1 /*
2  * Copyright 2006 The Android Open Source Project
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 
8 
9 #ifndef SkStrokerPriv_DEFINED
10 #define SkStrokerPriv_DEFINED
11 
12 #include "SkStroke.h"
13 
14 #define CWX(x, y)   (-y)
15 #define CWY(x, y)   (x)
16 #define CCWX(x, y)  (y)
17 #define CCWY(x, y)  (-x)
18 
19 #define CUBIC_ARC_FACTOR    ((SK_ScalarSqrt2 - SK_Scalar1) * 4 / 3)
20 
21 // this enables a global which is not thread-safe; doing so triggers a TSAN error in Chrome tests.
22 #define QUAD_STROKE_APPROX_EXTENDED_DEBUGGING 0  // set to 1 to enable debugging in StrokerTest.cpp
23 
24 class SkStrokerPriv {
25 public:
26     typedef void (*CapProc)(SkPath* path,
27                             const SkPoint& pivot,
28                             const SkVector& normal,
29                             const SkPoint& stop,
30                             SkPath* otherPath);
31 
32     typedef void (*JoinProc)(SkPath* outer, SkPath* inner,
33                              const SkVector& beforeUnitNormal,
34                              const SkPoint& pivot,
35                              const SkVector& afterUnitNormal,
36                              SkScalar radius, SkScalar invMiterLimit,
37                              bool prevIsLine, bool currIsLine);
38 
39     static CapProc  CapFactory(SkPaint::Cap);
40     static JoinProc JoinFactory(SkPaint::Join);
41 };
42 
43 #endif
44