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use std::fs::File;
use std::io::Write;
use crate::global::{DisplayBuffer, IMG_HEIGHT, IMG_WIDTH};
pub struct View<'a> {
pub display_buffer: &'a DisplayBuffer,
pub viewer: fn(&DisplayBuffer) -> Result<String, std::io::Error>,
}
impl<'a> View<'a> {
pub fn display(&self) {
let result = (self.viewer)(self.display_buffer);
match result {
Ok(success_msg) => {
println!("{}", success_msg);
},
Err(error_msg) => {
eprintln!("{}", error_msg);
}
}
}
}
pub mod render_viewer {
use super::*;
pub fn ppm_exporter(data: &DisplayBuffer) -> Result<String, std::io::Error> {
let file_name = "output.ppm";
let mut file = File::create(file_name)?;
// header
let mut txt_data = String::from("P3\n");
txt_data.push_str(format!("{} {}\n255\n", IMG_WIDTH, IMG_HEIGHT).as_str());
// data point
data.iter().for_each(|row| {
row.iter().for_each(|&pixel| {
txt_data.push_str(&format!("{} {} {}\n", pixel.r, pixel.g, pixel.b));
})
});
file.write_all(txt_data.as_bytes())?;
Ok(format!("Output rendered to file {}", file_name))
}
}
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