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BufferSetting.js
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82 lines (72 loc) · 3.36 KB
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import SuperMap from '../SuperMap';
import {BufferEndType, Unit} from '../REST';
import BufferDistance from './BufferDistance';
/**
* @class SuperMap.BufferSetting
* @classdesc 缓冲区分析通用设置类。
* @param options - {Object} 缓冲区分析设置可选参数。如：<br>
* endType - {SuperMap.BufferEndType} 缓冲区端点枚举值。<br>
* leftDistance - {{@link SuperMap.BufferDistance}} 左侧缓冲距离。<br>
* rightDistance - {{@link SuperMap.BufferDistance}} 右侧缓冲距离。<br>
* semicircleLineSegment - {number} 圆头缓冲圆弧处线段的个数。<br>
* radiusUnit - {{@link SuperMap.Unit}} 缓冲半径单位。
*/
export default class BufferSetting {
/**
* @member SuperMap.BufferSetting.prototype.endType - {SuperMap.BufferEndType}
* @description 缓冲区端点枚举值。分为平头和圆头两种，默认为平头，即 SuperMap.BufferEndType.FLAT
*/
endType = BufferEndType.FLAT;
/**
* @member SuperMap.BufferSetting.prototype.leftDistance - {SuperMap.BufferDistance}
* @description 左侧缓冲距离。
* 默认为100。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BufferSetting.radiusUnit设置（默认全部为米）。
*/
leftDistance = null;
/**
* @member SuperMap.BufferSetting.prototype.rightDistance -{SuperMap.BufferDistance}
* @description 右侧缓冲距离。
* 默认为100。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BufferSetting.radiusUnit设置（默认全部为米）。
*/
rightDistance = null;
/**
* @member SuperMap.BufferSetting.prototype.semicircleLineSegment -{number}
* @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，默认值为4。
*/
semicircleLineSegment = 4;
/**
* @member SuperMap.BufferSetting.prototype.radiusUnit - {SuperMap.Unit}
* @description 缓冲半径单位，默认值为SuperMap.Unit.METER，还可以是SuperMap.Unit.MILIMETER、SuperMap.Unit.CENTIMETER、SuperMap.Unit.DECIMETER、SuperMap.Unit.KILOMETER、SuperMap.Unit.FOOT、SuperMap.Unit.INCH、SuperMap.Unit.MILE、SuperMap.Unit.YARD。仅对DatasetBufferAnalyst有效
*/
radiusUnit = Unit.METER;
constructor(options) {
let me = this;
me.leftDistance = new BufferDistance();
me.rightDistance = new BufferDistance();
if (options) {
SuperMap.Util.extend(this, options);
}
}
/**
* @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;
}
CLASS_NAME = "SuperMap.BufferSetting";
}
SuperMap.BufferSetting = BufferSetting;