Class Noise

    • Constructor Summary

      Constructors 
      Constructor Description
      Noise()  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      float evaluate​(float x)
      Compute 1-dimensional Perlin noise.
      float evaluate​(float x, float y)
      Compute 2-dimensional Perlin noise.
      float evaluate​(float x, float y, float z)
      Compute 3-dimensional Perlin noise.
      static float[] findRange​(Function1D f, float[] minmax)
      Returns the minimum and maximum of a number of random values of the given function.
      static float[] findRange​(Function2D f, float[] minmax)
      Returns the minimum and maximum of a number of random values of the given function.
      static float lerp​(float t, float a, float b)  
      static float noise1​(float x)
      Compute 1-dimensional Perlin noise.
      static float noise2​(float x, float y)
      Compute 2-dimensional Perlin noise.
      static float noise3​(float x, float y, float z)
      Compute 3-dimensional Perlin noise.
      static float turbulence2​(float x, float y, float octaves)
      Compute turbulence using Perlin noise.
      static float turbulence3​(float x, float y, float z, float octaves)
      Compute turbulence using Perlin noise.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • Noise

        public Noise()
    • Method Detail

      • evaluate

        public float evaluate​(float x)
        Compute 1-dimensional Perlin noise.
        Specified by:
        evaluate in interface Function1D
        Parameters:
        x - the x value
        Returns:
        noise value at x in the range -1..1
      • evaluate

        public float evaluate​(float x,
                              float y)
        Compute 2-dimensional Perlin noise.
        Specified by:
        evaluate in interface Function2D
        Parameters:
        x - the x coordinate
        y - the y coordinate
        Returns:
        noise value at (x,y)
      • evaluate

        public float evaluate​(float x,
                              float y,
                              float z)
        Compute 3-dimensional Perlin noise.
        Specified by:
        evaluate in interface Function3D
        Parameters:
        x - the x coordinate
        y - the y coordinate
        y - the y coordinate
        Returns:
        noise value at (x,y,z)
      • turbulence2

        public static float turbulence2​(float x,
                                        float y,
                                        float octaves)
        Compute turbulence using Perlin noise.
        Parameters:
        x - the x value
        y - the y value
        octaves - number of octaves of turbulence
        Returns:
        turbulence value at (x,y)
      • turbulence3

        public static float turbulence3​(float x,
                                        float y,
                                        float z,
                                        float octaves)
        Compute turbulence using Perlin noise.
        Parameters:
        x - the x value
        y - the y value
        z - the z value
        octaves - number of octaves of turbulence
        Returns:
        turbulence value at (x,y,z)
      • noise1

        public static float noise1​(float x)
        Compute 1-dimensional Perlin noise.
        Parameters:
        x - the x value
        Returns:
        noise value at x in the range -1..1
      • noise2

        public static float noise2​(float x,
                                   float y)
        Compute 2-dimensional Perlin noise.
        Parameters:
        x - the x coordinate
        y - the y coordinate
        Returns:
        noise value at (x,y)
      • noise3

        public static float noise3​(float x,
                                   float y,
                                   float z)
        Compute 3-dimensional Perlin noise.
        Parameters:
        x - the x coordinate
        y - the y coordinate
        z - the z coordinate
        Returns:
        noise value at (x,y,z)
      • lerp

        public static float lerp​(float t,
                                 float a,
                                 float b)
      • findRange

        public static float[] findRange​(Function1D f,
                                        float[] minmax)
        Returns the minimum and maximum of a number of random values of the given function. This is useful for making some stab at normalising the function.
        Parameters:
        f - The 1D function
        minmax - An array of two floats
        Returns:
        The minimum and maximum
      • findRange

        public static float[] findRange​(Function2D f,
                                        float[] minmax)
        Returns the minimum and maximum of a number of random values of the given function. This is useful for making some stab at normalising the function.
        Parameters:
        f - The two dimensional function
        minmax - An array of two floats
        Returns:
        The minimum and maximum