DyEmitters - Emission Mask

This feature works similar to subtractive Boolean operations: it is possible to use objects to cut away parts of a fluid volume.

From collision objects

This option works automatically and detects all (active and inactive) objects which are connected to the Dyverso domain and intersect the particles volume:

• Particles inside these objects will be removed.
• The "Fill" emitter is a special case, because the fill object will not be considered.
• If you want to exclude specific objects you can choose them manually with "From objects" and disable "From collision objects".
• To exclude inactive objects from masking just unlink them in the "Relationship Editor".

From objects

If you do not want to use the automatic "From collision objects" mode you can choose one or more (active and inactive) polygon objects manually:

• Particles inside these objects will be removed.
• An object's "Volume mode" influences the result, but in most cases you will choose the "Solid inside" mode.
• Masking works best with true particle volumes, e.g. the "Fill" emitter or an emitter's "Volume" parameter.
• It is possible to use masking with particle streams, but the results might not fulfill your expectations.
• To exclude inactive objects from masking just unlink them in the "Relationship Editor".

Mask surface offset

With this value it is possible to inflate or shrink the object(s) virtually to remove more or less particles.