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ThemeVector.js
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668 lines (541 loc) · 21.9 KB
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/* Copyright© 2000 - 2025 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 {Geometry} from '../commontypes/Geometry';
import {Util as CommonUtil} from '../commontypes/Util';
import {Theme} from './feature/Theme';
import {Rectangle} from '../commontypes/geometry/Rectangle';
import {Point} from '../commontypes/geometry/Point';
import {Collection} from '../commontypes/geometry/Collection';
import {MultiPoint} from '../commontypes/geometry/MultiPoint';
import {LineString} from '../commontypes/geometry/LineString';
import {MultiLineString} from '../commontypes/geometry/MultiLineString';
import {LinearRing} from '../commontypes/geometry/LinearRing';
import {Polygon} from '../commontypes/geometry/Polygon';
import {MultiPolygon} from '../commontypes/geometry/MultiPolygon';
import {Curve} from '../commontypes/geometry/Curve';
import {GeoText} from '../commontypes/geometry/GeoText';
import {SmicPoint} from './levelRenderer/SmicPoint';
import {SmicBrokenLine} from './levelRenderer/SmicBrokenLine';
import {SmicText} from './levelRenderer/SmicText';
import {SmicRectangle} from './levelRenderer/SmicRectangle';
import {SmicPolygon} from './levelRenderer/SmicPolygon';
import {LonLat} from '../commontypes/LonLat';
/**
* @class FeatureThemeVector
* @aliasclass Feature.Theme.ThemeVector
* @deprecatedclass SuperMap.Feature.Theme.ThemeVector
* @classdesc 矢量专题要素类。
* @category Visualization Theme
* @extends FeatureTheme
* @param {FeatureVector} data - 用户数据，的类型为矢量数据 feature。
* @param {SuperMap.Layer} layer - 此专题要素所在图层。
* @param {Object} style - 样式。
* @param {Object} options - 创建专题要素时的可选参数。
* @param {number} [options.nodesClipPixel=2] - 节点抽稀像素距离，单位：像素。
* @param {boolean} [options.isHoverAble=true] - 图形是否可 hover。
* @param {boolean} [options.isMultiHover=true] - 是否使用多图形高亮，isHoverAble 为 true 时生效。
* @param {boolean} [options.isClickAble=true] - 图形是否可点击。
* @param {Object} [options.highlightStyle] - 高亮样式。
* @usage
*/
export class ThemeVector extends Theme {
constructor(data, layer, style, options, shapeOptions) {
super(data, layer);
//数据的 geometry 属性必须存在且类型是 Geometry 或其子类的类型
if (!data.geometry) {
return;
}
if (!(data.geometry instanceof Geometry)) {
return;
}
/**
* @member {Bounds} [FeatureThemeVector.prototype.dataBounds]
* @description 用户数据的（feature.geometry）地理范围。
*/
this.dataBounds = data.geometry.getBounds();
/**
* @member {number} [FeatureThemeVector.prototype.nodesClipPixel=2]
* @description 节点抽稀像素距离。
*/
this.nodesClipPixel = 2;
/**
* @member {boolean} [FeatureThemeVector.prototype.isHoverAble=true]
* @description 图形是否可 hover。
*/
this.isHoverAble = true;
/**
* @member {boolean} [FeatureThemeVector.prototype.isMultiHover=true]
* @description 是否使用多图形高亮，isHoverAble 为 true 时生效。
*/
this.isMultiHover = true;
/**
* @member {boolean} [FeatureThemeVector.prototype.isClickAble=true]
* @description 图形是否可点击。
*/
this.isClickAble = true;
/**
* @member {Object} [FeatureThemeVector.prototype.highlightStyle]
* @description 高亮样式。
*/
this.highlightStyle = null;
/**
* @member {Object} [FeatureThemeVector.prototype.shapeOptions]
* @description 添加到渲染器前修改 shape 的一些属性，非特殊情况通常不允许这么做。
*/
this.shapeOptions = {};
/**
* @member {Object} [FeatureThemeVector.prototype.style]
* @description 可视化图形的 style。在子类中规定其对象结构和默认属性值。
*/
this.style = style || {};
this.CLASS_NAME = "SuperMap.Feature.Theme.Vector";
this.style = style ? style : {};
if (options) {
CommonUtil.copyAttributesWithClip(this, options, ["shapeOptions", "dataBounds"])
}
if (shapeOptions) {
CommonUtil.copyAttributesWithClip(this.shapeOptions, shapeOptions);
}
//设置基础参数 dataBounds、lonlat、location
var geometry = data.geometry;
