import { Utils } from '../common/Utils'
import { BaseModelObject3D } from './BaseModelObject3D';

function _getParam(width, height, param) {
	if (Utils.isObject(width)) {
		return width;
	}

	if (Utils.isObject(height)) {
		return height;
	}

	return param;
}

function _buildParam(width, height, param) {
	param = _getParam(width, height, param);

	param['body'] = param['body'] || {};
	param['body']['localScale'] = param['body']['localScale'] || [
		Utils.parseFloat(width, Utils.parseFloat(param['width'], 1)),
		Utils.parseFloat(height, Utils.parseFloat(param['height'], 1)),
		1
	];

	param['body']['localAngles'] = param['body']['localAngles'] || [-90, 0, 0];
	param['instanceGroupName'] = param['instanceGroupName'] || 'Plane';

	return param;
}

/**
 * Plane - 平面几何体
 * 
 * 用于创建平面模型（片状，无厚度），支持自定义宽度和高度细分。
 * 
 * @class Plane
 * @memberof THING
 * @extends THING.BaseModelObject3D
 * @public
 * 
 * @example
 * const p = new THING.Plane(2, 2, {
 *   widthSegments: 16,
 *   heightSegments: 16,
 *   position: [3, 0.1, 3],
 * });
 */
class Plane extends BaseModelObject3D {

	static defaultTagArray = ['Geometry'];

	/**
	 * 平面
	 * @param {number} [width=1.0] 宽度，单位为米
	 * @param {number} [height=1.0] 高度，单位为米
	 * @param {object} [param] 初始参数
	 * @param {number} [param.widthSegments=1] 宽度方向细分数
	 * @param {number} [param.heightSegments=1] 高度方向细分数
	 * @constructor
	 * @public
	 */
	constructor(width, height, param = {}) {
		super(_buildParam(width, height, param));
	}

	// #region Overrides

	// #endregion

	// #region Accessor

	/**
	 * 设置/获取 平面宽度(x方向 单位:米)
	 * @default 1.0
	 * @type {number}
	 * @public
	 */
	get width() {
		return this.body.scale[0];
	}
	set width(value) {
		this._processBodyWithoutPivot((body) => {
			let scale = body.scale;
			body.scale = [value, scale[1], scale[2]];
		});
	}

	/**
	 * 设置/获取 平面高度(y方向 单位:米)
	 * @default 1.0
	 * @type {number}
	 * @public
	 */
	get height() {
		return this.body.scale[1];
	}
	set height(value) {
		this._processBodyWithoutPivot((body) => {
			let scale = body.scale;
			body.scale = [scale[0], value, scale[2]];
		});
	}

	// #endregion

	/**
	 * Check whether it's plane object.
	 * @type {boolean}
	 */
	get isPlane() {
		return true;
	}

}

export { Plane }