Hi,
for my course project in university, I'm going to implement an evolutionary algorithm for picture-segmentation. The genotype is written in Java. I use Processing for display and evaluation. If it would work...

The genotype contains coordinates, which are transformed to a displayable curve (phenotype). The problem is situated somewhere between displaying and evaluation.

After getting one genotype from the Java-Class, it's decoded to a list of coordinates (displayable). But when it should be displayed, nothing happens. The screen still shows, what was on it before. It's necessary to display the curve in order to run the evaluation function.
So, when this function is started, the program-code runs. But not on the right set of data (which shall be the curve created before).

I'm confused, because I tried several combinations of draw(), background() etc. functions to clear the screen and get the new curve to display. Without success.

The cause of the problem is still unclear. When I should guess, it has something to do with the thread-priority of processing / Java. Maybe there is some delay time before displaying on the screen. But i don't know.

My question is, if anyone may have a hint for this problem.

Thanks in advance, Stefan