Model

Models are three-dimensional shapes used in Minecraft which are used to display objects encountered in the game.

In, the models pertaining to the vast majority of blocks and items can be configured, as well as those of a small selection of entities.

Uses of models
Non-hardcoded models are used in-game in the following contexts:

Objects which cannot be remodelled
While most blocks and items can have their model changed, there are a multitude of things that cannot.

For example, no entities (with the exception of item frames and glow item frames) can have their model changed $$ with resource packs alone.

Blocks and fluids
Even these blocks (with the exception of the three air variants) have particle textures defined in dedicated model files, however it still stands that actual visual models cannot be changed.

Sub-elements of blocks, such as passively emitted particles and the book on top of the enchanting table, cannot be modified, even though the base block can.

History
Modelldaten Modelo Modèles モデル Modele bloków 模型