c75d6a8e43
Positions, radii, and colors are determined pseudo-randomly. R=tomhudson@google.com BUG=skia: GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2004173002 Review-Url: https://codereview.chromium.org/2004173002
45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/*
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* Copyright 2016 Google, Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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/*
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* Draw 50 semi-transparent circles with pseudo-random positions, radii, and
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* colors, using the default blend mode (SRC OVER). Use of SkRandom with
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* default seed means results SHOULD be identical across multiple platforms.
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*/
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DEF_SIMPLE_GM(bubbles, canvas, 512, 512) {
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canvas->clear(SK_ColorWHITE);
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SkPaint p;
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p.setAntiAlias(true);
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SkRandom rand;
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auto pos_min = SkIntToScalar(0);
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auto pos_max = SkIntToScalar(511);
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auto radius_min = SkIntToScalar(0);
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auto radius_max = SkIntToScalar(128);
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auto color_min = SkIntToScalar(0);
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auto color_max = SkIntToScalar(255);
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const int NUM_BUBBLES = 50;
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for (int i = 0; i < NUM_BUBBLES; i++) {
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auto cx = rand.nextRangeScalar(pos_min, pos_max);
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auto cy = rand.nextRangeScalar(pos_min, pos_max);
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auto radius = rand.nextRangeScalar(radius_min, radius_max);
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auto a = (U8CPU)128;
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auto r = (U8CPU)rand.nextRangeScalar(color_min, color_max);
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auto g = (U8CPU)rand.nextRangeScalar(color_min, color_max);
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auto b = (U8CPU)rand.nextRangeScalar(color_min, color_max);
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p.setColor(SkColorSetARGB(a, r, g, b));
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canvas->drawCircle(cx, cy, radius, p);
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}
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}
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