caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | #ifndef SkOpContour_DEFINED |
| 8 | #define SkOpContour_DEFINED |
| 9 | |
| 10 | #include "SkOpSegment.h" |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 11 | #include "SkTDArray.h" |
| 12 | #include "SkTSort.h" |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 13 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 14 | enum class SkOpRayDir; |
| 15 | struct SkOpRayHit; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 16 | class SkPathWriter; |
| 17 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 18 | class SkOpContour { |
| 19 | public: |
| 20 | SkOpContour() { |
| 21 | reset(); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 22 | } |
| 23 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 24 | bool operator<(const SkOpContour& rh) const { |
| 25 | return fBounds.fTop == rh.fBounds.fTop |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 26 | ? fBounds.fLeft < rh.fBounds.fLeft |
| 27 | : fBounds.fTop < rh.fBounds.fTop; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 28 | } |
| 29 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 30 | void addConic(SkPoint pts[3], SkScalar weight) { |
| 31 | appendSegment().addConic(pts, weight, this); |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 32 | } |
| 33 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 34 | void addCubic(SkPoint pts[4]) { |
| 35 | appendSegment().addCubic(pts, this); |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 36 | } |
| 37 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 38 | SkOpSegment* addLine(SkPoint pts[2]) { |
caryclark | bb51f4a | 2016-08-23 07:38:48 -0700 | [diff] [blame] | 39 | SkASSERT(pts[0] != pts[1]); |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 40 | return appendSegment().addLine(pts, this); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 41 | } |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 42 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 43 | void addQuad(SkPoint pts[3]) { |
| 44 | appendSegment().addQuad(pts, this); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 45 | } |
| 46 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 47 | SkOpSegment& appendSegment() { |
Herb Derby | ecc364c | 2017-04-19 15:09:48 -0400 | [diff] [blame] | 48 | SkOpSegment* result = fCount++ ? this->globalState()->allocator()->make<SkOpSegment>() |
| 49 | : &fHead; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 50 | result->setPrev(fTail); |
| 51 | if (fTail) { |
| 52 | fTail->setNext(result); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 53 | } |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 54 | fTail = result; |
| 55 | return *result; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 56 | } |
| 57 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 58 | const SkPathOpsBounds& bounds() const { |
| 59 | return fBounds; |
| 60 | } |
| 61 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 62 | void calcAngles() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 63 | SkASSERT(fCount > 0); |
| 64 | SkOpSegment* segment = &fHead; |
| 65 | do { |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 66 | segment->calcAngles(); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 67 | } while ((segment = segment->next())); |
caryclark@google.com | fa2aeee | 2013-07-15 13:29:13 +0000 | [diff] [blame] | 68 | } |
| 69 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 70 | void complete() { |
| 71 | setBounds(); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 72 | } |
| 73 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 74 | int count() const { |
| 75 | return fCount; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 76 | } |
| 77 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 78 | int debugID() const { |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 79 | return SkDEBUGRELEASE(fID, -1); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | int debugIndent() const { |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 83 | return SkDEBUGRELEASE(fDebugIndent, 0); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 84 | } |
| 85 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 86 | |
| 87 | const SkOpAngle* debugAngle(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 88 | return SkDEBUGRELEASE(this->globalState()->debugAngle(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 89 | } |