this.lonlat = this.dataBounds.getCenterLonLat();
this.location = this.getLocalXY(this.lonlat);
//将地理要素转为专题要素
if (geometry instanceof LinearRing) {
this.lineToTF(geometry);
} else if (geometry instanceof LineString) {
this.lineToTF(geometry);
} else if (geometry instanceof Curve) {
//独立几何体
} else if (geometry instanceof MultiPoint) {
this.multiPointToTF(geometry);
} else if (geometry instanceof MultiLineString) {
this.multiLineStringToTF(geometry);
} else if (geometry instanceof MultiPolygon) {
this.multiPolygonToTF(geometry);
} else if (geometry instanceof Polygon) {
this.polygonToTF(geometry);
} else if (geometry instanceof Collection) {
//独立几何体
} else if (geometry instanceof Point) {
this.pointToTF(geometry);
} else if (geometry instanceof Rectangle) {
this.rectangleToTF(geometry);
} else if (geometry instanceof GeoText) {
this.geoTextToTF(geometry);
}
}
/**
* @function FeatureThemeVector.prototype.destroy
* @override
*/
destroy() {
this.style = null;
this.dataBounds = null;
this.nodesClipPixel = null;
this.isHoverAble = null;
this.isMultiHover = null;
this.isClickAble = null;
this.highlightStyle = null;
this.shapeOptions = null;
super.destroy();
}
/**
* @function FeatureThemeVector.prototype.lineToTF
* @description 转换线和线环要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 GeometryLineString 或 GeometryLineRing。
*/
lineToTF(geometry) {
var components = geometry.components;
//节点像素坐标
var localLX = [];
//参考位置，参考中心为
var refLocal = [];
var location = this.location;
var pointList = [];
//节点抽稀距离
var nCPx = this.nodesClipPixel;
for (var i = 0; i < components.length; i++) {
var components_i = components[i];
refLocal = [];
localLX = this.getLocalXY(components_i);
refLocal[0] = localLX[0] - location[0];
refLocal[1] = localLX[1] - location[1];
//抽稀 - 2 px
if (pointList.length > 0) {
var lastLocalXY = pointList[pointList.length - 1];
if ((Math.abs(lastLocalXY[0] - refLocal[0]) <= nCPx) && (Math.abs(lastLocalXY[1] - refLocal[1]) <= nCPx)) {
continue;
}
}
//使用参考点
pointList.push(refLocal);
}
if (pointList.length < 2) {
return null;
}
//赋 style
var style = new Object();
style = CommonUtil.copyAttributesWithClip(style, this.style, ['pointList']);
style.pointList = pointList;
//创建图形
var shape = new SmicBrokenLine({
style: style,
clickable: this.isClickAble,
hoverable: this.isHoverAble
});
//设置高亮样式
if (this.highlightStyle) {
shape.highlightStyle = this.highlightStyle;
}
//设置参考中心，指定图形位置
shape.refOriginalPosition = this.location;
//储存数据 id 属性，用于事件
shape.refDataID = this.data.id;
//储存数据 id 属性，用于事件-多图形同时高亮
shape.isHoverByRefDataID = this.isMultiHover;
//添加到渲染器前修改 shape 的一些属性，非特殊情况通常不允许这么做
if (this.shapeOptions) {
CommonUtil.copyAttributesWithClip(shape, this.shapeOptions);
}
this.shapes.push(shape);
}
/**
* @function FeatureThemeVector.prototype.multiPointToTF
* @description 转多点要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 MultiPoint。
*/
multiPointToTF(geometry) {
/* //-- 不抽稀
var components = geometry.components;
for(var i = 0; i < components.length; i++){
var components_i = components[i];
this.pointToTF(components_i);
}
*/
var components = geometry.components;
//节点像素坐标
var localLX = [];
//参考位置，参考中心为
var refLocal = [];
var location = this.location;
var pointList = [];
//节点抽稀距离
var nCPx = this.nodesClipPixel;
for (var i = 0; i < components.length; i++) {
var components_i = components[i];
refLocal = [];
localLX = this.getLocalXY(components_i);
refLocal[0] = localLX[0] - location[0];
refLocal[1] = localLX[1] - location[1];
//抽稀
if (pointList.length > 0) {
var lastLocalXY = pointList[pointList.length - 1];
if ((Math.abs(lastLocalXY[0] - refLocal[0]) <= nCPx) && (Math.abs(lastLocalXY[1] - refLocal[1]) <= nCPx)) {
continue;
}
}
//使用参考点
pointList.push(refLocal);
//赋 style
var style = new Object();
style.r = 6; //防止漏设此参数，默认 6 像素
style = CommonUtil.copyAttributesWithClip(style, this.style);
