Fractal Class

Delta Engine Documentation

Calculates mandelbrot fractal values with doubles (very fast in C# with some optimizations). Should be called in parallel. Obviously keeping the maxIterations low yields in the fastest results, but the fractals become more interesting and zoom-able if high values are used. View code on GitHub

Inheritance Hierarchy

System Object
FractalZoomer Fractal

Namespace: FractalZoomer
Assembly: FractalZoomer (in FractalZoomer.exe) Version: 1.1.1.0 (1.1.1)

Syntax

C++

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public class Fractal

public class Fractal

Public Class Fractal

Public Class Fractal

public ref class Fractal

public ref class Fractal

type Fractal =  class end

type Fractal =  class end

The Fractal type exposes the following members.

Constructors

	Name	Description
	Fractal	Initializes a new instance of the Fractal class

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Methods

	Name	Description
	GetColorIndexFromIterationsNeeded

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Remarks

Tests: FractalZoomer.Tests.FractalTests

Examples

4 unit tests call FractalZoomer.Fractal

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[Test]
public void AnythingOutsideTheRadiusTwoHasNoIterations()
{
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(3, 0));
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(-2, 0));
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(0, 2));
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(0, -100));
}

[Test]
public void AnythingOutsideTheRadiusTwoHasNoIterations()
{
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(3, 0));
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(-2, 0));
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(0, 2));
    Assert.AreEqual(0, fractal.GetColorIndexFromIterationsNeeded(0, -100));
}

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[Test]
public void MostNumbersCloseToTheRadiusOfTwoHaveLowValues()
{
    Assert.AreEqual(7, fractal.GetColorIndexFromIterationsNeeded(1.977371f, 0.3f));
    Assert.AreEqual(28, fractal.GetColorIndexFromIterationsNeeded(-1.8f, 0.7f));
    Assert.AreEqual(11, fractal.GetColorIndexFromIterationsNeeded(0, 1.9f));
    Assert.AreEqual(17, fractal.GetColorIndexFromIterationsNeeded(0, -1.7f));
    Assert.AreEqual(19, fractal.GetColorIndexFromIterationsNeeded(-1.54f, 1.2f));
    Assert.AreEqual(24, fractal.GetColorIndexFromIterationsNeeded(-1.4f, -1.1f));
    Assert.AreEqual(17, fractal.GetColorIndexFromIterationsNeeded(1f, 1f));
}

[Test]
public void MostNumbersCloseToTheRadiusOfTwoHaveLowValues()
{
    Assert.AreEqual(7, fractal.GetColorIndexFromIterationsNeeded(1.977371f, 0.3f));
    Assert.AreEqual(28, fractal.GetColorIndexFromIterationsNeeded(-1.8f, 0.7f));
    Assert.AreEqual(11, fractal.GetColorIndexFromIterationsNeeded(0, 1.9f));
    Assert.AreEqual(17, fractal.GetColorIndexFromIterationsNeeded(0, -1.7f));
    Assert.AreEqual(19, fractal.GetColorIndexFromIterationsNeeded(-1.54f, 1.2f));
    Assert.AreEqual(24, fractal.GetColorIndexFromIterationsNeeded(-1.4f, -1.1f));
    Assert.AreEqual(17, fractal.GetColorIndexFromIterationsNeeded(1f, 1f));
}

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[Test]
public void SomeNumbersInsideTheRadiusHaveHigherValues()
{
    Assert.AreEqual(37, fractal.GetColorIndexFromIterationsNeeded(-1f, 1f));
    Assert.AreEqual(32, fractal.GetColorIndexFromIterationsNeeded(0.9f, 0.0f));
}

[Test]
public void SomeNumbersInsideTheRadiusHaveHigherValues()
{
    Assert.AreEqual(37, fractal.GetColorIndexFromIterationsNeeded(-1f, 1f));
    Assert.AreEqual(32, fractal.GetColorIndexFromIterationsNeeded(0.9f, 0.0f));
}