Struct SpanInterpolatorLinearSubdiv 

pub struct SpanInterpolatorLinearSubdiv<T = TransAffine> { /* private fields */ }

Linear span interpolator with subdivision.

Periodically re-transforms coordinates to reduce error accumulation for non-linear transforms used as linear approximations.

Port of C++ span_interpolator_linear_subdiv<Transformer, SubpixelShift>.

Implementations

impl<T: Transformer> SpanInterpolatorLinearSubdiv<T>

pub fn new(trans: T, subdiv_shift: u32) -> Self

pub fn new_default(trans: T) -> Self

pub fn transformer(&self) -> &T

pub fn set_transformer(&mut self, trans: T)

pub fn subdiv_shift(&self) -> u32

pub fn set_subdiv_shift(&mut self, shift: u32)

pub fn begin(&mut self, x: f64, y: f64, len: u32)

Initialize interpolation for a span starting at (x, y) with len pixels.

pub fn next(&mut self)

Advance to the next pixel.

pub fn coordinates(&self, x: &mut i32, y: &mut i32)

Get the current transformed coordinates (in subpixel units).

Trait Implementations

impl<T: Transformer> SpanInterpolator for SpanInterpolatorLinearSubdiv<T>

fn begin(&mut self, x: f64, y: f64, len: u32)

fn next(&mut self)

fn coordinates(&self, x: &mut i32, y: &mut i32)