mxGraph.prototype.getConnectionConstraint=function(a,b,c){b=null;var d=a.style[c?mxConstants.STYLE_EXIT_X:mxConstants.STYLE_ENTRY_X];if(null!=d){var e=a.style[c?mxConstants.STYLE_EXIT_Y:mxConstants.STYLE_ENTRY_Y];null!=e&&(b=new mxPoint(parseFloat(d),parseFloat(e)))}d=!1;var f=e=0;null!=b&&(d=mxUtils.getValue(a.style,c?mxConstants.STYLE_EXIT_PERIMETER:mxConstants.STYLE_ENTRY_PERIMETER,!0),e=parseFloat(a.style[c?mxConstants.STYLE_EXIT_DX:mxConstants.STYLE_ENTRY_DX]),f=parseFloat(a.style[c?mxConstants.STYLE_EXIT_DY: