HeightMapShape3D

Inherits: Shape3D < Resource < RefCounted < Object

A 3D height map shape used for physics collision.

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.

Performance: 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:

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)

Properties

Methods

Property Descriptions

PackedFloat32Array map_data = PackedFloat32Array(0, 0, 0, 0) 🔗

• void set_map_data(value: PackedFloat32Array)

• PackedFloat32Array get_map_data()

Height map data. The array’s size must be equal to map_width multiplied by map_depth.

Note: The returned array is copied and any changes to it will not update the original property value. See PackedFloat32Array for more details.

int map_depth = 2 🔗

• void set_map_depth(value: int)

• int get_map_depth()

Number of vertices in the depth of the height map. Changing this will resize the map_data.

int map_width = 2 🔗

• void set_map_width(value: int)

• int get_map_width()

Number of vertices in the width of the height map. Changing this will resize the map_data.

Method Descriptions

float get_max_height() const 🔗

Returns the largest height value found in map_data. Recalculates only when map_data changes.

float get_min_height() const 🔗

Returns the smallest height value found in map_data. Recalculates only when map_data changes.

void update_map_data_from_image(image: Image, height_min: float, height_max: float) 🔗

Updates map_data with data read from an Image reference. Automatically resizes heightmap map_width and map_depth to fit the full image width and height.

The image needs to be in either Image.FORMAT_RF (32 bit), Image.FORMAT_RH (16 bit), or Image.FORMAT_R8 (8 bit).

Each image pixel is read in as a float on the range from 0.0 (black pixel) to 1.0 (white pixel). This range value gets remapped to height_min and height_max to form the final height value.

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