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      1 
      2 /*
      3  * Copyright 2006 The Android Open Source Project
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 
     10 #ifndef SkStrokerPriv_DEFINED
     11 #define SkStrokerPriv_DEFINED
     12 
     13 #include "SkStroke.h"
     14 
     15 #define CWX(x, y)   (-y)
     16 #define CWY(x, y)   (x)
     17 #define CCWX(x, y)  (y)
     18 #define CCWY(x, y)  (-x)
     19 
     20 #define CUBIC_ARC_FACTOR    ((SK_ScalarSqrt2 - SK_Scalar1) * 4 / 3)
     21 
     22 class SkStrokerPriv {
     23 public:
     24     typedef void (*CapProc)(SkPath* path,
     25                             const SkPoint& pivot,
     26                             const SkVector& normal,
     27                             const SkPoint& stop,
     28                             SkPath* otherPath);
     29 
     30     typedef void (*JoinProc)(SkPath* outer, SkPath* inner,
     31                              const SkVector& beforeUnitNormal,
     32                              const SkPoint& pivot,
     33                              const SkVector& afterUnitNormal,
     34                              SkScalar radius, SkScalar invMiterLimit,
     35                              bool prevIsLine, bool currIsLine);
     36 
     37     static CapProc  CapFactory(SkPaint::Cap);
     38     static JoinProc JoinFactory(SkPaint::Join);
     39 };
     40 
     41 #endif
     42 
     43