import Command from './Command';

/**
 * 设置缩放命令
 * @author dforrer / https://github.com/dforrer
 * Developed as part of a project at University of Applied Sciences and Arts Northwestern Switzerland (www.fhnw.ch)
 * @param object THREE.Object3D
 * @param newScale THREE.Vector3
 * @param optionalOldScale THREE.Vector3
 * @constructor
 */
function SetScaleCommand(object, newScale, optionalOldScale) {
	Command.call(this);

	this.type = 'SetScaleCommand';
	this.name = '设置缩放';
	this.updatable = true;

	this.object = object;

	if (object !== undefined && newScale !== undefined) {
		this.oldScale = object.scale.clone();
		this.newScale = newScale.clone();
	}

	if (optionalOldScale !== undefined) {
		this.oldScale = optionalOldScale.clone();
	}
};

SetScaleCommand.prototype = Object.create(Command.prototype);

Object.assign(SetScaleCommand.prototype, {
	constructor: SetScaleCommand,

	execute: function () {
		this.object.scale.copy(this.newScale);
		this.object.updateMatrixWorld(true);
		this.editor.app.call('objectChanged', this, this.object);
	},

	undo: function () {
		this.object.scale.copy(this.oldScale);
		this.object.updateMatrixWorld(true);
		this.editor.app.call('objectChanged', this, this.object);
	},

	update: function (command) {
		this.newScale.copy(command.newScale);
	},

	toJSON: function () {
		var output = Command.prototype.toJSON.call(this);

		output.objectUuid = this.object.uuid;
		output.oldScale = this.oldScale.toArray();
		output.newScale = this.newScale.toArray();

		return output;
	},

	fromJSON: function (json) {
		Command.prototype.fromJSON.call(this, json);

		this.object = this.editor.objectByUuid(json.objectUuid);
		this.oldScale = new THREE.Vector3().fromArray(json.oldScale);
		this.newScale = new THREE.Vector3().fromArray(json.newScale);
	}
});

export default SetScaleCommand;