32     float x;  member
36         return x * x + y * y;  in lengthSquared()
40         return sqrt(x * x + y * y);  in length()
44         x += v.x;
49         x -= v.x;
54         x += v;
59         x -= v;
64         x /= s;
69         x *= 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};
91         x *= s;  in normalize()
96         Vector2 v = {x, y};  in copyNormalized()
102         return x * v.x + y * v.y;  in dot()
106         return x * v.y - y * v.x;  in cross()
110         ALOGD("Vector2[%.2f, %.2f]", x, y);  in dump()
117     float x;
122         return (Vector3){x + v.x, y + v.y, z + v.z};
126         return (Vector3){x - v.x, y - v.y, z - v.z};
130         return (Vector3){x / s, y / s, z / s};
134         return (Vector3){x * s, y * s, z * s};
139         ALOGD("%s[%.2f, %.2f, %.2f]", label, x, y, z);