use cgmath::{Matrix4, Vector4};
use cgmath::conv::array4x4;
use cgmath::{Matrix4, Vector4};
use cgmath::conv::array4x4;
let (x, y) = (x as i32, y as i32);
if self.mouse_x == -1 {
// Set initial absolute position.
let (x, y) = (x as i32, y as i32);
if self.mouse_x == -1 {
// Set initial absolute position.