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1 /* |
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2 * Copyright 2012 Google Inc. |
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3 * |
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4 * Use of this source code is governed by a BSD-style license that can be |
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5 * found in the LICENSE file. |
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6 */ |
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7 #ifndef SkOpEdgeBuilder_DEFINED |
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8 #define SkOpEdgeBuilder_DEFINED |
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9 |
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10 #include "SkOpContour.h" |
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11 #include "SkPathWriter.h" |
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12 #include "SkTArray.h" |
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13 |
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14 class SkOpEdgeBuilder { |
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15 public: |
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16 SkOpEdgeBuilder(const SkPathWriter& path, SkTArray<SkOpContour>& contours) |
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17 : fPath(path.nativePath()) |
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18 , fContours(contours) |
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19 , fAllowOpenContours(true) { |
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20 init(); |
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21 } |
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22 |
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23 SkOpEdgeBuilder(const SkPath& path, SkTArray<SkOpContour>& contours) |
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24 : fPath(&path) |
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25 , fContours(contours) |
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26 , fAllowOpenContours(false) { |
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27 init(); |
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28 } |
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29 |
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30 void complete() { |
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31 if (fCurrentContour && fCurrentContour->segments().count()) { |
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32 fCurrentContour->complete(); |
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33 fCurrentContour = NULL; |
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34 } |
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35 } |
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36 |
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37 SkPathOpsMask xorMask() const { |
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38 return fXorMask[fOperand]; |
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39 } |
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40 |
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41 void addOperand(const SkPath& path); |
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42 bool finish(); |
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43 void init(); |
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44 |
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45 private: |
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46 void closeContour(const SkPoint& curveEnd, const SkPoint& curveStart); |
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47 bool close(); |
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48 int preFetch(); |
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49 bool walk(); |
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50 |
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51 const SkPath* fPath; |
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52 SkTArray<SkPoint, true> fPathPts; |
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53 SkTArray<uint8_t, true> fPathVerbs; |
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54 SkOpContour* fCurrentContour; |
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55 SkTArray<SkOpContour>& fContours; |
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56 SkPathOpsMask fXorMask[2]; |
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57 int fSecondHalf; |
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58 bool fOperand; |
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59 bool fAllowOpenContours; |
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60 bool fUnparseable; |
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61 }; |
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62 |
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63 #endif |