check if pixel is null in rust

Step_ Forward answered on May 25, 2023 Popularity 1/10 Helpfulness 8/10

answer check if pixel is null in rust

check if pixel is null in rust

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//import image crate
use image::*;

pub fn init(path: &str) -> (Vec<i32>, Vec<i32>){
    //get the image
    let img = image::open(path).expect("File not found!");

    //null x and y coordinates
    let (mut non_null_x, mut non_null_y): (Vec<i32>, Vec<i32>) = (Vec::new(), Vec::new());

    //check for null pixels
    for pix in img.pixels() {
    	//I don't really get this line still it just works and that's awesome!
        let check_null = i32::from_be_bytes(<[u8; 4]>::try_from(pix.2.channels()).expect("Why tho?!"));
        //if check_null == 0 then the pixel is null(empty)
        if check_null != 0{
            //push the x and y values
            non_null_x.push(pix.0.try_into().unwrap());
            non_null_y.push(pix.1.try_into().unwrap());
        }
    }

    //returns the postion of not null pixels in type: (Vec<i32>, Vec<i32>)
    return (non_null_x, non_null_y);
}

Popularity 1/10 Helpfulness 8/10 Language rust

Source: Grepper

Tags: null pixel rust

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Contributed on May 25 2023

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