aosp12/external/skia/docs/examples/sum_path_effect.cpp

28 lines
951 B
C++

// Copyright 2020 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
REG_FIDDLE(sum_path_effect, 256, 256, false, 0) {
SkPath star() {
const SkScalar R = 115.2f, C = 128.0f;
SkPath path;
path.moveTo(C + R, C);
for (int i = 1; i < 8; ++i) {
SkScalar a = 2.6927937f * i;
path.lineTo(C + R * cos(a), C + R * sin(a));
}
return path;
}
void draw(SkCanvas* canvas) {
SkPaint paint;
paint.setPathEffect(SkPathEffect::MakeSum(SkDiscretePathEffect::Make(10.0f, 4.0f),
SkDiscretePathEffect::Make(10.0f, 4.0f, 1245u)));
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(2.0f);
paint.setAntiAlias(true);
paint.setColor(0xff4285F4);
canvas->clear(SK_ColorWHITE);
SkPath path(star());
canvas->drawPath(path, paint);
}
} // END FIDDLE