Struct amethyst_controls::ArcBallMovementSystem

pub struct ArcBallMovementSystem;

The system that manages the arc ball movement; In essence, the system will allign the camera with its target while keeping the distance to it and while keeping the orientation of the camera. To modify the orientation of the camera in accordance with the mouse input, please use the FreeRotationSystem.

Trait Implementations

impl<'a> System<'a> for ArcBallMovementSystem

type SystemData = (WriteStorage<'a, Transform>, ReadStorage<'a, ArcBallControlTag>)

The resource bundle required to execute this system.

fn run(&mut self, (transforms, tags): Self::SystemData)

Executes the system with the required system data.

fn running_time(&self) -> RunningTime

Returns a hint how long the system needs for running. This is used to optimize the way they're executed (might allow more parallelization).

fn accessor(&'b self) -> AccessorCow<'a, 'b, Self>

Return the accessor from the [SystemData].

fn setup(&mut self, res: &mut Resources)

Sets up the Resources using Self::SystemData::setup.