AssetPostprocessor.OnAssignMaterialModel 在模型指定的材质

# [AssetPostprocessor](AssetPostprocessor.html).OnAssignMaterialModel 在模型指定的材质

function *OnAssignMaterialModel* (*material* : [Material](../Material/Material.html), *renderer* : [Renderer](../Renderer/Renderer.html)) : [Material](../Material/Material.html)

*Description* 描述

Feeds a source material

获取一个源材质。

The returned material will be assigned to the renderer. If you return null,
Unity will use its default material finding / generation method to assign a
material. The sourceMaterial is generated directly from the model before
importing and will be destroyed immediately after OnAssignMaterial.

返回的材质将被赋于渲染器，如果返回 null，Unity 将使用缺省材质查找/生成方法来分配材质。sourceMaterial 在模型导入并在销毁前，OnAssignMaterial 之后直接从模型生成。

```
class MyMeshPostprocessor extends AssetPostprocessor {

function OnAssignMaterialModel (material : Material , renderer : Renderer ) : Material 
	{
		var materialPath = "Assets/" + material.name + ".mat";

// Find if there is a material at the material path
		// Turn this off to always regeneration materials
		// 根据路径查找是否有材质,关闭后自动生成材质
		if ( AssetDatabase.LoadAssetAtPath (materialPath, typeof( Material )))
			return AssetDatabase.LoadAssetAtPath (materialPath, typeof( Material ));

// Create a new material asset using the specular shader
		// but otherwise the default values from the model
		// 用特定着色器创建新材质资源,否则使用默认值
		material.shader = Shader.Find ("Specular");
		AssetDatabase.CreateAsset (material, "Assets/" + material.name + ".mat");
		return material;
	}
}
```