| /* |
| * 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); } |
| |
| String toString() 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 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 |