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The result of using a particle system within a 3D scene
Particle System Distribution
To adjust the distribution of particles being emitted, select the pEmitter node to expose its controls in the Inspector, then open the Velocity controls in the Controls tab, and use the Angle, Angle Variance, Angle Z, and Angle Z Variance controls to adjust the direction and width over which particles are emitted. All these controls can be animated.
A pEmitter node’s Velocity Angle and Angle Variance controls let you adjust the direction and width of particle distribution
Particle systems can be positioned and rotated by loading the pEmitter nodes that generate particles into a viewer and using the onscreen 3D position and Rotation controls provided to move the particle system around.
A pEmitter node loaded into the viewer with the rotation onscreen controls enabled
Alternatively, you can use the controls of the pEmitter’s Region tab in the Inspector to adjust Translation, Rotation, and Pivot. All these controls can be animated.
A pEmitter node’s Region controls open in the Inspector