Function createBirdMaterial

createBirdMaterial(
    u: {
        back: UniformNode<"color", Color>;
        belly: UniformNode<"color", Color>;
        states: UniformNode<"vec4", Vector4>;
        tip: UniformNode<"color", Color>;
        wing: UniformNode<"vec2", Vector2>;
    },
): MeshStandardNodeMaterial
The bird material. Wings flap in the vertex shader: each wing vertex rotates about the body axis by sin(phase)·amplitude, more toward the tip, so the wing bends as it beats. Per-instance attributes as for fish: faunaMotion = (wing phase, flap scale, 0, 0), faunaLook = (hue, brightness, ·, ·).
Parameters
- u: {
      back: UniformNode<"color", Color>;
      belly: UniformNode<"color", Color>;
      states: UniformNode<"vec4", Vector4>;
      tip: UniformNode<"color", Color>;
      wing: UniformNode<"vec2", Vector2>;
  }
  - back: UniformNode<"color", Color>
    
    Back and upper-wing colour.
  - belly: UniformNode<"color", Color>
    
    Belly and under-wing colour.
  - states: UniformNode<"vec4", Vector4>
    
    x = wetness, y = snow, z = burn, w = damage.
  - tip: UniformNode<"color", Color>
    
    Wing-tip colour.
  - wing: UniformNode<"vec2", Vector2>
    
    x = tip length (share of the span), y = flap amplitude, radians.
Returns MeshStandardNodeMaterial
- Defined in fauna/src/birds.ts:34