image

Documentation

Overview

Package image provides image rendering for the Mandelbrot set.

Index

• func MaxIter(scale float64) int
• func Render(im draw.Image, tsf Transformation, f mandelbrot.Func, clr Colorizer)
• func RenderParallel(im draw.Image, tsf Transformation, f mandelbrot.Func, clr Colorizer)
• func Scale(size image.Point) float64
• type Colorizer
  • func BWColorizer(invert bool) Colorizer
  • func BoundColorizer(bounded, unbounded Colorizer) Colorizer
  • func ColorColorizer(col color.Color) Colorizer
  • func ColorsIterColorizer(cols []color.Color, shift int) Colorizer
• type Transformation
  • func BaseTransformation(im image.Image, rotate, scale float64, translate complex128) Transformation
  • func ImageTransformation(im image.Image) Transformation
  • func RotateTransformation(rotate float64) Transformation
  • func ScaleTransformation(scale float64) Transformation
  • func TranslateTransformation(translate complex128) Transformation

Functions

func MaxIter

func MaxIter(scale float64) int

MaxIter returns the maximum iteration required for the given scale.

func Render

func Render(im draw.Image, tsf Transformation, f mandelbrot.Func, clr Colorizer)

Render renders to an image.

func RenderParallel

func RenderParallel(im draw.Image, tsf Transformation, f mandelbrot.Func, clr Colorizer)

RenderParallel renders to an image in parallel.

func Scale

func Scale(size image.Point) float64

Scale returns the required scale for the given image size.

Types

type Colorizer

type Colorizer func(complex128, mandelbrot.Result) color.Color

Colorizer is a function that returns a color for a point and a result.

func BWColorizer

func BWColorizer(invert bool) Colorizer

BWColorizer returns a Colorizer that uses a black and white color scheme.

func BoundColorizer

func BoundColorizer(bounded, unbounded Colorizer) Colorizer

BoundColorizer returns a Colorizer that uses a bounded color for bounded points and an unbounded color for unbounded points.

func ColorColorizer

func ColorColorizer(col color.Color) Colorizer

ColorColorizer returns a Colorizer that always returns the same color.

func ColorsIterColorizer

func ColorsIterColorizer(cols []color.Color, shift int) Colorizer

ColorsIterColorizer returns a Colorizer that uses a list of colors.

type Transformation

type Transformation func(complex128) complex128

Transformation is a transformation function.

func BaseTransformation

func BaseTransformation(im image.Image, rotate, scale float64, translate complex128) Transformation

BaseTransformation returns a Transformation function for the given parameters.

func ImageTransformation

func ImageTransformation(im image.Image) Transformation

ImageTransformation returns a Transformation function for the given image.

func RotateTransformation

func RotateTransformation(rotate float64) Transformation

RotateTransformation returns a Transformation function for the given rotation.

func ScaleTransformation

func ScaleTransformation(scale float64) Transformation

ScaleTransformation returns a Transformation function for the given scale.

func TranslateTransformation

func TranslateTransformation(translate complex128) Transformation

TranslateTransformation returns a Transformation function for the given translation.