使用产品：iserver 8c 810 操作系统 win10 x64
数据类型：
问题详细描述：3D for plugin 开发，使用三维量算：依地面积量算，无论如何操作结果都为0。
//依地面积量测
function MeasurerTerrainArea() {
var sceneControltool = parent.sceneControl;
var SuperMap = parent.SuperMap;
//设置控件的当前操作为面积量算
var measureAreaAction = new SuperMap.Web.UI.Action3Ds.MeasureTerrainArea(sceneControltool);
sceneControltool.set_sceneAction(measureAreaAction);
//给面积量算事件和量算结束事件注册回调函数
altitudeMode = 0;
tag = "MeasureTerrainArea";
sceneControltool.addEvent("measureArea", areaHandler);
sceneControltool.addEvent("measureAreaFinished", areaFinishedHandler);
}
function areaHandler(dArea) {
//量算过程中及时的显示量算信息
//document.getElementById("MeasureInfo").innerHTML = "<div>" + "面积：" + dArea + "平方米" + "</div>";
window.status = "面积：" + dArea + "平方米";
}
function areaFinishedHandler(dArea, region3d) {
var unit = '平方米';
if(dArea > 1000000) {
unit = "平方千米";
dArea = dArea / 1000000;
}
var text = '总面积：' + dArea.toFixed(2) + unit;
//document.getElementById("MeasureInfo").innerHTML = "<div>" + text + "</div>";
addGeometryToScene(region3d, tag);
AddGeometryPoint(region3d);
/*添加标注字体*/
var point3D = region3d.get_innerPoint3D();
addTextToScene(text, point3D, "MeasureArea");
pan();
$('#layerFormFour').contents().find('.tool-box ul li').siblings().removeClass('tool-ba');
}
//设置控件的当前操作为距离量算
function addGeometryToScene(geometry, tag) {
var scenetool = parent.scene;
var SuperMap = parent.SuperMap;
var feature3D = new SuperMap.Web.Core.Feature3D();
feature3D.set_geometry(geometry);
var style3d = new SuperMap.Web.Core.Style3D();
style3d.set_altitudeMode(altitudeMode);
style3d.set_markerColor(new SuperMap.Web.Core.Color(255, 0, 255, 250));
style3d.set_lineWidth(1.5);
style3d.set_lineColor(new SuperMap.Web.Core.Color(255, 255, 0, 255));
style3d.set_fillForeColor(new SuperMap.Web.Core.Color(255, 255, 0, 50));
feature3D.set_style3D(style3d);
scenetool.get_trackingLayer3D().add(feature3D, tag);
}
//量算结果加载到场景上
function addTextToScene(text, position, tag) {
var scenetool = parent.scene;
var SuperMap = parent.SuperMap;
var feature3D = new SuperMap.Web.Core.Feature3D();
var geoText3D = new SuperMap.Web.Core.GeoText3D();
var textPart3D = new SuperMap.Web.Core.TextPart3D(text, position);
geoText3D.addPart(textPart3D);
feature3D.set_geometry(geoText3D);
var style3d = new SuperMap.Web.Core.Style3D();
style3d.set_altitudeMode(SuperMap.Web.Realspace.AltitudeMode.ABSOLUTE);
var textStyle = new SuperMap.Web.Core.TextStyle3D();
textStyle.set_outline(true);
textStyle.set_foreColor(new SuperMap.Web.Core.Color(255, 255, 0, 255));
textStyle.set_backColor(new SuperMap.Web.Core.Color(0, 0, 0, 255));
textStyle.set_isSizeFixed(true);
textStyle.set_fontScale(0.9);
feature3D.set_textStyle3D(textStyle);
feature3D.set_style3D(style3d);
scenetool.get_trackingLayer3D().add(feature3D, tag);
}
