Struct Orbit 

pub struct Orbit {
    pub target: Point3<World>,
    pub dir: SphericalVec<World>,
}

Orbiting camera transform.

Keeps the camera centered on a world-space point, and allows free 360°/180° azimuth/altitude rotation around that point as well as setting the distance from the point.

Fields

target: Point3<World>

The camera’s target point in world space.

dir: SphericalVec<World>

The camera’s direction in world space.

Implementations

impl Orbit

pub fn rotate(&mut self, az_delta: Angle, alt_delta: Angle)

Adds the azimuth and altitude to the camera’s current direction.

Wraps the resulting azimuth to [-180°, 180°) and clamps the altitude to [-90°, 90°].

pub fn rotate_to(&mut self, az: Angle, alt: Angle)

Rotates the camera to the world-space azimuth and altitude given.

Wraps the azimuth to [-180°, 180°) and clamps the altitude to [-90°, 90°].

pub fn translate(&mut self, delta: Vec3<World>)

Translates the camera’s target point in world space.

pub fn zoom(&mut self, factor: f32)

Moves the camera towards or away from the target.

Multiplies the current camera distance by factor. The distance is clamped to zero. Note that if the distance becomes zero, you cannot use this method to make it nonzero again!

To set an absolute zoom distance, use zoom_to.

Panics

If factor < 0.

pub fn zoom_to(&mut self, r: f32)

Moves the camera to the given distance from the target.

Panics

If r < 0.

Trait Implementations

impl Clone for Orbit

fn clone(&self) -> Orbit

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Orbit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Orbit

Available on crate feature fp only.

fn default() -> Self

Returns the “default value” for a type.

impl Transform for Orbit

Available on crate feature fp only.

fn world_to_view(&self) -> Mat4x4<WorldToView>

Returns the current world-to-view matrix.

impl Copy for Orbit