Struct RowOps 

pub struct RowOps<'a> { /* private fields */ }

A list of row-local opcodes prepared for one window geometry, applied a row at a time (e.g. by a streaming pipeline that produces the rows band by band). For every row this gives exactly what apply gives on the whole window.

Implementations

impl<'a> RowOps<'a>

pub fn new( ops: &'a [Opcode], width: usize, planes: usize, x0: usize, full_width: usize, full_height: usize, value_scale: f32, ) -> Option<Self>

Prepare ops for windows width pixels wide of planes samples per pixel, whose first column is column x0 of a full_width x full_height image (value_scale as for apply). None when a pixel opcode is not row-local (Opcode::is_row_local); geometric and unknown opcodes are left out, as by apply.

pub fn is_empty(&self) -> bool

Whether no opcode changes anything.

pub fn apply(&self, y: usize, row: &mut [f32])

Apply the opcodes, in order, to window row y (whole-image coordinates; row: width * planes samples).