29 lines
982 B
C++
29 lines
982 B
C++
// Copyright 2020 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "tools/fiddle/examples.h"
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REG_FIDDLE(subset_example, 512, 512, false, 3) {
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void draw(SkCanvas* canvas) {
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canvas->drawColor(SK_ColorWHITE);
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const int N = 8;
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int shuffle[N * N];
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for (int i = 0; i < (N * N); ++i) {
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shuffle[i] = i;
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}
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srand(0);
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for (int i = 0; i < (N * N); ++i) {
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std::swap(shuffle[i], shuffle[rand() % (N * N - i) + i]);
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}
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int w = (source.width() - 1) / N + 1;
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int h = (source.height() - 1) / N + 1;
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for (int i = 0; i < N; ++i) {
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for (int j = 0; j < N; ++j) {
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int x = shuffle[(N * i) + j] % N;
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int y = shuffle[(N * i) + j] / N;
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SkBitmap subset;
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source.extractSubset(&subset, SkIRect::MakeXYWH(w * x, h * y, w, h));
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canvas->drawImage(subset.asImage(), w * i, h * j);
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}
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}
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}
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} // END FIDDLE
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