1 /*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 import java.awt.BasicStroke;
24 import java.awt.Color;
25 import java.awt.Graphics2D;
26 import java.awt.RenderingHints;
27 import java.awt.Shape;
28 import java.awt.Stroke;
29 import java.awt.geom.Ellipse2D;
30 import java.awt.geom.Path2D;
31 import java.awt.geom.PathIterator;
32 import java.awt.image.BufferedImage;
33 import java.awt.image.DataBufferInt;
34 import java.io.File;
35 import java.io.FileOutputStream;
36 import java.io.IOException;
37 import java.util.Arrays;
38 import java.util.Iterator;
39 import java.util.Locale;
40 import java.util.Random;
41 import java.util.concurrent.atomic.AtomicBoolean;
42 import java.util.concurrent.atomic.AtomicInteger;
43 import java.util.logging.Handler;
44 import java.util.logging.LogRecord;
45 import java.util.logging.Logger;
46 import javax.imageio.IIOImage;
47 import javax.imageio.ImageIO;
48 import javax.imageio.ImageWriteParam;
49 import javax.imageio.ImageWriter;
50 import javax.imageio.stream.ImageOutputStream;
51
52 /**
53 * @test
54 * @bug 8191814
55 * @summary Verifies that Marlin rendering generates the same
56 * images with and without clipping optimization with all possible
57 * stroke (cap/join) and/or dashes or fill modes (EO rules)
58 * for paths made of either 9 lines, 4 quads, 2 cubics (random)
59 * Note: Use the argument -slow to run more intensive tests (too much time)
60 *
61 * @run main/othervm/timeout=120 -Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine ClipShapeTest -poly
62 * @run main/othervm/timeout=240 -Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine ClipShapeTest -poly -doDash
63 * @run main/othervm/timeout=120 -Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine ClipShapeTest -cubic
64 * @run main/othervm/timeout=240 -Dsun.java2d.renderer=sun.java2d.marlin.MarlinRenderingEngine ClipShapeTest -cubic -doDash
65 * @run main/othervm/timeout=120 -Dsun.java2d.renderer=sun.java2d.marlin.DMarlinRenderingEngine ClipShapeTest -poly
66 * @run main/othervm/timeout=240 -Dsun.java2d.renderer=sun.java2d.marlin.DMarlinRenderingEngine ClipShapeTest -poly -doDash
67 * @run main/othervm/timeout=120 -Dsun.java2d.renderer=sun.java2d.marlin.DMarlinRenderingEngine ClipShapeTest -cubic
68 * @run main/othervm/timeout=240 -Dsun.java2d.renderer=sun.java2d.marlin.DMarlinRenderingEngine ClipShapeTest -cubic -doDash
69 */
70 public final class ClipShapeTest {
71
72 static boolean TX_SCALE = false;
73 static boolean TX_SHEAR = false;
74
75 static final boolean TEST_STROKER = true;
76 static final boolean TEST_FILLER = true;
77
78 // complementary tests in slow mode:
79 static boolean USE_DASHES = false;
80 static boolean USE_VAR_STROKE = false;
81
82 static int NUM_TESTS = 5000;
83 static final int TESTW = 100;
84 static final int TESTH = 100;
85
86 // shape settings:
87 static ShapeMode SHAPE_MODE = ShapeMode.NINE_LINE_POLYS;
88
89 static int THRESHOLD_DELTA;
90 static long THRESHOLD_NBPIX;
91
92 static final boolean SHAPE_REPEAT = true;
93
94 // dump path on console:
95 static final boolean DUMP_SHAPE = true;
96
97 static final boolean SHOW_DETAILS = false; // disabled
98 static final boolean SHOW_OUTLINE = true;
99 static final boolean SHOW_POINTS = true;
100 static final boolean SHOW_INFO = false;
101
102 static final int MAX_SHOW_FRAMES = 10;
103 static final int MAX_SAVE_FRAMES = 100;
104
105 // use fixed seed to reproduce always same polygons between tests
106 static final boolean FIXED_SEED = false;
107 static final double RAND_SCALE = 3.0;
108 static final double RANDW = TESTW * RAND_SCALE;
109 static final double OFFW = (TESTW - RANDW) / 2.0;
110 static final double RANDH = TESTH * RAND_SCALE;
