tool.js
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export default {
attributes: {
drawPolt: class DrawPolt {
constructor(arg) {
this.viewer = arg.viewer;
this.type = {};
this._billboardArr = [];
this._lineArr = [];
this._gonArr = [];
this.handler = null;
}
get billboardArr() {
return this._billboardArr;
}
get polylineArr() {
return this._lineArr;
}
get polygonArr() {
return this._gonArr;
}
create(e) {
this.type[e].startCreate();
}
clearAll() {
for (var i = 0; i < this._lineArr.length; i++) {
var line = this._lineArr[i];
line.destroy();
}
this._lineArr = [];
for (var j = 0; j < this._gonArr.length; j++) {
var gon = this._gonArr[j];
gon.destroy();
}
this._gonArr = [];
for (var k = 0; k < this._billboardArr.length; k++) {
var billboard = this._billboardArr[k];
billboard.destroy();
}
this._billboardArr = [];
}
clearOne() {
if (!this.handler) {
this.handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);
}
var that = this;
this.handler.setInputAction(function (evt) {
var pick = that.viewer.scene.pick(evt.position);
if (Cesium.defined(pick) && pick.id) {
that.viewer.entities.remove(pick.id);
that.handler.destroy();
that.handler = null;
}
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
}
},
polygon: class DrawPolygon {
constructor(arg) {
this.objId = Number((new Date()).getTime() + "" + Number(Math.random() * 1000).toFixed(0));
this.viewer = arg.viewer;
this.handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);
this._polygon = null;
this._polyline = null;
this._positions = [];
}
get polygon() {
return this._polygon;
}
get positions() {
return this._positions;
}
startCreate(func) {
var $this = this;
this.handler.setInputAction(function (evt) { //单机开始绘制
var cartesian = $this.getCatesian3FromPX(evt.position);
if ($this._positions.length == 0) {
$this._positions.push(cartesian.clone());
}
$this._positions.push(cartesian);
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
this.handler.setInputAction(function (evt) { //移动时绘制面
if ($this._positions.length < 1) return;
var cartesian = $this.getCatesian3FromPX(evt.endPosition);
if ($this._positions.length == 2) {
if (!Cesium.defined($this._polyline)) {
$this._polyline = $this.createPolyline();
}
}
if ($this._positions.length == 3) {
if ($this._polyline){
$this.viewer.entities.remove($this._polyline);
$this._polyline = null;
}
if (!Cesium.defined($this._polygon)) {
$this._polygon = $this.createPolygon();
$this._polygon.objId = $this.objId;
}
}
$this._positions.pop();
$this._positions.push(cartesian);
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
this.handler.setInputAction(function (evt) {
if (!$this._polygon) return;
var cartesian = $this.getCatesian3FromPX(evt.position);
$this.handler.destroy();
$this._positions.pop();
$this._positions.push(cartesian);
func && func($this._positions);
}, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
}
createPolygon(obj) {
var $this = this;
return this.viewer.entities.add({
polygon: {
hierarchy: new Cesium.CallbackProperty(function () {
return new Cesium.PolygonHierarchy($this._positions);
}, false),
// clampToGround: true,
// show: true,
// fill: false,
// material: Cesium.Color.RED,
// width: 3,
material: new Cesium.Color.fromCssColorString("#FFD700").withAlpha(.2),
perPositionHeight: true,
outlineColor: Cesium.Color.BLACK,
outlineWidth: 3,
outline: true
}
});
}
createPolyline() {
var $this = this;
return this.viewer.entities.add({
polyline: {
positions: new Cesium.CallbackProperty(function () {
return $this._positions
}, false),
clampToGround: true,
material: Cesium.Color.YELLOW,
width: 5
}
});
}
getCatesian3FromPX(px) {
var cartesian;
var ray = this.viewer.camera.getPickRay(px);
if (!ray) return null;
cartesian = this.viewer.scene.globe.pick(ray, this.viewer.scene);
return cartesian;
}
destroy() {
if (this.handler) {
this.handler.destroy();
this.handler = null;
