| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_ANIMATION_ANIMATION_UTILITIES_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_ANIMATION_ANIMATION_UTILITIES_H_ |
| |
| #include "third_party/blink/renderer/platform/geometry/blend.h" |
| #include "ui/gfx/geometry/cubic_bezier.h" |
| |
| namespace blink { |
| |
| // Calculates the accuracy for evaluating a timing function for an animation |
| // with the specified duration. |
| inline double AccuracyForDuration(double duration) { |
| double accuracy = 1.0 / (200.0 * duration); |
| double default_epsilon = gfx::CubicBezier::GetDefaultEpsilon(); |
| // Avoid min()/max() from std here in the header, because that would require |
| // inclusion of <algorithm>, which is slow to compile. |
| return accuracy > default_epsilon ? accuracy : default_epsilon; |
| } |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_ANIMATION_ANIMATION_UTILITIES_H_ |