Class HoneyNoise

java.lang.Object
com.github.yellowstonegames.grid.HoneyNoise
All Implemented Interfaces:
INoise, Externalizable, Serializable
public class HoneyNoise extends Object implements INoise
An INoise implementation that combines and accentuates SimplexNoise and ValueNoise. This allows its sharpness to be adjusted if you want more or less distinct high/low areas.
See Also:

  • Nested Class Summary

    Nested classes/interfaces inherited from interface INoise

    INoise.Serializer

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final HoneyNoise
    instance
     
    long
    seed
     
    float
    sharpness
    Affects how distinct high and low areas should be from each other.

  • Constructor Summary

    Constructors
    Constructor
    Description
    HoneyNoise()
     
    HoneyNoise(long seed)
     
    HoneyNoise(long seed, float sharpness)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    HoneyNoise
    copy()
    Creates a copy of this INoise, which should be a deep copy for any mutable state but can be shallow for immutable types such as functions.
    boolean
    equals(Object o)
     
    int
    getMaxDimension()
    Gets the maximum dimension supported by this generator, such as 2 for a generator that only is defined for flat surfaces, or 7 for one that is defined up to the highest dimension this interface knows about (7D).
    int
    getMinDimension()
    Gets the minimum dimension supported by this generator, such as 2 for a generator that only is defined for flat surfaces, or 3 for one that is only defined for 3D or higher-dimensional spaces.
    float
    getNoise(float x, float y)
    Gets 2D noise with a default or pre-set seed.
    float
    getNoise(float x, float y, float z)
    Gets 3D noise with a default or pre-set seed.
    float
    getNoise(float x, float y, float z, float w)
    Gets 4D noise with a default or pre-set seed.
    float
    getNoise(float x, float y, float z, float w, float u)
    Gets 5D noise with a default or pre-set seed.
    float
    getNoise(float x, float y, float z, float w, float u, float v)
    Gets 6D noise with a default or pre-set seed.
    float
    getNoiseWithSeed(float x, float y, float z, float w, float u, float v, long seed)
    Gets 6D noise with a specific seed.
    float
    getNoiseWithSeed(float x, float y, float z, float w, float u, long seed)
    Gets 5D noise with a specific seed.
    float
    getNoiseWithSeed(float x, float y, float z, float w, long seed)
    Gets 4D noise with a specific seed.
    float
    getNoiseWithSeed(float x, float y, float z, long seed)
    Gets 3D noise with a specific seed.
    float
    getNoiseWithSeed(float x, float y, long seed)
    Gets 2D noise with a specific seed.
    long
    getSeed()
    Gets the current seed of the generator, as a long even if the seed is stored internally as an int.
    float
    getSharpness()
     
    String
    getTag()
    Returns a typically-four-character String constant that should uniquely identify this INoise as well as possible.
    boolean
    hasEfficientSetSeed()
    Returns true if this generator can be seeded with INoise.setSeed(long) during each call to obtain noise, or false if calling setSeed() is slow enough or allocates enough that alternative approaches should be used.
    int
    hashCode()
     
    static HoneyNoise
    recreateFromString(String data)
     
    void
    setSeed(long seed)
    Sets the seed to the given long, if long seeds are supported, or (int)seed if only int seeds are supported.
    void
    setSharpness(float sharpness)
     
    HoneyNoise
    stringDeserialize(String data)
    Given a serialized String produced by INoise.stringSerialize(), reassigns this INoise to have the described state from the given String.
    String
    stringSerialize()
    Produces a String that describes everything needed to recreate this INoise in full.
    String
    toString()
     

    Methods inherited from class Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

    Methods inherited from interface INoise

    getNoise, getNoiseWithSeed, readExternal, writeExternal

  • Field Details

    • instance

      public static final HoneyNoise instance

    • seed

      public long seed

    • sharpness

      public float sharpness
      Affects how distinct high and low areas should be from each other. Should be between 0.0f and 1.0f, both exclusive. The default is 0.6f. If this is assigned 1.0 or greater, calls to any noise methods can sometimes result in division by 0 and an infinite result.

