drawTool.js
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import createBillboard from './createBillboard';
import createPolyline from './createPolyline';
import createPolygon from './createPolygon';
import createCircle from './createCircle';
import createRectangle from './createRectangle';
export default {
drawTool: class DrawTool {
constructor(obj) {
if (!obj.viewer || !obj) {
console.warn("缺少必要参数！--viewer");
return;
}
this.viewer = obj.viewer;
this.hasEdit = obj.hasEdit;
this.toolArr = [];
this.handler = new Cesium.ScreenSpaceEventHandler(this.viewer.scene.canvas);
this.show = obj.drawEndShow;
// this.lastSelectEntity = null;
}
startDraw(opt) {
var that = this;
if (opt.type == "polyline") {
var polyline = new createPolyline(this.viewer, opt.style);
polyline.start(function (evt) {
if (that.hasEdit) {
that.unbindEdit();
polyline.startModify(opt.modifySuccess);
that.lastSelectEntity = polyline;
}
if (opt.success) opt.success(evt);
if (that.show == false) polyline.setVisible(false);
});
this.toolArr.push(polyline);
}
if (opt.type == "polygon") {
var polygon = new createPolygon(this.viewer, opt.style);
polygon.start(function () {
if (that.hasEdit) {
that.unbindEdit();
polygon.startModify();
that.lastSelectEntity = polygon;
}
if (opt.success) opt.success(polygon);
if (that.show == false) polygon.setVisible(false);
});
this.toolArr.push(polygon);
}
if (opt.type == "billboard") {
var billboard = new createBillboard(this.viewer, opt.style);
billboard.start(function () {
if (that.hasEdit) {
that.unbindEdit();
billboard.startModify();
that.lastSelectEntity = billboard;
}
if (opt.success) opt.success(billboard);
if (that.show == false) billboard.setVisible(false);
});
this.toolArr.push(billboard);
}
if (opt.type == "circle") {
var circle = new createCircle(this.viewer, opt.style);
circle.start(function () {
if (that.hasEdit) {
that.unbindEdit();
circle.startModify();
that.lastSelectEntity = circle;
}
if (opt.success) opt.success(circle);
if (that.show == false) circle.setVisible(false);
});
this.toolArr.push(circle);
}
if (opt.type == "rectangle") {
var rectangle = new createRectangle(this.viewer, opt.style);
rectangle.start(function () {
if (that.hasEdit) {
that.unbindEdit();
rectangle.startModify();
that.lastSelectEntity = rectangle;
}
if (opt.success) opt.success(rectangle);
if (that.show == false) rectangle.setVisible(false);
});
this.toolArr.push(rectangle);
}
//重写材质
if (opt.type == "flowPolyline") {
var polyline = new CreatePolyline(this.viewer, opt.style);
polyline.start(function () {
if (that.hasEdit) {
that.unbindEdit();
polyline.startModify();
}
if (opt.success) opt.success(polyline);
});
this.toolArr.push(polyline);
}
}
createByPositions(opt) {
if (this.hasEdit) {
this.bindEdit();
}
if (!opt) opt = {};
if (opt.type == "polyline") {
var polyline = new CreatePolyline(this.viewer, opt.style);
polyline.createByPositions(opt.positions, opt.success);
this.toolArr.push(polyline);
}
if (opt.type == "polygon") {
var polygon = new CreatePolygon(this.viewer, opt.style);
polygon.createByPositions(opt.positions, opt.success);
this.toolArr.push(polygon);
}
if (opt.type == "billboard") {
var billboard = new CreateBillboard(this.viewer, opt.style);
billboard.createByPositions(opt.positions, function(){
if(opt.success) opt.success(billboard)
});
this.toolArr.push(billboard);
}
}
destroy() {
for (var i = 0; i < this.toolArr.length; i++) {
var obj = this.toolArr[i];
obj.destroy();
}
}
bindEdit() {
var that = this;
this.handler.setInputAction(function (evt) { //单机开始绘制
var pick = that.viewer.scene.pick(evt.position);
if (Cesium.defined(pick) && pick.id) {
for (var i = 0; i < that.toolArr.length; i++) {
if (pick.id.objId == that.toolArr[i].objId && (that.toolArr[i].state == 1||that.toolArr[i].state == 2)) {
if (that.lastSelectEntity) {
that.lastSelectEntity.endModify();
}
that.toolArr[i].startModify();
that.lastSelectEntity = that.toolArr[i];
break;
}
}
}
}, Cesium.ScreenSpaceEventType.LEFT_CLICK);
}
unbindEdit() {
for (var i = 0; i < this.toolArr.length; i++) {
this.toolArr[i].endModify();
}
}
getCatesian3FromPX(px, viewer, entitys) {
var picks = viewer.scene.drillPick(px);
this.viewer.scene.render();
var cartesian;
var isOn3dtiles = false;
for (var i = 0; i < picks.length; i++) {
var isContinue = false;
for (var step = 0; step < entitys.length; step++) {
if (entitys[step] && picks[i].id && entitys[step].objId == picks[i].id.objId) {
isContinue = true;
break;
}
}
if (isContinue) continue;
if ((picks[i] && picks[i].primitive) || picks[i] instanceof Cesium.Cesium3DTileFeature) { //模型上拾取
isOn3dtiles = true;
}
}
if (isOn3dtiles) {
cartesian = viewer.scene.pickPosition(px);
} else {
var ray = viewer.camera.getPickRay(px);
if (!ray) return null;
cartesian = viewer.scene.globe.pick(ray, viewer.scene);
}
return cartesian;
}
}
}