Struct SpanInterpolatorPerspLerp 

pub struct SpanInterpolatorPerspLerp { /* private fields */ }

Linear-interpolation perspective span interpolator.

Port of C++ span_interpolator_persp_lerp<SubpixelShift>. Transforms only the endpoints and linearly interpolates coordinates between them using DDA. Faster but less accurate than the exact variant.

Implementations

impl SpanInterpolatorPerspLerp

pub fn new() -> Self

pub fn new_quad_to_quad(src: &[f64; 8], dst: &[f64; 8]) -> Self

pub fn new_rect_to_quad( x1: f64, y1: f64, x2: f64, y2: f64, quad: &[f64; 8], ) -> Self

pub fn new_quad_to_rect( quad: &[f64; 8], x1: f64, y1: f64, x2: f64, y2: f64, ) -> Self

pub fn quad_to_quad(&mut self, src: &[f64; 8], dst: &[f64; 8])

pub fn rect_to_quad( &mut self, x1: f64, y1: f64, x2: f64, y2: f64, quad: &[f64; 8], )

pub fn quad_to_rect( &mut self, quad: &[f64; 8], x1: f64, y1: f64, x2: f64, y2: f64, )

pub fn is_valid(&self) -> bool

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

pub fn transform(&self, x: &mut f64, y: &mut f64)

pub fn trans_dir(&self) -> &TransPerspective

pub fn trans_inv(&self) -> &TransPerspective

Trait Implementations

impl SpanInterpolator for SpanInterpolatorPerspLerp

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

fn next(&mut self)

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