use plotters::prelude::*;
fn main() -> Result<(), Box<dyn std::error::Error>> {
let mut backend = BitMapBackend::new("examples/outputs/1.png", (300,200));
backend.open()?;
backend.draw_rect((50,50), (200, 150), &RGBColor(255,0,0), true)?;
backend.close()?;
return Ok(());
}