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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.
* 3. Neither the name of Apple Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
*/
#pragma once
#include "FloatPoint.h"
#include "FloatQuad.h"
#include "FloatRect.h"
#include <optional>
namespace WebCore {
class FloatLine {
public:
FloatLine() { }
FloatLine(const FloatPoint& start, const FloatPoint& end)
: m_start(start)
, m_end(end)
, m_length(sqrtf(powf(start.x() - end.x(), 2) + powf(start.y() - end.y(), 2)))
{
}
const FloatPoint& start() const { return m_start; }
const FloatPoint& end() const { return m_end; }
float length() const { return m_length; }
WEBCORE_EXPORT const FloatPoint pointAtAbsoluteDistance(float) const;
const FloatPoint pointAtRelativeDistance(float) const;
const FloatLine extendedToBounds(const FloatRect&) const;
const std::optional<FloatPoint> intersectionWith(const FloatLine&) const;
template<class Encoder> void encode(Encoder&) const;
template<class Decoder> static std::optional<FloatLine> decode(Decoder&);
private:
FloatPoint m_start { 0, 0 };
FloatPoint m_end { 0, 0 };
float m_length { 0 };
};
template<class Encoder> void FloatLine::encode(Encoder& encoder) const
{
encoder << m_start;
encoder << m_end;
}
template<class Decoder> std::optional<FloatLine> FloatLine::decode(Decoder& decoder)
{
std::optional<FloatPoint> start;
decoder >> start;
if (!start)
return std::nullopt;
std::optional<FloatPoint> end;
decoder >> end;
if (!end)
return std::nullopt;
return {{ *start, *end }};
}
}
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