  • Constructor Details

    • HoneyNoise

      public HoneyNoise()

    • HoneyNoise

      public HoneyNoise(long seed)

    • HoneyNoise

      public HoneyNoise(long seed, float sharpness)
      Parameters:
      seed - any int or long; if you pass a long, make sure different seeds will still be different when cast to int
      sharpness - a float between 0.0 and 1.0, both exclusive; higher values result in more distinct high and low areas

  • Method Details

    • getTag

      public String getTag()
      Description copied from interface: INoise
      Returns a typically-four-character String constant that should uniquely identify this INoise as well as possible. If a duplicate tag is already registered and INoise.Serializer.register(INoise) attempts to register the same tag again, a message is printed to System.err. The default implementation returns the String (NO), which is essentially an invalid tag, meant to indicate that this was not fully implemented. Implementing this is required for any usage of Serializer.
      Specified by:
      getTag in interface INoise
      Returns:
      a short String constant that identifies this INoise type

    • stringSerialize

      public String stringSerialize()
      Description copied from interface: INoise
      Produces a String that describes everything needed to recreate this INoise in full. This String can be read back in by INoise.stringDeserialize(String) to reassign the described state to another INoise. The syntax here should always start and end with the ` character, which is used by INoise.stringDeserialize(String) to identify the portion of a String that can be read back. The ` character should not be otherwise used unless to serialize another INoise that this uses.
      If you use Base to produce String representations for numeric fields in an INoise, Base.BASE10 is strongly recommended; in most cases, you can just use string concatenation with the fields separated by the tilde character, "~". For printing a float field with Base to a StringBuilder sb, use Base.BASE10.appendGeneral(sb, field).
      The default implementation throws an UnsupportedOperationException only. INoise classes do not have to implement any serialization methods, but they aren't serializable by the methods in this class or in INoise.Serializer unless they do implement this, INoise.getTag(), INoise.stringDeserialize(String), and INoise.copy().
      Specified by:
      stringSerialize in interface INoise
      Returns:
      a String that describes this INoise for serialization

    • stringDeserialize

      public HoneyNoise stringDeserialize(String data)
      Description copied from interface: INoise
      Given a serialized String produced by INoise.stringSerialize(), reassigns this INoise to have the described state from the given String. The serialized String must have been produced by the same class as this object is.
      Any class that implements INoise.stringSerialize() should also implement this method in a compatible way. Using base-10 is expected for most uses. Using Base.BASE10.readFloat(data, start, end) may be useful to parse only the part of data between start and end.
      The default implementation throws an UnsupportedOperationException only. INoise classes do not have to implement any serialization methods, but they aren't serializable by the methods in this class or in INoise.Serializer unless they do implement this, INoise.getTag(), INoise.stringSerialize(), and INoise.copy().
      Specified by:
      stringDeserialize in interface INoise
      Parameters:
      data - a serialized String, typically produced by INoise.stringSerialize()
      Returns:
      this INoise, after being modified (if possible)

    • recreateFromString

      public static HoneyNoise recreateFromString(String data)

    • copy

      public HoneyNoise copy()
      Description copied from interface: INoise
      Creates a copy of this INoise, which should be a deep copy for any mutable state but can be shallow for immutable types such as functions. This almost always just calls a copy constructor.
      The default implementation throws an UnsupportedOperationException only. Implementors are strongly encouraged to implement this in general, and that is required to use an INoise class with INoise.Serializer.
      Specified by:
      copy in interface INoise
      Returns:
      a copy of this INoise

    • equals

      public boolean equals(Object o)
      Specified by:
      equals in interface INoise
      Overrides:
      equals in class Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • getMinDimension

      public int getMinDimension()
      Description copied from interface: INoise
      Gets the minimum dimension supported by this generator, such as 2 for a generator that only is defined for flat surfaces, or 3 for one that is only defined for 3D or higher-dimensional spaces.
      Specified by:
      getMinDimension in interface INoise
      Returns:
      the minimum supported dimension, from 2 to 7 inclusive

    • getMaxDimension

      public int getMaxDimension()
      Description copied from interface: INoise
      Gets the maximum dimension supported by this generator, such as 2 for a generator that only is defined for flat surfaces, or 7 for one that is defined up to the highest dimension this interface knows about (7D).
      Specified by:
      getMaxDimension in interface INoise
      Returns:
      the maximum supported dimension, from 2 to 7 inclusive

    • hasEfficientSetSeed

      public boolean hasEfficientSetSeed()
      Description copied from interface: INoise
      Returns true if this generator can be seeded with INoise.setSeed(long) during each call to obtain noise, or false if calling setSeed() is slow enough or allocates enough that alternative approaches should be used. You can always call setSeed() on your own, but generators that don't have any seed won't do anything. Generators that return false for this method will generally behave differently when comparing how INoise.getNoiseWithSeed(float, float, long) changes the seed and how setSeed() does.
      Specified by:
      hasEfficientSetSeed in interface INoise
      Returns:
      whether INoise.setSeed(long) should be efficient to call in every INoise.getNoiseWithSeed(float, float, long) call

