Struct arcball::ArcballCamera

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

The Shoemake Arcball camera.

Implementations

impl<F: BaseFloat> ArcballCamera<F>

pub fn new(
    center: Vector3<F>,
    zoom_speed: F,
    screen: [F; 2]
) -> ArcballCamera<F>

Create a new Arcball camera focused at the center point, which will zoom at zoom_speed screen should be [screen_width, screen_height].

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

Get the view matrix computed by the camera.

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

Get the inverse view matrix

pub fn eye_pos(&self) -> Vector3<F>

Get the camera eye position

pub fn eye_dir(&self) -> Vector3<F>

Get the camera view direction

pub fn up_dir(&self) -> Vector3<F>

Get the camera view direction

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>)

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.