Function: getCellPositionByIndex()

function getCellPositionByIndex(
   row, 
   column, 
   rowHeightAccumulation, 
   columnWidthAccumulation): {
  endX: number;
  endY: number;
  startX: number;
  startY: number;
}

{
  endX: number;
  endY: number;
  startX: number;
  startY: number;
}