1 // Copyright 2019 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 // HASH=f2260f2a170a54aef5bafe5b91c121b3
5 REG_FIDDLE(Path_incReserve, 256, 192, false, 0) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 auto addPoly = [](int sides, SkScalar size, SkPath* path) -> void {
8 path->moveTo(size, 0);
9 for (int i = 1; i < sides; i++) {
10 SkScalar rad = SK_ScalarPI * 2 * i / sides;
11 path->lineTo(SkScalarCos(rad) * size, SkScalarSin(rad) * size);
12 }
13 path->close();
14 };
15 SkPath path;
16 path.incReserve(3 + 4 + 5 + 6 + 7 + 8 + 9);
17 for (int sides = 3; sides < 10; ++sides) {
18 addPoly(sides, sides, &path);
19 }
20 SkMatrix matrix;
21 matrix.setScale(10, 10, -10, -10);
22 path.transform(matrix);
23 SkPaint paint;
24 paint.setStyle(SkPaint::kStroke_Style);
25 canvas->drawPath(path, paint);
26 }
27 } // END FIDDLE
28