Alternative of touchesMoved in Unity3D

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    UITouch *touch = [[event allTouches] anyObject];
    CGPoint location = [touch locationInView:touch.view];
    CGPoint xLocation = CGPointMake(location.x,racquet_yellow.center.y);
    racquet_yellow.center = xLocation;
}

The above event move recquet_yellow(UIImageView) with mouse pointer, I have 3D Object in Unity3D how can I move the my object like recquet_yellow. Kindly guide me.