111 static final double OFFH = (TESTH - RANDH) / 2.0;
112
113 static enum ShapeMode {
114 TWO_CUBICS,
115 FOUR_QUADS,
116 FIVE_LINE_POLYS,
117 NINE_LINE_POLYS,
118 FIFTY_LINE_POLYS,
119 MIXED
120 }
121
122 static final long SEED = 1666133789L;
123 // Fixed seed to avoid any difference between runs:
124 static final Random RANDOM = new Random(SEED);
125
126 static final File OUTPUT_DIR = new File(".");
127
128 static final AtomicBoolean isMarlin = new AtomicBoolean();
129 static final AtomicBoolean isClipRuntime = new AtomicBoolean();
130
131 static {
132 Locale.setDefault(Locale.US);
133
134 // FIRST: Get Marlin runtime state from its log:
135
136 // initialize j.u.l Looger:
137 final Logger log = Logger.getLogger("sun.java2d.marlin");
138 log.addHandler(new Handler() {
139 @Override
140 public void publish(LogRecord record) {
141 final String msg = record.getMessage();
142 if (msg != null) {
143 // last space to avoid matching other settings:
144 if (msg.startsWith("sun.java2d.renderer ")) {
145 isMarlin.set(msg.contains("MarlinRenderingEngine"));
146 }
147 if (msg.startsWith("sun.java2d.renderer.clip.runtime.enable")) {
148 isClipRuntime.set(msg.contains("true"));
149 }
150 }
151
152 final Throwable th = record.getThrown();
153 // detect any Throwable:
154 if (th != null) {
155 System.out.println("Test failed:\n" + record.getMessage());
156 th.printStackTrace(System.out);
157
158 throw new RuntimeException("Test failed: ", th);
159 }
160 }
161
162 @Override
163 public void flush() {
164 }
165
166 @Override
167 public void close() throws SecurityException {
168 }
169 });
170
171 // enable Marlin logging & internal checks:
172 System.setProperty("sun.java2d.renderer.log", "true");
173 System.setProperty("sun.java2d.renderer.useLogger", "true");
174
175 // disable static clipping setting:
176 System.setProperty("sun.java2d.renderer.clip", "false");
177 System.setProperty("sun.java2d.renderer.clip.runtime.enable", "true");
178
179 // enable subdivider:
180 System.setProperty("sun.java2d.renderer.clip.subdivider", "true");
181
182 // disable min length check: always subdivide curves at clip edges
183 System.setProperty("sun.java2d.renderer.clip.subdivider.minLength", "-1");
184
185 // If any curve, increase curve accuracy:
186 // curve length max error:
187 System.setProperty("sun.java2d.renderer.curve_len_err", "1e-4");
188
189 // quad max error:
190 System.setProperty("sun.java2d.renderer.quad_dec_d2", "5e-4");
191
192 // cubic min/max error:
193 System.setProperty("sun.java2d.renderer.cubic_dec_d2", "1e-3");
194 System.setProperty("sun.java2d.renderer.cubic_inc_d1", "1e-4"); // or disabled ~ 1e-6
195 }
196
197 /**
198 * Test
199 * @param args
200 */
201 public static void main(String[] args) {
202 boolean runSlowTests = false;
203
204 for (String arg : args) {
205 if ("-slow".equals(arg)) {
206 System.out.println("slow: enabled.");
207 runSlowTests = true;
208 } else if ("-doScale".equals(arg)) {
209 System.out.println("doScale: enabled.");
210 TX_SCALE = true;
211 } else if ("-doShear".equals(arg)) {
212 System.out.println("doShear: enabled.");
213 TX_SHEAR = true;
214 } else if ("-doDash".equals(arg)) {
215 System.out.println("doDash: enabled.");
216 USE_DASHES = true;
217 } else if ("-doVarStroke".equals(arg)) {
218 System.out.println("doVarStroke: enabled.");
219 USE_VAR_STROKE = true;
220 }
221 // shape mode:
222 else if (arg.equalsIgnoreCase("-poly")) {
223 SHAPE_MODE = ShapeMode.NINE_LINE_POLYS;
224 } else if (arg.equalsIgnoreCase("-bigpoly")) {
225 SHAPE_MODE = ShapeMode.FIFTY_LINE_POLYS;
226 } else if (arg.equalsIgnoreCase("-quad")) {
227 SHAPE_MODE = ShapeMode.FOUR_QUADS;
