Enum ViewProjection 

#[non_exhaustive]
pub enum ViewProjection {
    Orthographic,
    Perspective,
}

How a view maps model points to the image.

Orthographic is the default. The in-tree hidden-line providers draw both projections; the visible-face providers draw only the orthographic one. A provider says which it draws with supports_projection on MeshHiddenLines and crate::MeshVisibleFaces (ADR 0107), and a registry never hands it a view it does not support.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Orthographic

Parallel projection along the frame’s -z axis.

Perspective

Central projection from the eye at the frame’s origin onto the plane W = -1: the image of a point with view coordinates (U, V, W) and W < 0 is (U / -W, V / -W). The view requires near < 0, so every kept point is strictly in front of the eye.

Trait Implementations

impl Clone for ViewProjection

fn clone(&self) -> ViewProjection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ViewProjection

impl Debug for ViewProjection

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

Formats the value using the given formatter.

impl Default for ViewProjection

fn default() -> ViewProjection

Returns the “default value” for a type.

impl Eq for ViewProjection

impl PartialEq for ViewProjection

fn eq(&self, other: &ViewProjection) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ViewProjection