Cheat Engine

Evil_Intentions · Posted: Thu Jun 16, 2011 7:42 pm Post subject: Problem with Graphics2D

I'm making a fractal drawing program using Java. The fractals can have variable angles at each turn. If I keep the angle at 90, everything is fine. If I use ANY other angle amount, a whole slew of problems arise. I'm drawing to a panel which is within a scrollPane. The panel automatically resizes to the fractal after creating bounds, and the scrollPane allows you to look over the entire fractal. If The angle is kept at 90, I can scroll across perfectly fine. If the angle is anything else, scrolling across will delete that part of the fractal. The fractal may also be drawn in different locations, or not at all.

I don't think it's a problem with my math, as I'm multiplying the angle by degrees per radian to get my direction before drawing, so whatever happens to an angle of say 110 also happens to the 90 degree angle.

I've basically been ripping my brains out for the past 2 hours. If this isn't a common or obvious problem, I'll gladly post code.

Thanks guys.

EDIT: I just tried a quick test with the angle set to 60, the fractal would draw and very quickly be erased every single time. Setting the angle to 89 would cause the boundaries to be off, and scrolling over it causes it to disappear at that part.

Cryoma · Posted: Thu Jun 16, 2011 9:26 pm Post subject:

So 45 and 180 do what?
I'm good with math but I have no idea what you're doing here really, are their any formulas?

Evil_Intentions · Posted: Thu Jun 16, 2011 9:37 pm Post subject:

Slugsnack · Posted: Fri Jun 17, 2011 3:57 am Post subject:

i suggest if you want someone to test this for you you get it down to the simplest case. ie. make a project that only reproduces this behaviour and nothing else and someone like me will likely look into it when they have time

b6oy · Newbie cheater Reputation: 0 Joined: 21 Sep 2009 Posts: 10

did you use repaint() ?

Evil_Intentions · Posted: Fri Jun 17, 2011 4:30 pm Post subject:

Slugsnack · Posted: Fri Jun 17, 2011 4:56 pm Post subject:

this is a fundamental concept in fixing bugs. attempt to isolate just the code which could be affecting it. often it's something dumb and you can see it clearly if you do this. in the other cases at least you have a clear example to show people who will have the ability to fix it