228 } else if (arg.equalsIgnoreCase("-cubic")) {
229 SHAPE_MODE = ShapeMode.TWO_CUBICS;
230 } else if (arg.equalsIgnoreCase("-mixed")) {
231 SHAPE_MODE = ShapeMode.MIXED;
232 }
233 }
234
235 System.out.println("Shape mode: " + SHAPE_MODE);
236
237 // adjust image comparison thresholds:
238 switch(SHAPE_MODE) {
239 case TWO_CUBICS:
240 // Define uncertainty for curves:
241 THRESHOLD_DELTA = 32; // / 256
242 THRESHOLD_NBPIX = 128; // / 10000
243 break;
244 case FOUR_QUADS:
245 case MIXED:
246 // Define uncertainty for quads:
247 // curve subdivision causes curves to be smaller
248 // then curve offsets are different (more accurate)
249 THRESHOLD_DELTA = 64; // 64 / 256
250 THRESHOLD_NBPIX = 256; // 256 / 10000
251 break;
252 default:
253 // Define uncertainty for lines:
254 // float variant have higher uncertainty
255 THRESHOLD_DELTA = 8;
256 THRESHOLD_NBPIX = 8;
257 }
258
259 System.out.println("THRESHOLD_DELTA: "+THRESHOLD_DELTA);
260 System.out.println("THRESHOLD_NBPIX: "+THRESHOLD_NBPIX);
261
262 if (runSlowTests) {
263 NUM_TESTS = 10000; // or 100000 (very slow)
264 USE_DASHES = true;
265 USE_VAR_STROKE = true;
266 }
267
268 System.out.println("ClipShapeTests: image = " + TESTW + " x " + TESTH);
269
270 int failures = 0;
271 final long start = System.nanoTime();
272 try {
273 // TODO: test affine transforms ?
274
275 if (TEST_STROKER) {
276 final float[][] dashArrays = (USE_DASHES) ?
277 // small
278 // new float[][]{new float[]{1f, 2f}}
279 // normal
280 new float[][]{new float[]{13f, 7f}}
281 // large (prime)
282 // new float[][]{new float[]{41f, 7f}}
283 // none
284 : new float[][]{null};
285
286 System.out.println("dashes: " + Arrays.deepToString(dashArrays));
287
288 final float[] strokeWidths = (USE_VAR_STROKE)
289 ? new float[5] :
290 new float[]{10f};
291
292 int nsw = 0;
293 if (USE_VAR_STROKE) {
294 for (float width = 0.1f; width < 110f; width *= 5f) {
295 strokeWidths[nsw++] = width;
296 }
297 } else {
298 nsw = 1;
299 }
300
301 System.out.println("stroke widths: " + Arrays.toString(strokeWidths));
302
303 // Stroker tests:
304 for (int w = 0; w < nsw; w++) {
305 final float width = strokeWidths[w];
306
307 for (float[] dashes : dashArrays) {
308
309 for (int cap = 0; cap <= 2; cap++) {
310
311 for (int join = 0; join <= 2; join++) {
312
313 failures += paintPaths(new TestSetup(SHAPE_MODE, false, width, cap, join, dashes));
314 failures += paintPaths(new TestSetup(SHAPE_MODE, true, width, cap, join, dashes));
315 }
316 }
317 }
318 }
319 }
320
321 if (TEST_FILLER) {
322 // Filler tests:
323 failures += paintPaths(new TestSetup(SHAPE_MODE, false, Path2D.WIND_NON_ZERO));
324 failures += paintPaths(new TestSetup(SHAPE_MODE, true, Path2D.WIND_NON_ZERO));
325
326 failures += paintPaths(new TestSetup(SHAPE_MODE, false, Path2D.WIND_EVEN_ODD));
327 failures += paintPaths(new TestSetup(SHAPE_MODE, true, Path2D.WIND_EVEN_ODD));
328 }
329 } catch (IOException ioe) {
330 throw new RuntimeException(ioe);
331 }
332 System.out.println("main: duration= " + (1e-6 * (System.nanoTime() - start)) + " ms.");
333
334 if (!isMarlin.get()) {
335 throw new RuntimeException("Marlin renderer not used at runtime !");
336 }
337 if (!isClipRuntime.get()) {
338 throw new RuntimeException("Marlin clipping not enabled at runtime !");
339 }
340 if (failures != 0) {
341 throw new RuntimeException("Clip test failures : " + failures);
342 }
343 }
344
345 static int paintPaths(final TestSetup ts) throws IOException {
346 final long start = System.nanoTime();
347
348 if (FIXED_SEED) {
349 // Reset seed for random numbers:
350 RANDOM.setSeed(SEED);
351 }
352
353 System.out.println("paintPaths: " + NUM_TESTS
354 + " paths (" + SHAPE_MODE + ") - setup: " + ts);
