import { MaterialLoader } from '../../loaders/MaterialLoader.js';
/**
* A special type of material loader for loading node materials.
*
* @augments MaterialLoader
*/
class NodeMaterialLoader extends MaterialLoader {
/**
* Constructs a new node material loader.
*
* @param {LoadingManager?} manager - A reference to a loading manager.
*/
constructor( manager ) {
super( manager );
/**
* Represents a dictionary of node types.
*
* @type {Object<String,Node.constructor>}
*/
this.nodes = {};
/**
* Represents a dictionary of node material types.
*
* @type {Object<String,NodeMaterial.constructor>}
*/
this.nodeMaterials = {};
}
/**
* Parses the node material from the given JSON.
*
* @param {Object} json - The JSON definition
* @return {NodeMaterial}. The parsed material.
*/
parse( json ) {
const material = super.parse( json );
const nodes = this.nodes;
const inputNodes = json.inputNodes;
for ( const property in inputNodes ) {
const uuid = inputNodes[ property ];
material[ property ] = nodes[ uuid ];
}
return material;
}
/**
* Defines the dictionary of node types.
*
* @param {Object<String,Node.constructor>} value - The node library defined as `<classname,class>`.
* @return {NodeLoader} A reference to this loader.
*/
setNodes( value ) {
this.nodes = value;
return this;
}
/**
* Defines the dictionary of node material types.
*
* @param {Object<String,NodeMaterial.constructor>} value - The node material library defined as `<classname,class>`.
* @return {NodeLoader} A reference to this loader.
*/
setNodeMaterials( value ) {
this.nodeMaterials = value;
return this;
}
/**
* Creates a node material from the given type.
*
* @param {String} type - The node material type.
* @return {Node} The created node material instance.
*/
createMaterialFromType( type ) {
const materialClass = this.nodeMaterials[ type ];
if ( materialClass !== undefined ) {
return new materialClass();
}
return super.createMaterialFromType( type );
}
}
export default NodeMaterialLoader;