| 90 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 91 | const SkOpCoincidence* debugCoincidence() const { |
| 92 | return this->globalState()->coincidence(); |
| 93 | } |
| 94 | |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame] | 95 | #if DEBUG_COIN |
| 96 | void debugCheckHealth(SkPathOpsDebug::GlitchLog* ) const; |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 97 | #endif |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 98 | |
caryclark | 30b9fdd | 2016-08-31 14:36:29 -0700 | [diff] [blame] | 99 | SkOpContour* debugContour(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 100 | return SkDEBUGRELEASE(this->globalState()->debugContour(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 101 | } |
| 102 | |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame] | 103 | #if DEBUG_COIN |
| 104 | void debugMissingCoincidence(SkPathOpsDebug::GlitchLog* log) const; |
| 105 | void debugMoveMultiples(SkPathOpsDebug::GlitchLog* ) const; |
| 106 | void debugMoveNearby(SkPathOpsDebug::GlitchLog* log) const; |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 107 | #endif |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 108 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 109 | const SkOpPtT* debugPtT(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 110 | return SkDEBUGRELEASE(this->globalState()->debugPtT(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 111 | } |
| 112 | |
| 113 | const SkOpSegment* debugSegment(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 114 | return SkDEBUGRELEASE(this->globalState()->debugSegment(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 115 | } |
| 116 | |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame] | 117 | #if DEBUG_ACTIVE_SPANS |
Cary Clark | ff11428 | 2016-12-14 11:56:16 -0500 | [diff] [blame] | 118 | void debugShowActiveSpans(SkString* str) { |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame] | 119 | SkOpSegment* segment = &fHead; |
| 120 | do { |
Cary Clark | ff11428 | 2016-12-14 11:56:16 -0500 | [diff] [blame] | 121 | segment->debugShowActiveSpans(str); |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame] | 122 | } while ((segment = segment->next())); |
| 123 | } |
| 124 | #endif |
| 125 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 126 | const SkOpSpanBase* debugSpan(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 127 | return SkDEBUGRELEASE(this->globalState()->debugSpan(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | SkOpGlobalState* globalState() const { |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 131 | return fState; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | void debugValidate() const { |
| 135 | #if DEBUG_VALIDATE |
| 136 | const SkOpSegment* segment = &fHead; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 137 | const SkOpSegment* prior = nullptr; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 138 | do { |
| 139 | segment->debugValidate(); |
| 140 | SkASSERT(segment->prev() == prior); |
| 141 | prior = segment; |
| 142 | } while ((segment = segment->next())); |
| 143 | SkASSERT(prior == fTail); |
| 144 | #endif |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 145 | } |
| 146 | |
| 147 | bool done() const { |
| 148 | return fDone; |
| 149 | } |
| 150 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 151 | void dump() const; |
| 152 | void dumpAll() const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 153 | void dumpAngles() const; |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 154 | void dumpContours() const; |
| 155 | void dumpContoursAll() const; |
| 156 | void dumpContoursAngles() const; |
| 157 | void dumpContoursPts() const; |
| 158 | void dumpContoursPt(int segmentID) const; |
| 159 | void dumpContoursSegment(int segmentID) const; |
| 160 | void dumpContoursSpan(int segmentID) const; |
| 161 | void dumpContoursSpans() const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 162 | void dumpPt(int ) const; |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 163 | void dumpPts(const char* prefix = "seg") const; |
| 164 | void dumpPtsX(const char* prefix) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 165 | void dumpSegment(int ) const; |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 166 | void dumpSegments(const char* prefix = "seg", SkPathOp op = (SkPathOp) -1) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 167 | void dumpSpan(int ) const; |
| 168 | void dumpSpans() const; |
