Struct FrameGeom 

pub struct FrameGeom {
    pub fit: (f32, f32, f32),
    pub look: [f32; 2],
    pub density: f32,
    pub viewport_px: [f32; 2],
    pub roll: f32,
    pub pivot: [f32; 2],
}

One painted frame’s geometry, shared between viewports (writers) and world-anchored siblings such as ActorFrame (readers). Maps either direction so board sprites, picks, and actor surfaces track together, including under camera shake.

Timing: layout publishes ahead of prepare and paint re-publishes; composition-time readers see the previous frame’s geometry, so placement trails the board by one frame under camera motion. Event-time readers (picks) see the latest publish.

Fields

fit: (f32, f32, f32)

Effective dp fit of the world extent: (scale, off_x, off_y) from effective_fit (contain-fit scaled by zoom/units_per_pixel).

look: [f32; 2]

Look-point shift in world units: cam.effective_center() - world / 2. Zero when the camera is default.

density: f32

Physical px per dp at paint time.

viewport_px: [f32; 2]

Painted viewport size in physical px (drives the GPU camera).

roll: f32

Camera roll in radians around the look point.

pivot: [f32; 2]

Camera look point in world coords at publish time. Roll pivot for surface_dp and picks.

Trait Implementations

impl Clone for FrameGeom

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FrameGeom

impl Debug for FrameGeom

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

Formats the value using the given formatter.

impl Default for FrameGeom

fn default() -> Self

Returns the “default value” for a type.

impl From<FrameGeom> for GeomHandle

fn from(g: FrameGeom) -> Self

Converts to this type from the input type.