function  MyDynDrawCommentWorldDraw(pt1)
 {
     var _pt1 = pt1;

    this.worldDraw = function(currentPoint)
    {
        this.drawLine(currentPoint,_pt1);


        var sText = "测试Test";
        var txtH =  MxFun.screenCoordLong2Doc(50);
        var ptTxt = new THREE.Vector3;
        var dTxtWidth = txtH * 6.0;

        ptTxt.x = currentPoint.x + txtH * 0.3 + dTxtWidth *  0.5;
        ptTxt.y = currentPoint.y + txtH * 0.1 + txtH * 0.5;
        this.drawText(sText,txtH,0.0,ptTxt);

        var pt3 = new THREE.Vector3;
        pt3.x = currentPoint.x + dTxtWidth;;
        pt3.y = currentPoint.y
        this.drawLine(pt3,currentPoint);

    }
}

mxModule.regist(()=>{
    MxFun.addCommand("Mx_Comment",()=>{

        // ..
        var getPoint = new MrxDbgUiPrPoint();
        getPoint.go((status)=>{

            if(status != 0)
            {
                console.log(status);
                return;
            }

            var pt1 = getPoint.value();
            getPoint.setBasePt(pt1);
            getPoint.setUseBasePt(true);

            MyDynDrawCommentWorldDraw.prototype = new McEdGetPointWorldDraw();
            var worldDrawComment = new MyDynDrawCommentWorldDraw(getPoint.value());
            getPoint.setUserDraw(worldDrawComment);
            getPoint.go((status)=>{
                if(status != 0)
                {
                    console.log(status);
                    return;
                }

                var currentPoint = getPoint.value();

                var scene = MxFun.getCurrentDraw().getDrawContainer();
                
                var iColor = 0XFFFFFF;
                
                scene.add(MxThreeJS.createLine(currentPoint,pt1,iColor));


                var sText = "测试Test";
                var txtH =  MxFun.screenCoordLong2Doc(50);
                var ptTxt = new THREE.Vector3;
                var dTxtWidth = txtH * 6.0;
        
                ptTxt.x = currentPoint.x + txtH * 0.3 + dTxtWidth *  0.5;
                ptTxt.y = currentPoint.y + txtH * 0.1 + txtH * 0.5;
                

                scene.add(MxThreeJS.creatTextSprite(sText,ptTxt,txtH,0.0,iColor) );
        
                var pt3 = new THREE.Vector3;
                pt3.x = currentPoint.x + dTxtWidth;;
                pt3.y = currentPoint.y

                scene.add(MxThreeJS.createLine(currentPoint,pt3,iColor));

                MxFun.updateDisplay();

            });


            
        });

        // ..
    });

})