Struct RawDistancePixel 

pub struct RawDistancePixel(/* private fields */);

A raw pixel in a 2D image

This is either a single distance value or a description of a fill; both cases are packed into an f32 (using NaN-boxing in the latter case).

The NaN-boxing is transparent to the user; for the curious, it is implemented by splitting the mantissa into three components:

• Bit 0 indicates the sign of the fill (1 for inside, 0 for outside)
• Bits 1-9 indicate the depth at which evaluation terminated, which is useful for certain debug visualizations
• Bits 10-17 are a fixed bit pattern, which both ensures that the value is treated as NaN in the [empty, depth 0] case (rather than infinity) and distinguishes from NaN values generated during normal evaluation

Implementations

impl RawDistancePixel

pub fn inside(self) -> bool

Checks whether the pixel is inside or outside the model

Distances of exactly 0.0 and non-boxed NaN values are treated as outside (i.e. returning false).

pub fn is_distance(self) -> bool

Checks whether this is a distance point sample

pub fn unpack(self) -> DistancePixel

Unpacks into a DistancePixel

Trait Implementations

impl Clone for RawDistancePixel

fn clone(&self) -> RawDistancePixel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RawDistancePixel

impl Debug for RawDistancePixel

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

Formats the value using the given formatter.

impl Default for RawDistancePixel

fn default() -> RawDistancePixel

Returns the “default value” for a type.

impl From<DistancePixel> for RawDistancePixel

fn from(p: DistancePixel) -> Self

Converts to this type from the input type.

impl From<f32> for RawDistancePixel

fn from(p: f32) -> Self

Converts to this type from the input type.