Generating ntuples

var segments = [5, 4];
var radius = 1;

// A generic function to copy the tuple
function copy(array) {
    var newArray = [];
    for (var i = 0; i < array.length; i++) {
        newArray[i] = array[i];
    }
    return newArray;
}

// A function that computes the successor of a given tuple
function getNextTuple(lastGeneratedTuple) {
    var newTuple = copy(lastGeneratedTuple)
    for (i = segments.length - 1; i >= 0; i--) {
        // Increment the last coordinate. If it overflows,
              // continue incrementing the next coordinate, else we are done
        newTuple[i]++;
        if (newTuple[i] > segments[i] - 1) {
            newTuple[i] = 0;
        }
        else {
            break;
        }
    }
    return newTuple;
}

// A function that enumerates all possible tuples
function enumerateAllTuples() {

// The number of tuples is the product of all segments
    var numberOfTuples = 1;
    for (i = 0; i < segments.length; i++) {
        numberOfTuples *= segments[i];
    }
    var allTuples = [],
        zeroTuple = [];
    for (var i = 0; i < segments.length; i++) {
        zeroTuple[i] = 0;
    }
    allTuples[0] = zeroTuple;
    for (i = 1; i < numberOfTuples; i++) {
        allTuples[i] = getNextTuple(allTuples[i - 1]);
    }
    return allTuples;
}