Hi Everyone,

        I submitted a small patch to allow for the toggling on and off of the 
particle system.  On my mac my i7 would kick down and the fan would turn on 
when working with particles of almost any size.  The patch doesn’t make the 
particles go away so when working on the mesh there still will be cpu load if 
it is a high particle system but while doing primitive operations like 
translate, rotate and scale it improves performance dramatically.  

        It also allows for a scene with quite a bit of hair to get the figure 
of the mesh without having the view area cluttered up.  I was also thinking of 
setting up a global override of the particle percentage display.  That would be 
a possible enhancement to this work.

        The setting is found in the properties pane and under display.  Right 
under the Render Only toggle.

Below is the description on the patch.

This is just a simple patch that allows someone to toggle off the rendering of 
the particle systems.  If one is rendering a large number of particles it can 
take significant resource to view it.  This is especially helpful for a scene 
with lots of hair meshes that can be toggled off with the flick of a button.  
It is also helpful just to double check the form of a mesh without having to 
reconfigure the display percentage.  If you have a number of objects this is 
especially helpful.  



Thanks,
Scott.
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