Magnetize image (current) [1000550]

!747

import java.awt.*;
import java.awt.image.*;
import javax.imageio.*;
import static java.lang.Math.*;

!image classes
!FrameWithImages

class P { double x, y; *(double *x, double *y) {} }

interface Reproducer {
  public main.Params reproduce(RGBImage original);
}
  
interface ReproducerMaker {
  public Reproducer make();
}

main {
  static Object androidContext;
  static int imageWidth = 200;
  
  !include #1000522 // helper functions for image reproduction
  !include #1000898 // exitOnFrameClose
  
  static double pi = PI;
  
  static double rotate_x(P p, double angle) {
    angle = angle*pi/180;
    return p.x*cos(angle)-p.y*sin(angle);
  }
  
  static double sideshiftlimit = sqrt(2)/2;
    
  static class Magnet extends Params {
    double angle, sideshift;
    RGB col1 = new RGB(Color.black), col2 = new RGB(Color.white);
    
    RGB def(double x, double y) {
      P p = new P(x-0.5, y-0.5);
      x = rotate_x(p, -angle);
      return x < sideshift ? col1 : col2;
    }
    
    Magnet copy() {
      new Magnet p;
      baseClone(p);
      p.sideshift = sideshift;
      p.angle = angle;
      p.col1 = col1;
      p.col2 = col2;
      return p;
    }
    
    public String toString() {
      return "M " + formatDouble(sideshift, 2) + " " + (int) angle + " " + col1 + " " + col2;
    }

    RGBImage render() {
      int w = originalImage.getWidth(), h = originalImage.getHeight();
      RGBImage image = new RGBImage(w, h, Color.white);
      paint(image, this);
      return image;
    }
  }

  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 RandomMagnet implements Reproducer {
    int n = -1;
    public Params reproduce(RGBImage original) {
      ++n;
      new Magnet p;
      p.originalImage = original;
      p.sideshift = random(-sideshiftlimit, sideshiftlimit);
      p.angle = random()*360;
      if (n % 2 == 0) {
        p.col1 = randomColor();
        p.col2 = randomColor();
      } else {
        p.col1 = probeRandomPixel(original);
        p.col2 = 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 Magnet) {
        Magnet n = ((Magnet) p).copy();
        int s = random(3);
        if (s == 0) {
          s = random(2);
          if (s == 0)
            n.sideshift = varySideshift(n.sideshift);
          else {
            //double old = n.angle;
            n.angle = (n.angle+360+random(-5, 5)) % 360;
            //System.out.println("angle: " + formatDouble(old, 1) + " -> " + formatDouble(n.angle, 1));
          }
        } else if (s == 1)
          n.col1 = varyColor(n.col1);
        else
          n.col2 = varyColor(n.col2);
        return n;
      }
      
      return null;
    }
    
    double varySideshift(double sideshift) {
      return max(-sideshiftlimit, min(sideshiftlimit, sideshift+random(-0.1, 0.1)));
    }
    
    double varyN(double x) {
      return Math.max(0, Math.min(1, x+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 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 ReproducerMaker baseMaker = new ReproducerMaker() {
    public Reproducer make() {
      return new VaryBest(new RandomMagnet());
    }
  };
    
  // main reproduce function
  static Reproducer reproducer;

  static String imageID = "#1000326"; // Bryan Cranston!
  static RGBImage originalImage;
  static FrameWithImages fwi;
  static double zoom = 1;
    
  psvm {
    for (int i = 0; i < args.length; i++) {
      String arg = args[i];
      if (isSnippetID(arg))
        imageID = arg;
      else if (arg.equals("zoom"))
        zoom = Double.parseDouble(args[++i]);
      else if (arg.equals("w") || arg.equals("width")) {
        String w = args[++i];
        imageWidth = w.equals("original") ? -1 : Integer.parseInt(w);
      } else
        System.out.println("Unknown argument: " + arg);
    }

    fwi = new FrameWithImages(1);
    fwi.hop();
    
    thread {
      originalImage = loadImage(imageID);
      if (imageWidth < 0)
        imageWidth = originalImage.getWidth();
      else
        originalImage = resizeToWidth(originalImage, imageWidth);
      fwi.setZoom(zoom);
      fwi.setInnerSize(originalImage);
      
      int gx = originalImage.getWidth()/8, gy = originalImage.getHeight()/8;
      reproducer = new Grid(baseMaker, gx, gy);
      
      reproduceOpenEnd(originalImage);
    }
    
    /*
    new Magnet m;
    m.sideshift = -0.2;
    m.angle = 30;
    
