Group 3d Mask

3D Mask  -  Mask according to object id or particles group

This mask can be used with a 3D File with multiple objects in it, grouped in one mesh or with a Particles ’s group.

Their function is to apply a 3D Modifier or a Field only on a specific object or a particle Group. Groups of particles can be defined through Particle Rule .

On the example below, you see the white particles emitted in the Group [1]. These particles have an “Increase Group” action (“Set Group” action in menu) that changes their Group to [2].

The Gravity field has a Group Selector Mask set as Single Selection on Group [2], which means that the gravity field will only have an effect on the second Group.

3 mode of selection are available:

• Single selection: only the group set in the start parameter will be affected.

• Range Selection Block: all the group between Start and End will be fully affected.

• Range Selection Progressive: the lower group will be fully masked while the higher group will be fully affected, with a gradual progression in between.

    Oil.createObject("GroupSelectorGeometryMask")