script for illustrator connects two objects in a bezier curve (vertical)

bezierConnection_vertical.js

/**
 * Created with JetBrains WebStorm.
 * Date: 12/05/02
 * Time: 13:05
 */

sel = activeDocument.selection;

function getCenter(_obj){
    var position = _obj.position;
    position[0]=position[0]+_obj.width/2.0;     //x
    position[1]=position[1]-_obj.height/2.0;     //y
    return position;
}

function flipCoordinates(_pArry){
    var temp0=_pArry[0];
    var result =[];
    result[0]=_pArry[1];
    result[1]=temp0;

    return result;
}

function isOrderlowY(_obj1,_obj2){
    var o1C=getCenter(_obj1);
    var o2C=getCenter(_obj2);
    if(o1C[1]<o2C[1]) return true;
    else return false;
}

doc = activeDocument;
sel = doc.selection;
if (! sel.length==2) alert("select two objects you want to connect!");

else{
    bLine=doc.pathItems.add();
    bLine.filled = false;  //　塗りなし
    bLine.stroked = true;	//　線あり
    bLine.strokeWidth = 0.3;	//　線幅1ポイント

    var pts;
    if(isOrderlowY(sel[0],sel[1]))pts=sel;
    else pts=flipCoordinates(sel);

    deltaY=(getCenter(pts[1])[1]-getCenter(pts[0])[1])/2.0;

    pathObj=bLine.pathPoints.add();
    pathObj.anchor = getCenter(pts[0]);

    pathObj.leftDirection=[getCenter(pts[0])[0],-deltaY+getCenter(pts[0])[1]];
    pathObj.rightDirection=[getCenter(pts[0])[0],+deltaY+getCenter(pts[0])[1]];

    pathObj=bLine.pathPoints.add();
    pathObj.anchor = getCenter(pts[1]);
    pathObj.leftDirection=[getCenter(pts[1])[0],-deltaY+getCenter(pts[1])[1]];
    pathObj.rightDirection=[getCenter(pts[1])[0],+deltaY+getCenter(pts[1])[1]];

}