package f32

import "gioui.org/internal/f32"

Package f32 is an internal version of the public package f32 with extra types for internal use.

Index ¶

• Variables
• type Affine2D
• type Point
• func FPt(p image.Point) Point
• type Rectangle
• func FRect(r image.Rectangle) Rectangle
• func Rect(x0, y0, x1, y1 float32) Rectangle
• func (r Rectangle) Add(p Point) Rectangle
• func (r Rectangle) Canon() Rectangle
• func (r Rectangle) Dx() float32
• func (r Rectangle) Dy() float32
• func (r Rectangle) Empty() bool
• func (r Rectangle) Intersect(s Rectangle) Rectangle
• func (r Rectangle) Round() image.Rectangle
• func (r Rectangle) Size() Point
• func (r Rectangle) String() string
• func (r Rectangle) Sub(p Point) Rectangle
• func (r Rectangle) Union(s Rectangle) Rectangle

Variables ¶

var NewAffine2D = f32.NewAffine2D

var Pt = f32.Pt

Pt is shorthand for Point{X: x, Y: y}.

Types ¶

type Affine2D ¶

type Affine2D = f32.Affine2D

type Point ¶

type Point = f32.Point

func FPt ¶

func FPt(p image.Point) Point

Fpt converts an point to a f32.Point.

type Rectangle ¶

type Rectangle struct {
	Min, Max Point
}

A Rectangle contains the points (X, Y) where Min.X <= X < Max.X, Min.Y <= Y < Max.Y.

func FRect ¶

func FRect(r image.Rectangle) Rectangle

fRect converts a rectangle to a f32internal.Rectangle.

func Rect ¶

func Rect(x0, y0, x1, y1 float32) Rectangle

Rect is a shorthand for Rectangle{Point{x0, y0}, Point{x1, y1}}. The returned Rectangle has x0 and y0 swapped if necessary so that it's correctly formed.

func (Rectangle) Add ¶

func (r Rectangle) Add(p Point) Rectangle

Add offsets r with the vector p.

func (Rectangle) Canon ¶

func (r Rectangle) Canon() Rectangle

Canon returns the canonical version of r, where Min is to the upper left of Max.

func (Rectangle) Dx ¶

func (r Rectangle) Dx() float32

Dx returns r's width.

func (Rectangle) Dy ¶

func (r Rectangle) Dy() float32

Dy returns r's Height.

func (Rectangle) Empty ¶

func (r Rectangle) Empty() bool

Empty reports whether r represents the empty area.

func (Rectangle) Intersect ¶

func (r Rectangle) Intersect(s Rectangle) Rectangle

Intersect returns the intersection of r and s.

func (Rectangle) Round ¶

func (r Rectangle) Round() image.Rectangle

Round returns the smallest integer rectangle that contains r.

func (Rectangle) Size ¶

func (r Rectangle) Size() Point

Size returns r's width and height.

func (Rectangle) String ¶

func (r Rectangle) String() string

String return a string representation of r.

func (Rectangle) Sub ¶

func (r Rectangle) Sub(p Point) Rectangle

Sub offsets r with the vector -p.

func (Rectangle) Union ¶

func (r Rectangle) Union(s Rectangle) Rectangle

Union returns the union of r and s.

Source Files ¶

f32.go