blob: ccbcae7499385e8bdb447d35d86a15fb7c1bfce9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/ozone/demo/renderer_base.h"
#include "base/numerics/math_constants.h"
namespace ui {
namespace {
const int kAnimationSteps = 240;
} // namespace
RendererBase::RendererBase(gfx::AcceleratedWidget widget, const gfx::Size& size)
: widget_(widget), size_(size) {
}
RendererBase::~RendererBase() {
}
float RendererBase::CurrentFraction() const {
float fraction =
(sinf(iteration_ * 2 * base::kPiFloat / kAnimationSteps) + 1) / 2;
return fraction;
}
float RendererBase::NextFraction() {
float fraction = CurrentFraction();
iteration_++;
iteration_ %= kAnimationSteps;
return fraction;
}
} // namespace ui
|
