----- Original Message ----- From: "Jonathan Osuch" <osuchj@avalon.net> To: "Fractint and General Fractals Discussion" <fractint@mailman.xmission.com> Sent: Wednesday, May 28, 2003 3:34 AM Subject: Re: [Fractint] Multifractal On Tuesday 27 May 2003 01:23 pm, Albrecht Niekamp wrote:
And the problem with that would be that the value in z is used for all the coloring options and periodicity checking (I know, you turn off periodicity checking).
Yes, and that must be so as the following routines check when the next switch to another frm is due and to set the "z" and "c" values for the next iteration round if so. These must not be used for coloring. Please check todays posting, I think I have found what caused that bug.
If z is set for the next iteration before the bailout test is reached, then the coloring will be incorrect. You need to change your formula so that z and c are set before the iteration starts, and not after it is over. Once the bailout test is reached, and exits, what ever value left in z is used to determine most of the inside and outside coloring options. I have tested e v e r y possible combination, even put the iterations physically behind the switching routines if it´s that what you mean, but the bug always was there, only at different pixels. The bailout expression has nothing to do with it, and it works perfectly with multifractal_1, where the bug is no problem after numerous tests.I really hope, you can track it down.It must be a matter of the inputs, I think. Al.