Struct re_renderer::transform::RectTransform

pub struct RectTransform {
    pub region_of_interest: RectF32,
    pub region: RectF32,
}

Defines a transformation from a rectangular region of interest into a rectangular target region.

This is “pan and scan”.

Transforms the range of region_of_interest to the range of region.

Fields

region_of_interest: RectF32

The region of the scene that should be visible.

region: RectF32

The full scene.

Implementations

impl RectTransform

pub const IDENTITY: Self = _

No-op rect transform that transforms from a unit rectangle to a unit rectangle.

pub fn to_ndc_scale_and_translation(&self) -> Mat4

Computes a transformation matrix that applies the rect transform to the NDC space.

This matrix is expected to be the left most transformation in the vertex transformation chain. It causes the area described by region_of_interest to be mapped to the area described by region. Meaning, that region represents the full screen of the NDC space.

This means that only the relation of the rectangles in RectTransform is important. Scaling or moving both rectangles by the same amount does not change the result.

pub fn scale(&self) -> Vec2

Trait Implementations

impl Clone for RectTransform

fn clone(&self) -> RectTransform

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RectTransform

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

Formats the value using the given formatter.