Affinity
Generate dynamic attraction rules between scatter-layers
If you'd like your scatter-system to be dynamically attracted by other scatter-system(s), that's where the "Affinity" feature comes inhandy. Choose your system affinity, a max range & transition distance, then define the influence on scale or density of your wish to create the distribution rule.
A limit collision slider is available to limit spawn distance near your affinity object.
By default, the proximity contact will be your scattered points origin. If you'd like a more precise collision distance field, it is possible to change the collision surface to 'Convex-hull' or use the realized instances meshes, however, this is not recommended as it might be too performance intensive.
Repulsion
Avoid collision in-between scatter-layers
If you'd like your scatter-system to be dynamically repulsed by other scatter-system(s), that's where the "Repulsion" feature comes in handy. Choose your repulsive system(s), a max range & transition distance, then define the influence on the scale or density you wish to create such distribution rules.
A limit collision slider is available to limit spawn distance near your affinity object.
Just like the affinity feature, by default the proximity contact will be your scattered points origin. If you'd like a more precise collision distance field, it is possible to change the collision surface to 'Convex-hull' or use the realized instances meshes, however, this is not recommended as it might be too performance intensive.
Ecosystem Dependencies
Note that if a dependent system chosen by one of our ecosystem features is hidden, it is impossible for us to evaluate the distance field properly (the data is hidden & therefore not available by our engine).
Hiding a system in the viewport could trigger a domino effect on the relying system.
Ecosystem & Biomes
Like most features, all ecosystem settings can be exported within a .biome format. Make sure that there are no dependencies issues, by selecting every layers and their dependencies when doing the biome export! (approximatively 20% of the 80 biomes from the default library are using these features).