| /* |
| * Copyright 2016 Google, Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| |
| /* |
| * Draw 50 semi-transparent circles with pseudo-random positions, radii, and |
| * colors, using the default blend mode (SRC OVER). Use of SkRandom with |
| * default seed means results SHOULD be identical across multiple platforms. |
| */ |
| DEF_SIMPLE_GM(bubbles, canvas, 512, 512) { |
| canvas->clear(SK_ColorWHITE); |
| |
| SkPaint p; |
| p.setAntiAlias(true); |
| |
| SkRandom rand; |
| |
| auto pos_min = SkIntToScalar(0); |
| auto pos_max = SkIntToScalar(511); |
| auto radius_min = SkIntToScalar(0); |
| auto radius_max = SkIntToScalar(128); |
| auto color_min = SkIntToScalar(0); |
| auto color_max = SkIntToScalar(255); |
| |
| const int NUM_BUBBLES = 50; |
| for (int i = 0; i < NUM_BUBBLES; i++) { |
| auto cx = rand.nextRangeScalar(pos_min, pos_max); |
| auto cy = rand.nextRangeScalar(pos_min, pos_max); |
| auto radius = rand.nextRangeScalar(radius_min, radius_max); |
| |
| auto a = (U8CPU)128; |
| auto r = (U8CPU)rand.nextRangeScalar(color_min, color_max); |
| auto g = (U8CPU)rand.nextRangeScalar(color_min, color_max); |
| auto b = (U8CPU)rand.nextRangeScalar(color_min, color_max); |
| p.setColor(SkColorSetARGB(a, r, g, b)); |
| |
| canvas->drawCircle(cx, cy, radius, p); |
| } |
| } |