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/*
* Copyright (C) 2021 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 INC. AND ITS CONTRIBUTORS ``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 INC. OR ITS 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.
*/
#include "config.h"
#include "OffsetRotation.h"
#include "AnimationUtilities.h"
#include <wtf/MathExtras.h>
namespace WebCore {
bool OffsetRotation::operator==(const OffsetRotation& o) const
{
return m_hasAuto == o.m_hasAuto && m_angle == o.m_angle;
}
bool OffsetRotation::canBlend(const OffsetRotation& to) const
{
return m_hasAuto == to.hasAuto();
}
OffsetRotation OffsetRotation::blend(const OffsetRotation& to, const BlendingContext& context) const
{
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1.0);
return context.progress ? to : *this;
}
ASSERT(canBlend(to));
return OffsetRotation(m_hasAuto, clampTo<float>(WebCore::blend(m_angle, to.angle(), context)));
}
WTF::TextStream& operator<<(WTF::TextStream& ts, const OffsetRotation& rotation)
{
ts.dumpProperty("angle", rotation.angle());
ts.dumpProperty("hasAuto", rotation.hasAuto());
return ts;
}
} // namespace WebCore
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