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feat: godot-engine-source-4.3-stable

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Jan van der Weide 2025-01-17 16:36:38 +01:00
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engine/doc/classes/HeightMapShape3D.xml Normal file
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<?xml version="1.0" encoding="UTF-8" ?>
<class name="HeightMapShape3D" inherits="Shape3D" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
A 3D height map shape used for physics collision.
</brief_description>
<description>
A 3D heightmap shape, intended for use in physics. Usually used to provide a shape for a [CollisionShape3D]. This is useful for terrain, but it is limited as overhangs (such as caves) cannot be stored. Holes in a [HeightMapShape3D] are created by assigning very low values to points in the desired area.
[b]Performance:[/b] [HeightMapShape3D] is faster to check collisions against than [ConcavePolygonShape3D], but it is significantly slower than primitive shapes like [BoxShape3D].
A heightmap collision shape can also be build by using an [Image] reference:
[codeblocks]
[gdscript]
var heightmap_texture: Texture = ResourceLoader.load("res://heightmap_image.exr")
var heightmap_image: Image = heightmap_texture.get_image()
heightmap_image.convert(Image.FORMAT_RF)
var height_min: float = 0.0
var height_max: float = 10.0
update_map_data_from_image(heightmap_image, height_min, height_max)
[/gdscript]
[/codeblocks]
</description>
<tutorials>
</tutorials>
<methods>
<method name="get_max_height" qualifiers="const">
<return type="float" />
<description>
Returns the largest height value found in [member map_data]. Recalculates only when [member map_data] changes.
</description>
</method>
<method name="get_min_height" qualifiers="const">
<return type="float" />
<description>
Returns the smallest height value found in [member map_data]. Recalculates only when [member map_data] changes.
</description>
</method>
<method name="update_map_data_from_image">
<return type="void" />
<param index="0" name="image" type="Image" />
<param index="1" name="height_min" type="float" />
<param index="2" name="height_max" type="float" />
<description>
Updates [member map_data] with data read from an [Image] reference. Automatically resizes heightmap [member map_width] and [member map_depth] to fit the full image width and height.
The image needs to be in either [constant Image.FORMAT_RF] (32 bit), [constant Image.FORMAT_RH] (16 bit), or [constant Image.FORMAT_R8] (8 bit).
Each image pixel is read in as a float on the range from [code]0.0[/code] (black pixel) to [code]1.0[/code] (white pixel). This range value gets remapped to [param height_min] and [param height_max] to form the final height value.
</description>
</method>
</methods>
<members>
<member name="map_data" type="PackedFloat32Array" setter="set_map_data" getter="get_map_data" default="PackedFloat32Array(0, 0, 0, 0)">
Height map data. The array's size must be equal to [member map_width] multiplied by [member map_depth].
</member>
<member name="map_depth" type="int" setter="set_map_depth" getter="get_map_depth" default="2">
Number of vertices in the depth of the height map. Changing this will resize the [member map_data].
</member>
<member name="map_width" type="int" setter="set_map_width" getter="get_map_width" default="2">
Number of vertices in the width of the height map. Changing this will resize the [member map_data].
</member>
</members>
</class>