355
356 final boolean fill = !ts.isStroke();
357 final Path2D p2d = new Path2D.Double(ts.windingRule);
358
359 final BufferedImage imgOn = newImage(TESTW, TESTH);
360 final Graphics2D g2dOn = initialize(imgOn, ts);
361
362 final BufferedImage imgOff = newImage(TESTW, TESTH);
363 final Graphics2D g2dOff = initialize(imgOff, ts);
364
365 final BufferedImage imgDiff = newImage(TESTW, TESTH);
366
367 final DiffContext globalCtx = new DiffContext("All tests");
368
369 int nd = 0;
370 try {
371 final DiffContext testCtx = new DiffContext("Test");
372 BufferedImage diffImage;
373
374 for (int n = 0; n < NUM_TESTS; n++) {
375 genShape(p2d, ts);
376
377 // Runtime clip setting OFF:
378 paintShape(p2d, g2dOff, fill, false);
379
380 // Runtime clip setting ON:
381 paintShape(p2d, g2dOn, fill, true);
382
383 /* compute image difference if possible */
384 diffImage = computeDiffImage(testCtx, imgOn, imgOff, imgDiff, globalCtx);
385
386 final String testName = "Setup_" + ts.id + "_test_" + n;
387
388 if (diffImage != null) {
389 nd++;
390
391 final double ratio = (100.0 * testCtx.histPix.count) / testCtx.histAll.count;
392 System.out.println("Diff ratio: " + testName + " = " + trimTo3Digits(ratio) + " %");
393
394 if (nd < MAX_SHOW_FRAMES) {
395 if (SHOW_DETAILS) {
396 paintShapeDetails(g2dOff, p2d);
397 paintShapeDetails(g2dOn, p2d);
398 }
399
400 if (nd < MAX_SAVE_FRAMES) {
401 if (DUMP_SHAPE) {
402 dumpShape(p2d);
403 }
404 saveImage(imgOff, OUTPUT_DIR, testName + "-off.png");
405 saveImage(imgOn, OUTPUT_DIR, testName + "-on.png");
406 saveImage(diffImage, OUTPUT_DIR, testName + "-diff.png");
407 }
408 }
409 }
410 }
411 } finally {
412 g2dOff.dispose();
413 g2dOn.dispose();
414
415 if (nd != 0) {
416 System.out.println("paintPaths: " + NUM_TESTS + " paths - "
417 + "Number of differences = " + nd
418 + " ratio = " + (100f * nd) / NUM_TESTS + " %");
419 }
420
421 globalCtx.dump();
422 }
423 System.out.println("paintPaths: duration= " + (1e-6 * (System.nanoTime() - start)) + " ms.");
424 return nd;
425 }
426
427 private static void paintShape(final Path2D p2d, final Graphics2D g2d,
428 final boolean fill, final boolean clip) {
429 reset(g2d);
430
431 setClip(g2d, clip);
432
433 if (fill) {
434 g2d.fill(p2d);
435 } else {
436 g2d.draw(p2d);
437 }
438 }
439
440 private static Graphics2D initialize(final BufferedImage img,
441 final TestSetup ts) {
442 final Graphics2D g2d = (Graphics2D) img.getGraphics();
443 g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
444 RenderingHints.VALUE_RENDER_QUALITY);
445 g2d.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
446 RenderingHints.VALUE_STROKE_PURE);
447
448 if (ts.isStroke()) {
449 g2d.setStroke(createStroke(ts));
450 }
451 g2d.setColor(Color.GRAY);
452
453 // Test scale
454 if (TX_SCALE) {
455 g2d.scale(1.2, 1.2);
456 }
457 // Test shear
458 if (TX_SHEAR) {
459 g2d.shear(0.1, 0.2);
460 }
461
462 return g2d;
463 }
464
465 private static void reset(final Graphics2D g2d) {
466 // Disable antialiasing:
467 g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
468 RenderingHints.VALUE_ANTIALIAS_OFF);
469 g2d.setBackground(Color.WHITE);
470 g2d.clearRect(0, 0, TESTW, TESTH);
471 }
472
473 private static void setClip(final Graphics2D g2d, final boolean clip) {
474 // Enable antialiasing:
475 g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
476 RenderingHints.VALUE_ANTIALIAS_ON);
477
478 // Enable or Disable clipping:
479 System.setProperty("sun.java2d.renderer.clip.runtime", (clip) ? "true" : "false");
480 }
481
482 static void genShape(final Path2D p2d, final TestSetup ts) {
483 p2d.reset();
484
485 final int end = (SHAPE_REPEAT) ? 2 : 1;
486
487 for (int p = 0; p < end; p++) {
