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import { Command } from '../Command.js';
import { ObjectLoader } from 'three';
/**
* @param editor Editor
* @param object THREE.Object3D
* @param mapName string
* @param newMap THREE.Texture
* @constructor
*/
class SetMaterialMapCommand extends Command {
constructor( editor, object, mapName, newMap, materialSlot ) {
super( editor );
this.type = 'SetMaterialMapCommand';
this.name = `Set Material.${mapName}`;
this.object = object;
this.material = this.editor.getObjectMaterial( object, materialSlot );
this.oldMap = ( object !== undefined ) ? this.material[ mapName ] : undefined;
this.newMap = newMap;
this.mapName = mapName;
}
execute() {
if ( this.oldMap !== null && this.oldMap !== undefined ) this.oldMap.dispose();
this.material[ this.mapName ] = this.newMap;
this.material.needsUpdate = true;
this.editor.signals.materialChanged.dispatch( this.material );
}
undo() {
this.material[ this.mapName ] = this.oldMap;
this.material.needsUpdate = true;
this.editor.signals.materialChanged.dispatch( this.material );
}
toJSON() {
const output = super.toJSON( this );
output.objectUuid = this.object.uuid;
output.mapName = this.mapName;
output.newMap = serializeMap( this.newMap );
output.oldMap = serializeMap( this.oldMap );
return output;
// serializes a map (THREE.Texture)
function serializeMap( map ) {
if ( map === null || map === undefined ) return null;
const meta = {
geometries: {},
materials: {},
textures: {},
images: {}
};
const json = map.toJSON( meta );
const images = extractFromCache( meta.images );
if ( images.length > 0 ) json.images = images;
json.sourceFile = map.sourceFile;
return json;
}
// Note: The function 'extractFromCache' is copied from Object3D.toJSON()
// extract data from the cache hash
// remove metadata on each item
// and return as array
function extractFromCache( cache ) {
const values = [];
for ( const key in cache ) {
const data = cache[ key ];
delete data.metadata;
values.push( data );
}
return values;
}
}
fromJSON( json ) {
super.fromJSON( json );
this.object = this.editor.objectByUuid( json.objectUuid );
this.mapName = json.mapName;
this.oldMap = parseTexture( json.oldMap );
this.newMap = parseTexture( json.newMap );
function parseTexture( json ) {
let map = null;
if ( json !== null ) {
const loader = new ObjectLoader();
const images = loader.parseImages( json.images );
const textures = loader.parseTextures( [ json ], images );
map = textures[ json.uuid ];
map.sourceFile = json.sourceFile;
}
return map;
}
}
}
export { SetMaterialMapCommand };