Function _centerEdgeToPoint

docs/app/js/sanddance-app.js:31930–31935

* Moves the middle point on an edge to the point given. * Only moves in one direction. For instance if a bottom edge is passed in, then * the bottom edge will be moved in the x axis to match the point.

(rect, edge, point)

 * Only moves in one direction. For instance if a bottom edge is passed in, then
 * the bottom edge will be moved in the x axis to match the point.
 */ function _centerEdgeToPoint(rect, edge, point) {
    var positiveEdge = _getFlankingEdges(edge).positiveEdge;
    var elementMiddle = _getCenterValue(rect, edge);
    var distanceToMiddle = elementMiddle - _getEdgeValue(rect, positiveEdge);
    return _moveEdge(rect, positiveEdge, point - distanceToMiddle);
}
/**
 * Moves the element rectangle to be appropriately positioned relative to a given target.
 * Does not flip or adjust the element.