PrimitiveMesh

Inherits: Mesh < Resource < RefCounted < Object

Inherited By: BoxMesh, CapsuleMesh, CylinderMesh, PlaneMesh, PointMesh, PrismMesh, RibbonTrailMesh, SphereMesh, TextMesh, TorusMesh, TubeTrailMesh

Base class for all primitive meshes. Handles applying a Material to a primitive mesh.

Description

Base class for all primitive meshes. Handles applying a Material to a primitive mesh. Examples include BoxMesh, CapsuleMesh, CylinderMesh, PlaneMesh, PrismMesh, and SphereMesh.

Properties

bool	add_uv2	false
AABB	custom_aabb	AABB(0, 0, 0, 0, 0, 0)
bool	flip_faces	false
Material	material
float	uv2_padding	2.0

Methods

Array	_create_mesh_array() virtual const
Array	get_mesh_arrays() const
void	request_update()

---

Property Descriptions

bool add_uv2 = false 🔗

• void set_add_uv2(value: bool)

• bool get_add_uv2()

If set, generates UV2 UV coordinates applying a padding using the uv2_padding setting. UV2 is needed for lightmapping.

---

AABB custom_aabb = AABB(0, 0, 0, 0, 0, 0) 🔗

• void set_custom_aabb(value: AABB)

• AABB get_custom_aabb()

Overrides the AABB with one defined by user for use with frustum culling. Especially useful to avoid unexpected culling when using a shader to offset vertices.

---

bool flip_faces = false 🔗

• void set_flip_faces(value: bool)

• bool get_flip_faces()

If set, the order of the vertices in each triangle are reversed resulting in the backside of the mesh being drawn.

This gives the same result as using BaseMaterial3D.CULL_FRONT in BaseMaterial3D.cull_mode.

---

Material material 🔗

• void set_material(value: Material)

• Material get_material()

The current Material of the primitive mesh.

---

float uv2_padding = 2.0 🔗

• void set_uv2_padding(value: float)

• float get_uv2_padding()

If add_uv2 is set, specifies the padding in pixels applied along seams of the mesh. Lower padding values allow making better use of the lightmap texture (resulting in higher texel density), but may introduce visible lightmap bleeding along edges.

If the size of the lightmap texture can't be determined when generating the mesh, UV2 is calculated assuming a texture size of 1024x1024.

---

Method Descriptions

Array _create_mesh_array() virtual const 🔗

Override this method to customize how this primitive mesh should be generated. Should return an Array where each element is another Array of values required for the mesh (see the ArrayType constants).

---

Array get_mesh_arrays() const 🔗

Returns mesh arrays used to constitute surface of Mesh. The result can be passed to ArrayMesh.add_surface_from_arrays to create a new surface. For example:

var c = CylinderMesh.new()
var arr_mesh = ArrayMesh.new()
arr_mesh.add_surface_from_arrays(Mesh.PRIMITIVE_TRIANGLES, c.get_mesh_arrays())

---

void request_update() 🔗

Request an update of this primitive mesh based on its properties.