    • getNoise

      public float getNoise(float x, float y)
      Description copied from interface: INoise
      Gets 2D noise with a default or pre-set seed.
      Specified by:
      getNoise in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoise

      public float getNoise(float x, float y, float z)
      Description copied from interface: INoise
      Gets 3D noise with a default or pre-set seed.
      Specified by:
      getNoise in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoise

      public float getNoise(float x, float y, float z, float w)
      Description copied from interface: INoise
      Gets 4D noise with a default or pre-set seed.
      Specified by:
      getNoise in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      w - w position; can be any finite float
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoise

      public float getNoise(float x, float y, float z, float w, float u)
      Description copied from interface: INoise
      Gets 5D noise with a default or pre-set seed.
      Specified by:
      getNoise in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      w - w position; can be any finite float
      u - u position; can be any finite float
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoise

      public float getNoise(float x, float y, float z, float w, float u, float v)
      Description copied from interface: INoise
      Gets 6D noise with a default or pre-set seed.
      Specified by:
      getNoise in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      w - w position; can be any finite float
      u - u position; can be any finite float
      v - v position; can be any finite float
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • setSeed

      public void setSeed(long seed)
      Description copied from interface: INoise
      Sets the seed to the given long, if long seeds are supported, or (int)seed if only int seeds are supported. If this generator cannot be seeded, this should do nothing, and should not throw an exception. If this operation allocates or is time-intensive, then INoise.hasEfficientSetSeed() should return false. That method is checked in INoise.getNoiseWithSeed(float, float, long), and if it returns false, the noise call will avoid calling setSeed(). You can always at least try to set the seed, even if it does nothing or is heavy on performance, and doing it a few times each frame should typically be fine for any generator. In the case this is called thousands of times each frame, check INoise.hasEfficientSetSeed().
      Specified by:
      setSeed in interface INoise
      Parameters:
      seed - a long or int seed, with no restrictions unless otherwise documented

    • getSeed

      public long getSeed()
      Description copied from interface: INoise
      Gets the current seed of the generator, as a long even if the seed is stored internally as an int. This must be implemented, but if the generator doesn't have a seed that can be expressed as a long (potentially using BitConversion.floatToIntBits(float)), this can just return 0.
      Specified by:
      getSeed in interface INoise
      Returns:
      the current seed, as a long

    • getSharpness

      public float getSharpness()

    • setSharpness

      public void setSharpness(float sharpness)

    • getNoiseWithSeed

      public float getNoiseWithSeed(float x, float y, long seed)
      Description copied from interface: INoise
      Gets 2D noise with a specific seed. If the seed cannot be retrieved or changed per-call, then this falls back to changing the position instead of the seed; you can check if this will happen with INoise.hasEfficientSetSeed().
      Specified by:
      getNoiseWithSeed in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      seed - can be any long
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoiseWithSeed

      public float getNoiseWithSeed(float x, float y, float z, long seed)
      Description copied from interface: INoise
      Gets 3D noise with a specific seed. If the seed cannot be retrieved or changed per-call, then this falls back to changing the position instead of the seed; you can check if this will happen with INoise.hasEfficientSetSeed().
      Specified by:
      getNoiseWithSeed in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      seed - can be any long
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoiseWithSeed

      public float getNoiseWithSeed(float x, float y, float z, float w, long seed)
      Description copied from interface: INoise
      Gets 4D noise with a specific seed. If the seed cannot be retrieved or changed per-call, then this falls back to changing the position instead of the seed; you can check if this will happen with INoise.hasEfficientSetSeed().
      Specified by:
      getNoiseWithSeed in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      w - w position; can be any finite float
      seed - can be any long
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoiseWithSeed

      public float getNoiseWithSeed(float x, float y, float z, float w, float u, long seed)
      Description copied from interface: INoise
      Gets 5D noise with a specific seed. If the seed cannot be retrieved or changed per-call, then this falls back to changing the position instead of the seed; you can check if this will happen with INoise.hasEfficientSetSeed().
      Specified by:
      getNoiseWithSeed in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      w - w position; can be any finite float
      u - u position; can be any finite float
      seed - can be any long
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive

    • getNoiseWithSeed

      public float getNoiseWithSeed(float x, float y, float z, float w, float u, float v, long seed)
      Description copied from interface: INoise
      Gets 6D noise with a specific seed. If the seed cannot be retrieved or changed per-call, then this falls back to changing the position instead of the seed; you can check if this will happen with INoise.hasEfficientSetSeed().
      Specified by:
      getNoiseWithSeed in interface INoise
      Parameters:
      x - x position; can be any finite float
      y - y position; can be any finite float
      z - z position; can be any finite float
      w - w position; can be any finite float
      u - u position; can be any finite float
      v - v position; can be any finite float
      seed - can be any long
      Returns:
      a noise value between -1.0f and 1.0f, both inclusive