style.x = refLocal[0];
style.y = refLocal[1];
//创建图形
var shape = new SmicPoint({
style: style,
clickable: this.isClickAble,
hoverable: this.isHoverAble
});
//设置高亮样式
if (this.highlightStyle) {
shape.highlightStyle = this.highlightStyle;
}
//设置参考中心，指定图形位置
shape.refOriginalPosition = location;
//储存数据 id 属性，用于事件
shape.refDataID = this.data.id;
//储存数据 id 属性，用于事件-多图形同时高亮
shape.isHoverByRefDataID = this.isMultiHover;
//修改一些 shape 可选属性，通常不需要这么做
if (this.shapeOptions) {
CommonUtil.copyAttributesWithClip(shape, this.shapeOptions);
}
this.shapes.push(shape);
}
}
/**
* @function FeatureThemeVector.prototype.multiLineStringToTF
* @description 转换多线要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 MultiLineString。
*/
multiLineStringToTF(geometry) {
var components = geometry.components;
for (var i = 0; i < components.length; i++) {
var components_i = components[i];
this.lineToTF(components_i);
}
}
/**
* @function FeatureThemeVector.prototype.multiPolygonToTF
* @description 转换多面要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 MultiPolygon。
*/
multiPolygonToTF(geometry) {
var components = geometry.components;
for (var i = 0; i < components.length; i++) {
var components_i = components[i];
this.polygonToTF(components_i);
}
}
/**
* @function FeatureThemeVector.prototype.pointToTF
* @description 转换点要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 Point。
*/
pointToTF(geometry) {
//参考位置，参考中心为
var location = this.location;
//geometry 像素坐标
var localLX = this.getLocalXY(geometry);
//赋 style
var style = new Object();
style.r = 6; //防止漏设此参数，默认 6 像素
style = CommonUtil.copyAttributesWithClip(style, this.style);
style.x = localLX[0] - location[0];
style.y = localLX[1] - location[1];
//创建图形
var shape = new SmicPoint({
style: style,
clickable: this.isClickAble,
hoverable: this.isHoverAble
});
//设置高亮样式
if (this.highlightStyle) {
shape.highlightStyle = this.highlightStyle;
}
//设置参考中心，指定图形位置
shape.refOriginalPosition = location;
//储存数据 id 属性，用于事件
shape.refDataID = this.data.id;
//储存数据 id 属性，用于事件-多图形同时高亮
shape.isHoverByRefDataID = this.isMultiHover;
//修改一些 shape 可选属性，通常不需要这么做
if (this.shapeOptions) {
CommonUtil.copyAttributesWithClip(shape, this.shapeOptions);
}
this.shapes.push(shape);
}
/**
* @function FeatureThemeVector.prototype.polygonToThemeFeature
* @description 转换面要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 Polygon。
*/
polygonToTF(geometry) {
var components = geometry.components;
//节点像素坐标
var localLX = [];
//参考位置，参考中心为
var refLocal = [];
var location = this.location;
var pointList = [];
//岛洞
var holePolygonPointList = [];
var holePolygonPointLists = [];
//节点抽稀距离
var nCPx = this.nodesClipPixel;
for (var i = 0; i < components.length; i++) {
var components_i = components[i].components;
if (i === 0) {
// 第一个 component 正常绘制
pointList = [];
for (var j = 0; j < components_i.length; j++) {
refLocal = [];
localLX = this.getLocalXY(components_i[j]);
refLocal[0] = localLX[0] - location[0];
refLocal[1] = localLX[1] - location[1];
//抽稀 - 2 px
if (pointList.length > 0) {
var lastLocalXY = pointList[pointList.length - 1];
if ((Math.abs(lastLocalXY[0] - refLocal[0]) <= nCPx) && (Math.abs(lastLocalXY[1] - refLocal[1]) <= nCPx)) {
continue;
}
}
//使用参考点
pointList.push(refLocal);
}
} else {
// 其它 component 作为岛洞
holePolygonPointList = [];
for (var k = 0; k < components_i.length; k++) {
refLocal = [];
localLX = this.getLocalXY(components_i[k]);
refLocal[0] = localLX[0] - location[0];
refLocal[1] = localLX[1] - location[1];
//抽稀 - 2 px
if (holePolygonPointList.length > 0) {
var lastXY = holePolygonPointList[holePolygonPointList.length - 1];
if ((Math.abs(lastXY[0] - refLocal[0]) <= nCPx) && (Math.abs(lastXY[1] - refLocal[1]) <= nCPx)) {
continue;
}
}
//使用参考点
holePolygonPointList.push(refLocal);
}
}
if (holePolygonPointList.length < 2) {
continue;
}
holePolygonPointLists.push(holePolygonPointList);
