40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
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/*
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* Copyright 2019 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkRegion.h"
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static constexpr int kSize = 3*3*3*3*3;
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static constexpr int kTrans = 10;
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DEF_SIMPLE_GM(clip_sierpinski_region, canvas, 2*kTrans + kSize, 2*kTrans + kSize) {
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SkRegion region;
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static constexpr int kSteps = 4;
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int n = 1;
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SkScalar s = kSize/3.f;
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for (int i = 0; i < kSteps; ++i, n*=3, s/=3.f) {
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for (int x = 0; x < n; ++x) {
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for (int y = 0; y < n; ++y) {
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region.op(SkIRect::MakeXYWH((3*x + 1)*s, (3*y + 1)*s, s, s), SkRegion::kUnion_Op);
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}
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}
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}
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// Test that a save layer with an offset works as expected.
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region.translate(kTrans, kTrans);
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canvas->saveLayer(SkRect::MakeXYWH(kTrans, kTrans, 1000, 1000), nullptr);
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// Make sure the clip call ignores the CTM.
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canvas->rotate(25.f, 50.f, 50.f);
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canvas->clipRegion(region);
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SkPaint red;
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red.setColor(SK_ColorRED);
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canvas->drawPaint(red);
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canvas->restore();
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}
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