Emit nParticles evenly from NURBS surfaces

You can spread the emission more evenly from NURBS surface emitters. This is often beneficial for surfaces that have sharp curves or bends.

To spread emission more evenly

1. Select the emitting NURBS surface.
2. Display the Attribute Editor.
3. Click the geoConnector tab. Expand the width of the Attribute Editor if you don’t see the tab.
4. Increase the value of the Tessellation Factor, then rewind and play the animation.

   The default value is 200. Try doubling the value as many times as necessary to get the desired evenness. Higher values increase processing time. If you add two or more surface emitters to an object, each uses the same Tessellation Factor.

   Tip: You can also tune surface emission direction with the Normal Speed and Tangent Speed attributes. See Create Emitter Options.

   If you add a surface emitter to a NURBS or polygonal surface, you can use a MEL statement or expression to learn the UV coordinates where each particle was emitted. You must add parentU and parentV attributes to the emitted particle shape, then turn on Need Parent UV in the emitter.