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 | |
| 24 | ~SkOpContour() { |
| 25 | if (fNext) { |
| 26 | fNext->~SkOpContour(); |
| 27 | } |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 28 | } |
| 29 | |
| 30 | bool operator<(const SkOpContour& rh) const { |
| 31 | return fBounds.fTop == rh.fBounds.fTop |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 32 | ? fBounds.fLeft < rh.fBounds.fLeft |
| 33 | : fBounds.fTop < rh.fBounds.fTop; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 34 | } |
| 35 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 36 | void addConic(SkPoint pts[3], SkScalar weight) { |
| 37 | appendSegment().addConic(pts, weight, this); |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 38 | } |
| 39 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 40 | void addCubic(SkPoint pts[4]) { |
| 41 | appendSegment().addCubic(pts, this); |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 42 | } |
| 43 | |
caryclark | 27c015d | 2016-09-23 05:47:20 -0700 | [diff] [blame] | 44 | SkOpSegment* addCurve(SkPath::Verb verb, const SkPoint pts[4], SkScalar weight = 1); |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 45 | |
| 46 | SkOpSegment* addLine(SkPoint pts[2]) { |
caryclark | bb51f4a | 2016-08-23 07:38:48 -0700 | [diff] [blame] | 47 | SkASSERT(pts[0] != pts[1]); |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 48 | return appendSegment().addLine(pts, this); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 49 | } |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 50 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 51 | void addQuad(SkPoint pts[3]) { |
| 52 | appendSegment().addQuad(pts, this); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 53 | } |
| 54 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 55 | SkOpSegment& appendSegment() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 56 | SkOpSegment* result = fCount++ |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 57 | ? SkOpTAllocator<SkOpSegment>::Allocate(this->globalState()->allocator()) : &fHead; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 58 | result->setPrev(fTail); |
| 59 | if (fTail) { |
| 60 | fTail->setNext(result); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 61 | } |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 62 | fTail = result; |
| 63 | return *result; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 64 | } |
| 65 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 66 | const SkPathOpsBounds& bounds() const { |
| 67 | return fBounds; |
| 68 | } |
| 69 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 70 | void calcAngles() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 71 | SkASSERT(fCount > 0); |
| 72 | SkOpSegment* segment = &fHead; |
| 73 | do { |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 74 | segment->calcAngles(); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 75 | } while ((segment = segment->next())); |
caryclark@google.com | fa2aeee | 2013-07-15 13:29:13 +0000 | [diff] [blame] | 76 | } |
| 77 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 78 | void complete() { |
| 79 | setBounds(); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 80 | } |
| 81 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 82 | int count() const { |
| 83 | return fCount; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 84 | } |
| 85 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 86 | int debugID() const { |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 87 | return SkDEBUGRELEASE(fID, -1); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 88 | } |
| 89 | |
| 90 | int debugIndent() const { |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 91 | return SkDEBUGRELEASE(fDebugIndent, 0); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 92 | } |
| 93 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 94 | |
| 95 | const SkOpAngle* debugAngle(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 96 | return SkDEBUGRELEASE(this->globalState()->debugAngle(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 97 | } |
| 98 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 99 | const SkOpCoincidence* debugCoincidence() const { |
| 100 | return this->globalState()->coincidence(); |
| 101 | } |
| 102 | |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame^] | 103 | #if DEBUG_COIN |
| 104 | void debugCheckHealth(SkPathOpsDebug::GlitchLog* ) const; |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 105 | #endif |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 106 | |
caryclark | 30b9fdd | 2016-08-31 14:36:29 -0700 | [diff] [blame] | 107 | SkOpContour* debugContour(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 108 | return SkDEBUGRELEASE(this->globalState()->debugContour(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 109 | } |
| 110 | |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame^] | 111 | #if DEBUG_COIN |
| 112 | void debugMissingCoincidence(SkPathOpsDebug::GlitchLog* log) const; |
