calculate a line of points between two vectors

line(v1, v1)

static public ArrayList<Vector2> line(Vector2 v1, Vector2 v2) {

    int x = (int) v1.x;
    int y = (int) v1.y;
    int x2 = (int) v2.x;
    int y2 = (int) v2.y;
    ArrayList<Vector2> result = new ArrayList<Vector2>();

    int w = x2 - x ;
    int h = y2 - y ;
    int dx1 = 0, dy1 = 0, dx2 = 0, dy2 = 0 ;
    if (w<0) dx1 = -1 ; else if (w>0) dx1 = 1 ;
    if (h<0) dy1 = -1 ; else if (h>0) dy1 = 1 ;
    if (w<0) dx2 = -1 ; else if (w>0) dx2 = 1 ;
    int longest = Math.abs(w) ;
    int shortest = Math.abs(h) ;
    if (!(longest>shortest)) {
        longest = Math.abs(h) ;
        shortest = Math.abs(w) ;
        if (h<0) dy2 = -1 ; else if (h>0) dy2 = 1 ;
        dx2 = 0 ;
    }
    int numerator = longest >> 1 ;
    for (int i=0;i<=longest;i++) {
        result.add(new Vector2(x, y));
        numerator += shortest ;
        if (!(numerator<longest)) {
            numerator -= longest ;
            x += dx1 ;
            y += dy1 ;
        } else {
            x += dx2 ;
            y += dy2 ;
        }
    }
    return result;
}