change colour of traffic based on congestion?

[neilcooper33]

Hi

i'm looking at a way to change the colour of vehicles based on their distance to each other. Ie. where the cars are close they'll be red, and further away they'll be green with gradient in between.

I've been looking at the vraydistancetex but there are thousands of cars and this seems to struggle with lots of geometry and would take a long time to setup as would need to add all other objects but not the current object.

We've had a quick look at the vraydirt map as well but the top of the vehicles will always be green.

Does anyone have any ideas on a way forward with this?

someone also mentioned data channels but i haven't managed to find a good tutorial on this which is relevant for this setup....

thanks in advance all

Neil

[Neilg]

I would think a particle based solution would work well - you should be able to get particles to change color based on their proximity to each other and then feed that into a material.
exactly what tools in particle flow you'd need I don't know (box, tp etc) - but it is possible.