Border between two colours

[paulstgeorge]

That’s good, but it boils down to this:

@scudly

find its nearest neighbor color in the palette

And that is my question. How do you find the nearest colour? I thought of using approximate equality but often the Red value of a colour will send you one way and the Blue value the other way…

Approximate equality for Rosetta

I noticed that Processing is missing from https://rosettacode.org/wiki/Approximate_equality. Sure this can be improved, but here is a start… I have used ‘big’ not in a vain attempt to avoid floating point errors, but to give expected results. int big = 1000000000; void setup() { noLoop(); } void draw() { isClose(1.2, 1.1, 0.10000001); // first number, second number, how close is close } void isClose(float num1, float num2, float prox) { int intnum1 = int(num1*big); int intnum2 …