| 113 | void debugMoveMultiples(SkPathOpsDebug::GlitchLog* ) const; |
| 114 | void debugMoveNearby(SkPathOpsDebug::GlitchLog* log) const; |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 115 | #endif |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 116 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 117 | const SkOpPtT* debugPtT(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 118 | return SkDEBUGRELEASE(this->globalState()->debugPtT(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | const SkOpSegment* debugSegment(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 122 | return SkDEBUGRELEASE(this->globalState()->debugSegment(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Cary Clark | ab87d7a | 2016-10-04 10:01:04 -0400 | [diff] [blame^] | 125 | #if DEBUG_ACTIVE_SPANS |
| 126 | void debugShowActiveSpans() { |
| 127 | SkOpSegment* segment = &fHead; |
| 128 | do { |
| 129 | segment->debugShowActiveSpans(); |
| 130 | } while ((segment = segment->next())); |
| 131 | } |
| 132 | #endif |
| 133 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 134 | const SkOpSpanBase* debugSpan(int id) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 135 | return SkDEBUGRELEASE(this->globalState()->debugSpan(id), nullptr); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 136 | } |
| 137 | |
| 138 | SkOpGlobalState* globalState() const { |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 139 | return fState; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | void debugValidate() const { |
| 143 | #if DEBUG_VALIDATE |
| 144 | const SkOpSegment* segment = &fHead; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 145 | const SkOpSegment* prior = nullptr; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 146 | do { |
| 147 | segment->debugValidate(); |
| 148 | SkASSERT(segment->prev() == prior); |
| 149 | prior = segment; |
| 150 | } while ((segment = segment->next())); |
| 151 | SkASSERT(prior == fTail); |
| 152 | #endif |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | bool done() const { |
| 156 | return fDone; |
| 157 | } |
| 158 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 159 | void dump() const; |
| 160 | void dumpAll() const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 161 | void dumpAngles() const; |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 162 | void dumpContours() const; |
| 163 | void dumpContoursAll() const; |
| 164 | void dumpContoursAngles() const; |
| 165 | void dumpContoursPts() const; |
| 166 | void dumpContoursPt(int segmentID) const; |
| 167 | void dumpContoursSegment(int segmentID) const; |
| 168 | void dumpContoursSpan(int segmentID) const; |
| 169 | void dumpContoursSpans() const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 170 | void dumpPt(int ) const; |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 171 | void dumpPts(const char* prefix = "seg") const; |
| 172 | void dumpPtsX(const char* prefix) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 173 | void dumpSegment(int ) const; |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 174 | void dumpSegments(const char* prefix = "seg", SkPathOp op = (SkPathOp) -1) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 175 | void dumpSpan(int ) const; |
| 176 | void dumpSpans() const; |
| 177 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 178 | const SkPoint& end() const { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 179 | return fTail->pts()[SkPathOpsVerbToPoints(fTail->verb())]; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 180 | } |
| 181 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 182 | SkOpSpan* findSortableTop(SkOpContour* ); |
| 183 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 184 | SkOpSegment* first() { |
| 185 | SkASSERT(fCount > 0); |
| 186 | return &fHead; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 187 | } |
| 188 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 189 | const SkOpSegment* first() const { |
| 190 | SkASSERT(fCount > 0); |
| 191 | return &fHead; |
caryclark | dac1d17 | 2014-06-17 05:15:38 -0700 | [diff] [blame] | 192 | } |
| 193 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 194 | void indentDump() const { |
| 195 | SkDEBUGCODE(fDebugIndent += 2); |
caryclark@google.com | a2bbc6e | 2013-11-01 17:36:03 +0000 | [diff] [blame] | 196 | } |
| 197 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 198 | void init(SkOpGlobalState* globalState, bool operand, bool isXor) { |
| 199 | fState = globalState; |
| 200 | fOperand = operand; |
| 201 | fXor = isXor; |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 202 | SkDEBUGCODE(fID = globalState->nextContourID()); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 203 | } |
| 204 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 205 | int isCcw() const { |
| 206 | return fCcw; |
| 207 | } |
| 208 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 209 | bool isXor() const { |
