xref: /aosp_15_r20/external/skia/docs/examples/Canvas_rotate.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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(Canvas_rotate, 256, 256, false, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkPaint paint;
7     paint.setStyle(SkPaint::kStroke_Style);
8     canvas->translate(128, 128);
9     canvas->drawCircle(0, 0, 60, paint);
10     canvas->save();
11     canvas->rotate(10 * 360 / 60);   // 10 minutes of 60 scaled to 360 degrees
12     canvas->drawLine(0, 0, 0, -50, paint);
13     canvas->restore();
14     canvas->rotate((5 + 10.f/60) * 360 / 12); // 5 and 10/60 hours of 12 scaled to 360 degrees
15     canvas->drawLine(0, 0, 0, -30, paint);
16 }
17 }  // END FIDDLE
18