Method new

generative/attractor.rs:41–74

(
        format: OutputFormat,
        output: Option<PathBuf>,
        expected_coords: usize,
        width: Option<u32>,
        height: Option<u32>,
    )

// public
impl AttractorFormatter {
    pub fn new(
        format: OutputFormat,
        output: Option<PathBuf>,
        expected_coords: usize,
        width: Option<u32>,
        height: Option<u32>,
    ) -> eyre::Result<Self> {
        let writer: Box<dyn Write> = match &output {
            Some(path) => {
                if path == Path::new("-") {
                    Box::new(std::io::stdout())
                } else {
                    let file = std::fs::File::create(path)?;
                    Box::new(file)
                }
            }
            None => Box::new(std::io::stdout()),
        };
        let writer = BufWriter::new(writer);
        let buffer_capacity = match format {
            OutputFormat::Points | OutputFormat::Line => 1024,
            OutputFormat::Image => expected_coords,
        };
        let accumulated = Vec::with_capacity(buffer_capacity);

        Ok(Self {
            format,
            writer,
            output,
            accumulated,
            width,
            height,
        })
    }

    pub fn handle_point(&mut self, x: f64, y: f64) -> eyre::Result<()> {
        self.accumulate_coord(Coord { x, y })