| 210 | return fXor; |
| 211 | } |
| 212 | |
caryclark | eed356d | 2016-09-14 07:18:20 -0700 | [diff] [blame] | 213 | void joinSegments() { |
| 214 | SkOpSegment* segment = &fHead; |
| 215 | SkOpSegment* next; |
| 216 | do { |
| 217 | next = segment->next(); |
| 218 | segment->joinEnds(next ? next : &fHead); |
| 219 | } while ((segment = next)); |
| 220 | } |
| 221 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 222 | void markAllDone() { |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 223 | SkOpSegment* segment = &fHead; |
| 224 | do { |
| 225 | segment->markAllDone(); |
| 226 | } while ((segment = segment->next())); |
| 227 | } |
| 228 | |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 229 | // Please keep this aligned with debugMissingCoincidence() |
| 230 | bool missingCoincidence() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 231 | SkASSERT(fCount > 0); |
| 232 | SkOpSegment* segment = &fHead; |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 233 | bool result = false; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 234 | do { |
| 235 | if (fState->angleCoincidence()) { |
caryclark | 26ad22a | 2015-10-16 09:03:38 -0700 | [diff] [blame] | 236 | #if DEBUG_ANGLE |
| 237 | segment->debugCheckAngleCoin(); |
| 238 | #endif |
caryclark | 55888e4 | 2016-07-18 10:01:36 -0700 | [diff] [blame] | 239 | } else if (segment->missingCoincidence()) { |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 240 | result = true; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 241 | } |
caryclark | 27c8eb8 | 2015-07-06 11:38:33 -0700 | [diff] [blame] | 242 | segment = segment->next(); |
| 243 | } while (segment); |
| 244 | return result; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 245 | } |
| 246 | |
caryclark | 08bc848 | 2015-04-24 09:08:57 -0700 | [diff] [blame] | 247 | bool moveMultiples() { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 248 | SkASSERT(fCount > 0); |
| 249 | SkOpSegment* segment = &fHead; |
| 250 | do { |
caryclark | d78c088 | 2016-02-24 09:03:07 -0800 | [diff] [blame] | 251 | if (!segment->moveMultiples()) { |
| 252 | return false; |
| 253 | } |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 254 | } while ((segment = segment->next())); |
| 255 | return true; |
| 256 | } |
| 257 | |
caryclark | 08bc848 | 2015-04-24 09:08:57 -0700 | [diff] [blame] | 258 | void moveNearby() { |
| 259 | SkASSERT(fCount > 0); |
| 260 | SkOpSegment* segment = &fHead; |
| 261 | do { |
| 262 | segment->moveNearby(); |
| 263 | } while ((segment = segment->next())); |
| 264 | } |
| 265 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 266 | SkOpContour* next() { |
| 267 | return fNext; |
| 268 | } |
| 269 | |
| 270 | const SkOpContour* next() const { |
| 271 | return fNext; |
| 272 | } |
| 273 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 274 | bool operand() const { |
| 275 | return fOperand; |
| 276 | } |
| 277 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 278 | bool oppXor() const { |
| 279 | return fOppXor; |
| 280 | } |
| 281 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 282 | void outdentDump() const { |
| 283 | SkDEBUGCODE(fDebugIndent -= 2); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 284 | } |
| 285 | |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 286 | void rayCheck(const SkOpRayHit& base, SkOpRayDir dir, SkOpRayHit** hits, SkChunkAlloc* ); |
| 287 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 288 | void reset() { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 289 | fTail = nullptr; |
| 290 | fNext = nullptr; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 291 | fCount = 0; |
| 292 | fDone = false; |
| 293 | SkDEBUGCODE(fBounds.set(SK_ScalarMax, SK_ScalarMax, SK_ScalarMin, SK_ScalarMin)); |
| 294 | SkDEBUGCODE(fFirstSorted = -1); |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 295 | SkDEBUGCODE(fDebugIndent = 0); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 296 | } |
| 297 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 298 | void resetReverse() { |
| 299 | SkOpContour* next = this; |
| 300 | do { |
| 301 | next->fCcw = -1; |
| 302 | next->fReverse = false; |
| 303 | } while ((next = next->next())); |
| 304 | } |
| 305 | |
| 306 | bool reversed() const { |
| 307 | return fReverse; |
| 308 | } |
| 309 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 310 | void setBounds() { |
| 311 | SkASSERT(fCount > 0); |
| 312 | const SkOpSegment* segment = &fHead; |
| 313 | fBounds = segment->bounds(); |
| 314 | while ((segment = segment->next())) { |
| 315 | fBounds.add(segment->bounds()); |
| 316 | } |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 317 | } |
| 318 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 319 | void setCcw(int ccw) { |
| 320 | fCcw = ccw; |
| 321 | } |
| 322 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 323 | void setGlobalState(SkOpGlobalState* state) { |
| 324 | fState = state; |
| 325 | } |
| 326 | |
| 327 | void setNext(SkOpContour* contour) { |
