gridAreaFinder.js

// TODO: Add comments
var GRID_BASE = 8,
    ySize = parseInt(scope.ysize),
    xSize = parseInt(scope.xsize),
    startPosition = parseInt(scope.startposition),
    quadrantArea = [],
    yStartPosition = Math.floor(startPosition / GRID_BASE),
    xStartPosition = startPosition % GRID_BASE;

for (i = 0; i < ySize; i++) {
    for (j = 0; j < xSize; j++) {
        gridArea.push(GRID_BASE * (yStartPosition + i) + (xStartPosition + j));
    }
}