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BufferSetting.js
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/* Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
* This program are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution and is available at http://www.apache.org/licenses/LICENSE-2.0.html.*/
import {SuperMap} from '../SuperMap';
import {Util} from '../commontypes/Util';
import {BufferEndType, BufferRadiusUnit} from '../REST';
import {BufferDistance} from './BufferDistance';
/**
* @class SuperMap.BufferSetting
* @category iServer SpatialAnalyst BufferAnalyst
* @classdesc 缓冲区分析通用设置类。
* @param {Object} options - 参数。
* @param {SuperMap.BufferEndType} [options.endType=SuperMap.BufferEndType.FLAT] - 缓冲区端点枚举值。
* @param {SuperMap.BufferDistance} [options.leftDistance=100] - 左侧缓冲距离。
* @param {SuperMap.BufferDistance} [options.rightDistance=100] - 右侧缓冲距离。
* @param {number} [options.semicircleLineSegment=4] - 圆头缓冲圆弧处线段的个数。
* @param {SuperMap.BufferRadiusUnit} [options.radiusUnit=SuperMap.BufferRadiusUnit.METER] - 缓冲半径单位。
*/
export class BufferSetting {
constructor(options) {
/**
* @member {SuperMap.BufferEndType} [SuperMap.BufferSetting.prototype.endType = SuperMap.BufferEndType.FLAT]
* @description 缓冲区端点枚举值。分为平头和圆头两种。
*/
this.endType = BufferEndType.FLAT;
/**
* @member {SuperMap.BufferDistance} [SuperMap.BufferSetting.prototype.leftDistance=100]
* @description 左侧缓冲距离。
* 当为 GeometryBufferAnalyst 时，单位为默认地图的投影系的单位（如3857为米，4326为度），
* 当为 DatasetBufferAnalyst 时，单位通过{@link BufferSetting.radiusUnit}设置（默认全部为米）。
*/
this.leftDistance = new BufferDistance();
/**
* @member {SuperMap.BufferDistance} [SuperMap.BufferSetting.prototype.rightDistance=100]
* @description 右侧缓冲距离。
* 当为 GeometryBufferAnalyst 时，单位为默认地图的投影系的单位（如3857为米，4326为度），
* 当为 DatasetBufferAnalyst 时，单位通过{@link BufferSetting.radiusUnit}设置（默认全部为米）。
*/
this.rightDistance = new BufferDistance();
/**
* @member {number} [SuperMap.BufferSetting.prototype.semicircleLineSegment=4]
* @description 圆头缓冲圆弧处线段的个数。即用多少个线段来模拟一个半圆。
*/
this.semicircleLineSegment = 4;
/**
* @member {SuperMap.BufferRadiusUnit} [SuperMap.BufferSetting.prototype.radiusUnit = SuperMap.BufferRadiusUnit.METER]
* @description 缓冲半径单位，可以是{@link SuperMap.BufferRadiusUnit.METER}、{@link SuperMap.BufferRadiusUnit.MILIMETER}、
* {@link SuperMap.BufferRadiusUnit.CENTIMETER}、{@link SuperMap.BufferRadiusUnit.DECIMETER}、{@link SuperMap.BufferRadiusUnit.KILOMETER}、
* {@link SuperMap.BufferRadiusUnit.FOOT}、{@link SuperMap.BufferRadiusUnit.INCH}、{@link SuperMap.BufferRadiusUnit.MILE}、{@link SuperMap.BufferRadiusUnit.YARD}。
* 仅对BufferAnalyst有效。
*/
this.radiusUnit = BufferRadiusUnit.METER;
if (options) {
Util.extend(this, options);
}
this.CLASS_NAME = "SuperMap.BufferSetting";
}
/**
* @function SuperMap.BufferSetting.prototype.destroy
* @description 释放资源，将引用资源的属性置空。
*/
destroy() {
let me = this;
me.endType = null;
if (me.leftDistance) {
me.leftDistance.destroy();
me.leftDistance = null;
}
if (me.rightDistance) {
me.rightDistance.destroy();
me.rightDistance = null;
}
me.semicircleLineSegment = null;
me.radiusUnit = null;
}
}
SuperMap.BufferSetting = BufferSetting;