1 /*
2  * Copyright 2020 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 
8 #include "gm/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkPaint.h"
11 #include "include/core/SkPathBuilder.h"
12 
13 // See crbug.com/1086705. The convex linearizing path renderer would collapse too many of the
14 // very-near duplicate vertices and turn the path into a triangle. Since the stroke width is larger
15 // than the radius of the circle, there's the separate issue of what to do when stroke
16 // self-intersects
17 DEF_SIMPLE_GM(crbug_1086705, canvas, 200, 200) {
18     SkPaint paint;
19     paint.setStyle(SkPaint::kStroke_Style);
20     paint.setStrokeWidth(5.f);
21     paint.setAntiAlias(true);
22 
23     SkPoint circleVertices[700];
24     for (int i = 0; i < 700; ++i) {
25         SkScalar angleRads = 2 * SK_ScalarPI * i / 700.f;
26         circleVertices[i] = {100.f + 2.f * SkScalarCos(angleRads),
27                              100.f + 2.f * SkScalarSin(angleRads)};
28     }
29 
30     SkPathBuilder circle;
31     circle.moveTo(circleVertices[0]);
32     for (int i = 1; i < 700; ++i) {
33         circle.lineTo(circleVertices[i]);
34     }
35     circle.close();
36 
37     canvas->drawPath(circle.detach(), paint);
38 }
39