/third_party/WebKit/Source/platform/geometry/FloatPoint.h
C Header | 288 lines | 210 code | 48 blank | 30 comment | 7 complexity | 629e34fe660c079dd1b60ffa8efd79e0 MD5 | raw file
- /*
- * 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 "platform/geometry/FloatSize.h"
- #include "platform/geometry/IntPoint.h"
- #include "third_party/skia/include/core/SkPoint.h"
- #include "wtf/Allocator.h"
- #include "wtf/Forward.h"
- #include "wtf/MathExtras.h"
- #include <algorithm>
- #include <iosfwd>
- #if OS(MACOSX)
- typedef struct CGPoint CGPoint;
- #ifdef __OBJC__
- #import <Foundation/Foundation.h>
- #endif
- #endif
- namespace blink {
- class DoublePoint;
- class IntPoint;
- class IntSize;
- class LayoutPoint;
- class LayoutSize;
- class PLATFORM_EXPORT FloatPoint {
- DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
- public:
- FloatPoint() : m_x(0), m_y(0) { }
- FloatPoint(float x, float y) : m_x(x), m_y(y) { }
- FloatPoint(const IntPoint&);
- explicit FloatPoint(const SkPoint& point) : m_x(point.x()), m_y(point.y()) { }
- explicit FloatPoint(const DoublePoint&);
- explicit FloatPoint(const LayoutPoint&);
- explicit FloatPoint(const FloatSize& size) : m_x(size.width()), m_y(size.height()) { }
- explicit FloatPoint(const LayoutSize&);
- explicit FloatPoint(const IntSize& 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;
- }
- 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 shrunkTo(const FloatPoint& other) const
- {
- return FloatPoint(std::min(m_x, other.m_x), std::min(m_y, other.m_y));
- }
- FloatPoint transposedPoint() const
- {
- return FloatPoint(m_y, m_x);
- }
- FloatPoint scaledBy(float scale) const
- {
- return FloatPoint(m_x * scale, m_y * scale);
- }
- #if OS(MACOSX)
- FloatPoint(const CGPoint&);
- operator CGPoint() const;
- #if defined(__OBJC__) && !defined(NSGEOMETRY_TYPES_SAME_AS_CGGEOMETRY_TYPES)
- FloatPoint(const NSPoint&);
- operator NSPoint() const;
- #endif
- #endif
- // Can we remove this one?
- SkPoint data() const;
- operator SkPoint() const { return SkPoint::Make(m_x, m_y); }
- #ifndef NDEBUG
- String toString() const;
- #endif
- 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 IntSize& b)
- {
- return FloatPoint(a.x() + b.width(), a.y() + b.height());
- }
- inline FloatPoint operator+(const IntPoint& 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 FloatPoint operator+(const FloatPoint& a, const IntPoint& 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 FloatSize operator-(const FloatPoint& a, const IntPoint& 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(clampTo<int>(roundf(p.x())), clampTo<int>(roundf(p.y())));
- }
- inline IntSize roundedIntSize(const FloatPoint& p)
- {
- return IntSize(clampTo<int>(roundf(p.x())), clampTo<int>(roundf(p.y())));
- }
- inline IntPoint flooredIntPoint(const FloatPoint& p)
- {
- return IntPoint(clampTo<int>(floorf(p.x())), clampTo<int>(floorf(p.y())));
- }
- inline IntPoint ceiledIntPoint(const FloatPoint& p)
- {
- return IntPoint(clampTo<int>(ceilf(p.x())), clampTo<int>(ceilf(p.y())));
- }
- inline IntSize flooredIntSize(const FloatPoint& p)
- {
- return IntSize(clampTo<int>(floorf(p.x())), clampTo<int>(floorf(p.y())));
- }
- inline FloatSize toFloatSize(const FloatPoint& a)
- {
- return FloatSize(a.x(), a.y());
- }
- // Find point where lines through the two pairs of points intersect. Returns false if the lines don't intersect.
- PLATFORM_EXPORT bool findIntersection(const FloatPoint& p1, const FloatPoint& p2, const FloatPoint& d1, const FloatPoint& d2, FloatPoint& intersection);
- // Redeclared here to avoid ODR issues.
- // See platform/testing/GeometryPrinters.h.
- void PrintTo(const FloatPoint&, std::ostream*);
- } // namespace blink
- #endif