When I was a kid (around 10, almost 20 years ago, ‘90s), one day my father brought a IBM 5550. It had a program, which I totally have no idea what’s the command name. You can draw a line on a plane, then it will generate a 3D image as follows.

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi7WNWi04TBThbY3p_HQa5bPGaa-ITIOoI4q5WzJJKM_lTtPTFX99vU7eFkbY0MATKi07KJ_ucN2xvMj6LWZp4_BOzXM9mVN9FBZj5iKNMFMIAP4jlxA2QnuLWcFBYmuP790ZgX19BLK5s/s800/yjlmasterpiece.png

I didn’t know English at the moment, I doubt I could even spell English correctly. I wrote a similar version using JavaScript + HTML5 Canvas, I am not sure if it’s the same result, but it should be pretty close.

1   Play it!

Only test with Chromium 6.0 and Firefox 3.6, so please don’t swear if it doesn’t work for your favorite browser.

Hold Shift key and move mouse, or simply click, click, and click.

2   Your Masterpiece

Your creativity will be placed below, so you can save them if you like. Note: the image doesn’t have background color actually.

3   Do you know it?

So, do you know the name of this command? The only things I could still remember are that computer ran MS-DOS, I think. And the monitor is a yellow monochrome CRT (That’s the reason I made the drawing yellow) It was an auction item, so the program probably was installed by the previous owner.

And do you know what you can call this kind of process?