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Diffstat (limited to 'Source/WebCore/platform/graphics/FloatPoint.cpp')
-rw-r--r-- | Source/WebCore/platform/graphics/FloatPoint.cpp | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/FloatPoint.cpp b/Source/WebCore/platform/graphics/FloatPoint.cpp new file mode 100644 index 0000000..7e85b52 --- /dev/null +++ b/Source/WebCore/platform/graphics/FloatPoint.cpp @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved. + * Copyright (C) 2005 Nokia. 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 COMPUTER, INC. ``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 COMPUTER, INC. OR + * 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 "FloatPoint.h" + +#include "TransformationMatrix.h" +#include "FloatConversion.h" +#include "IntPoint.h" +#include <math.h> + +namespace WebCore { + +FloatPoint::FloatPoint(const IntPoint& p) : m_x(p.x()), m_y(p.y()) +{ +} + +void FloatPoint::normalize() +{ + float tempLength = length(); + + if (tempLength) { + m_x /= tempLength; + m_y /= tempLength; + } +} + +float FloatPoint::length() const +{ + return sqrtf(lengthSquared()); +} + +FloatPoint FloatPoint::matrixTransform(const AffineTransform& transform) const +{ + double newX, newY; + transform.map(static_cast<double>(m_x), static_cast<double>(m_y), newX, newY); + return narrowPrecision(newX, newY); +} + +FloatPoint FloatPoint::matrixTransform(const TransformationMatrix& transform) const +{ + double newX, newY; + transform.map(static_cast<double>(m_x), static_cast<double>(m_y), newX, newY); + return narrowPrecision(newX, newY); +} + +FloatPoint FloatPoint::narrowPrecision(double x, double y) +{ + return FloatPoint(narrowPrecisionToFloat(x), narrowPrecisionToFloat(y)); +} + +} |