15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2009 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 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)#include "config.h" 27f79f16f17ddc4f842d7b7a38603e280e94be826aTorne (Richard Coles)#include "platform/transforms/PerspectiveTransformOperation.h" 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 29bfe3590b1806e3ff18f46ee3af5d4b83078f305aTorne (Richard Coles)#include "platform/animation/AnimationUtilities.h" 307757ec2eadfa2dd8ac2aeed0a4399e9b07ec38cbBen Murdoch#include "wtf/MathExtras.h" 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 32c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)PassRefPtr<TransformOperation> PerspectiveTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (from && !from->isSameType(*this)) 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return this; 3802772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (blendToIdentity) { 40c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) double p = blink::blend(m_p, 1., progress); // FIXME: this seems wrong. https://bugs.webkit.org/show_bug.cgi?id=52700 4109380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return PerspectiveTransformOperation::create(clampToPositiveInteger(p)); 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 4302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) const PerspectiveTransformOperation* fromOp = static_cast<const PerspectiveTransformOperation*>(from); 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformationMatrix fromT; 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformationMatrix toT; 4809380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) fromT.applyPerspective(fromOp ? fromOp->m_p : 0); 4909380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) toT.applyPerspective(m_p); 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) toT.blend(fromT, progress); 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) TransformationMatrix::DecomposedType decomp; 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) toT.decompose(decomp); 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (decomp.perspectiveZ) { 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) double val = -1.0 / decomp.perspectiveZ; 5609380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return PerspectiveTransformOperation::create(clampToPositiveInteger(val)); 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 5809380295ba73501a205346becac22c6978e4671dTorne (Richard Coles) return PerspectiveTransformOperation::create(0); 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 61c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 62