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
24class SkStrokerPriv {
25public:
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