blob: a7e724c2fffb8beabf29886fbb228311af5efd3d [file] [log] [blame]
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "include/core/SkBlurTypes.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorPriv.h"
#include "include/core/SkMaskFilter.h"
#include "src/base/SkRandom.h"
#include "tools/viewer/Slide.h"
#include <iterator>
SkScalar get_anim_sin(double secs, SkScalar amplitude, SkScalar periodInSec, SkScalar phaseInSec) {
if (!periodInSec) {
return 0;
}
double t = secs + phaseInSec;
t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
amplitude = SK_ScalarHalf * amplitude;
return amplitude * SkDoubleToScalar(sin(t)) + amplitude;
}
class AnimBlurSlide : public Slide {
SkScalar fBlurSigma = 0;
SkScalar fCircleRadius = 100;
public:
AnimBlurSlide() { fName ="AnimBlur"; }
void draw(SkCanvas* canvas) override {
static const SkBlurStyle gStyles[] = {
kNormal_SkBlurStyle,
kInner_SkBlurStyle,
kSolid_SkBlurStyle,
kOuter_SkBlurStyle,
};
SkRandom random;
for (size_t i = 0; i < std::size(gStyles); ++i) {
SkPaint paint;
paint.setMaskFilter(SkMaskFilter::MakeBlur(gStyles[i],
fBlurSigma));
paint.setColor(random.nextU() | 0xff000000);
canvas->drawCircle(200 * SK_Scalar1 + 400 * (i % 2) * SK_Scalar1,
200 * SK_Scalar1 + i / 2 * 400 * SK_Scalar1,
fCircleRadius, paint);
}
}
bool animate(double nanos) override {
fBlurSigma = get_anim_sin(1e-9 * nanos, 100, 4, 5);
fCircleRadius = 3 + get_anim_sin(1e-9 * nanos, 150, 25, 3);
return true;
}
};
DEF_SLIDE( return new AnimBlurSlide(); )