| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 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. |
| Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 3 | #include "tools/fiddle/examples.h" |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 4 | // HASH=f2260f2a170a54aef5bafe5b91c121b3 |
| Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Path_incReserve, 256, 192, false, 0) { |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 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++) { |
| Brian Osman | 4428f2c | 2019-04-02 10:59:28 -0400 | [diff] [blame] | 10 | SkScalar rad = SK_ScalarPI * 2 * i / sides; |
| 11 | path->lineTo(SkScalarCos(rad) * size, SkScalarSin(rad) * size); |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 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 |