    while (true) {
      m.angle = (m.angle+1) % 360;
      //System.out.println("Angle: " + m.angle);
      RGBImage img = new RGBImage(100, 100, Color.gray);
      paint(img, m);
      fwi.setImage(0, img);
    }
    */
  }
  
  
  static void reproduceOpenEnd(RGBImage original) {
    Params best = null;
    long lastPrint = 0, lastN = 0;
    for (long ntry = 1; ; ntry++) {
      long now = System.currentTimeMillis();
      if (now >= lastPrint+1000) {
        long tps = (ntry-lastN)*1000/(now-lastPrint);
        lastPrint = now;
        lastN = ntry;
        String s = "Try " + ntry + "(" + tps + "/s)";
        if (best == null)
          System.out.println(s);
        else {
          //System.out.println("Best: " + best);
          System.out.println(s + ", score: " + formatDouble(best.getScore()*100, 3) + "%");
          //, structure size: " + structureSize(best, Params.class));
        }
      }
      Params p = reproducer.reproduce(original);
      if (best == null || p != null && p.getScore() < best.getScore()) {
        //System.out.println("New best! " + p.getScore());
        best = p;
        fwi.setImage(0, p.getImage());
      }
      
      if (p != null && p.getScore() == 0.0)
        break;
    }
  }
  
  static void paint(RGBImage img, Magnet m) {
    int w = img.getWidth(), h = img.getHeight();
    for (int y = 0; y < h; y++)
      for (int x = 0; x < w; x++) {
        double nx = x/(double)(w-1);
        double ny = y/(double)(h-1);
        img.setPixel(x, y, m.def(nx, ny));
      }
  }
  
}

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Snippet ID:	#1000550
Snippet name:	Magnetize image (current)
Eternal ID of this version:	#1000550/1
Text MD5:	b547d264a0550449b25f102aaac558ae
Transpilation MD5:	29ca80eb49bc360e234d561d4182b960
Author:	stefan
Category:
Type:	JavaX source code
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2015-09-13 15:10:58
Source code size:	10027 bytes / 366 lines
Pitched / IR pitched:	No / Yes
Views / Downloads:	632 / 629
Referenced in:	[show references]

< > BotCompany Repo | #1000550 // Magnetize image (current)

