Struct arcball::ArcballCamera

pub struct ArcballCamera<F> { /* private fields */ }

The Shoemake Arcball camera.

Implementations

impl<F: BaseFloat> ArcballCamera<F>

pub fn new(
    look_at: &Matrix4<F>,
    motion_speed: F,
    zoom_speed: F,
    screen: [F; 2]
) -> ArcballCamera<F>

Create a new Arcball camera starting from the look at matrix look_at. The motion_speed sets the speed for panning and zoom_speed the speed for zooming the camera. screen should be [screen_width, screen_height].

pub fn get_mat4(&self) -> Matrix4<F>

Get the view matrix computed by the camera.

pub fn rotate(&mut self, mouse_prev: Vector2<F>, mouse_cur: Vector2<F>)

Rotate the camera, mouse positions should be in pixel coordinates.

Rotates from the orientation at the previous mouse position specified by mouse_prev to the orientation at the current mouse position, mouse_cur.

pub fn zoom(&mut self, amount: F, elapsed: F)

Zoom the camera in by some amount. Positive values zoom in, negative zoom out.

pub fn pan(&mut self, mouse_delta: Vector2<F>, elapsed: F)

Pan the camera following the motion of the mouse. The mouse delta should be in pixels.

pub fn update_screen(&mut self, width: F, height: F)

Update the screen dimensions, e.g. if the window has resized.