Hi I am trying to animate the path of a needle guide (green line) as it covers the blue region of the prostate, first top half then bottom half.
I also tried using a texture object mask, with a plane, but it's too straight, the coverage should be arc like. Using a bend modifier did not help.
I wanted to animate the path covering the top half and the the bottom half. I can do this with a bitmap, but it's very difficult to do and make it look accurate.
The material also has emission, so I want the blue area to emit blue and the green area to emit green. Any suggestions would be greatly appreciated.
Fig 1. Using Plane with Object Texture Map
Fig 2. Division is straight rather than curved like actual path
I would like the green area to just cover the upper half
Fig 3. Plane with Bend modifier shows actual path, division should be curved like this