flowAnalysis.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>流向分析</title>
<script src="/static/js/jquery-3.4.1.min.js"></script>
<script src="/static/js/JavaScript.js"></script>
<script src="/static/js/popupJS.js"></script>
<script src="/static/js/layui/layui.js"></script>
<link rel="stylesheet" href="/static/js/layui/css/layui.css">
<link rel="stylesheet" href="/static/css/analysis.css">
<style>
.tiaojian .short-search-btn {
width: 30%;
}
</style>
</head>
<body marginwidth="0" marginheight="0">
<div id="mainDiv" class="dialog tiaojian">
<h1 class="title" onmousedown="MouseDown(event)" onmouseup="MouseUp(event)" onmouseout="MouseUp(event)">
流向分析<i class="guanbibtn" onclick="Close()">X</i>
</h1>
<form class="main" label-width="70px" label-position="left">
<div class="filter">
<h1 class="filter-title">参数设置</h1>
<div style="padding:20px;">
<button type="button" class="short-search-btn" onclick="selectPipe()">选择管线</button>
<button type="button" class="short-search-btn" onclick="stopSelect()">结束选择</button>
<button type="button" class="short-search-btn" onclick="clearArrow()">清除</button>
</div>
</div>
</form>
</div>
</body>
<script>
var groupID = "";
var arrowList = [];
function selectPipe() {
var sgworld = CreateSGObj();
sgworld.AttachEvent("OnLButtonClicked", flowAnalysisLBClick);
sgworld.Window.SetInputMode(1, "", true);
}
function stopSelect() {
var sgworld = CreateSGObj();
sgworld.DetachEvent("OnLButtonClicked", flowAnalysisLBClick);
sgworld.Window.SetInputMode(0, "", true);
}
function clearArrow() {
var sgworld = CreateSGObj();
sgworld.ProjectTree.DeleteItem(groupID);
}
function flowAnalysisLBClick(Flags, X, Y) {
var sgworld = CreateSGObj();
var wpi = sgworld.Window.PixelToWorld(X, Y, -1);
if (null === wpi) {
return false;
}
var obj = sgworld.ProjectTree.GetObject(wpi.ObjectID);
if (obj.ObjectType === 33)//选中的对象是图层中的一个要素，而不是单个模型、标签等对象时
{
if (obj.Geometry.GeometryType === 0)//Point
{
//点图层的话需要知道 点的位置和目标点的位置
//目标点的位置恐怕需要根据图层中的数据获取
pointObjSelected(obj);
}
else if (obj.Geometry.GeometryType === 1 || obj.Geometry.GeometryType === 2)//1-LineString；2-LinearRing
{
//通过前一个点和后一个点的相互关系来获取
lineObjSelected(obj);
}
else {
//POLYGON = 3 MULTILINESTRING = 5 MULTIPOLYGON = 6
}
}
}
//点图层的话需要根据点图层的属性值来获取方向和长度
function pointObjSelected(obj) {
var sgworld = CreateSGObj();
var layer = sgworld.ProjectTree.GetObject(obj.LayerID);
var yaw = obj.FeatureAttributes.GetFeatureAttribute("Yaw").Value;
var pitch = obj.FeatureAttributes.GetFeatureAttribute("Pitch").Value;
var length = obj.FeatureAttributes.GetFeatureAttribute("Length").Value;
var startP = sgworld.Creator.CreatePosition(obj.Geometry.X, obj.Geometry.Y, obj.Geometry.Z, layer.Position.AltitudeType, yaw, pitch);
if (length >= 3) {
for (var i = 0; i < length / 2; i++) {
var pos = startP.Move(2 * i + 1, yaw, pitch);
var arrow = createArrow(pos);
arrowList.push(arrow.ID);
}
} else {
var arrow = createArrow(startP);
arrowList.push(arrow.ID);
}
}
function lineObjSelected(obj) {
obj.Geometry.StartEdit();
var points = obj.Geometry.Points;//获取线或环的所有点
//points.Count-1 获取倒数第二个为止，这样就可以在最后一次获取倒数第二个和倒数第一个点之间的线段
for (var i = 0; i < points.Count - 1; i++) {
drawArrow(points.Item(i), points.Item(i + 1));
}
obj.Geometry.EndEdit();
}
function drawArrow(startP, endP) {
var sgworld = CreateSGObj();
var pos1 = sgworld.Creator.CreatePosition(startP.X, startP.Y, startP.Z);
var pos2 = sgworld.Creator.CreatePosition(endP.X, endP.Y, endP.Z);
var linelength = pos1.Distance(pos2);
pos1.AimTo(pos2);
if (linelength >= 3)//箭头长度的3倍，一倍的剪头自身长度，一倍的间隔长度，一倍的第二个箭头长度
{
for (var i = 0; i < linelength / 2; i++) {
var pos = pos1.MoveToward(pos2, 2 * i + 1);
pos.AimTo(pos2);
var arrow = createArrow(pos);
arrowList.push(arrow.ID);
}
} else {
var arrow = createArrow(pos);
arrowList.push(arrow.ID);
}
}
function createArrow(pos) {
//alert("进入createArrow");
var sgworld = CreateSGObj();
var linecolor = sgworld.Creator.CreateColor(255, 0, 0, 1);
var fillcolor = sgworld.Creator.CreateColor(0, 0, 255, 1);
if (groupID === "") {
groupID = sgworld.ProjectTree.CreateGroup("流向标志", "");
}
pos.Altitude = pos.Altitude + 1;
return sgworld.Creator.CreateArrow(pos, 1, 4, linecolor, fillcolor, groupID, "");
}
</script>
</html>