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 REG_FIDDLE(Path_incReserve, 256, 192, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6 auto addPoly = [](int sides, SkScalar size, SkPath* path) -> void {
7 path->moveTo(size, 0);
8 for (int i = 1; i < sides; i++) {
9 SkScalar rad = SK_ScalarPI * 2 * i / sides;
10 path->lineTo(SkScalarCos(rad) * size, SkScalarSin(rad) * size);
11 }
12 path->close();
13 };
14 SkPath path;
15 path.incReserve(3 + 4 + 5 + 6 + 7 + 8 + 9);
16 for (int sides = 3; sides < 10; ++sides) {
17 addPoly(sides, sides, &path);
18 }
19 SkMatrix matrix;
20 matrix.setScale(10, 10, -10, -10);
21 path.transform(matrix);
22 SkPaint paint;
23 paint.setStyle(SkPaint::kStroke_Style);
24 canvas->drawPath(path, paint);
25 }
26 } // END FIDDLE
27