Struct LanczosResampler 

pub struct LanczosResampler { /* private fields */ }

Lanczos resampler with configurable lobe count

Implementations

impl LanczosResampler

pub const fn new(lobes: usize) -> Self

Creates a new Lanczos resampler with specified lobe count

Arguments

• lobes - Number of lobes (2 = faster, 3 = higher quality)

Common values:

• 2: Lanczos2 - faster, still good quality
• 3: Lanczos3 - standard, excellent quality (default)

pub const fn lobes(&self) -> usize

Returns the lobe count

pub const fn radius(&self) -> usize

Returns the kernel radius (same as lobe count)

pub fn resample( &self, src: &RasterBuffer, dst_width: u64, dst_height: u64, ) -> Result<RasterBuffer>

Resamples a raster buffer using Lanczos interpolation

Out-of-range source samples needed by the kernel window at the image border are handled via EdgeMode::Clamp. Use LanczosResampler::resample_with_edge_mode to select a different edge-handling strategy.

Errors

Returns an error if dimensions are invalid

pub fn resample_with_edge_mode( &self, src: &RasterBuffer, dst_width: u64, dst_height: u64, edge_mode: EdgeMode, ) -> Result<RasterBuffer>

Resamples with edge handling

This variant allows specifying how to handle source samples that the kernel window would otherwise read from outside [0, width) x [0, height) near the image border.

Arguments

• src - Source buffer
• dst_width - Destination width
• dst_height - Destination height
• edge_mode - How to handle edge pixels

Errors

Returns an error if parameters are invalid

pub fn resample_separable( &self, src: &RasterBuffer, dst_width: u64, dst_height: u64, ) -> Result<RasterBuffer>

Separable Lanczos resampling (optimized 2-pass)

This performs resampling in two passes (horizontal then vertical) which is more cache-friendly and can be faster for large kernels.

Errors

Returns an error if parameters are invalid

Trait Implementations

impl Clone for LanczosResampler

fn clone(&self) -> LanczosResampler

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for LanczosResampler

impl Debug for LanczosResampler

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

Formats the value using the given formatter.

impl Default for LanczosResampler

fn default() -> Self

Returns the “default value” for a type.