xref: /aosp_15_r20/external/skia/docs/examples/star.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2020 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(star, 256, 256, false, 0) {
star()5*c8dee2aaSAndroid Build Coastguard Worker SkPath star() {
6*c8dee2aaSAndroid Build Coastguard Worker     const SkScalar R = 115.2f, C = 128.0f;
7*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
8*c8dee2aaSAndroid Build Coastguard Worker     path.moveTo(C + R, C);
9*c8dee2aaSAndroid Build Coastguard Worker     for (int i = 1; i < 8; ++i) {
10*c8dee2aaSAndroid Build Coastguard Worker         SkScalar a = 2.6927937f * i;
11*c8dee2aaSAndroid Build Coastguard Worker         path.lineTo(C + R * cos(a), C + R * sin(a));
12*c8dee2aaSAndroid Build Coastguard Worker     }
13*c8dee2aaSAndroid Build Coastguard Worker     return path;
14*c8dee2aaSAndroid Build Coastguard Worker }
draw(SkCanvas * canvas)15*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
16*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
17*c8dee2aaSAndroid Build Coastguard Worker 
18*c8dee2aaSAndroid Build Coastguard Worker     paint.setStyle(SkPaint::kStroke_Style);
19*c8dee2aaSAndroid Build Coastguard Worker     paint.setStrokeWidth(2.0f);
20*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
21*c8dee2aaSAndroid Build Coastguard Worker     paint.setColor(0xff4281A4);
22*c8dee2aaSAndroid Build Coastguard Worker     canvas->clear(SK_ColorWHITE);
23*c8dee2aaSAndroid Build Coastguard Worker     SkPath path(star());
24*c8dee2aaSAndroid Build Coastguard Worker     canvas->drawPath(path, paint);
25*c8dee2aaSAndroid Build Coastguard Worker }
26*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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