Struct trackball::Scene[][src]

pub struct Scene<N: RealField> { /* fields omitted */ }

Scene wrt enclosing viewing frustum.

Implements Default and can be created with Scene::default().

Implementations

impl<N: RealField> Scene<N>[src]

pub fn fov(&self) -> Fixed<N>[src]

Fixed quantity wrt field of view, see Self::set_fov().

pub fn set_fov(&mut self, fov: impl Into<Fixed<N>>)[src]

Sets fixed quantity wrt field of view.

Default is fixed vertical field of view of π/4.

use nalgebra::Point2;
use trackball::Scene;

// Default screen size.
let max = Point2::new(800, 600);
// Default scene with fixed vertical field of view of π/4:
//
//   * Increasing width increases horizontal field of view (more can be seen).
//   * Increasing height scales scene zooming in as vertical field of view is fixed.
let mut scene = Scene::default();
// Unfix vertical field of view by fixing current unit per pixel on focus plane at distance
// from eye of one, that is effectively `upp` divided by `zat` to make it scale-independant:
//
//   * Increasing width increases horizontal field of view (more can be seen).
//   * Increasing height increases vertical field of view (more can be seen).
scene.set_fov(scene.fov().to_upp(&max.cast::<f32>()));

pub fn clip_planes(&self, zat: N) -> (N, N)[src]

Clip plane distances from eye regardless of Self::scale() wrt to distance between eye and target.

Default is (1e-1, 1e+6) measured from eye.

pub fn set_clip_planes(&mut self, znear: N, zfar: N)[src]

Sets clip plane distances from target or eye whether Self::scale().

Default is (1e-1, 1e+6) measured from eye.

pub fn scale(&self) -> bool[src]

Object inspection mode.

Scales clip plane distances by measuring from target instead of eye. Default is false.

pub fn set_scale(&mut self, oim: bool)[src]

Sets object inspection mode.

Scales clip plane distances by measuring from target instead of eye. Default is false.

pub fn ortho(&self) -> bool[src]

Orthographic projection mode.

Computes scale-identical orthographic instead of perspective projection. Default is false.

pub fn set_ortho(&mut self, opm: bool)[src]

Sets orthographic projection mode.

Computes scale-identical orthographic instead of perspective projection. Default is false.

pub fn projection_and_upp(&self, zat: N, max: &Point2<N>) -> (Matrix4<N>, N)[src]

Projection transformation and unit per pixel on focus plane wrt distance between eye and target and maximum position in screen space.

Trait Implementations

impl<N: Clone + RealField> Clone for Scene<N>[src]

impl<N: Debug + RealField> Debug for Scene<N>[src]

impl<N: RealField> Default for Scene<N>[src]

impl<N: Eq + RealField> Eq for Scene<N>[src]

impl<N: PartialEq + RealField> PartialEq<Scene<N>> for Scene<N>[src]

impl<N: RealField> StructuralEq for Scene<N>[src]

impl<N: RealField> StructuralPartialEq for Scene<N>[src]

Auto Trait Implementations

impl<N> RefUnwindSafe for Scene<N> where
    N: RefUnwindSafe

impl<N> Send for Scene<N>

impl<N> Sync for Scene<N>

impl<N> Unpin for Scene<N> where
    N: Unpin

impl<N> UnwindSafe for Scene<N> where
    N: UnwindSafe

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
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impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T> Same<T> for T

type Output = T

Should always be Self

impl<SS, SP> SupersetOf<SS> for SP where
    SS: SubsetOf<SP>, 

impl<T> ToOwned for T where
    T: Clone
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type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.