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Vertex group

Image 2: Controlling the emission of particles with a vertex group.

With vertex groups you can control e.g. the emission of particles, the Weight of the vertices controls the emission time respectively the strength of the influence. It may be necessary to change the particle system type (Hair→Emitter→Hair) to propagate changes in vertex groups.

  • Attribute: The attribute of the particles that is effected by the vertex group.
    • Density: The density of the particles. The number of particles is constant, more particles are emitted from a smaller area.
    • Velocity: A factor for the speed of the particles.
    • Length: The path length of Children particles.
    • Size: Size of the particles.
    • TanVel: A factor for the Tan velocity during emission.
    • TanRot: Changes the rotation of the Tan vector.
    • Effector: Hair particle systems can react directly to force fields, you can limit this influence with a vertex group.
    • The other parameters are equivalent to the Children parameter settings.
  • Neg: Negates the effect of the vertex group.
  • Vertex group: Select the vertex group that is used.


Retrieved from "http://wiki.blender.org/index.php/Doc:2.4/Manual/Physics/Particles/Vertexgroups"
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