CAD交互绘制圆形云线批注（网页版）

js中实现代码说明：

动态拖放时的绘制事件：

function DoDynWorldDrawFun(dX,dY,pWorldDraw,pData) {
    //自定义实体的GUID标识符
    var sGuid = pData.Guid;
    //设置自定义事件的返回值
    mxOcx.SetEventRet(0);

    var curPt = mxOcx.NewPoint();
    curPt.x = dX;
    curPt.y = dY;
    if (sGuid == "DrawCircle") {
    var pt1 = pData.GetPoint("pt1");
    var dR = curPt.DistanceTo(pt1) * 0.5;
    var vec = curPt.SumVector(pt1);
    vec.Mult(0.5);
    pt1.Add(vec);
    pWorldDraw.DrawCircle(pt1.x, pt1.y, dR);
}

}

动态拖放时的绘制事件：

function DynWorldDrawCloudComment(pCustomEntity, pWorldDraw, curPt) {
    // 得到绘制参数.
    var sText = pCustomEntity.GetString("Text");
    var dTextHeight = pCustomEntity.GetDouble("TextHeight");
    var iEdgeNumber = pCustomEntity.GetLong("EdgeNumber");
    var dShapRadius = pCustomEntity.GetDouble("ShapRadius");
    var basePoint = pCustomEntity.GetPoint("BasePoint");
    var frstPt = pCustomEntity.GetPoint("frstPt");
    // 创建一个批注对象.
    var comment = mxOcx.NewEntity("IMxDrawComment");
    comment.Text = sText;
    comment.TextHeight = dTextHeight;
    comment.EdgeNumber = iEdgeNumber;
    comment.ShapRadius = dShapRadius;
    comment.basePoint = basePoint;
    comment.Position = curPt;
    comment.BoundingBoxType = 5;
    comment.ArrowType = 2;
    comment.ShapRadius = 40;
    var points = mxOcx.NewComObject("IMxDrawPoints");
    //向点数组中增加一个点坐标
    points.Add2(frstPt);
    points.Add2(basePoint);
    //标注框坐标数据
    comment.Bounding = points;
    var tmpp = mxOcx.NewResbuf();
    tmpp.AddLong(1);
    comment.SetProp("isAlwaysShowLineWeight", tmpp);
    //线重
    comment.Lineweight = 25;
    //实体的CAD颜色索引值属性
    comment.colorIndex = 1;
    // 设置文字样式。
    pWorldDraw.TextStyle = "MyCommentFont";
    // 动态绘制.
    pWorldDraw.DrawEntity(comment);
}

动态绘制文字：

function DoCloudCircleComment() {
    var getPt = mxOcx.NewComObject("IMxDrawUiPrPoint");
    getPt.message = "点取第一点";
    if (getPt.go() != 1) {
        return;
    }
    var frstPt = getPt.value();
    if (frstPt == null)
        return;
    var getPt2 = mxOcx.NewComObject("IMxDrawUiPrPoint");
    getPt2.message = "指定第二个点";
    var spDrawData = getPt2.InitUserDraw("DrawCircle");
    spDrawData.SetPoint("pt1", frstPt);
    if (getPt2.go() != 1) {
        return;
    }
    var secondPt = getPt2.value();
    if (secondPt == null)
        return;
    var param = mxOcx.NewResbuf();
    param.AddString("");
    param.AddDouble(100);
    var ret = mxOcx.CallEx("Mx_ShowMTextDialog", param);
    if (ret.AtString(0) != "Ok") {
        return;
    }
    var txt = ret.AtString(1);
    var txtH = ret.AtDouble(2);
    var txtColorIndex = ret.AtLong(3);
    // 加入换行操作符\\P
    //txt = txt + "\\PTEST";
    // 创建一个文字样式,用于批注文字字体.
    mxOcx.AddTextStyle2("MyCommentFont", "黑体", 0.7);
    // 创建一个与用户交互取点的对象。
    var getSecondPt = mxOcx.NewComObject("IMxDrawUiPrPoint");
    getSecondPt.message = "输入标注位置点";
    getSecondPt.basePoint = secondPt;
    getSecondPt.setUseBasePt(false);
    spDrawData = getSecondPt.InitUserDraw("DrawCloudComment");
    // 设置动态绘制参数.
    spDrawData.SetPoint("frstPt", frstPt);
    spDrawData.SetPoint("BasePoint", secondPt);
    spDrawData.SetString("Text", txt);
    spDrawData.SetDouble("TextHeight", txtH);
    spDrawData.SetLong("EdgeNumber", 2);
    spDrawData.SetDouble("ShapRadius", 1);
    // 开始取第二个点。
    if (getSecondPt.go() != 1)
        return;
    var ret = spDrawData.Draw();
    // 设置绘制的批注文字样式。
    var ent = ret.AtObject(0);
    ent.colorIndex = 1;
}