Move to bin/ so more tools can be made.

src/bin/perler.rs

@@ -0,0 +1,46 @@
+use std::fs::File;
+use std::io;
+use std::io::Write;
+use std::path::PathBuf;
+
+use anyhow::Result;
+//use image::imageops::colorops::{index_colors, BiLevel};
+//use image::math::nq::NeuQuant;
+//use image::DynamicImage;
+use structopt::StructOpt;
+
+use perler::{simplify, svgify};
+
+/// Convert image to SVG in the style of perler instructions.
+#[derive(StructOpt, Debug)]
+#[structopt(name = "perler")]
+struct Opt {
+    /// Input image file.
+    input: PathBuf,
+    /// Optional output .svg file.  Default prints to stdout.
+    output: Option<PathBuf>,
+}
+
+fn main() -> Result<()> {
+    let opt = Opt::from_args();
+    let img = image::open(opt.input)?;
+    /*
+    let mut img2 = img.to_rgba();
+    let raw = img.into_rgba().into_raw();
+
+    let cmap = NeuQuant::new(1, 256, &raw);
+    index_colors(&mut img2, &cmap);
+
+    let img = DynamicImage::ImageRgba8(img2.into());
+    */
+    let img = simplify(&img);
+    let out_svg = svgify(&img)?;
+    let w: Box<dyn Write> = if let Some(path) = opt.output {
+        Box::new(File::create(path)?)
+    } else {
+        Box::new(io::stdout())
+    };
+    svg::write(w, &out_svg)?;
+
+    Ok(())
+}