Shows how to control material nodes at run-time.
Press 1, 2, 3 to change parameters.

- Enable `Parameter` property in `Logic Node Editor - Properties - Leenkx Material Node`
- RGB, Value and Image Texture nodes are supported
- See `MyTrait` script to set material parameters using Haxe
- See `NodeTree` to set material parameters using logic nodes

https://github.com/leenkx3d/leenkx/wiki/materials#material-parameters