Create new .png Image in D

Question

I am trying to create a .png image that is X pixels tall and Y pixels short. I am not finding what I am looking for on dlang.org, and am struggling to find any other resources via google.

Can you please provide an example of how to create a .png image in D?

For example, BufferedImage off_Image = new BufferedImage(100, 50, BufferedImage.TYPE_INT_ARGB); from http://docs.oracle.com/javase/tutorial/2d/images/drawonimage.html is what I am looking for (I think), except in the D programming language.

Answer 1

I wrote a little lib that can do this too. Grab png.d and color.d from here:

https://github.com/adamdruppe/misc-stuff-including-D-programming-language-web-stuff

import arsd.png;

void main() {
    // width * height
    TrueColorImage image = new TrueColorImage(100, 50);

    // fill it in with a gradient
    auto colorData = image.imageData.colors; // get a ref to the color array
    foreach(y; 0 .. image.height)
        foreach(x; 0 .. image.width)
        colorData[y * image.width + x] = Color(x * 2, 0, 0); // fill in (r,g,b,a=255)
    writePng("test.png", image); // save it to a file
}

Answer 2

There is nothing in standard library for image work but you should be able to use DevIL or FreeImage to do what you want. Both of them have Derelict bindings.

• DevIL (derelict-il)
• FreeImage (derelict-fi)

Just use the C API documentation for either of them.