d7639aff10
- replace virtual with override.
- remove default constructor.
- use default field initializers
- move work from constructor into onOnceBeforeDraw
- mark everything private
- enum { N = 100 }; constants to constexpr
- remove unused variables
Change-Id: I8c7a19bc24fec416a6b88d634ee948d3e842b986
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/228056
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
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* Copyright 2012 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 "include/core/SkCanvas.h"
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#include "include/core/SkColorPriv.h"
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#include "include/core/SkMaskFilter.h"
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#include "include/utils/SkRandom.h"
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#include "samplecode/Sample.h"
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SkScalar get_anim_sin(double secs, SkScalar amplitude, SkScalar periodInSec, SkScalar phaseInSec) {
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if (!periodInSec) {
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return 0;
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}
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double t = secs + phaseInSec;
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t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
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amplitude = SK_ScalarHalf * amplitude;
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return amplitude * SkDoubleToScalar(sin(t)) + amplitude;
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}
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class AnimBlurView : public Sample {
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SkScalar fBlurSigma = 0;
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SkScalar fCircleRadius = 100;
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SkString name() override { return SkString("AnimBlur"); }
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void onDrawContent(SkCanvas* canvas) override {
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static const SkBlurStyle gStyles[] = {
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kNormal_SkBlurStyle,
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kInner_SkBlurStyle,
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kSolid_SkBlurStyle,
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kOuter_SkBlurStyle,
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};
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SkRandom random;
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for (size_t i = 0; i < SK_ARRAY_COUNT(gStyles); ++i) {
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SkPaint paint;
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paint.setMaskFilter(SkMaskFilter::MakeBlur(gStyles[i],
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fBlurSigma));
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paint.setColor(random.nextU() | 0xff000000);
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canvas->drawCircle(200 * SK_Scalar1 + 400 * (i % 2) * SK_Scalar1,
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200 * SK_Scalar1 + i / 2 * 400 * SK_Scalar1,
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fCircleRadius, paint);
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}
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}
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bool onAnimate(double nanos) override {
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fBlurSigma = get_anim_sin(1e-9 * nanos, 100, 4, 5);
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fCircleRadius = 3 + get_anim_sin(1e-9 * nanos, 150, 25, 3);
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return true;
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}
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};
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DEF_SAMPLE( return new AnimBlurView(); )
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