}
if (this._polygon) {
this.viewer.entities.remove(this._polygon);
this._polygon = null;
}
if (this._polyline) {
this.viewer.entities.remove(this._polyline);
this._polyline = null;
}
this._positions = [];
}
},
point: class DrawBillboard {
constructor(arg) {
this.objId = Number((new Date()).getTime() + "" + Number(Math.random() * 1000).toFixed(0));
this.viewer = arg.viewer;
this._position = null;
this._billboard = null;
}
get billboard() {
return this._billboard;
}
get position() {
return this._position;
}
startCreate() {
var $this = this;
this.handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);
this.handler.setInputAction(evt => { //单机开始绘制
var cartesian = $this.getCatesian3FromPX(evt.position);
// if(!Cesium.defined($this._billboard)){
// $this._billboard = $this.createBillboard(cartesian);
// $this.handler.destroy();
// }
this.handler.destroy();
this.handler = undefined;
this.createBillboard(cartesian);
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
}
createBillboard(cartesian) {
var billboard = this.viewer.entities.add({
position: cartesian,
point: {
color: Cesium.Color.SKYBLUE,
pixelSize: 10,
outlineColor: Cesium.Color.YELLOW,
outlineWidth: 3,
disableDepthTestDistance: Number.POSITIVE_INFINITY
}
});
billboard.objId = this.objId;
return billboard;
}
destroy() {
if (this.handler) {
this.handler.destroy();
this.handler = null;
}
if (this._billboard) {
this.viewer.entities.remove(this._billboard);
this._billboard = null;
}
this._position = null;
}
getCatesian3FromPX(px) {
var cartesian;
var ray = this.viewer.camera.getPickRay(px);
if (!ray) return null;
cartesian = this.viewer.scene.globe.pick(ray, this.viewer.scene);
return cartesian;
}
},
polyline: class DrawPolyline {
constructor(arg) {
//设置唯一id 备用
this.objId = Number((new Date()).getTime() + "" + Number(Math.random() * 1000).toFixed(0));
this.viewer = arg.viewer;
//事件
this.handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);
this._polyline = null;
this._positions = [];
}
//获取线
get line(){
return this._polyline;
}
//获取线的坐标数组
get positions(){
return this._positions;
}
//开始创建
startCreate() {
var $this = this;
this.handler.setInputAction(function (evt) { //单机开始绘制
//屏幕坐标转地形上坐标
var cartesian = $this.getCatesian3FromPX(evt.position);
if ($this._positions.length == 0) {
$this._positions.push(cartesian.clone());
}
$this._positions.push(cartesian);
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
this.handler.setInputAction(function (evt) { //移动时绘制线
if ($this._positions.length < 1) return;
var cartesian = $this.getCatesian3FromPX(evt.endPosition);
if ($this._positions.length == 2) {
if (!Cesium.defined($this._polyline)) {
$this._polyline = $this.createPolyline();
}
}
if ($this._polyline) {
$this._positions.pop();
$this._positions.push(cartesian);
}
}, Cesium.ScreenSpaceEventType.MOUSE_MOVE);
this.handler.setInputAction(function (evt) { //单机开始绘制
if (!$this._polyline) return;
var cartesian = $this.getCatesian3FromPX(evt.position);
$this.handler.destroy();
$this._positions.pop();
$this._positions.push(cartesian);
}, Cesium.ScreenSpaceEventType.RIGHT_CLICK);
}
createPolyline(obj) {
if (!obj) obj = {};
var $this = this;
var polyline = this.viewer.entities.add({
polyline: {
//使用cesium的peoperty
positions: new Cesium.CallbackProperty(function () {
return $this._positions
}, false),
show: true,
material: Cesium.Color.YELLOW,
width:5 ,
clampToGround:true
}
});
polyline.objId = this.objId;
return polyline;
}
destroy() {
this.linePointArr = [];
if (this.handler) {
this.handler.destroy();
this.handler = null;
}
if (this._polyline) {
this.viewer.entities.remove(this._polyline);
this._polyline = null;
}
this._positions = [];
}
getCatesian3FromPX(px) {
var cartesian;
var ray = this.viewer.camera.getPickRay(px);
if (!ray) return null;
cartesian = this.viewer.scene.globe.pick(ray, this.viewer.scene);
return cartesian;
}
}
}
}