getCellValue

Returns a boolean value describing the value of this heddle as true, false, or unset.

Parameters

Cell

Returns

boolean (corresponding to heddle up or down) or null (meaning heddle is unset)

returns	meaning	is_set	is_up
true	heddle is up / lifted	true	true
false	heddle is down / lowered	true	false
null	heddle is unset	false	false

Implementation

if(getCellValue(c) == null){
    c = setCellValue(true);
}

This function checks if Cell c is unset and, if so, it changes it to be true.