);
404	}
405	}
406
407	static String getImageURL(long snippetID) throws IOException {
408	String url;
409	if (snippetID == 1000010 \|\| snippetID == 1000012)
410	url = "http://tinybrain.de:8080/tb/show-blobimage.php?id=" + snippetID;
411	else
412	url = "http://eyeocr.sourceforge.net/filestore/filestore.php?cmd=serve&file=blob_" + snippetID
413	+ "&contentType=image/png";
414	return url;
415	}
416
417	public static long parseSnippetID(String snippetID) {
418	return Long.parseLong(shortenSnippetID(snippetID));
419	}
420
421	private static String shortenSnippetID(String snippetID) {
422	if (snippetID.startsWith("#"))
423	snippetID = snippetID.substring(1);
424	String httpBlaBla = "http://tinybrain.de/";
425	if (snippetID.startsWith(httpBlaBla))
426	snippetID = snippetID.substring(httpBlaBla.length());
427	return snippetID;
428	}
429
430	static Random _random = new Random();
431	static double random() {
432	return _random.nextInt(100001)/100000.0;
433	}
434
435	static int random(int max) {
436	return _random.nextInt(max);
437	}
438
439	static double random(double min, double max) {
440	return min+random()*(max-min);
441	}
442
443	static void vsplit(RGBImage img, VSplit p) {
444	int w = img.getWidth(), h = img.getHeight();
445	for (int yy = 0; yy < h; yy++)
446	for (int xx = 0; xx < w; xx++) {
447	//double x = ((double) xx)/(w-1);
448	double y = ((double) yy)/(h-1);
449	RGB col = y <= p.splitPoint ? p.col1 : p.col2;
450	img.setPixel(xx, yy, col);
451	}
452	}
453
454	public static double pixelDiff(RGB a, RGB b) {
455	return (Math.abs(a.r-b.r) + Math.abs(a.g-b.g) + Math.abs(a.b-b.b))/3;
456	}
457
458	public static double diff(RGBImage image, RGBImage image2) {
459	int w = image.getWidth(), h = image.getHeight();
460	double sum = 0;
461	for (int y = 0; y < h; y++)
462	for (int x = 0; x < w; x++)
463	sum += pixelDiff(image.getRGB(x, y), image2.getRGB(x, y));
464	return sum/(w*h);
465	}
466
467	public static void copy(RGBImage src, int srcX, int srcY, RGBImage dst, int dstX, int dstY, int w, int h) {
468	for (int y = 0; y < h; y++)
469	for (int x = 0; x < w; x++)
470	dst.setPixel(dstX+x, dstY+y, src.getPixel(srcX+x, srcY+y));
471	}
472	}