488 p2d.moveTo(randX(), randY());
489
490 switch (ts.shapeMode) {
491 case MIXED:
492 case FIFTY_LINE_POLYS:
493 case NINE_LINE_POLYS:
494 case FIVE_LINE_POLYS:
495 p2d.lineTo(randX(), randY());
496 p2d.lineTo(randX(), randY());
497 p2d.lineTo(randX(), randY());
498 p2d.lineTo(randX(), randY());
499 if (ts.shapeMode == ShapeMode.FIVE_LINE_POLYS) {
500 // And an implicit close makes 5 lines
501 break;
502 }
503 p2d.lineTo(randX(), randY());
504 p2d.lineTo(randX(), randY());
505 p2d.lineTo(randX(), randY());
506 p2d.lineTo(randX(), randY());
507 if (ts.shapeMode == ShapeMode.NINE_LINE_POLYS) {
508 // And an implicit close makes 9 lines
509 break;
510 }
511 if (ts.shapeMode == ShapeMode.FIFTY_LINE_POLYS) {
512 for (int i = 0; i < 41; i++) {
513 p2d.lineTo(randX(), randY());
514 }
515 // And an implicit close makes 50 lines
516 break;
517 }
518 case TWO_CUBICS:
519 p2d.curveTo(randX(), randY(), randX(), randY(), randX(), randY());
520 p2d.curveTo(randX(), randY(), randX(), randY(), randX(), randY());
521 if (ts.shapeMode == ShapeMode.TWO_CUBICS) {
522 break;
523 }
524 case FOUR_QUADS:
525 p2d.quadTo(randX(), randY(), randX(), randY());
526 p2d.quadTo(randX(), randY(), randX(), randY());
527 p2d.quadTo(randX(), randY(), randX(), randY());
528 p2d.quadTo(randX(), randY(), randX(), randY());
529 if (ts.shapeMode == ShapeMode.FOUR_QUADS) {
530 break;
531 }
532 default:
533 }
534
535 if (ts.closed) {
536 p2d.closePath();
537 }
538 }
539 }
540
541 static final float POINT_RADIUS = 2f;
542 static final float LINE_WIDTH = 1f;
543
544 static final Stroke OUTLINE_STROKE = new BasicStroke(LINE_WIDTH);
545 static final int COLOR_ALPHA = 128;
546 static final Color COLOR_MOVETO = new Color(255, 0, 0, COLOR_ALPHA);
547 static final Color COLOR_LINETO_ODD = new Color(0, 0, 255, COLOR_ALPHA);
548 static final Color COLOR_LINETO_EVEN = new Color(0, 255, 0, COLOR_ALPHA);
549
550 static final Ellipse2D.Float ELL_POINT = new Ellipse2D.Float();
551
552 private static void paintShapeDetails(final Graphics2D g2d, final Shape shape) {
553
554 final Stroke oldStroke = g2d.getStroke();
555 final Color oldColor = g2d.getColor();
556
557 setClip(g2d, false);
558
559 if (SHOW_OUTLINE) {
560 g2d.setStroke(OUTLINE_STROKE);
561 g2d.setColor(COLOR_LINETO_ODD);
562 g2d.draw(shape);
563 }
564
565 final float[] coords = new float[6];
566 float px, py;
567
568 int nMove = 0;
569 int nLine = 0;
570 int n = 0;
571
572 for (final PathIterator it = shape.getPathIterator(null); !it.isDone(); it.next()) {
573 int type = it.currentSegment(coords);
574 switch (type) {
575 case PathIterator.SEG_MOVETO:
576 if (SHOW_POINTS) {
577 g2d.setColor(COLOR_MOVETO);
578 }
579 break;
580 case PathIterator.SEG_LINETO:
581 case PathIterator.SEG_QUADTO:
582 case PathIterator.SEG_CUBICTO:
583 if (SHOW_POINTS) {
584 g2d.setColor((nLine % 2 == 0) ? COLOR_LINETO_ODD : COLOR_LINETO_EVEN);
585 }
586 nLine++;
587 break;
588 case PathIterator.SEG_CLOSE:
589 continue;
590 default:
591 System.out.println("unsupported segment type= " + type);
592 continue;
593 }
594 px = coords[0];
595 py = coords[1];
596
597 if (SHOW_INFO) {
598 System.out.println("point[" + (n++) + "|seg=" + type + "]: " + px + " " + py);
599 }
600
601 if (SHOW_POINTS) {
602 ELL_POINT.setFrame(px - POINT_RADIUS, py - POINT_RADIUS,
603 POINT_RADIUS * 2f, POINT_RADIUS * 2f);
604 g2d.fill(ELL_POINT);
605 }
606 }
607 if (SHOW_INFO) {
608 System.out.println("Path moveTo=" + nMove + ", lineTo=" + nLine);
609 System.out.println("--------------------------------------------------");
610 }
611
612 g2d.setStroke(oldStroke);
613 g2d.setColor(oldColor);
614 }
615
616 private static void dumpShape(final Shape shape) {
