I have 2 spheres. The inner sphere (which is smaller) lies in the center of the outer sphere. The outer sphere has a transparancy value, the inner not.
Both objects shall cast shadow. The result should be a shadow-circle, where the outer regions are somehow gray caused by the transparency of the outer sphere and the inner regions black due to the inner not-transparent sphere.
I tried a lot. But I didn’t get it.
What I want to simulate with this is a “half-shadow”. A halfshadow is caused by a 2-dimensional lightsource. It’s the areas of the shadow where the shadow-casting object only partly obscures the light source.
Thanx for help,