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Particle Preview | prv_particles, prv_prt_name – Enables the preview of particles. The controls below affect the visualization of the currently selected particle group.

Particle Size | viewPartSize – Sets the size of the particles in the viewport. Note that all particles are drawn with the same size.

Show | show_prt_face – When enabled, the particle system will be visible in the Simulator's preview.

Preview Color | prv_prt_color_face – Specifies the default color of the particles. Moving particles are displayed as a blend between their default color and white, based on the selected Scale Color By channel. Note that if the particle system has an RGB channel exported, it will be used in place of the Preview Color.

Scale Color By | prv_prt_colscale_chan_face – Specifies the particle channel used for adjusting the particle preview color.

• No Scaling – All particles will be the same color - the one specified by Preview Color
  
• Speed – The faster the particles move, the whiter they will appear.  The preview is only affected by the Scale Max option if the particle system has the Velocity channel export enabled.
• Size – The larger the particles are, the whiter they will appear.  The preview is only affected by the Scale Max option if the particle system has the Size channel export enabled.
• Age – The older the particles are, the whiter they will appear.  The preview is only affected by the Scale Max option if the particle system has the Age channel export enabled.
• Viscosity – The higher the viscosity the particles, the whiter they will appear.  The preview is only affected by the Scale Max option if the particle system has the Viscosity channel export enabled.

Scale Max | prv_prt_wspeed_face – When Auto is disabled, allows you to specify a constant value at which the particle preview color becomes pure white. Particles with a Scale Color By channel value higher than the specified Scale Max are also pure white. You can also find more info about the usual particle channel maximum values on the Particle Channel Ranges page.

Auto | prv_prt_awspeed_face – When enabled, automatically calculates Scale Max based on the Min/Max range of the selected Scale Color By particle channel, assuming the respective channel export has been enabled in the Output rollout for the selected particle system.

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