egeom

Documentation

Index

• Variables
• type Padding
  • func NewPaddingFixed(x, y int) Padding
  • func NewPaddingNone() Padding
  • func NewPaddingRatio(rx, ry float64) Padding
• type Point
  • func NewPoint(x, y int) Point
  • func NewPointFixed26(q fixed.Point26_6) Point
  • func NewPointFixed52(q fixed.Point52_12) Point
  • func NewPointImage(q image.Point) Point
• type Position
  • func ParsePosition(p string) (Position, eoutcome.ParseOutcome)
  • func (z Position) Locate(base, obj Rectangle, padding Padding) Point
• type Rectangle
  • func NewRectangle(location Point, width, height int) Rectangle
  • func NewRectangleFixed26(q fixed.Rectangle26_6) Rectangle
  • func NewRectangleFixed52(q fixed.Rectangle52_12) Rectangle
  • func NewRectangleImage(r image.Rectangle) Rectangle

Variables

var (
	ZeroPoint = NewPoint(0, 0)
)

Types

type Padding

type Padding interface {
	Define(obj Rectangle) Point
}

func NewPaddingFixed

func NewPaddingFixed(x, y int) Padding

func NewPaddingNone

func NewPaddingNone() Padding

func NewPaddingRatio

func NewPaddingRatio(rx, ry float64) Padding

type Point

type Point interface {
	X() int
	Y() int

	Add(x, y int) Point
	AddPoint(q Point) Point
	Sub(x, y int) Point
	SubPoint(q Point) Point

	Equals(q Point) bool

	Fixed26() fixed.Point26_6
	Fixed52() fixed.Point52_12
	ImagePoint() image.Point
}

func NewPoint

func NewPoint(x, y int) Point

func NewPointFixed26

func NewPointFixed26(q fixed.Point26_6) Point

func NewPointFixed52

func NewPointFixed52(q fixed.Point52_12) Point

func NewPointImage

func NewPointImage(q image.Point) Point

type Position

type Position int

const (
	PositionUndefined Position = iota
	PositionTopLeft
	PositionTopCenter
	PositionTopRight
	PositionCenterLeft
	PositionCenter
	PositionCenterRight
	PositionBottomLeft
	PositionBottomCenter
	PositionBottomRight
)

func ParsePosition

func ParsePosition(p string) (Position, eoutcome.ParseOutcome)

func (Position) Locate

func (z Position) Locate(base, obj Rectangle, padding Padding) Point

Locate defines top-left corner of obj location. Padding ignored if a position is center. Returns (0, 0) if undefined position

type Rectangle

type Rectangle interface {
	X() int
	Y() int
	Width() int
	Height() int

	Equals(q Rectangle) bool

	TopLeft() Point
	TopCenter() Point
	TopRight() Point
	CenterLeft() Point
	Center() Point
	CenterRight() Point
	BottomLeft() Point
	BottomCenter() Point
	BottomRight() Point

	Fixed26() fixed.Rectangle26_6
	Fixed52() fixed.Rectangle52_12
	ImageRect() image.Rectangle
}

func NewRectangle

func NewRectangle(location Point, width, height int) Rectangle

func NewRectangleFixed26

func NewRectangleFixed26(q fixed.Rectangle26_6) Rectangle

func NewRectangleFixed52

func NewRectangleFixed52(q fixed.Rectangle52_12) Rectangle

func NewRectangleImage

func NewRectangleImage(r image.Rectangle) Rectangle