| /* |
| * 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_FLOAT_POINT_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GEOMETRY_FLOAT_POINT_H_ |
| |
| #include <iosfwd> |
| #include "build/build_config.h" |
| #include "third_party/blink/renderer/platform/geometry/float_size.h" |
| #include "third_party/blink/renderer/platform/geometry/int_point.h" |
| #include "third_party/blink/renderer/platform/wtf/allocator.h" |
| #include "third_party/blink/renderer/platform/wtf/forward.h" |
| #include "ui/gfx/geometry/point_f.h" |
| |
| #if defined(OS_MACOSX) |
| typedef struct CGPoint CGPoint; |
| |
| #ifdef __OBJC__ |
| #import <Foundation/Foundation.h> |
| #endif |
| #endif |
| |
| struct SkPoint; |
| |
| namespace gfx { |
| class PointF; |
| class Point3F; |
| class ScrollOffset; |
| class Vector2dF; |
| } |
| |
| namespace blink { |
| |
| class DoublePoint; |
| class IntPoint; |
| class IntSize; |
| class LayoutPoint; |
| class LayoutSize; |
| |
| class PLATFORM_EXPORT FloatPoint { |
| DISALLOW_NEW(); |
| |
| public: |
| constexpr FloatPoint() : x_(0), y_(0) {} |
| constexpr FloatPoint(float x, float y) : x_(x), y_(y) {} |
| explicit FloatPoint(const IntPoint&); |
| explicit FloatPoint(const SkPoint&); |
| explicit FloatPoint(const DoublePoint&); |
| explicit FloatPoint(const LayoutPoint&); |
| constexpr explicit FloatPoint(const FloatSize& size) |
| : x_(size.Width()), y_(size.Height()) {} |
| explicit FloatPoint(const LayoutSize&); |
| constexpr explicit FloatPoint(const IntSize& size) |
| : x_(size.Width()), y_(size.Height()) {} |
| explicit FloatPoint(const gfx::PointF& point) |
| : x_(point.x()), y_(point.y()) {} |
| |
| static constexpr FloatPoint Zero() { return FloatPoint(); } |
| |
| static FloatPoint NarrowPrecision(double x, double y); |
| |
| constexpr float X() const { return x_; } |
| constexpr float Y() const { return y_; } |
| |
| void SetX(float x) { x_ = x; } |
| void SetY(float y) { y_ = y; } |
| void Set(float x, float y) { |
| x_ = x; |
| y_ = y; |
| } |
| void Move(float dx, float dy) { |
| x_ += dx; |
| y_ += dy; |
| } |
| void Move(const IntSize& a) { |
| x_ += a.Width(); |
| y_ += a.Height(); |
| } |
| void Move(const LayoutSize&); |
| void Move(const FloatSize& a) { |
| x_ += a.Width(); |
| y_ += a.Height(); |
| } |
| void MoveBy(const IntPoint& a) { |
| x_ += a.X(); |
| y_ += a.Y(); |
| } |
| void MoveBy(const LayoutPoint&); |
| void MoveBy(const FloatPoint& a) { |
| x_ += a.X(); |
| y_ += a.Y(); |
| } |
| void Scale(float sx, float sy) { |
| x_ *= sx; |
| y_ *= sy; |
| } |
| |
| float Dot(const FloatPoint& a) const { return x_ * a.X() + y_ * a.Y(); } |
| |
| float SlopeAngleRadians() const; |
| float length() const; |
| float LengthSquared() const { return x_ * x_ + y_ * y_; } |
| |
| FloatPoint ExpandedTo(const FloatPoint& other) const; |
| FloatPoint ShrunkTo(const FloatPoint& other) const; |
| |
| FloatPoint TransposedPoint() const { return FloatPoint(y_, x_); } |
| |
| FloatPoint ScaledBy(float scale) const { |
| return FloatPoint(x_ * scale, y_ * scale); |
| } |
| |
| #if defined(OS_MACOSX) |
| FloatPoint(const CGPoint&); |
| operator CGPoint() const; |
| #endif |
| |
| operator gfx::PointF() const; |
| explicit operator gfx::ScrollOffset() const; |
| explicit operator gfx::Vector2dF() const; |
| operator gfx::Point3F() const; |
| |
| String ToString() const; |
| |
| private: |
| float x_, 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; |
| } |
| |
| constexpr FloatPoint operator+(const FloatPoint& a, const FloatSize& b) { |
| return FloatPoint(a.X() + b.Width(), a.Y() + b.Height()); |
| } |
| |
| constexpr FloatPoint operator+(const FloatPoint& a, const IntSize& b) { |
| return FloatPoint(a.X() + b.Width(), a.Y() + b.Height()); |
| } |
| |
| constexpr FloatPoint operator+(const IntPoint& a, const FloatSize& b) { |
| return FloatPoint(a.X() + b.Width(), a.Y() + b.Height()); |
| } |
| |
| constexpr FloatPoint operator+(const FloatPoint& a, const FloatPoint& b) { |
| return FloatPoint(a.X() + b.X(), a.Y() + b.Y()); |
| } |
| |
| constexpr FloatPoint operator+(const FloatPoint& a, const IntPoint& b) { |
| return FloatPoint(a.X() + b.X(), a.Y() + b.Y()); |
| } |
| |
| constexpr FloatSize operator-(const FloatPoint& a, const FloatPoint& b) { |
| return FloatSize(a.X() - b.X(), a.Y() - b.Y()); |
| } |
| |
| constexpr FloatSize operator-(const FloatPoint& a, const IntPoint& b) { |
| return FloatSize(a.X() - b.X(), a.Y() - b.Y()); |
| } |
| |
| constexpr FloatPoint operator-(const FloatPoint& a, const FloatSize& b) { |
| return FloatPoint(a.X() - b.Width(), a.Y() - b.Height()); |
| } |
| |
| constexpr FloatPoint operator-(const FloatPoint& a) { |
| return FloatPoint(-a.X(), -a.Y()); |
| } |
| |
| constexpr bool operator==(const FloatPoint& a, const FloatPoint& b) { |
| return a.X() == b.X() && a.Y() == b.Y(); |
| } |
| |
| constexpr bool operator!=(const FloatPoint& a, const FloatPoint& b) { |
| return !(a == b); |
| } |
| |
| 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); |
| |
| PLATFORM_EXPORT std::ostream& operator<<(std::ostream&, const FloatPoint&); |
| PLATFORM_EXPORT WTF::TextStream& operator<<(WTF::TextStream&, |
| const FloatPoint&); |
| |
| } // namespace blink |
| |
| #endif |