When in Dome…

The Morehead Planetarium & Science Center Production Blog

LowPoly Model for High poly crowd

by Peter Althoff

December 7, 2009 | 2 comments | Production, When in Dome

We’re working on an experimental short that is designed to help us break the daily grind of working strictly on planetarium shows. The short is intended to be entered at DomeFest. An interesting challenge has arisen as we try to generate a crowd that should ultimately cover the dome surface.

My number one priority was to make sure the object that was to be duplicated thousands of times was as lowpoly as I could get it. LowPoly, reffering to an amout of the shapes known as polygons that define the shape of a computer generated model.

The resulting insect is based upon the anatomy of a pill beetle.

bugRendered

This doesn’t look like much up close, but its intent it to be very small. I was able to make this bug for less than 1000, polys.

bugWireframe

But when you’ve got 5000 on the screen at one time, then you’re talking about close to 5 million polygons, all being animated. The bugs legs and antenna had to move. We couldn’t just have them sliding around being pushed or dragged by some imaginary force. All of that information can cause some instability in the scene, so to make life even easier I worked with smaller crowds and plan to layer them up to appear as one large crowd in the final composite.

This  one bug was duplicated multiple times and simulated in a crowd simulation.


The Following animation is a short test showing a crowd of 500 bugs approaching a dome structure.



Comments

There are 2 comments for this post.

  1. Denise on December 17, 2009 6:38 pm

    Really look forward to seeing this on the dome…I think!

  2. When in Dome… :: When in Dome :: Jeepers Creepers at Fulldome UK 2011 on January 26, 2011 11:45 am

    [...] that if you’re not yet afraid of insects, you might be after it’s over. Pete wrote a short blog post about it when we were in the development phase to give you a little sense of the [...]

Write a Comment