29     float y;  member
32         x(0.0f), y(0.0f) {  in Vector2()
36         x(px), y(py) {  in Vector2()
40         return sqrt(x * x + y * y);  in length()
45         y += v.y;
50         y -= v.y;
55         y += v;
60         y -= v;
65         y /= s;
70         y *= s;
74         return Vector2(x + v.x, y + v.y);
78         return Vector2(x - v.x, y - v.y);
82         return Vector2(x / s, y / s);
86         return Vector2(x * s, y * s);
92         y *= s;  in normalize()
96         Vector2 v(x, y);  in copyNormalized()
102         return x * v.x + y * v.y;  in dot()
106         ALOGD("Vector2[%.2f, %.2f]", x, y);  in dump()