🝱 Mesh Collection

Mesh Collection DataAsset

The Mesh Collection DataAsset is a list of Meshes with ISM/HISM Descriptors, that comes with all the Asset Collection goodies.

Asset Collection

Table of content

Properties
Individual Entry

Properties

Property	Description
Settings
Collection Tags	A set of unique tags associated with this collection data asset.
Entries	Entries are a list of meshes (soft) references descriptor and their associated shared properties. You really just need to set the Descriptor’ StaticMesh property for it to work.
Do Not Ignore Invalid Entries	Forces distribution of this collection to NOT skip over invalid entries. This can be useful to create ‘weighted’ spaces, and can be overriden on a per-node basis.

Advanced
Auto Rebuild Staging	Enabled by default. When enabled, any user-made modification to the asset collection will trigger a rebuilding of the staging data (saves you a click, in case your forget about it.)

Individual Entry

Property	Description
Settings
Static Mesh	The static mesh associated with this entry.
ISM Descriptor	Descriptor used for this static mesh when used with a `Instanced Static Mesh` component. Note that there is no need to re-set the Static Mesh, it will use the one set at the top-level of the entry itself.
SM Descriptor	Descriptor used for this static mesh when used with a regular `Static Mesh` component, such as `Spline Mesh`.
Sub Collection	If this entry is marked as a sub-collection, this let you specify which collection this entry will get its data from.

Common properties

Common properties are properties shared amonst all asset collection’ entries

Property	Description
Sub Collection
Sub Collection	If `Is Sub Collection` is enabled, lets you pick an Asset Collection that will work like a list of alternative choices for this entry.
Is Sub Collection	Whether this entry is a sub-collection or not. Enabling this option will reveal the Asset Collection picker.

Settings
Weight	The weight of this entry, relative to the others in the list. Higher weights means higher chance of being picked, if the context is using weighted random selection.
Category	A category associated with this entry. Think of it as a unique tag.
Tags	A list of unique tags that can be forwarded to components using this entry. Note that not all nodes can handle tags.

An entry Weight is not only used for Weighted Random selection, but is also used to sort entries in certain cases; among which Indexed Weight (Ascending/Descending) distribution mode of the Asset Staging node.

Variations

Optionally, you may enter a few random ranges for staging nodes to use, should you want to.
This can come in handy if you want to have high-level, per-asset variations.

Positions	Additive
Offset Min	Minimum offset range.
Offset Max	Maximum offset range.
Absolute offset	Whether the offset should be applied in world space, or “local” to the point’ transform.

Rotation	Additive
Rotation Min	Minimum rotation offset range.
Rotation Max	Maximum rotation offset range.

Scale	Multiplicative
Scale Min	Minimum scale multiplier range.
Scale Max	Maximum scale multiplier range.
Uniform Scale	Whether the random scale multiplier should be applied per-component or uniformly (in which case it uses `X` for all components).

Note that variations are never applied by default by any nodes, and are considered an advanced tweak.