| 328 | // SkASSERT(!fNext == !!contour); |
| 329 | fNext = contour; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | void setOperand(bool isOp) { |
| 333 | fOperand = isOp; |
| 334 | } |
| 335 | |
| 336 | void setOppXor(bool isOppXor) { |
| 337 | fOppXor = isOppXor; |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 338 | } |
| 339 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 340 | void setReverse() { |
| 341 | fReverse = true; |
| 342 | } |
| 343 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 344 | void setXor(bool isXor) { |
| 345 | fXor = isXor; |
| 346 | } |
| 347 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 348 | void sortAngles() { |
| 349 | SkASSERT(fCount > 0); |
| 350 | SkOpSegment* segment = &fHead; |
| 351 | do { |
| 352 | segment->sortAngles(); |
| 353 | } while ((segment = segment->next())); |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 354 | } |
| 355 | |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 356 | const SkPoint& start() const { |
| 357 | return fHead.pts()[0]; |
| 358 | } |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 359 | |
| 360 | void toPartialBackward(SkPathWriter* path) const { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 361 | const SkOpSegment* segment = fTail; |
| 362 | do { |
caryclark | ef784fb | 2015-10-30 12:03:06 -0700 | [diff] [blame] | 363 | SkAssertResult(segment->addCurveTo(segment->tail(), segment->head(), path)); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 364 | } while ((segment = segment->prev())); |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | void toPartialForward(SkPathWriter* path) const { |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 368 | const SkOpSegment* segment = &fHead; |
| 369 | do { |
caryclark | ef784fb | 2015-10-30 12:03:06 -0700 | [diff] [blame] | 370 | SkAssertResult(segment->addCurveTo(segment->head(), segment->tail(), path)); |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 371 | } while ((segment = segment->next())); |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 372 | } |
| 373 | |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 374 | void toReversePath(SkPathWriter* path) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 375 | void toPath(SkPathWriter* path) const; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 376 | SkOpSegment* undoneSegment(SkOpSpanBase** startPtr, SkOpSpanBase** endPtr); |
commit-bot@chromium.org | 4431e77 | 2014-04-14 17:08:59 +0000 | [diff] [blame] | 377 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 378 | private: |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 379 | SkOpGlobalState* fState; |
| 380 | SkOpSegment fHead; |
| 381 | SkOpSegment* fTail; |
| 382 | SkOpContour* fNext; |
reed | 0dc4dd6 | 2015-03-24 13:55:33 -0700 | [diff] [blame] | 383 | SkPathOpsBounds fBounds; |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 384 | int fCcw; |
caryclark | 5435929 | 2015-03-26 07:52:43 -0700 | [diff] [blame] | 385 | int fCount; |
| 386 | int fFirstSorted; |
| 387 | bool fDone; // set by find top segment |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 388 | bool fOperand; // true for the second argument to a binary operator |
caryclark | 5b5ddd7 | 2015-05-18 05:12:56 -0700 | [diff] [blame] | 389 | 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] | 390 | bool fXor; // set if original path had even-odd fill |
| 391 | bool fOppXor; // set if opposite path had even-odd fill |
caryclark | 1049f12 | 2015-04-20 08:31:59 -0700 | [diff] [blame] | 392 | SkDEBUGCODE(int fID); |
caryclark | 624637c | 2015-05-11 07:21:27 -0700 | [diff] [blame] | 393 | SkDEBUGCODE(mutable int fDebugIndent); |
| 394 | }; |
| 395 | |
| 396 | class SkOpContourHead : public SkOpContour { |
caryclark | eed356d | 2016-09-14 07:18:20 -0700 | [diff] [blame] | 397 | public: |
| 398 | SkOpContour* appendContour() { |
| 399 | SkOpContour* contour = SkOpTAllocator<SkOpContour>::New(this->globalState()->allocator()); |
| 400 | contour->setNext(nullptr); |
| 401 | SkOpContour* prev = this; |
| 402 | SkOpContour* next; |
| 403 | while ((next = prev->next())) { |
| 404 | prev = next; |
| 405 | } |
| 406 | prev->setNext(contour); |
| 407 | return contour; |
| 408 | } |
| 409 | |
| 410 | void joinAllSegments() { |
| 411 | SkOpContour* next = this; |
| 412 | do { |
| 413 | next->joinSegments(); |
| 414 | } while ((next = next->next())); |
| 415 | } |
| 416 | |
| 417 | void remove(SkOpContour* contour) { |
| 418 | if (contour == this) { |
| 419 | SkASSERT(this->count() == 0); |
| 420 | return; |
| 421 | } |
| 422 | SkASSERT(contour->next() == nullptr); |
| 423 | SkOpContour* prev = this; |
| 424 | SkOpContour* next; |
| 425 | while ((next = prev->next()) != contour) { |
| 426 | SkASSERT(next); |
| 427 | prev = next; |
| 428 | } |
| 429 | SkASSERT(prev); |
| 430 | prev->setNext(nullptr); |
| 431 | } |
| 432 | |
caryclark@google.com | 07393ca | 2013-04-08 11:47:37 +0000 | [diff] [blame] | 433 | }; |
| 434 | |
| 435 | #endif |