DevPNG

devpng Documentation License: MIT

Note

For the moment, this crate is in construction.

If you need something, you can tell me:

If you encounter some issues, tell me.

Examples

Want to modify an image ?

```Rust use devpng::prelude::PNG;

fn main() -> Result<(), String> { // Load. let mut buf = std::fs::read("img.png") .expect("Couldn't read the file."); let mut png = PNG::load(&mut buf)?; // Access image. let img = png.image(); // Modify image. for x in img.iter_mut() { x = !x; } // Store. png.store("img.png")?; Ok(()) } ```

Want to create an image ?

```Rust use devpng::prelude::{ColourType, Image, PNG, Point};

fn main() -> Result<(), String> { let mut data = vec![255; 800 * 200]; let img = Image::new(&mut data[..]) .setncol(800) // 200 .setnrow(200) .setdepth(8) .setcolour(ColourType::RGBA); let mut buf = Vec::new();

let mut png = PNG::from_image(&mut buf, &img);
let mut img = png.image();

for i in 0..50 {
    let center = Point { x: 100, y: 100 };
    let radius = 80 - i as i32;
    let colour = &[0, (255 - i * 5) as u8, (255 - i * 5) as u8, 255];
    img.plot_circle(center, radius, colour);
}

// Store.
png.store("img.png")?;
Ok(())

} ```

alt text

Want low level access ?

```Rust use devpng::prelude::DataStreamMut;

fn main() -> Result<(), String> { // Load. let mut buf = std::fs::read("img.png") .expect("Couldn't read the file."); let mut datastream = DataStreamMut::from(&mut buf)?; // Access image. let mut cache = datastream.idat()?; let img = cache.image();

// Modify image.
for x in img.iter_mut() {
    *x = !*x;
}
// Store.
let png = datastream.rebuild(&mut Some(&mut cache));
std::fs::write("img.png", png)
    .expect("Couldn't write the file.");
Ok(())

} ```

Images

alt text alt text alt text alt text alt text alt text

Documentation

See RustDoc Documentation.

Installation

Add following lines to your Cargo.toml:

toml [dependencies] devpng = "0"

References