Move geometry classes from core/platform/graphics to platform/geometry

Source/core/platform/graphics/FloatPoint.h

-/*
- * 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.
- */
-
-#ifndef FloatPoint_h
-#define FloatPoint_h
-
-#include "core/platform/graphics/FloatSize.h"
-#include "core/platform/graphics/IntPoint.h"
-#include "wtf/MathExtras.h"
-#include <algorithm>
-
-#if OS(MACOSX)
-typedef struct CGPoint CGPoint;
-
-#ifdef NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES
-typedef struct CGPoint NSPoint;
-#else
-typedef struct _NSPoint NSPoint;
-#endif
-#endif
-
-struct SkPoint;
-
-namespace WebCore {
-
-class AffineTransform;
-class TransformationMatrix;
-class IntPoint;
-class IntSize;
-class LayoutPoint;
-class LayoutSize;
-
-class FloatPoint {
-public:
-    FloatPoint() : m_x(0), m_y(0) { }
-    FloatPoint(float x, float y) : m_x(x), m_y(y) { }
-    FloatPoint(const IntPoint&);
-    FloatPoint(const LayoutPoint&);
-    explicit FloatPoint(const FloatSize& size) : m_x(size.width()), m_y(size.height()) { }
-
-    static FloatPoint zero() { return FloatPoint(); }
-
-    static FloatPoint narrowPrecision(double x, double y);
-
-    float x() const { return m_x; }
-    float y() const { return m_y; }
-
-    void setX(float x) { m_x = x; }
-    void setY(float y) { m_y = y; }
-    void set(float x, float y)
-    {
-        m_x = x;
-        m_y = y;
-    }
-    void move(float dx, float dy)
-    {
-        m_x += dx;
-        m_y += dy;
-    }
-    void move(const IntSize& a)
-    {
-        m_x += a.width();
-        m_y += a.height();
-    }
-    void move(const LayoutSize&);
-    void move(const FloatSize& a)
-    {
-        m_x += a.width();
-        m_y += a.height();
-    }
-    void moveBy(const IntPoint& a)
-    {
-        m_x += a.x();
-        m_y += a.y();
-    }
-    void moveBy(const LayoutPoint&);
-    void moveBy(const FloatPoint& a)
-    {
-        m_x += a.x();
-        m_y += a.y();
-    }
-    void scale(float sx, float sy)
-    {
-        m_x *= sx;
-        m_y *= sy;
-    }
-
-    void normalize();
-
-    float dot(const FloatPoint& a) const
-    {
-        return m_x * a.x() + m_y * a.y();
-    }
-
-    float slopeAngleRadians() const;
-    float length() const;
-    float lengthSquared() const
-    {
-        return m_x * m_x + m_y * m_y;
-    }
-
-    FloatPoint expandedTo(const FloatPoint& other) const
-    {
-        return FloatPoint(std::max(m_x, other.m_x), std::max(m_y, other.m_y));
-    }
-
-    FloatPoint transposedPoint() const
-    {
-        return FloatPoint(m_y, m_x);
-    }
-
-#if OS(MACOSX)
-    FloatPoint(const CGPoint&);
-    operator CGPoint() const;
-#if !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
-    FloatPoint(const NSPoint&);
-    operator NSPoint() const;
-#endif
-#endif
-
-    operator SkPoint() const;
-
-    FloatPoint matrixTransform(const TransformationMatrix&) const;
-    FloatPoint matrixTransform(const AffineTransform&) const;
-
-private:
-    float m_x, m_y;
-};
-
-
-inline FloatPoint& operator+=(FloatPoint& a, const FloatSize& b)
-{
-    a.move(b.width(), b.height());
-    return a;
-}
-
-inline FloatPoint& operator+=(FloatPoint& a, const FloatPoint& b)
-{
-    a.move(b.x(), b.y());
-    return a;
-}
-
-inline FloatPoint& operator-=(FloatPoint& a, const FloatSize& b)
-{
-    a.move(-b.width(), -b.height());
-    return a;
-}
-
-inline FloatPoint operator+(const FloatPoint& a, const FloatSize& b)
-{
-    return FloatPoint(a.x() + b.width(), a.y() + b.height());
-}
-
-inline FloatPoint operator+(const FloatPoint& a, const FloatPoint& b)
-{
-    return FloatPoint(a.x() + b.x(), a.y() + b.y());
-}
-
-inline FloatSize operator-(const FloatPoint& a, const FloatPoint& b)
-{
-    return FloatSize(a.x() - b.x(), a.y() - b.y());
-}
-
-inline FloatPoint operator-(const FloatPoint& a, const FloatSize& b)
-{
-    return FloatPoint(a.x() - b.width(), a.y() - b.height());
-}
-
-inline FloatPoint operator-(const FloatPoint& a)
-{
-    return FloatPoint(-a.x(), -a.y());
-}
-
-inline bool operator==(const FloatPoint& a, const FloatPoint& b)
-{
-    return a.x() == b.x() && a.y() == b.y();
-}
-
-inline bool operator!=(const FloatPoint& a, const FloatPoint& b)
-{
-    return a.x() != b.x() || a.y() != b.y();
-}
-
-inline float operator*(const FloatPoint& a, const FloatPoint& b)
-{
-    // dot product
-    return a.dot(b);
-}
-
-inline IntPoint roundedIntPoint(const FloatPoint& p)
-{
-    return IntPoint(clampToInteger(roundf(p.x())), clampToInteger(roundf(p.y())));
-}
-
-inline IntPoint flooredIntPoint(const FloatPoint& p)
-{
-    return IntPoint(clampToInteger(floorf(p.x())), clampToInteger(floorf(p.y())));
-}
-
-inline IntPoint ceiledIntPoint(const FloatPoint& p)
-{
-    return IntPoint(clampToInteger(ceilf(p.x())), clampToInteger(ceilf(p.y())));
-}
-
-inline IntSize flooredIntSize(const FloatPoint& p)
-{
-    return IntSize(clampToInteger(floorf(p.x())), clampToInteger(floorf(p.y())));
-}
-
-inline FloatSize toFloatSize(const FloatPoint& a)
-{
-    return FloatSize(a.x(), a.y());
-}
-
-float findSlope(const FloatPoint& p1, const FloatPoint& p2, float& c);
-
-// Find point where lines through the two pairs of points intersect. Returns false if the lines don't intersect.
-bool findIntersection(const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& d1, const FloatPoint& d2, FloatPoint& intersection);
-
-}
-
-#endif