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# bake

### AutoAuthoring

* BufferSpawnerAuthoring
* ManagedSpawnerAuthoring
* AutoAuthoring
* BakingTypeAutoAuthoring
  * [BakingTypeAutoAuthoring.cs](https://github.com/Unity-Technologies/EntityComponentSystemSamples/blob/15105e7917e83b56f0bc863701023d6f028641e9/EntitiesSamples/Assets/Baking/AutoAuthoring/BakingTypeAutoAuthoring/BakingTypeAutoAuthoring.cs#L23)

### Dependencies

```
// cause this baker to rerun:
DependsOn(authoring.Image);
```

### BakingTypes

```
var pos = GetComponent<Transform>().position;
var parentBox = GetComponentInParent<CompoundBBAuthoring>();
```

### Blob

* 内存中存储数组, 是个 ECS 共享只读资源库
* 可以看作是可以写在 ComponentData 里的只读数组
* [BlobAssetBaker](https://github.com/Unity-Technologies/EntityComponentSystemSamples/tree/15105e7917e83b56f0bc863701023d6f028641e9/EntitiesSamples/Assets/Baking/BlobAssetBaker)
* [BlobAssetBakingSystem](https://github.com/Unity-Technologies/EntityComponentSystemSamples/tree/15105e7917e83b56f0bc863701023d6f028641e9/EntitiesSamples/Assets/Baking/BlobAssetBakingSystem)

通常使用为 Component -> Baking -> BlobReference -> ComponentData, 在常用的 Baking 流程中添加 Bulid BlobReference

* [Splines](https://github.com/Unity-Technologies/EntityComponentSystemSamples/tree/15105e7917e83b56f0bc863701023d6f028641e9/EntitiesSamples/Assets/Graphical/Splines)
* [WireframeBlob](https://github.com/Unity-Technologies/EntityComponentSystemSamples/tree/15105e7917e83b56f0bc863701023d6f028641e9/EntitiesSamples/Assets/Graphical/WireframeBlob)

#### 其他 API

```
var entities = CollectionHelper.CreateNativeArray<Entity>(config.Size * config.Size,  state.WorldUnmanaged.UpdateAllocator.ToAllocator);
```

```
TransformHelpers.ComputeWorldTransformMatrix(entity, out var matrix, ref localTransformLookup,  
    ref parentLookup, ref postTransformMatrixLookup);

```