Proximal ShaderBasic Shader
Proximal is a shader that is based on distance dependencies. The shader outputs a luminance value based on how far away the surface being shaded is from a specified object (you can choose whether the object origin, points, edges or polygon center should be used). Proximal works best in the Luminance channel.
Proximal also works with particles (with Cinema 4D particles and with Thinking Particles). A luminance effect will be generated each time a particle hits the surface (see the example above).