617 final float[] coords = new float[6];
618
619 for (final PathIterator it = shape.getPathIterator(null); !it.isDone(); it.next()) {
620 final int type = it.currentSegment(coords);
621 switch (type) {
622 case PathIterator.SEG_MOVETO:
623 System.out.println("p2d.moveTo(" + coords[0] + ", " + coords[1] + ");");
624 break;
625 case PathIterator.SEG_LINETO:
626 System.out.println("p2d.lineTo(" + coords[0] + ", " + coords[1] + ");");
627 break;
628 case PathIterator.SEG_QUADTO:
629 System.out.println("p2d.quadTo(" + coords[0] + ", " + coords[1] + ", " + coords[2] + ", " + coords[3] + ");");
630 break;
631 case PathIterator.SEG_CUBICTO:
632 System.out.println("p2d.curveTo(" + coords[0] + ", " + coords[1] + ", " + coords[2] + ", " + coords[3] + ", " + coords[4] + ", " + coords[5] + ");");
633 break;
634 case PathIterator.SEG_CLOSE:
635 System.out.println("p2d.closePath();");
636 break;
637 default:
638 System.out.println("// Unsupported segment type= " + type);
639 }
640 }
641 System.out.println("--------------------------------------------------");
642 }
643
644 static double randX() {
645 return RANDOM.nextDouble() * RANDW + OFFW;
646 }
647
648 static double randY() {
649 return RANDOM.nextDouble() * RANDH + OFFH;
650 }
651
652 private static BasicStroke createStroke(final TestSetup ts) {
653 return new BasicStroke(ts.strokeWidth, ts.strokeCap, ts.strokeJoin, 10.0f, ts.dashes, 0.0f);
654 }
655
656 private final static class TestSetup {
657
658 static final AtomicInteger COUNT = new AtomicInteger();
659
660 final int id;
661 final ShapeMode shapeMode;
662 final boolean closed;
663 // stroke
664 final float strokeWidth;
665 final int strokeCap;
666 final int strokeJoin;
667 final float[] dashes;
668 // fill
669 final int windingRule;
670
671 TestSetup(ShapeMode shapeMode, final boolean closed,
672 final float strokeWidth, final int strokeCap, final int strokeJoin, final float[] dashes) {
673 this.id = COUNT.incrementAndGet();
674 this.shapeMode = shapeMode;
675 this.closed = closed;
676 this.strokeWidth = strokeWidth;
677 this.strokeCap = strokeCap;
678 this.strokeJoin = strokeJoin;
679 this.dashes = dashes;
680 this.windingRule = Path2D.WIND_NON_ZERO;
681 }
682
683 TestSetup(ShapeMode shapeMode, final boolean closed, final int windingRule) {
684 this.id = COUNT.incrementAndGet();
685 this.shapeMode = shapeMode;
686 this.closed = closed;
687 this.strokeWidth = 0f;
688 this.strokeCap = this.strokeJoin = -1; // invalid
689 this.dashes = null;
690 this.windingRule = windingRule;
691 }
692
693 boolean isStroke() {
694 return this.strokeWidth > 0f;
695 }
696
697 @Override
698 public String toString() {
699 if (isStroke()) {
700 return "TestSetup{id=" + id + ", shapeMode=" + shapeMode + ", closed=" + closed
701 + ", strokeWidth=" + strokeWidth + ", strokeCap=" + getCap(strokeCap) + ", strokeJoin=" + getJoin(strokeJoin)
702 + ((dashes != null) ? ", dashes: " + Arrays.toString(dashes) : "")
703 + '}';
704 }
705 return "TestSetup{id=" + id + ", shapeMode=" + shapeMode + ", closed=" + closed
706 + ", fill"
707 + ", windingRule=" + getWindingRule(windingRule) + '}';
708 }
709
710 private static String getCap(final int cap) {
711 switch (cap) {
712 case BasicStroke.CAP_BUTT:
713 return "CAP_BUTT";
714 case BasicStroke.CAP_ROUND:
715 return "CAP_ROUND";
716 case BasicStroke.CAP_SQUARE:
717 return "CAP_SQUARE";
718 default:
719 return "";
720 }
721
722 }
723
724 private static String getJoin(final int join) {
725 switch (join) {
726 case BasicStroke.JOIN_MITER:
727 return "JOIN_MITER";
728 case BasicStroke.JOIN_ROUND:
729 return "JOIN_ROUND";
730 case BasicStroke.JOIN_BEVEL:
731 return "JOIN_BEVEL";
732 default:
733 return "";
