1/*
2 * Copyright (C) 2004, 2006, 2007 Apple Inc.  All rights reserved.
3 * Copyright (C) 2005 Nokia.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "FloatPoint.h"
29
30#include "AffineTransform.h"
31#include "FloatConversion.h"
32#include "IntPoint.h"
33#include "TransformationMatrix.h"
34#include <limits>
35#include <math.h>
36#include <wtf/PrintStream.h>
37
38namespace WebCore {
39
40FloatPoint::FloatPoint(const IntPoint& p) : m_x(p.x()), m_y(p.y())
41{
42}
43
44void FloatPoint::normalize()
45{
46    float tempLength = length();
47
48    if (tempLength) {
49        m_x /= tempLength;
50        m_y /= tempLength;
51    }
52}
53
54float FloatPoint::slopeAngleRadians() const
55{
56    return atan2f(m_y, m_x);
57}
58
59float FloatPoint::length() const
60{
61    return sqrtf(lengthSquared());
62}
63
64FloatPoint FloatPoint::matrixTransform(const AffineTransform& transform) const
65{
66    double newX, newY;
67    transform.map(static_cast<double>(m_x), static_cast<double>(m_y), newX, newY);
68    return narrowPrecision(newX, newY);
69}
70
71FloatPoint FloatPoint::matrixTransform(const TransformationMatrix& transform) const
72{
73    double newX, newY;
74    transform.map(static_cast<double>(m_x), static_cast<double>(m_y), newX, newY);
75    return narrowPrecision(newX, newY);
76}
77
78FloatPoint FloatPoint::narrowPrecision(double x, double y)
79{
80    return FloatPoint(narrowPrecisionToFloat(x), narrowPrecisionToFloat(y));
81}
82
83void FloatPoint::dump(PrintStream& out) const
84{
85    out.printf("(%f, %f)", x(), y());
86}
87
88}
89