katniss's profile - activity

Is there a way of modifying the appearance of the "floor" of the field in certain regions without adding obstacles? I'm making a simulation where bee-like robots congregate under areas of high temperature, and I want to show these regions of high temperature by coloring the floor of the field in those regions differently than the rest (so there will be big red circles in some spots and the rest will be the normal checkerboard pattern). Is this an option, or do I have to configure my own visualization window or something?

I've just loaded groovy onto my new machine and am trying to run some old code (using rosbuild, but that's beside the point) and have noticed some visualization issues with stage that hadn't cropped up before. For some reason the stage window is malformed, there are random pixels occluding it when its open, and they change depending on how much they zoom (I can't upload a photo yet since my karma isn't high enough). Has anyone else run into this, or have an idea about why its happening?