}
if (pointList.length < 2) {
return;
}
//赋 style
var style = {};
style = CommonUtil.copyAttributesWithClip(style, this.style, ['pointList']);
style.pointList = pointList;
//创建图形
var shape = new SmicPolygon({
style: style,
clickable: this.isClickAble,
hoverable: this.isHoverAble
});
//设置高亮样式
if (this.highlightStyle) {
shape.highlightStyle = this.highlightStyle;
}
//设置参考中心，指定图形位置
shape.refOriginalPosition = this.location;
//储存数据 id 属性，用于事件
shape.refDataID = this.data.id;
//储存数据 id 属性，用于事件-多图形同时高亮
shape.isHoverByRefDataID = this.isMultiHover;
//岛洞面
if (holePolygonPointLists.length > 0) {
shape.holePolygonPointLists = holePolygonPointLists;
}
//修改一些 shape 可选属性，通常不需要这么做
if (this.shapeOptions) {
CommonUtil.copyAttributesWithClip(shape, this.shapeOptions);
}
this.shapes.push(shape);
}
/**
* @function FeatureThemeVector.prototype.rectangleToTF
* @description 转换矩形要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 Rectangle。
*/
rectangleToTF(geometry) {
//参考位置，参考中心为
var location = this.location;
var ll = new LonLat(geometry.x, geometry.y);
//地图分辨率
var res = this.layer.map.getResolution();
//geometry 像素坐标
var localLX = this.getLocalXY(ll);
//赋 style
var style = new Object();
style.r = 6; //防止漏设此参数，默认 6 像素
style = CommonUtil.copyAttributesWithClip(style, this.style);
style.x = localLX[0] - location[0];
// Rectangle 使用左下角定位， SmicRectangle 使用左上角定位，需要转换
style.y = (localLX[1] - location[1]) - 2 * geometry.width / res;
style.width = geometry.width / res;
style.height = geometry.height / res;
//创建图形
var shape = new SmicRectangle({
style: style,
clickable: this.isClickAble,
hoverable: this.isHoverAble
});
//设置高亮样式
if (this.highlightStyle) {
shape.highlightStyle = this.highlightStyle;
}
//设置参考中心，指定图形位置
shape.refOriginalPosition = location;
//储存数据 id 属性，用于事件
shape.refDataID = this.data.id;
//储存数据 id 属性，用于事件-多图形同时高亮
shape.isHoverByRefDataID = this.isMultiHover;
//修改一些 shape 可选属性，通常不需要这么做
if (this.shapeOptions) {
CommonUtil.copyAttributesWithClip(shape, this.shapeOptions);
}
this.shapes.push(shape);
}
/**
* @function FeatureThemeVector.prototype.geoTextToTF
* @description 转换文本要素。
* @param {Geometry} geometry - 用户数据几何地理信息，这里必须是 GeoText。
*/
geoTextToTF(geometry) {
//参考位置，参考中心为
var location = this.location;
//geometry 像素坐标
var localLX = this.getLocalXY(geometry);
//赋 style
var style = new Object();
style.r = 6; //防止漏设此参数，默认 6 像素
style = CommonUtil.copyAttributesWithClip(style, this.style, ["x", "y", "text"]);
style.x = localLX[0] - location[0];
style.y = localLX[1] - location[1];
style.text = geometry.text;
//创建图形
var shape = new SmicText({
style: style,
clickable: this.isClickAble,
hoverable: this.isHoverAble
});
//设置高亮样式
if (this.highlightStyle) {
shape.highlightStyle = this.highlightStyle;
}
//设置参考中心，指定图形位置
shape.refOriginalPosition = location;
//储存数据 id 属性，用于事件
shape.refDataID = this.data.id;
//储存数据 id 属性，用于事件-多图形同时高亮
shape.isHoverByRefDataID = this.isMultiHover;
//修改一些 shape 可选属性，通常不需要这么做
if (this.shapeOptions) {
CommonUtil.copyAttributesWithClip(shape, this.shapeOptions);
}
this.shapes.push(shape);
}
/**
* @function FeatureThemeVector.prototype.updateAndAddShapes
* @description 修改位置，针对地图平移操作，地图漫游操作后调用此函数。
*/
updateAndAddShapes() {
var newLocalLX = this.getLocalXY(this.lonlat);
this.location = newLocalLX;
var render = this.layer.renderer;
for (var i = 0, len = this.shapes.length; i < len; i++) {
var shape = this.shapes[i];
//设置参考中心，指定图形位置
shape.refOriginalPosition = newLocalLX;
render.addShape(shape);
}
}
/**
* @function FeatureThemeVector.prototype.getShapesCount
* @description 获得专题要素中可视化图形的数量。
* @returns {number} 可视化图形的数量。
*/
getShapesCount() {
return this.shapes.length;
}
/**
* @function FeatureThemeVector.prototype.getLocalXY
* @description 地理坐标转为像素坐标。
* @param {LonLat} lonlat - 专题要素地理位置。
*/
getLocalXY(lonlat) {
return this.layer.getLocalXY(lonlat);
}
}