xy

Documentation

Overview

Package xy provides xy Position

Index

• type Line
  • func NewLine(x1, y1, x2, y2 int) *Line
  • func (l *Line) Contains(p Position) bool
  • func (l1 *Line) Intersect(l2 *Line) (Position, error)
  • func (l1 *Line) IntersectSegment(l2 *Line) (Position, error)
  • func (l1 *Line) String() string
• type Position
  • func (p Position) Above(q Position) bool
  • func (p Position) Below(q Position) bool
  • func (p Position) Distance(q Position) float64
  • func (p Position) Equals(q Position) bool
  • func (p Position) LeftOf(q Position) bool
  • func (p Position) RightOf(q Position) bool
  • func (p Position) String() string
  • func (p Position) XY() (int, int)
  • func (p Position) XYfloat64() (float64, float64)
• type Rect

Types

type Line

type Line struct {
	Start, End Position
}

func NewLine

func NewLine(x1, y1, x2, y2 int) *Line

func (*Line) Contains

func (l *Line) Contains(p Position) bool

func (*Line) Intersect

func (l1 *Line) Intersect(l2 *Line) (Position, error)

Intersect returns the position if two lines intersect. https://en.wikipedia.org/wiki/Line-line_intersection

func (*Line) IntersectSegment

func (l1 *Line) IntersectSegment(l2 *Line) (Position, error)

IntersectSegment returns position where lines intersect. http://geomalgorithms.com/a05-_intersect-1.html#intersect2D_2Segments()

func (*Line) String

func (l1 *Line) String() string

type Position

type Position struct {
	X, Y int
}

func (Position) Above

func (p Position) Above(q Position) bool

func (Position) Below

func (p Position) Below(q Position) bool

func (Position) Distance

func (p Position) Distance(q Position) float64

func (Position) Equals

func (p Position) Equals(q Position) bool

func (Position) LeftOf

func (p Position) LeftOf(q Position) bool

func (Position) RightOf

func (p Position) RightOf(q Position) bool

func (Position) String

func (p Position) String() string

func (Position) XY

func (p Position) XY() (int, int)

func (Position) XYfloat64

func (p Position) XYfloat64() (float64, float64)

type Rect

type Rect struct {
	TopLeft     Position
	BottomRight Position
}