Facing Particles - To Viewport?

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  02 February 2008
Facing Particles - To Viewport?

Hey there!

I've been looking at this on and off and coming up empty handed...

Is there a way to have a Particle Flow shape just face the active viewport/active camera for rendering? Regular particle systems facing shape works this way.

I see how to set it up to face a specific camera or object, but not a viewport.

Hopefully I'm missing something obvious!

Thanks!
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  02 February 2008
Not unless your viewport is an active camera.
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  02 February 2008
Use a shape facing operator, face an object and copy the viewports transform matrix to that object. Haven't tried that out, just an idea.
 
  02 February 2008
Quote: Not unless your viewport is an active camera.

If you mean that you can face the viewport as long as it's any active camera, that would be perfect. If you mean that it will just face the camera/object from the node I see that it doesn't get me far.

Quote: Use a shape facing operator, face an object and copy the viewports transform matrix to that object. Haven't tried that out, just an idea.

It's a little over my head, but I think I know what you mean... I'll give it a go and see if it helps. That's the second time or so you've pointed me into a direction that pushed me.

Thanks guys! Any other suggestions or workarounds other people use?

I need this to work in a way where it will fit into a library that I keep of live effects my company does, and it needs to be setup to turn around quickly (merge it in, tweak a little and render). Changing this modifier for every effect in a scence and for every camera angle would kill too much production time.

Although I could probably just use an instanced shape modifier to make it a little easier.
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  02 February 2008
Search the MaxScript documentation for viewportTM. It's actually not that hard to transfer, just add an transform script controller to your dummy object and enter the viewport transformation matrix

viewport.getTM()

into the expression field.
The harder part would be the constant update.
Maybe there is even a way to transfer the viewport matrix directly.
 
  02 February 2008
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