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909acac329
Add scene side discrete level of detail. New node `LOD` for UI, and `LODManager` within `World` for automatically updating child visibilities based on distance from cameras.
28 lines
1.5 KiB
XML
28 lines
1.5 KiB
XML
<?xml version="1.0" encoding="UTF-8" ?>
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<class name="LOD" inherits="Spatial" version="3.6" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
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<brief_description>
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Provides discrete level of detail.
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</brief_description>
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<description>
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Automatically hides and shows [Spatial] children depending on the distance from the closest [Camera] to the [LOD] node. Child nodes that don't inherit from [Spatial] are ignored by the LOD system.
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Children are shown in order with the first children shown when closest to the [Camera], and the latter children shown when further away.
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The threshold distances for changes are determined by [member Spatial.lod_range].
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For example, a first child with a range of [code]2[/code] will be shown from distance 0 to 2. A second child with a range of [code]5[/code] will be shown from distance 2 to 7, etc.
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</description>
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<tutorials>
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</tutorials>
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<methods>
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</methods>
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<members>
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<member name="hysteresis" type="float" setter="set_hysteresis" getter="get_hysteresis" default="1.0">
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To prevent flickering at borders, a hysteresis distance will be added to threshold distances when the object is moving away from the [Camera].
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</member>
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<member name="lod_priority" type="int" setter="set_lod_priority" getter="get_lod_priority" default="0">
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Determines the rate at which level of detail will be updated.
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Higher priorities will update faster, but use more CPU.
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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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