xref: /third_party/skia/docs/examples/Cubic.cpp (revision cb93a386)
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// HASH=466445ed991d86de08587066392d654a
5REG_FIDDLE(Cubic, 256, 160, false, 0) {
6void draw(SkCanvas* canvas) {
7    SkPaint paint;
8    paint.setAntiAlias(true);
9    paint.setStyle(SkPaint::kStroke_Style);
10    SkPoint cubicPts[] = {{20, 150}, {90, 10}, {160, 150}, {230, 10}};
11    SkColor colors[] = { 0xff88ff00, 0xff0088bb, 0xff6600cc, 0xffbb3377 };
12    for (unsigned i = 0; i < SK_ARRAY_COUNT(colors); ++i) {
13        paint.setColor(0x7fffffff & colors[i]);
14        paint.setStrokeWidth(1);
15        for (unsigned j = 0; j < 3; ++j) {
16            canvas->drawLine(cubicPts[j], cubicPts[j + 1], paint);
17        }
18        SkPath path;
19        path.moveTo(cubicPts[0]);
20        path.cubicTo(cubicPts[1], cubicPts[2], cubicPts[3]);
21        paint.setStrokeWidth(3);
22        paint.setColor(colors[i]);
23        canvas->drawPath(path, paint);
24        cubicPts[1].fY += 30;
25        cubicPts[2].fX += 30;
26   }
27}
28}  // END FIDDLE
29