734 }
735
736 }
737
738 private static String getWindingRule(final int rule) {
739 switch (rule) {
740 case PathIterator.WIND_EVEN_ODD:
741 return "WIND_EVEN_ODD";
742 case PathIterator.WIND_NON_ZERO:
743 return "WIND_NON_ZERO";
744 default:
745 return "";
746 }
747 }
748 }
749
750 // --- utilities ---
751 private static final int DCM_ALPHA_MASK = 0xff000000;
752
753 public static BufferedImage newImage(final int w, final int h) {
754 return new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB_PRE);
755 }
756
757 public static BufferedImage computeDiffImage(final DiffContext localCtx,
758 final BufferedImage tstImage,
759 final BufferedImage refImage,
760 final BufferedImage diffImage,
761 final DiffContext globalCtx) {
762
763 final int[] aRefPix = ((DataBufferInt) refImage.getRaster().getDataBuffer()).getData();
764 final int[] aTstPix = ((DataBufferInt) tstImage.getRaster().getDataBuffer()).getData();
765 final int[] aDifPix = ((DataBufferInt) diffImage.getRaster().getDataBuffer()).getData();
766
767 // reset local diff context:
768 localCtx.reset();
769
770 int ref, tst, dg, v;
771 for (int i = 0, len = aRefPix.length; i < len; i++) {
772 ref = aRefPix[i];
773 tst = aTstPix[i];
774
775 // grayscale diff:
776 dg = (r(ref) + g(ref) + b(ref)) - (r(tst) + g(tst) + b(tst));
777
778 // max difference on grayscale values:
779 v = (int) Math.ceil(Math.abs(dg / 3.0));
780
781 // TODO: count warnings
782 if (v <= THRESHOLD_DELTA) {
783 aDifPix[i] = 0;
784 } else {
785 aDifPix[i] = toInt(v, v, v);
786
787 localCtx.add(v);
788 }
789 globalCtx.add(v);
790 }
791
792 if (!localCtx.isDiff() || (localCtx.histPix.count <= THRESHOLD_NBPIX)) {
793 return null;
794 }
795
796 localCtx.dump();
797
798 return diffImage;
799 }
800
801 static void saveImage(final BufferedImage image, final File resDirectory, final String imageFileName) throws IOException {
802 final Iterator<ImageWriter> itWriters = ImageIO.getImageWritersByFormatName("PNG");
803 if (itWriters.hasNext()) {
804 final ImageWriter writer = itWriters.next();
805
806 final ImageWriteParam writerParams = writer.getDefaultWriteParam();
807 writerParams.setProgressiveMode(ImageWriteParam.MODE_DISABLED);
808
809 final File imgFile = new File(resDirectory, imageFileName);
810
811 if (!imgFile.exists() || imgFile.canWrite()) {
812 System.out.println("saveImage: saving image as PNG [" + imgFile + "]...");
813 imgFile.delete();
814
815 // disable cache in temporary files:
816 ImageIO.setUseCache(false);
817
818 final long start = System.nanoTime();
819
820 // PNG uses already buffering:
821 final ImageOutputStream imgOutStream = ImageIO.createImageOutputStream(new FileOutputStream(imgFile));
822
823 writer.setOutput(imgOutStream);
824 try {
825 writer.write(null, new IIOImage(image, null, null), writerParams);
826 } finally {
827 imgOutStream.close();
828
829 final long time = System.nanoTime() - start;
830 System.out.println("saveImage: duration= " + (time / 1000000l) + " ms.");
831 }
832 }
833 }
834 }
835
836 static int r(final int v) {
837 return (v >> 16 & 0xff);
838 }
839
840 static int g(final int v) {
841 return (v >> 8 & 0xff);
842 }
843
844 static int b(final int v) {
845 return (v & 0xff);
846 }
847
848 static int clamp127(final int v) {
849 return (v < 128) ? (v > -127 ? (v + 127) : 0) : 255;
850 }
851
852 static int toInt(final int r, final int g, final int b) {
853 return DCM_ALPHA_MASK | (r << 16) | (g << 8) | b;
854 }
855
856 /* stats */
857 static class StatInteger {
858
859 public final String name;
860 public long count = 0l;
861 public long sum = 0l;
862 public long min = Integer.MAX_VALUE;
863 public long max = Integer.MIN_VALUE;
864
865 StatInteger(String name) {