| 169 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 170 | const SkPoint& end() const { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 171 | return fTail->pts()[SkPathOpsVerbToPoints(fTail->verb())]; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 172 | } |
| 173 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 174 | SkOpSpan* findSortableTop(SkOpContour* ); |
| 175 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 176 | SkOpSegment* first() { |
| 177 | SkASSERT(fCount > 0); |
| 178 | return &fHead; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 179 | } |
| 180 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 181 | const SkOpSegment* first() const { |
| 182 | SkASSERT(fCount > 0); |
| 183 | return &fHead; |
caryclark | dac1d17 | 2014-06-17 05:15:38 -0700 | [diff] [blame] | 184 | } |
| 185 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 186 | void indentDump() const { |
| 187 | SkDEBUGCODE(fDebugIndent += 2); |
caryclark@google.com | a2bbc6e | 2013-11-01 17:36:03 +0000 | [diff] [blame] | 188 | } |
| 189 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 190 | void init(SkOpGlobalState* globalState, bool operand, bool isXor) { |
| 191 | fState = globalState; |
| 192 | fOperand = operand; |
| 193 | fXor = isXor; |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 194 | SkDEBUGCODE(fID = globalState->nextContourID()); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 195 | } |
| 196 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 197 | int isCcw() const { |
| 198 | return fCcw; |
| 199 | } |
| 200 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 201 | bool isXor() const { |
| 202 | return fXor; |
| 203 | } |
| 204 | |
caryclark | eed356d | 2016-09-14 07:18:20 -0700 | [diff] [blame] | 205 | void joinSegments() { |
| 206 | SkOpSegment* segment = &fHead; |
| 207 | SkOpSegment* next; |
| 208 | do { |
| 209 | next = segment->next(); |
| 210 | segment->joinEnds(next ? next : &fHead); |
| 211 | } while ((segment = next)); |
| 212 | } |
| 213 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 214 | void markAllDone() { |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 215 | SkOpSegment* segment = &fHead; |
| 216 | do { |
| 217 | segment->markAllDone(); |
| 218 | } while ((segment = segment->next())); |
| 219 | } |
| 220 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 221 | // Please keep this aligned with debugMissingCoincidence() |
| 222 | bool missingCoincidence() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 223 | SkASSERT(fCount > 0); |
| 224 | SkOpSegment* segment = &fHead; |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 225 | bool result = false; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 226 | do { |
Cary Clark | e47ae29 | 2016-10-05 08:51:39 -0400 | [diff] [blame] | 227 | if (segment->missingCoincidence()) { |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 228 | result = true; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 229 | } |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 230 | segment = segment->next(); |
| 231 | } while (segment); |
| 232 | return result; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 233 | } |
| 234 | |
caryclark | 08bc848 | 2015-04-24 09:08:57 -0700 | [diff] [blame] | 235 | bool moveMultiples() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 236 | SkASSERT(fCount > 0); |
| 237 | SkOpSegment* segment = &fHead; |
| 238 | do { |
caryclark | d78c088 | 2016-02-24 09:03:07 -0800 | [diff] [blame] | 239 | if (!segment->moveMultiples()) { |
| 240 | return false; |
| 241 | } |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 242 | } while ((segment = segment->next())); |
| 243 | return true; |
| 244 | } |
| 245 | |
Cary Clark | 28da283 | 2017-03-21 10:30:50 -0400 | [diff] [blame] | 246 | bool moveNearby() { |
caryclark | 08bc848 | 2015-04-24 09:08:57 -0700 | [diff] [blame] | 247 | SkASSERT(fCount > 0); |
| 248 | SkOpSegment* segment = &fHead; |
| 249 | do { |
Cary Clark | 28da283 | 2017-03-21 10:30:50 -0400 | [diff] [blame] | 250 | if (!segment->moveNearby()) { |
| 251 | return false; |
| 252 | } |
caryclark | 08bc848 | 2015-04-24 09:08:57 -0700 | [diff] [blame] | 253 | } while ((segment = segment->next())); |
Cary Clark | 28da283 | 2017-03-21 10:30:50 -0400 | [diff] [blame] | 254 | return true; |
caryclark | 08bc848 | 2015-04-24 09:08:57 -0700 | [diff] [blame] | 255 | } |
| 256 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 257 | SkOpContour* next() { |
| 258 | return fNext; |
| 259 | } |
| 260 | |
