That said, I started Blender and started fiddling with the values. Soon enough, I had something like this on my screen:
And after rendering it:
It's still on it's way, but close enough for a couple of hours. Sure, they're not dirty, but they have some appeal and give the illusion of being coin-like.
I made the coin as a very small object, so just copying the values might not work. But here's a memo of what I thought:
- The object itself was easy to do. I created a cylinder with enough vertices, the clicked on mirror-modifier, extruded the main-surface, the scaled it down slightly, extruded again and the just pushed those extruded polygons down. Thus making a surface resembling the outer rim of a coin.
- The platform (a plane) for the object is slightly reflective, white and emitting slightly.
- Turn on ambient occlusion. It makes everything look real. Lights are raytraced, noise is applied to shadows, etc.
- When fixing the material, "copper-like", give it a bump-map (I used a variation of Voronoi). Don't forget to use ray-mirroring, but remember to "dampen" the mirror-effect with fresnel.































