866 this.name = name;
867 }
868
869 void reset() {
870 count = 0l;
871 sum = 0l;
872 min = Integer.MAX_VALUE;
873 max = Integer.MIN_VALUE;
874 }
875
876 void add(int val) {
877 count++;
878 sum += val;
879 if (val < min) {
880 min = val;
881 }
882 if (val > max) {
883 max = val;
884 }
885 }
886
887 void add(long val) {
888 count++;
889 sum += val;
890 if (val < min) {
891 min = val;
892 }
893 if (val > max) {
894 max = val;
895 }
896 }
897
898 public final double average() {
899 return ((double) sum) / count;
900 }
901
902 @Override
903 public String toString() {
904 final StringBuilder sb = new StringBuilder(128);
905 toString(sb);
906 return sb.toString();
907 }
908
909 public final StringBuilder toString(final StringBuilder sb) {
910 sb.append(name).append("[n: ").append(count);
911 sb.append("] sum: ").append(sum).append(" avg: ").append(trimTo3Digits(average()));
912 sb.append(" [").append(min).append(" | ").append(max).append("]");
913 return sb;
914 }
915
916 }
917
918 final static class Histogram extends StatInteger {
919
920 static final int BUCKET = 2;
921 static final int MAX = 20;
922 static final int LAST = MAX - 1;
923 static final int[] STEPS = new int[MAX];
924
925 static {
926 STEPS[0] = 0;
927 STEPS[1] = 1;
928
929 for (int i = 2; i < MAX; i++) {
930 STEPS[i] = STEPS[i - 1] * BUCKET;
931 }
932 // System.out.println("Histogram.STEPS = " + Arrays.toString(STEPS));
933 }
934
935 static int bucket(int val) {
936 for (int i = 1; i < MAX; i++) {
937 if (val < STEPS[i]) {
938 return i - 1;
939 }
940 }
941 return LAST;
942 }
943
944 private final StatInteger[] stats = new StatInteger[MAX];
945
946 public Histogram(String name) {
947 super(name);
948 for (int i = 0; i < MAX; i++) {
949 stats[i] = new StatInteger(String.format("%5s .. %5s", STEPS[i], ((i + 1 < MAX) ? STEPS[i + 1] : "~")));
950 }
951 }
952
953 @Override
954 final void reset() {
955 super.reset();
956 for (int i = 0; i < MAX; i++) {
957 stats[i].reset();
958 }
959 }
960
961 @Override
962 final void add(int val) {
963 super.add(val);
964 stats[bucket(val)].add(val);
965 }
966
967 @Override
968 final void add(long val) {
969 add((int) val);
970 }
971
972 @Override
973 public final String toString() {
974 final StringBuilder sb = new StringBuilder(2048);
975 super.toString(sb).append(" { ");
976
977 for (int i = 0; i < MAX; i++) {
978 if (stats[i].count != 0l) {
979 sb.append("\n ").append(stats[i].toString());
980 }
981 }
982
983 return sb.append(" }").toString();
984 }
985 }
986
987 /**
988 * Adjust the given double value to keep only 3 decimal digits
989 * @param value value to adjust
990 * @return double value with only 3 decimal digits
991 */
992 static double trimTo3Digits(final double value) {
993 return ((long) (1e3d * value)) / 1e3d;
994 }
995
996 static final class DiffContext {
997
998 public final Histogram histAll;
999 public final Histogram histPix;
1000
1001 DiffContext(String name) {
1002 histAll = new Histogram("All Pixels [" + name + "]");
1003 histPix = new Histogram("Diff Pixels [" + name + "]");
1004 }
1005
1006 void reset() {
1007 histAll.reset();
1008 histPix.reset();
1009 }
1010
1011 void dump() {
1012 if (isDiff()) {
1013 System.out.println("Differences [" + histAll.name + "]:");
1014 System.out.println("Total [all pixels]:\n" + histAll.toString());
1015 System.out.println("Total [different pixels]:\n" + histPix.toString());
1016 } else {
1017 System.out.println("No difference for [" + histAll.name + "].");
1018 }
1019 }
1020
1021 void add(int val) {
1022 histAll.add(val);
1023 if (val != 0) {
1024 histPix.add(val);
1025 }
1026 }
1027
1028 boolean isDiff() {
1029 return histAll.sum != 0l;
1030 }
1031 }
1032 }