PM - Field
While the mesh-related adjustments are directly accessible from the mesh-node, it is different with the particle-related parameters. They can only be seen with an emitter attached to the mesh node. These parameters can be adjusted individually for each emitter, making it possible to define specific settings and values for the emitters to generate a much better and diversified mesh. To get your hands on these parameters, select the desired emitter that is grouped under the appropriate mesh node.
Radius
The "Particle Mesh" engine draws spheres around each particle by default. These spheres can be blended using the “Smooth” parameter. The individual spheres can be seen when “Smooth” is not used. The radius of these spheres, given in metres [m], is adjusted here. Of course, “Radius” is also responsible for metaballs – if the metaballs do not influence each other, you can see the spheres with the adjusted "Radius".
Subtractive field
Normally meshes from two or more emitters are used to build a single mesh. In fact they are added, but you also have the possibility to subtract meshes. This can be compared with a Boolean operation in your 3D application, where objects can either be added or subtracted to generate new structures.