1/*
2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "Matrix3DTransformOperation.h"
28
29#include <algorithm>
30
31namespace WebCore {
32
33bool Matrix3DTransformOperation::operator==(const TransformOperation& o) const
34{
35    if (!isSameType(o))
36        return false;
37    const Matrix3DTransformOperation& m = toMatrix3DTransformOperation(o);
38    return m_matrix == m.m_matrix;
39}
40
41PassRefPtr<TransformOperation> Matrix3DTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
42{
43    if (from && !from->isSameType(*this))
44        return this;
45
46    // Convert the TransformOperations into matrices
47    FloatSize size;
48    TransformationMatrix fromT;
49    TransformationMatrix toT;
50    if (from)
51        from->apply(fromT, size);
52
53    apply(toT, size);
54
55    if (blendToIdentity)
56        std::swap(fromT, toT);
57
58    toT.blend(fromT, progress);
59    return Matrix3DTransformOperation::create(toT);
60}
61
62} // namespace WebCore
63