Skip to main content

Art Maker Pro

On Khan Academy, a while ago, I wrote a program that would allow users to draw a picture, and then the program would generate another program which they could copy and paste and save. The new program would animate the drawing of the same picture. The program was named "Art Maker".

Recently, I created a new version of my program. The original only allowed for black and white; the new version includes color, as well as a dialog box system which I designed. The program uses only my own code - I didn't borrow anybody else's (as far as I can remember).

To embed the program on my blog, I had to use Khan Academy's script; unfortunately, their script isn't working very well here, so the program is cut off at the edge. You can access the program itself here: https://www.khanacademy.org/cs/art-maker-pro/5733417664643072

I finished the program before Christmas so I could release it for everybody to use on that day... so Merry Christmas!

To use:
* Click Generate to generate a JavaScript with Processing program in the pop-up console. You can copy the program and paste it in the New Program window on Khan Academy.
* Click Undo to undo the last stroke. Click Edit to change the palette.
* Pick a color by clicking the palette.
* Hide the top bar by clicking in the upper-right corner of the canvas; show the bar by clicking in the
* upper-left corner.
* Draw by clicking and dragging. This intentionally does work when the Generate Code dialog window is open. White doubles as an eraser.
* To get past the opening screen, either wait or click somewhere on the canvas.

Keyboard shortcuts:
* Enter: Generate code
* Z: Undo
* E: Edit Palette


Art Maker Pro

Comments

Popular posts from this blog

Gravity

Imagine the universe is filled with water. Instead of empty space, every inch of it contains pure water. No planets, no stars, only water. What happens? And what would happen if an air bubble formed? The answer to this question requires a basic understanding of gravity. Gravity is very important. It helps hold matter together, bends light, and distorts space-time (which, incidentally, is how it bends light). It also makes it possible to play football, and as Americans are big football fans, they would certainly agree that we couldn't live without it. Unfortunately, many Americans don't understand how gravity works. Admittedly, scientists haven't figured out a lot of things, but we do understand it well enough to make predictions and model physical events. One of the important things about gravity is that its strength is proportional to the inverse of the square of the distance. In other words, it gets weaker as you get farther away, based on the equation: F = c/d 2 where c ...

Too Bright, Too Dark

The visible world around us is constantly changing. One second we may have the sun in our eyes, and another we're in a dark closet trying to find the light switch. Such fluctuations in brightness could have ended up being a serious problem for our vision if it weren't for a handy built-in feature: our eyes automatically adapt to the lighting conditions of the surrounding environment. Most people are well aware that their pupils change size to handle lighting conditions. A larger pupil admits more light and makes the scene brighter, while a smaller pupil admits less light and makes the scene dimmer. This mechanism is fast and effective, and is controlled by the brain stem, which acts autonomously - you don't even have to think about it. As useful as this type of adaptation may be, it has some limitations. For example, most artificial lighting is 20 times dimmer than the sun, while pupil dilation only brightens light by a factor of 4 (when compared with a fully constricted pu...

Dividing Paper Puzzle

When I was young, I would fold a sheet of letter paper in half, for origami projects. It occurred to me that the two halves looked almost the same as the whole sheet of paper - except they were smaller. I could see they weren't exactly the same shape; they were off by a little bit. But the idea stuck in my head. You can use a pen, instead of scissors, to halve the paper. Those rectangles all have the same shape, but are different sizes. One night when I was 12, I thought about my idea. I wondered if it was possible to have a sheet of paper that could be cut in half, resulting in 2 smaller versions of the same paper. That would be neat, to be able to cut a paper in half and get 2 papers that had the same exact shape. If that were possible, then you could cut  those  papers, too; and the resulting papers would have the same shape as all the other papers. You could keep cutting in half forever, and each paper, no matter how small, would have the same shape as all the ot...