The Rain Bump procedural texture produces a rain drop-like pattern that can be easily animated (figure 2).

Figure 1: Rain bump Node


Figure 2: The Rain Bump texture applied to a Diffuse material on a plane primitive

Parameters

    • Time - Provides control over animating the texture effect using LUA scripts.
    • Ring Count - Determines how many rings each rain drop will produce.
    • Ring Size - Specifies the size of each rain drop.
    • Density - Controls how many rain drop will be generated.
    • Strength - Acts as an opacity parameter for the visibility of of the rain drops, higher values produce brighter effects which will produce a stronger bump effect.
    • Random Seed - Changes the pattern of the rain drops.
    • Sharpness - Blurs or sharpens the effect of each rain drop ring.
    • UVW Transform - Positions, scales, and rotates the surface texture.
    • Projection - Sets how the texture projects onto the surface.