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

38 lines
1.1 KiB
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(SkPath_quadTo_example, 512, 512, false, 0) {
void draw(SkCanvas* canvas) {
canvas->clear(SkColorSetARGB(255, 255, 255, 255));
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
paint.setStrokeWidth(5);
SkPoint a{100, 100};
SkPoint b{200, 400};
SkPoint c{300, 100};
SkPath twoSegments;
twoSegments.moveTo(a);
twoSegments.lineTo(b);
twoSegments.lineTo(c);
canvas->drawPath(twoSegments, paint);
paint.setColor(SkColorSetARGB(255, 0, 0, 255));
SkPath quadraticCurve;
quadraticCurve.moveTo(a);
quadraticCurve.quadTo(b, c);
canvas->drawPath(quadraticCurve, paint);
SkFont font(nullptr, 32);
SkPaint textPaint;
textPaint.setAntiAlias(true);
canvas->drawString("a", a.x(), a.y(), font, textPaint);
canvas->drawString("b", b.x() + 20, b.y() + 20, font, textPaint);
canvas->drawString("c", c.x(), c.y(), font, textPaint);
}
} // END FIDDLE