Struct View 

pub struct View {
    pub center: [f64; 2],
    pub scale: f64,
    pub width: f64,
    pub height: f64,
    pub dpr: f64,
}

Camera state. Not part of the document; hosts may persist it as view state.

Fields

center: [f64; 2]

World point at the center of the target.

scale: f64

CSS pixels per model unit.

width: f64

Target width in CSS pixels.

height: f64

Target height in CSS pixels.

dpr: f64

Device pixels per CSS pixel.

Implementations

impl View

pub fn validate(&self) -> Result<(), RenderError>

Validate finite, positive values.

Errors

RenderError::InvalidView for NaN/∞, non-positive sizes or out-of-range zoom.

pub fn device_size(&self) -> (u32, u32)

Target size in device pixels (rounded, at least 1×1).

pub fn device_scale(&self) -> f64

Device pixels per model unit.

pub fn world_to_device(&self, p: Point) -> [f64; 2]

World → device pixels.

pub fn world_to_css(&self, p: Point) -> [f64; 2]

World → CSS pixels.

pub fn css_to_world(&self, x: f64, y: f64) -> Point

CSS pixels (relative to the target’s top-left corner) → world.

pub fn visible(&self) -> Aabb

Visible world rectangle.

pub fn zoomed_at(&self, x: f64, y: f64, factor: f64) -> Self

Zoom by factor keeping the world point under CSS position (x, y) fixed.

pub fn fit(&self, b: Aabb, margin: f64) -> Self

Fit a world box with margin CSS pixels on each side.

pub fn lod(&self) -> i32

Flatten tolerance for the current zoom, bucketed by powers of two so cached tessellations stay valid while zooming within a bucket.

Trait Implementations

impl Clone for View

fn clone(&self) -> View

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for View

impl Debug for View

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

Formats the value using the given formatter.

impl Default for View

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for View

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for View

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for View

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for View