| 261 | const SkOpContour* next() const { |
| 262 | return fNext; |
| 263 | } |
| 264 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 265 | bool operand() const { |
| 266 | return fOperand; |
| 267 | } |
| 268 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 269 | bool oppXor() const { |
| 270 | return fOppXor; |
| 271 | } |
| 272 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 273 | void outdentDump() const { |
| 274 | SkDEBUGCODE(fDebugIndent -= 2); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 275 | } |
| 276 | |
Herb Derby | c3cc5fa | 2017-03-07 11:11:47 -0500 | [diff] [blame] | 277 | void rayCheck(const SkOpRayHit& base, SkOpRayDir dir, SkOpRayHit** hits, SkArenaAlloc*); |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 278 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 279 | void reset() { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 280 | fTail = nullptr; |
| 281 | fNext = nullptr; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 282 | fCount = 0; |
| 283 | fDone = false; |
| 284 | SkDEBUGCODE(fBounds.set(SK_ScalarMax, SK_ScalarMax, SK_ScalarMin, SK_ScalarMin)); |
| 285 | SkDEBUGCODE(fFirstSorted = -1); |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 286 | SkDEBUGCODE(fDebugIndent = 0); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 287 | } |
| 288 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 289 | void resetReverse() { |
| 290 | SkOpContour* next = this; |
| 291 | do { |
Cary Clark | 9c16d1e | 2016-12-19 11:16:36 -0500 | [diff] [blame] | 292 | if (!next->count()) { |
| 293 | continue; |
| 294 | } |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 295 | next->fCcw = -1; |
| 296 | next->fReverse = false; |
| 297 | } while ((next = next->next())); |
| 298 | } |
| 299 | |
| 300 | bool reversed() const { |
| 301 | return fReverse; |
| 302 | } |
| 303 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 304 | void setBounds() { |
| 305 | SkASSERT(fCount > 0); |
| 306 | const SkOpSegment* segment = &fHead; |
| 307 | fBounds = segment->bounds(); |
| 308 | while ((segment = segment->next())) { |
| 309 | fBounds.add(segment->bounds()); |
| 310 | } |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 311 | } |
| 312 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 313 | void setCcw(int ccw) { |
| 314 | fCcw = ccw; |
| 315 | } |
| 316 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 317 | void setGlobalState(SkOpGlobalState* state) { |
| 318 | fState = state; |
| 319 | } |
| 320 | |
| 321 | void setNext(SkOpContour* contour) { |
| 322 | // SkASSERT(!fNext == !!contour); |
| 323 | fNext = contour; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | void setOperand(bool isOp) { |
| 327 | fOperand = isOp; |
| 328 | } |
| 329 | |
| 330 | void setOppXor(bool isOppXor) { |
| 331 | fOppXor = isOppXor; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 332 | } |
| 333 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 334 | void setReverse() { |
| 335 | fReverse = true; |
| 336 | } |
| 337 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 338 | void setXor(bool isXor) { |
| 339 | fXor = isXor; |
| 340 | } |
| 341 | |
caryclark | b36a3cd | 2016-10-18 07:59:44 -0700 | [diff] [blame] | 342 | bool sortAngles() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 343 | SkASSERT(fCount > 0); |
| 344 | SkOpSegment* segment = &fHead; |
| 345 | do { |
caryclark | b36a3cd | 2016-10-18 07:59:44 -0700 | [diff] [blame] | 346 | FAIL_IF(!segment->sortAngles()); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 347 | } while ((segment = segment->next())); |
caryclark | b36a3cd | 2016-10-18 07:59:44 -0700 | [diff] [blame] | 348 | return true; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 349 | } |
| 350 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 351 | const SkPoint& start() const { |
| 352 | return fHead.pts()[0]; |
| 353 | } |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 354 | |
| 355 | void toPartialBackward(SkPathWriter* path) const { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 356 | const SkOpSegment* segment = fTail; |
| 357 | do { |
caryclark | ef784fb | 2015-10-30 12:03:06 -0700 | [diff] [blame] | 358 | SkAssertResult(segment->addCurveTo(segment->tail(), segment->head(), path)); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 359 | } while ((segment = segment->prev())); |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | void toPartialForward(SkPathWriter* path) const { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 363 | const SkOpSegment* segment = &fHead; |
