15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2011 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#ifndef AnimationUtilities_h 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#define AnimationUtilities_h 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2953e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/platform/LayoutUnit.h" 3053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/platform/graphics/IntPoint.h" 317757ec2eadfa2dd8ac2aeed0a4399e9b07ec38cbBen Murdoch#include "wtf/MathExtras.h" 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WebCore { 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline int blend(int from, int to, double progress) 3602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch{ 37e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch return lround(from + (to - from) * progress); 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline unsigned blend(unsigned from, unsigned to, double progress) 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 42e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch return lround(to > from ? from + (to - from) * progress : from - (from - to) * progress); 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline double blend(double from, double to, double progress) 4602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch{ 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return from + (to - from) * progress; 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline float blend(float from, float to, double progress) 5102772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch{ 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return static_cast<float>(from + (to - from) * progress); 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline LayoutUnit blend(LayoutUnit from, LayoutUnit to, double progress) 5602772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch{ 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return from + (to - from) * progress; 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)inline IntPoint blend(const IntPoint& from, const IntPoint& to, double progress) 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 62e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch return IntPoint(blend(from.x(), to.x(), progress), blend(from.y(), to.y(), progress)); 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 6593ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles)// Calculates the accuracy for evaluating a timing function for an animation with the specified duration. 6693ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles)inline double accuracyForDuration(double duration) 6793ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles){ 6893ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) return 1.0 / (200.0 * duration); 6993ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles)} 7093ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} // namespace WebCore 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#endif // AnimationUtilities_h 74