util

Documentation

Index

• Variables
• func DrawArrow(ops *op.Ops, start, end image.Point, squareSize f32.Point, width float32, ...)
• func DrawCircle(ops *op.Ops, rect image.Rectangle, width float32, color color.NRGBA)
• func DrawCross(ops *op.Ops, rect image.Rectangle, width float32, color color.NRGBA)
• func DrawEllipse(ops *op.Ops, rect image.Rectangle, color color.NRGBA)
• func DrawImage(ops *op.Ops, img image.Image, at image.Point, factor f32.Point)
• func DrawPane(ops *op.Ops, rect image.Rectangle, color color.NRGBA)
• func DrawRectangle(ops *op.Ops, rect image.Rectangle, width float32, color color.NRGBA)
• func Floor[F Float](val F) int
• func IsPromotionMove(square chess.Square, piece chess.Piece) bool
• func Min[T constraints.Ordered](a, b T) T
• func OpenImage(filename string) (image.Image, error)
• func PointToSquare(point f32.Point, size float32, flipped bool) chess.Square
• func Rect(origin, size image.Point) image.Rectangle
• func Round[F Float](val F) int
• func SquareColor(square chess.Square) chess.Color
• func SquareToPoint(square chess.Square, size float32, flipped bool) f32.Point
• func ToF32(pt image.Point) f32.Point
• func Transparentize(c color.NRGBA, percent float32) color.NRGBA
• type Float

Variables

var (
	BlackColor  = color.NRGBA{R: 0x00, G: 0x00, B: 0x00, A: 0xFF}
	WhiteColor  = color.NRGBA{R: 0xFF, G: 0xFF, B: 0xFF, A: 0xFF}
	GrayColor   = color.NRGBA{R: 0x80, G: 0x80, B: 0x80, A: 0xFF}
	RedColor    = color.NRGBA{R: 0xC0, G: 0x40, B: 0x40, A: 0xFF}
	YellowColor = color.NRGBA{R: 0xC0, G: 0xC0, B: 0x40, A: 0xFF}
	GreenColor  = color.NRGBA{R: 0x40, G: 0xC0, B: 0x40, A: 0xFF}
	BlueColor   = color.NRGBA{R: 0x40, G: 0x40, B: 0xC0, A: 0xFF}
)

Functions

func DrawArrow

func DrawArrow(ops *op.Ops, start, end image.Point, squareSize f32.Point, width float32, color color.NRGBA)

func DrawCircle

func DrawCircle(ops *op.Ops, rect image.Rectangle, width float32, color color.NRGBA)

func DrawCross

func DrawCross(ops *op.Ops, rect image.Rectangle, width float32, color color.NRGBA)

func DrawEllipse

func DrawEllipse(ops *op.Ops, rect image.Rectangle, color color.NRGBA)

func DrawImage

func DrawImage(ops *op.Ops, img image.Image, at image.Point, factor f32.Point)

func DrawPane

func DrawPane(ops *op.Ops, rect image.Rectangle, color color.NRGBA)

func DrawRectangle

func DrawRectangle(ops *op.Ops, rect image.Rectangle, width float32, color color.NRGBA)

func Floor

func Floor[F Float](val F) int

func IsPromotionMove

func IsPromotionMove(square chess.Square, piece chess.Piece) bool

func Min

func Min[T constraints.Ordered](a, b T) T

func OpenImage

func OpenImage(filename string) (image.Image, error)

func PointToSquare

func PointToSquare(point f32.Point, size float32, flipped bool) chess.Square

func Rect

func Rect(origin, size image.Point) image.Rectangle

func Round

func Round[F Float](val F) int

func SquareColor

func SquareColor(square chess.Square) chess.Color

func SquareToPoint

func SquareToPoint(square chess.Square, size float32, flipped bool) f32.Point

func ToF32

func ToF32(pt image.Point) f32.Point

func Transparentize

func Transparentize(c color.NRGBA, percent float32) color.NRGBA

Types

type Float

type Float interface {
	float32 | float64
}