041fe20f64
The previous RGBA format included unused RGB data. Using the LA8 format removes the need to store the extra data. The Docs have been updated to reflect the format changes.
135 lines
4.9 KiB
XML
135 lines
4.9 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="OpenSimplexNoise" inherits="Resource" version="4.0">
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<brief_description>
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Noise generator based on Open Simplex.
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</brief_description>
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<description>
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This resource allows you to configure and sample a fractal noise space. Here is a brief usage example that configures an OpenSimplexNoise and gets samples at various positions and dimensions:
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[codeblock]
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var noise = OpenSimplexNoise.new()
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# Configure
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noise.seed = randi()
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noise.octaves = 4
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noise.period = 20.0
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noise.persistence = 0.8
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# Sample
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print("Values:")
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print(noise.get_noise_2d(1.0, 1.0))
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print(noise.get_noise_3d(0.5, 3.0, 15.0))
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print(noise.get_noise_4d(0.5, 1.9, 4.7, 0.0))
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[/codeblock]
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</description>
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<tutorials>
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</tutorials>
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<methods>
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<method name="get_image" qualifiers="const">
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<return type="Image">
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</return>
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<argument index="0" name="width" type="int">
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</argument>
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<argument index="1" name="height" type="int">
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</argument>
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<description>
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Generate a noise image in [constant Image.FORMAT_L8] format with the requested [code]width[/code] and [code]height[/code], based on the current noise parameters.
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</description>
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</method>
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<method name="get_noise_1d" qualifiers="const">
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<return type="float">
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</return>
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<argument index="0" name="x" type="float">
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</argument>
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<description>
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Returns the 1D noise value [code][-1,1][/code] at the given x-coordinate.
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[b]Note:[/b] This method actually returns the 2D noise value [code][-1,1][/code] with fixed y-coordinate value 0.0.
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</description>
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</method>
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<method name="get_noise_2d" qualifiers="const">
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<return type="float">
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</return>
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<argument index="0" name="x" type="float">
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</argument>
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<argument index="1" name="y" type="float">
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</argument>
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<description>
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Returns the 2D noise value [code][-1,1][/code] at the given position.
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</description>
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</method>
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<method name="get_noise_2dv" qualifiers="const">
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<return type="float">
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</return>
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<argument index="0" name="pos" type="Vector2">
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</argument>
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<description>
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Returns the 2D noise value [code][-1,1][/code] at the given position.
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</description>
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</method>
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<method name="get_noise_3d" qualifiers="const">
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<return type="float">
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</return>
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<argument index="0" name="x" type="float">
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</argument>
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<argument index="1" name="y" type="float">
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</argument>
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<argument index="2" name="z" type="float">
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</argument>
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<description>
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Returns the 3D noise value [code][-1,1][/code] at the given position.
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</description>
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</method>
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<method name="get_noise_3dv" qualifiers="const">
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<return type="float">
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</return>
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<argument index="0" name="pos" type="Vector3">
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</argument>
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<description>
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Returns the 3D noise value [code][-1,1][/code] at the given position.
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</description>
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</method>
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<method name="get_noise_4d" qualifiers="const">
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<return type="float">
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</return>
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<argument index="0" name="x" type="float">
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</argument>
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<argument index="1" name="y" type="float">
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</argument>
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<argument index="2" name="z" type="float">
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</argument>
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<argument index="3" name="w" type="float">
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</argument>
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<description>
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Returns the 4D noise value [code][-1,1][/code] at the given position.
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</description>
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</method>
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<method name="get_seamless_image" qualifiers="const">
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<return type="Image">
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</return>
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<argument index="0" name="size" type="int">
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</argument>
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<description>
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Generate a tileable noise image in [constant Image.FORMAT_L8] format, based on the current noise parameters. Generated seamless images are always square ([code]size[/code] × [code]size[/code]).
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</description>
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</method>
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</methods>
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<members>
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<member name="lacunarity" type="float" setter="set_lacunarity" getter="get_lacunarity" default="2.0">
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Difference in period between [member octaves].
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</member>
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<member name="octaves" type="int" setter="set_octaves" getter="get_octaves" default="3">
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Number of OpenSimplex noise layers that are sampled to get the fractal noise. Higher values result in more detailed noise but take more time to generate.
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[b]Note:[/b] The maximum allowed value is 9.
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</member>
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<member name="period" type="float" setter="set_period" getter="get_period" default="64.0">
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Period of the base octave. A lower period results in a higher-frequency noise (more value changes across the same distance).
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</member>
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<member name="persistence" type="float" setter="set_persistence" getter="get_persistence" default="0.5">
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Contribution factor of the different octaves. A [code]persistence[/code] value of 1 means all the octaves have the same contribution, a value of 0.5 means each octave contributes half as much as the previous one.
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</member>
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<member name="seed" type="int" setter="set_seed" getter="get_seed" default="0">
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Seed used to generate random values, different seeds will generate different noise maps.
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</member>
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</members>
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<constants>
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</constants>
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</class>
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