JavaX source code [tags: use-pretranspiled] - run with: x30.jar

Author comment

1	!747
2
3	import java.awt.*;
4	import java.awt.image.*;
5	import javax.imageio.*;
6	import static java.lang.Math.*;
7
8	!image classes
9	!FrameWithImages
10
11	class P { double x, y; (double x, double *y) {} }
12
13	interface Reproducer {
14	public main.Params reproduce(RGBImage original);
15	}
16
17	interface ReproducerMaker {
18	public Reproducer make();
19	}
20
21	main {
22	static Object androidContext;
23	static int imageWidth = 200;
24
25	!include #1000522 // helper functions for image reproduction
26	!include #1000898 // exitOnFrameClose
27
28	static double pi = PI;
29
30	static double rotate_x(P p, double angle) {
31	angle = angle*pi/180;
32	return p.xcos(angle)-p.ysin(angle);
33	}
34
35	static double sideshiftlimit = sqrt(2)/2;
36
37	static class Magnet extends Params {
38	double angle, sideshift;
39	RGB col1 = new RGB(Color.black), col2 = new RGB(Color.white);
40
41	RGB def(double x, double y) {
42	P p = new P(x-0.5, y-0.5);
43	x = rotate_x(p, -angle);
44	return x < sideshift ? col1 : col2;
45	}
46
47	Magnet copy() {
48	new Magnet p;
49	baseClone(p);
50	p.sideshift = sideshift;
51	p.angle = angle;
52	p.col1 = col1;
53	p.col2 = col2;
54	return p;
55	}
56
57	public String toString() {
58	return "M " + formatDouble(sideshift, 2) + " " + (int) angle + " " + col1 + " " + col2;
59	}
60
61	RGBImage render() {
62	int w = originalImage.getWidth(), h = originalImage.getHeight();
63	RGBImage image = new RGBImage(w, h, Color.white);
64	paint(image, this);
65	return image;
66	}
67	}
68
69	static abstract class Params {
70	RGBImage originalImage;
71	abstract RGBImage render();
72	abstract Params copy();
73
74	void baseClone(Params p) {
75	p.originalImage = originalImage;
76	}
77
78	RGBImage rendered;
79	RGBImage getImage() {
80	if (rendered == null)
81	rendered = render();
82	return rendered;
83	}
84
85	double score = 2.0;
86	double getScore() {
87	if (score == 2.0)
88	score = calcScore();
89	return score;
90	}
91
92	double calcScore() {
93	return diff(originalImage, getImage());
94	}
95
96	boolean isBetterThan(Params p) {
97	return getScore() < p.getScore();
98	}
99	}
100
101	static class RandomMagnet implements Reproducer {
102	int n = -1;
103	public Params reproduce(RGBImage original) {
104	++n;
105	new Magnet p;
106	p.originalImage = original;
107	p.sideshift = random(-sideshiftlimit, sideshiftlimit);
108	p.angle = random()*360;
109	if (n % 2 == 0) {
110	p.col1 = randomColor();
111	p.col2 = randomColor();
112	} else {
113	p.col1 = probeRandomPixel(original);
114	p.col2 = probeRandomPixel(original);
115	}
116	return p;
117	}
118	}
119
120	static class VaryBest implements Reproducer {
121	Reproducer base;
122	Params best;
123
124	VaryBest(Reproducer base) {
125	this.base = base;
126	}
127
128	public Params reproduce(RGBImage original) {
129	Params p = base.reproduce(original);
130	if (best == null \|\| p.isBetterThan(best))
131	best = p;
132	Params variation = vary(best);
133	//System.out.println("Best: " + best.getScore() + ", variation: " + variation.getScore());
134	if (variation.isBetterThan(best)) {
135	//System.out.println("Using variation, diff=" + (best.getScore()-variation.getScore()));
136	best = variation;
137	}
138	return best;
139	}
140
141	Params vary(Params p) {
142	if (p instanceof Magnet) {
143	Magnet n = ((Magnet) p).copy();
144	int s = random(3);
145	if (s == 0) {
146	s = random(2);
147	if (s == 0)
148	n.sideshift = varySideshift(n.sideshift);
149	else {
150	//double old = n.angle;
151	n.angle = (n.angle+360+random(-5, 5)) % 360;
152	//System.out.println("angle: " + formatDouble(old, 1) + " -> " + formatDouble(n.angle, 1));
153	}
154	} else if (s == 1)
155	n.col1 = varyColor(n.col1);
156	else
157	n.col2 = varyColor(n.col2);
158	return n;
159	}
160
161	return null;
162	}
163
164	double varySideshift(double sideshift) {
165	return max(-sideshiftlimit, min(sideshiftlimit, sideshift+random(-0.1, 0.1)));
166	}
167
168	double varyN(double x) {
169	return Math.max(0, Math.min(1, x+random(-0.1, 0.1)));
170	}
171
172	float varyChannel(float x) {
173	return Math.max(0f, Math.min(1f, (float) (x+random(-0.1, 0.1))));
174	}
175
176	RGB varyColor(RGB rgb) {
177	int s = random(3);
178	if (s == 0)
179	return new RGB(varyChannel(rgb.r), rgb.g, rgb.b);
180	else if (s == 1)
181	return new RGB(rgb.r, varyChannel(rgb.g), rgb.b);
182	else
183	return new RGB(rgb.r, rgb.g, varyChannel(rgb.b));
184	}
185	}
186
187	static class Gridded extends Params {
188	int w, h;
189	Params[] array;
190
191	Gridded(int w, int h) {
192	this.w = w;
193	this.h = h;
