I wrote a program to generate a gradient between two colors using Celtic's line drawing with 565 colors.

Code:


For anyone wanting to know how to convert RGB colors into High and Low for drawing purposes, Celtic provides: RGBto565: det(59, r, g, b)
Low btye is in Ans, high bye in Theta.

Here's a blue to green:


Here's a black to red:


Here's blue to red as per the code:

Here's that same program about twice as fast:

Code:


Or alternatively:

Code:

Can someone test #FF0000 to #00FF00? I can't at the moment but it shouldn't blend with brown in the middle

I made a dynamic gradient generator that takes into account any number of randomly located, randomly colored points, and generates a full gradient between all of them.

Unfortunately, it’s obscenely slow so only bigger square sizes will actually generate in a reasonable amount of time.

Here are some example renders:



I only ever use 4 random points since that provides enough colors and doing more would take the program longer to render.

Some things to note is that M is the distance of influence, so the color of each pixel being drawn is affected by the distance from it to all other pre-generated points. If the distance is greater than M, then that point will have no effect on the current pixel. M is always calculated as the distance from one corner of the board to the other, and then multiplied by D, which by default is set to 0.5. Increasing D towards 1 will generate a smoother gradient.

I also implemented vividness, which seemed important since the true average of all points (multiplied by influence) ended up being relatively dark. A V of 4 or 5 tends to give a nice, bright image, although depending on what colors get randomly generated it could still be either dark or really bright / washed out.

Here’s the full code:

Code:

I was asked to post the code for this cycling rgb light I made, despite its relative simplicity. Enjoy!

Note that D is the step at which the color changes.

Here:
Code:

Ooh very nice! You should throw this on the first line
"CD480802C9":det(14
To disable the run indicator

Try this:

Code:

Note that PV, I% and |N are finance vars

If we fix the number of points to 3 instead of letting the user enter a value, we can simplify everything dramatically and make it about twice as fast like this:

Code: