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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 #ifndef SkOpSegment_DEFINE | 7 #ifndef SkOpSegment_DEFINE |
8 #define SkOpSegment_DEFINE | 8 #define SkOpSegment_DEFINE |
9 | 9 |
10 #include "SkOpAngle.h" | 10 #include "SkOpAngle.h" |
11 #include "SkOpSpan.h" | 11 #include "SkOpSpan.h" |
12 #include "SkPathOpsBounds.h" | 12 #include "SkPathOpsBounds.h" |
13 #include "SkPathOpsCurve.h" | 13 #include "SkPathOpsCurve.h" |
| 14 #include "SkTArray.h" |
14 #include "SkTDArray.h" | 15 #include "SkTDArray.h" |
15 | 16 |
16 class SkPathWriter; | 17 class SkPathWriter; |
17 | 18 |
18 class SkOpSegment { | 19 class SkOpSegment { |
19 public: | 20 public: |
20 SkOpSegment() { | 21 SkOpSegment() { |
21 #if DEBUG_DUMP | 22 #if DEBUG_DUMP |
22 fID = ++gSegmentID; | 23 fID = ++gSegmentID; |
23 #endif | 24 #endif |
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223 } | 224 } |
224 | 225 |
225 SkScalar yAtT(int index) const { | 226 SkScalar yAtT(int index) const { |
226 return yAtT(&fTs[index]); | 227 return yAtT(&fTs[index]); |
227 } | 228 } |
228 | 229 |
229 SkScalar yAtT(const SkOpSpan* span) const { | 230 SkScalar yAtT(const SkOpSpan* span) const { |
230 return xyAtT(span).fY; | 231 return xyAtT(span).fY; |
231 } | 232 } |
232 | 233 |
233 bool activeAngle(int index, int* done, SkTDArray<SkOpAngle>* angles); | 234 bool activeAngle(int index, int* done, SkTArray<SkOpAngle, true>* angles); |
234 SkPoint activeLeftTop(bool onlySortable, int* firstT) const; | 235 SkPoint activeLeftTop(bool onlySortable, int* firstT) const; |
235 bool activeOp(int index, int endIndex, int xorMiMask, int xorSuMask, SkPathO
p op); | 236 bool activeOp(int index, int endIndex, int xorMiMask, int xorSuMask, SkPathO
p op); |
236 bool activeOp(int xorMiMask, int xorSuMask, int index, int endIndex, SkPathO
p op, | 237 bool activeOp(int xorMiMask, int xorSuMask, int index, int endIndex, SkPathO
p op, |
237 int* sumMiWinding, int* sumSuWinding, int* maxWinding, int* su
mWinding, | 238 int* sumMiWinding, int* sumSuWinding, int* maxWinding, int* su
mWinding, |
238 int* oppMaxWinding, int* oppSumWinding); | 239 int* oppMaxWinding, int* oppSumWinding); |
239 bool activeWinding(int index, int endIndex); | 240 bool activeWinding(int index, int endIndex); |
240 bool activeWinding(int index, int endIndex, int* maxWinding, int* sumWinding
); | 241 bool activeWinding(int index, int endIndex, int* maxWinding, int* sumWinding
); |
241 void addCubic(const SkPoint pts[4], bool operand, bool evenOdd); | 242 void addCubic(const SkPoint pts[4], bool operand, bool evenOdd); |
242 void addCurveTo(int start, int end, SkPathWriter* path, bool active) const; | 243 void addCurveTo(int start, int end, SkPathWriter* path, bool active) const; |
243 void addLine(const SkPoint pts[2], bool operand, bool evenOdd); | 244 void addLine(const SkPoint pts[2], bool operand, bool evenOdd); |
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287 void markWinding(int index, int winding, int oppWinding); | 288 void markWinding(int index, int winding, int oppWinding); |
288 bool nextCandidate(int* start, int* end) const; | 289 bool nextCandidate(int* start, int* end) const; |
289 int nextExactSpan(int from, int step) const; | 290 int nextExactSpan(int from, int step) const; |
290 int nextSpan(int from, int step) const; | 291 int nextSpan(int from, int step) const; |
291 void setUpWindings(int index, int endIndex, int* sumMiWinding, int* sumSuWin
ding, | 292 void setUpWindings(int index, int endIndex, int* sumMiWinding, int* sumSuWin
ding, |
292 int* maxWinding, int* sumWinding, int* oppMaxWinding, int* oppSumWin
ding); | 293 int* maxWinding, int* sumWinding, int* oppMaxWinding, int* oppSumWin
ding); |
293 enum SortAngleKind { | 294 enum SortAngleKind { |
294 kMustBeOrdered_SortAngleKind, // required for winding calc | 295 kMustBeOrdered_SortAngleKind, // required for winding calc |
295 kMayBeUnordered_SortAngleKind // ok for find top | 296 kMayBeUnordered_SortAngleKind // ok for find top |
296 }; | 297 }; |
297 static bool SortAngles(const SkTDArray<SkOpAngle>& angles, SkTDArray<SkOpAng
le*>* angleList, | 298 static bool SortAngles(const SkTArray<SkOpAngle, true>& angles, |
| 299 SkTArray<SkOpAngle*, true>* angleList, |
298 SortAngleKind ); | 300 SortAngleKind ); |
299 bool subDivide(int start, int end, SkPoint edge[4]) const; | 301 bool subDivide(int start, int end, SkPoint edge[4]) const; |
300 bool subDivide(int start, int end, SkDCubic* result) const; | 302 bool subDivide(int start, int end, SkDCubic* result) const; |
301 void undoneSpan(int* start, int* end); | 303 void undoneSpan(int* start, int* end); |
302 int updateOppWindingReverse(const SkOpAngle* angle) const; | 304 int updateOppWindingReverse(const SkOpAngle* angle) const; |
303 int updateWindingReverse(const SkOpAngle* angle) const; | 305 int updateWindingReverse(const SkOpAngle* angle) const; |
304 static bool UseInnerWinding(int outerWinding, int innerWinding); | 306 static bool UseInnerWinding(int outerWinding, int innerWinding); |
305 int windingAtT(double tHit, int tIndex, bool crossOpp, SkScalar* dx) const; | 307 int windingAtT(double tHit, int tIndex, bool crossOpp, SkScalar* dx) const; |
306 int windSum(const SkOpAngle* angle) const; | 308 int windSum(const SkOpAngle* angle) const; |
307 int windValue(const SkOpAngle* angle) const; | 309 int windValue(const SkOpAngle* angle) const; |
308 | 310 |
309 #if DEBUG_DUMP | 311 #if DEBUG_DUMP |
310 int debugID() const { | 312 int debugID() const { |
311 return fID; | 313 return fID; |
312 } | 314 } |
313 #endif | 315 #endif |
314 #if DEBUG_ACTIVE_SPANS || DEBUG_ACTIVE_SPANS_FIRST_ONLY | 316 #if DEBUG_ACTIVE_SPANS || DEBUG_ACTIVE_SPANS_FIRST_ONLY |
315 void debugShowActiveSpans() const; | 317 void debugShowActiveSpans() const; |
316 #endif | 318 #endif |
317 #if DEBUG_SORT || DEBUG_SWAP_TOP | 319 #if DEBUG_SORT || DEBUG_SWAP_TOP |
318 void debugShowSort(const char* fun, const SkTDArray<SkOpAngle*>& angles, int
first, | 320 void debugShowSort(const char* fun, const SkTArray<SkOpAngle*, true>& angles
, int first, |
319 const int contourWinding, const int oppContourWinding) const; | 321 const int contourWinding, const int oppContourWinding) const; |
320 void debugShowSort(const char* fun, const SkTDArray<SkOpAngle*>& angles, int
first); | 322 void debugShowSort(const char* fun, const SkTArray<SkOpAngle*, true>& angles
, int first); |
321 #endif | 323 #endif |
322 #if DEBUG_CONCIDENT | 324 #if DEBUG_CONCIDENT |
323 void debugShowTs() const; | 325 void debugShowTs() const; |
324 #endif | 326 #endif |
325 #if DEBUG_SHOW_WINDING | 327 #if DEBUG_SHOW_WINDING |
326 int debugShowWindingValues(int slotCount, int ofInterest) const; | 328 int debugShowWindingValues(int slotCount, int ofInterest) const; |
327 #endif | 329 #endif |
328 | 330 |
329 private: | 331 private: |
330 bool activeAngleOther(int index, int* done, SkTDArray<SkOpAngle>* angles); | 332 bool activeAngleOther(int index, int* done, SkTArray<SkOpAngle, true>* angle
s); |
331 bool activeAngleInner(int index, int* done, SkTDArray<SkOpAngle>* angles); | 333 bool activeAngleInner(int index, int* done, SkTArray<SkOpAngle, true>* angle
s); |
332 void addAngle(SkTDArray<SkOpAngle>* angles, int start, int end) const; | 334 void addAngle(SkTArray<SkOpAngle, true>* angles, int start, int end) const; |
333 void addCancelOutsides(double tStart, double oStart, SkOpSegment* other, dou
ble oEnd); | 335 void addCancelOutsides(double tStart, double oStart, SkOpSegment* other, dou
ble oEnd); |
334 void addCoinOutsides(const SkTDArray<double>& outsideTs, SkOpSegment* other,
double oEnd); | 336 void addCoinOutsides(const SkTArray<double, true>& outsideTs, SkOpSegment* o
ther, double oEnd); |
335 void addTwoAngles(int start, int end, SkTDArray<SkOpAngle>* angles) const; | 337 void addTwoAngles(int start, int end, SkTArray<SkOpAngle, true>* angles) con
st; |
336 int advanceCoincidentOther(const SkOpSpan* test, double oEndT, int oIndex); | 338 int advanceCoincidentOther(const SkOpSpan* test, double oEndT, int oIndex); |
337 int advanceCoincidentThis(const SkOpSpan* oTest, bool opp, int index); | 339 int advanceCoincidentThis(const SkOpSpan* oTest, bool opp, int index); |
338 void buildAngles(int index, SkTDArray<SkOpAngle>* angles, bool includeOpp) c
onst; | 340 void buildAngles(int index, SkTArray<SkOpAngle, true>* angles, bool includeO
pp) const; |
339 void buildAnglesInner(int index, SkTDArray<SkOpAngle>* angles) const; | 341 void buildAnglesInner(int index, SkTArray<SkOpAngle, true>* angles) const; |
340 int bumpCoincidentThis(const SkOpSpan& oTest, bool opp, int index, | 342 int bumpCoincidentThis(const SkOpSpan& oTest, bool opp, int index, |
341 SkTDArray<double>* outsideTs); | 343 SkTArray<double, true>* outsideTs); |
342 int bumpCoincidentOther(const SkOpSpan& test, double oEndT, int& oIndex, | 344 int bumpCoincidentOther(const SkOpSpan& test, double oEndT, int& oIndex, |
343 SkTDArray<double>* oOutsideTs); | 345 SkTArray<double, true>* oOutsideTs); |
344 bool bumpSpan(SkOpSpan* span, int windDelta, int oppDelta); | 346 bool bumpSpan(SkOpSpan* span, int windDelta, int oppDelta); |
345 bool clockwise(int tStart, int tEnd) const; | 347 bool clockwise(int tStart, int tEnd) const; |
346 void decrementSpan(SkOpSpan* span); | 348 void decrementSpan(SkOpSpan* span); |
347 bool equalPoints(int greaterTIndex, int lesserTIndex); | 349 bool equalPoints(int greaterTIndex, int lesserTIndex); |
348 int findStartingEdge(const SkTDArray<SkOpAngle*>& sorted, int start, int end
); | 350 int findStartingEdge(const SkTArray<SkOpAngle*, true>& sorted, int start, in
t end); |
349 void init(const SkPoint pts[], SkPath::Verb verb, bool operand, bool evenOdd
); | 351 void init(const SkPoint pts[], SkPath::Verb verb, bool operand, bool evenOdd
); |
350 void matchWindingValue(int tIndex, double t, bool borrowWind); | 352 void matchWindingValue(int tIndex, double t, bool borrowWind); |
351 SkOpSpan* markAndChaseDone(int index, int endIndex, int winding); | 353 SkOpSpan* markAndChaseDone(int index, int endIndex, int winding); |
352 SkOpSpan* markAndChaseDoneBinary(const SkOpAngle* angle, int winding, int op
pWinding); | 354 SkOpSpan* markAndChaseDoneBinary(const SkOpAngle* angle, int winding, int op
pWinding); |
353 SkOpSpan* markAndChaseWinding(const SkOpAngle* angle, const int winding); | 355 SkOpSpan* markAndChaseWinding(const SkOpAngle* angle, const int winding); |
354 SkOpSpan* markAndChaseWinding(int index, int endIndex, int winding, int oppW
inding); | 356 SkOpSpan* markAndChaseWinding(int index, int endIndex, int winding, int oppW
inding); |
355 SkOpSpan* markAngle(int maxWinding, int sumWinding, bool activeAngle, const
SkOpAngle* angle); | 357 SkOpSpan* markAngle(int maxWinding, int sumWinding, bool activeAngle, const
SkOpAngle* angle); |
356 void markDoneBinary(int index, int winding, int oppWinding); | 358 void markDoneBinary(int index, int winding, int oppWinding); |
357 SkOpSpan* markAndChaseDoneUnary(const SkOpAngle* angle, int winding); | 359 SkOpSpan* markAndChaseDoneUnary(const SkOpAngle* angle, int winding); |
358 void markOneDone(const char* funName, int tIndex, int winding); | 360 void markOneDone(const char* funName, int tIndex, int winding); |
359 void markOneDoneBinary(const char* funName, int tIndex); | 361 void markOneDoneBinary(const char* funName, int tIndex); |
360 void markOneDoneBinary(const char* funName, int tIndex, int winding, int opp
Winding); | 362 void markOneDoneBinary(const char* funName, int tIndex, int winding, int opp
Winding); |
361 void markOneDoneUnary(const char* funName, int tIndex); | 363 void markOneDoneUnary(const char* funName, int tIndex); |
362 void markUnsortable(int start, int end); | 364 void markUnsortable(int start, int end); |
363 bool monotonicInY(int tStart, int tEnd) const; | 365 bool monotonicInY(int tStart, int tEnd) const; |
364 bool multipleSpans(int end) const; | 366 bool multipleSpans(int end) const; |
365 SkOpSegment* nextChase(int* index, const int step, int* min, SkOpSpan** last
); | 367 SkOpSegment* nextChase(int* index, const int step, int* min, SkOpSpan** last
); |
366 bool serpentine(int tStart, int tEnd) const; | 368 bool serpentine(int tStart, int tEnd) const; |
367 void subDivideBounds(int start, int end, SkPathOpsBounds* bounds) const; | 369 void subDivideBounds(int start, int end, SkPathOpsBounds* bounds) const; |
368 static void TrackOutside(SkTDArray<double>* outsideTs, double end, double st
art); | 370 static void TrackOutside(SkTArray<double, true>* outsideTs, double end, doub
le start); |
369 int updateOppWinding(int index, int endIndex) const; | 371 int updateOppWinding(int index, int endIndex) const; |
370 int updateOppWinding(const SkOpAngle* angle) const; | 372 int updateOppWinding(const SkOpAngle* angle) const; |
371 int updateWinding(int index, int endIndex) const; | 373 int updateWinding(int index, int endIndex) const; |
372 int updateWinding(const SkOpAngle* angle) const; | 374 int updateWinding(const SkOpAngle* angle) const; |
373 SkOpSpan* verifyOneWinding(const char* funName, int tIndex); | 375 SkOpSpan* verifyOneWinding(const char* funName, int tIndex); |
374 SkOpSpan* verifyOneWindingU(const char* funName, int tIndex); | 376 SkOpSpan* verifyOneWindingU(const char* funName, int tIndex); |
375 int windValueAt(double t) const; | 377 int windValueAt(double t) const; |
376 void zeroSpan(SkOpSpan* span); | 378 void zeroSpan(SkOpSpan* span); |
377 | 379 |
378 #if DEBUG_SWAP_TOP | 380 #if DEBUG_SWAP_TOP |
379 bool controlsContainedByEnds(int tStart, int tEnd) const; | 381 bool controlsContainedByEnds(int tStart, int tEnd) const; |
380 #endif | 382 #endif |
381 #if DEBUG_CONCIDENT | 383 #if DEBUG_CONCIDENT |
382 void debugAddTPair(double t, const SkOpSegment& other, double otherT) const
; | 384 void debugAddTPair(double t, const SkOpSegment& other, double otherT) const
; |
383 #endif | 385 #endif |
384 #if DEBUG_MARK_DONE || DEBUG_UNSORTABLE | 386 #if DEBUG_MARK_DONE || DEBUG_UNSORTABLE |
385 void debugShowNewWinding(const char* fun, const SkOpSpan& span, int winding)
; | 387 void debugShowNewWinding(const char* fun, const SkOpSpan& span, int winding)
; |
386 void debugShowNewWinding(const char* fun, const SkOpSpan& span, int winding,
int oppWinding); | 388 void debugShowNewWinding(const char* fun, const SkOpSpan& span, int winding,
int oppWinding); |
387 #endif | 389 #endif |
388 #if DEBUG_WINDING | 390 #if DEBUG_WINDING |
389 static char as_digit(int value) { | 391 static char as_digit(int value) { |
390 return value < 0 ? '?' : value <= 9 ? '0' + value : '+'; | 392 return value < 0 ? '?' : value <= 9 ? '0' + value : '+'; |
391 } | 393 } |
392 #endif | 394 #endif |
393 | 395 |
394 const SkPoint* fPts; | 396 const SkPoint* fPts; |
395 SkPathOpsBounds fBounds; | 397 SkPathOpsBounds fBounds; |
| 398 // FIXME: can't convert to SkTArray because it uses insert |
396 SkTDArray<SkOpSpan> fTs; // two or more (always includes t=0 t=1) | 399 SkTDArray<SkOpSpan> fTs; // two or more (always includes t=0 t=1) |
397 // OPTIMIZATION: could pack donespans, verb, operand, xor into 1 int-sized v
alue | 400 // OPTIMIZATION: could pack donespans, verb, operand, xor into 1 int-sized v
alue |
398 int fDoneSpans; // quick check that segment is finished | 401 int fDoneSpans; // quick check that segment is finished |
399 // OPTIMIZATION: force the following to be byte-sized | 402 // OPTIMIZATION: force the following to be byte-sized |
400 SkPath::Verb fVerb; | 403 SkPath::Verb fVerb; |
401 bool fOperand; | 404 bool fOperand; |
402 bool fXor; // set if original contour had even-odd fill | 405 bool fXor; // set if original contour had even-odd fill |
403 bool fOppXor; // set if opposite operand had even-odd fill | 406 bool fOppXor; // set if opposite operand had even-odd fill |
404 #if DEBUG_DUMP | 407 #if DEBUG_DUMP |
405 int fID; | 408 int fID; |
406 #endif | 409 #endif |
407 }; | 410 }; |
408 | 411 |
409 #endif | 412 #endif |
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