BRL-CAD is a 3D modeling system with a variety of ways to visualize geometry including default wireframes, hidden-line drawing, translucent shaded, and opaque shaded.  We need good application icons to indicate most of those methods.

Define a set of icons that we can use in our main GUI application (e.g., on a top toolbar). Submit the icons in a raw editable format (e.g., SVG, AI, PSD, or XCF) as well as an overview of them all in PNG format.

The icons should be scalable at least from 16x16 through 128x128 while maintaining a clean appearance.

Search the web for examples of what those different visualization modes look like.