i need to make a simple color picker of a fixed size. My thought is to have an image of the swatch in a pictslider, and I can use xy data to create rgb values. The question is - how do i map the coordinates into RGB? What's the function?
No need for a function. Use the oft-overlooked "sucka" object in the palette (looks like a needle). Can send RGB of whatever you click on, or arbitrary screen coordinates. So you can have a nice big swatch looking any way you want, or a wheel, etc. as a picture, and just put the sucka rectangle on it.
Also nice for picking colors out of images or movies.