normals

Documentation

Index

• func Fill(img draw.Image)
• func FromHeightmap(heightmap image.Image) *image.RGBA
• type Direction
• type Line
  • func (l Line) Dir() vector2.Float64
  • func (l Line) Round(src draw.Image)
• type Sphere
  • func (s Sphere) Draw(src draw.Image)

Functions

func Fill

func Fill(img draw.Image)

func FromHeightmap

func FromHeightmap(heightmap image.Image) *image.RGBA

https://stackoverflow.com/questions/5281261/generating-a-normal-map-from-a-height-map

Types

type Direction

type Direction int

const (
	Additive Direction = iota
	Subtractive
)

type Line

type Line struct {
	Start           vector2.Float64
	End             vector2.Float64
	Width           float64
	NormalDirection Direction
}

func (Line) Dir

func (l Line) Dir() vector2.Float64

Dir is end point - starting point

func (Line) Round

func (l Line) Round(src draw.Image)

type Sphere

type Sphere struct {
	Center    vector2.Float64
	Radius    float64
	Direction Direction
}

func (Sphere) Draw

func (s Sphere) Draw(src draw.Image)