| 364 | do { |
caryclark | ef784fb | 2015-10-30 12:03:06 -0700 | [diff] [blame] | 365 | SkAssertResult(segment->addCurveTo(segment->head(), segment->tail(), path)); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 366 | } while ((segment = segment->next())); |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 367 | } |
| 368 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 369 | void toReversePath(SkPathWriter* path) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 370 | void toPath(SkPathWriter* path) const; |
Cary Clark | ab2d73b | 2016-12-16 17:17:25 -0500 | [diff] [blame] | 371 | SkOpSpan* undoneSpan(); |
commit-bot@chromium.org | 4431e77 | 2014-04-14 17:08:59 +0000 | [diff] [blame] | 372 | |
Cary Clark | ff11428 | 2016-12-14 11:56:16 -0500 | [diff] [blame] | 373 | protected: |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 374 | SkOpGlobalState* fState; |
| 375 | SkOpSegment fHead; |
| 376 | SkOpSegment* fTail; |
| 377 | SkOpContour* fNext; |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 378 | SkPathOpsBounds fBounds; |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 379 | int fCcw; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 380 | int fCount; |
| 381 | int fFirstSorted; |
| 382 | bool fDone; // set by find top segment |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 383 | bool fOperand; // true for the second argument to a binary operator |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 384 | bool fReverse; // true if contour should be reverse written to path (used only by fix winding) |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 385 | bool fXor; // set if original path had even-odd fill |
| 386 | bool fOppXor; // set if opposite path had even-odd fill |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 387 | SkDEBUGCODE(int fID); |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 388 | SkDEBUGCODE(mutable int fDebugIndent); |
| 389 | }; |
| 390 | |
| 391 | class SkOpContourHead : public SkOpContour { |
caryclark | eed356d | 2016-09-14 07:18:20 -0700 | [diff] [blame] | 392 | public: |
| 393 | SkOpContour* appendContour() { |
Herb Derby | ecc364c | 2017-04-19 15:09:48 -0400 | [diff] [blame] | 394 | SkOpContour* contour = this->globalState()->allocator()->make<SkOpContour>(); |
caryclark | eed356d | 2016-09-14 07:18:20 -0700 | [diff] [blame] | 395 | contour->setNext(nullptr); |
| 396 | SkOpContour* prev = this; |
| 397 | SkOpContour* next; |
| 398 | while ((next = prev->next())) { |
| 399 | prev = next; |
| 400 | } |
| 401 | prev->setNext(contour); |
| 402 | return contour; |
| 403 | } |
| 404 | |
| 405 | void joinAllSegments() { |
| 406 | SkOpContour* next = this; |
| 407 | do { |
Cary Clark | 9c16d1e | 2016-12-19 11:16:36 -0500 | [diff] [blame] | 408 | if (!next->count()) { |
| 409 | continue; |
| 410 | } |
caryclark | eed356d | 2016-09-14 07:18:20 -0700 | [diff] [blame] | 411 | next->joinSegments(); |
| 412 | } while ((next = next->next())); |
| 413 | } |
| 414 | |
| 415 | void remove(SkOpContour* contour) { |
| 416 | if (contour == this) { |
| 417 | SkASSERT(this->count() == 0); |
| 418 | return; |
| 419 | } |
| 420 | SkASSERT(contour->next() == nullptr); |
| 421 | SkOpContour* prev = this; |
| 422 | SkOpContour* next; |
| 423 | while ((next = prev->next()) != contour) { |
| 424 | SkASSERT(next); |
| 425 | prev = next; |
| 426 | } |
| 427 | SkASSERT(prev); |
| 428 | prev->setNext(nullptr); |
| 429 | } |
| 430 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 431 | }; |
| 432 | |
Cary Clark | ff11428 | 2016-12-14 11:56:16 -0500 | [diff] [blame] | 433 | class SkOpContourBuilder { |
| 434 | public: |
| 435 | SkOpContourBuilder(SkOpContour* contour) |
| 436 | : fContour(contour) |
| 437 | , fLastIsLine(false) { |
| 438 | } |
| 439 | |
| 440 | void addConic(SkPoint pts[3], SkScalar weight); |
| 441 | void addCubic(SkPoint pts[4]); |
| 442 | void addCurve(SkPath::Verb verb, const SkPoint pts[4], SkScalar weight = 1); |
| 443 | void addLine(const SkPoint pts[2]); |
| 444 | void addQuad(SkPoint pts[3]); |
| 445 | void flush(); |
| 446 | SkOpContour* contour() { return fContour; } |
| 447 | void setContour(SkOpContour* contour) { flush(); fContour = contour; } |
| 448 | protected: |
| 449 | SkOpContour* fContour; |
| 450 | SkPoint fLastLine[2]; |
| 451 | bool fLastIsLine; |
| 452 | }; |
| 453 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 454 | #endif |