Struct resize::Filter

pub struct Filter { /* private fields */ }

Resampling filter.

Implementations

impl Filter

pub fn new(kernel: Box<dyn Fn(f32) -> f32>, support: f32) -> Self

Create a new filter.

Examples

use resize::Filter;
fn kernel(x: f32) -> f32 { f32::max(1.0 - x.abs(), 0.0) }
let filter = Filter::new(Box::new(kernel), 1.0);

pub fn hermite(radius: f32) -> Self

Hermite filter.

A cubic filter that produces results between Type::Triangle and [Type::Box].

pub fn lagrange(radius: f32) -> Self

Lagrange resizing.

Similar to Type::Lanczos3, but with less ringing.

pub fn box_filter(radius: f32) -> Self

Box filter.

This is a simple average operation. It’s the ideal filter when downscaling by an integer fraction (e.g. 1/2x, 1/3x, 1/4x). When used for upscaling, it will behave like Type::Point.