194	array = new Params[w*h];
195	}
196
197	Gridded copy() {
198	Gridded p = new Gridded(w, h);
199	baseClone(p);
200	for (int i = 0; i < w*h; i++)
201	p.array[i] = array[i].copy();
202	return p;
203	}
204
205	public String toString() {
206	StringBuilder buf = new StringBuilder("grid{");
207	for (int i = 0; i < w*h; i++) {
208	if (i != 0)
209	buf.append(", ");
210	buf.append(array[i]);
211	}
212	return buf + "}";
213	}
214
215	public RGBImage render() {
216	int ow = originalImage.getWidth(), oh = originalImage.getHeight();
217	RGBImage img = new RGBImage(ow, oh, Color.white);
218	for (int y = 0; y < h; y++)
219	for (int x = 0; x < w; x++) {
220	int x1 = xow/w, y1 = yoh/h;
221	int x2 = (x+1)ow/w, y2 = (y+1)oh/h;
222	RGBImage part = array[y*w+x].render();
223	main.copy(part, 0, 0, img, x1, y1, part.getWidth(), part.getHeight());
224	}
225	return img;
226	}
227	}
228
229	static class Grid implements Reproducer {
230	int w, h;
231	Reproducer[] bases;
232
233	Grid(ReproducerMaker maker, int w, int h) {
234	this.w = w;
235	this.h = h;
236	bases = new Reproducer[w*h];
237	for (int i = 0; i < w*h; i++)
238	bases[i] = maker.make();
239	}
240
241	RGBImage getGridElement(RGBImage originalImage, int i) {
242	int ow = originalImage.getWidth(), oh = originalImage.getHeight();
243	int y = i / w;
244	int x = i % w;
245	int x1 = xow/w, y1 = yoh/h;
246	int x2 = (x+1)ow/w, y2 = (y+1)oh/h;
247	return originalImage.clip(x1, y1, x2-x1, y2-y1);
248	}
249
250	public Params reproduce(RGBImage original) {
251	Gridded gridded = new Gridded(w, h);
252	gridded.originalImage = original;
253	for (int i = 0; i < w*h; i++) {
254	RGBImage img = getGridElement(original, i);
255	Params p = bases[i].reproduce(img);
256	if (p == null)
257	return null;
258	gridded.array[i] = p;
259	}
260	return gridded;
261	}
262	}
263
264	static ReproducerMaker baseMaker = new ReproducerMaker() {
265	public Reproducer make() {
266	return new VaryBest(new RandomMagnet());
267	}
268	};
269
270	// main reproduce function
271	static Reproducer reproducer;
272
273	static String imageID = "#1000326"; // Bryan Cranston!
274	static RGBImage originalImage;
275	static FrameWithImages fwi;
276	static double zoom = 1;
277
278	psvm {
279	for (int i = 0; i < args.length; i++) {
280	String arg = args[i];
281	if (isSnippetID(arg))
282	imageID = arg;
283	else if (arg.equals("zoom"))
284	zoom = Double.parseDouble(args[++i]);
285	else if (arg.equals("w") \|\| arg.equals("width")) {
286	String w = args[++i];
287	imageWidth = w.equals("original") ? -1 : Integer.parseInt(w);
288	} else
289	System.out.println("Unknown argument: " + arg);
290	}
291
292	fwi = new FrameWithImages(1);
293	fwi.hop();
294
295	thread {
296	originalImage = loadImage(imageID);
297	if (imageWidth < 0)
298	imageWidth = originalImage.getWidth();
299	else
300	originalImage = resizeToWidth(originalImage, imageWidth);
301	fwi.setZoom(zoom);
302	fwi.setInnerSize(originalImage);
303
304	int gx = originalImage.getWidth()/8, gy = originalImage.getHeight()/8;
305	reproducer = new Grid(baseMaker, gx, gy);
306
307	reproduceOpenEnd(originalImage);
308	}
309
310	/*
311	new Magnet m;
312	m.sideshift = -0.2;
313	m.angle = 30;
314
315	while (true) {
316	m.angle = (m.angle+1) % 360;
317	//System.out.println("Angle: " + m.angle);
318	RGBImage img = new RGBImage(100, 100, Color.gray);
319	paint(img, m);
320	fwi.setImage(0, img);
321	}
322	*/
323	}
324
325
326	static void reproduceOpenEnd(RGBImage original) {
327	Params best = null;
328	long lastPrint = 0, lastN = 0;
329	for (long ntry = 1; ; ntry++) {
330	long now = System.currentTimeMillis();
331	if (now >= lastPrint+1000) {
332	long tps = (ntry-lastN)*1000/(now-lastPrint);
333	lastPrint = now;
334	lastN = ntry;
335	String s = "Try " + ntry + "(" + tps + "/s)";
336	if (best == null)
337	System.out.println(s);
338	else {
339	//System.out.println("Best: " + best);
340	System.out.println(s + ", score: " + formatDouble(best.getScore()*100, 3) + "%");
341	//, structure size: " + structureSize(best, Params.class));
342	}
343	}
344	Params p = reproducer.reproduce(original);
345	if (best == null \|\| p != null && p.getScore() < best.getScore()) {
346	//System.out.println("New best! " + p.getScore());
347	best = p;
348	fwi.setImage(0, p.getImage());
349	}
350
351	if (p != null && p.getScore() == 0.0)
352	break;
353	}
354	}
355
356	static void paint(RGBImage img, Magnet m) {
357	int w = img.getWidth(), h = img.getHeight();
358	for (int y = 0; y < h; y++)
359	for (int x = 0; x < w; x++) {
360	double nx = x/(double)(w-1);
361	double ny = y/(double)(h-1);
362	img.setPixel(x, y, m.def(nx, ny));
363	}
364	}
365
366	}