Struct DdaLineInterpolator 

pub struct DdaLineInterpolator<const FRACTION_SHIFT: i32, const Y_SHIFT: i32 = 0> { /* private fields */ }

Fixed-point DDA line interpolator with configurable precision.

Port of C++ dda_line_interpolator<FractionShift, YShift>. Uses bit-shift arithmetic for sub-pixel precision.

Implementations

impl<const FRACTION_SHIFT: i32, const Y_SHIFT: i32> DdaLineInterpolator<FRACTION_SHIFT, Y_SHIFT>

pub fn new(y1: i32, y2: i32, count: u32) -> Self

pub fn inc(&mut self)

Step forward one unit.

pub fn dec(&mut self)

Step backward one unit.

pub fn inc_by(&mut self, n: u32)

Step forward by n units.

pub fn dec_by(&mut self, n: u32)

Step backward by n units.

pub fn y(&self) -> i32

Current Y value (shifted output).

pub fn dy(&self) -> i32

Raw accumulated delta.