Function offsetValue

docs/app/js/sanddance-app.js:120412–120414

(v)

    return v != null ? v : d !== undefined ? d : 0;
}
function offsetValue(v) {
    return v < 0 ? Math.ceil(-v) : 0;
}
function gridLayout(view, groups, opt) {
    var dirty = !opt.nodirty, bbox = opt.bounds === Flush ? bboxFlush : bboxFull, bounds = tempBounds.set(0, 0, 0, 0), alignCol = get(opt.align, Column), alignRow = get(opt.align, Row), padCol = get(opt.padding, Column), padRow = get(opt.padding, Row), ncols = opt.columns || groups.length, nrows = ncols <= 0 ? 1 : Math.ceil(groups.length / ncols), n = groups.length, xOffset = Array(n), xExtent = Array(ncols), xMax = 0, yOffset = Array(n), yExtent = Array(nrows), yMax = 0, dx = Array(n), dy = Array(n), boxes = Array(n), m, i, c, r, b, g, px, py, x, y, offset;
    for(i = 0; i < ncols; ++i)xExtent[i] = 0;