Mandelbrot set part 2

[Lozminda]

Following on from the Mandelbrot set post





After approx 17hrs.
I've doubled the number of iterations to see if a value is in the set or not (to 20). I've gone for a more conventional colour scheme and introduced a third "color".
There seems little point in writing the zoom part of the program, as each image takes nearly a day to draw it's just easier to enter the coordinates by hand and recompile.
I've got 80 d.p. to play with so if anyone's got a fav part of the Mbrt set they'd like me to have a crack at rendering am happy to oblige.
All going to plan, I'll post a few more images over the next few days...

[Lozminda]

Oh the folly of the inexperienced!

Let's forget that 80 dp, am currently trying to get the set between -1.19 to -1.12 & 0.22 to 0.29. Still drawing after a day, and it doesn't look anything like



Thanks to https://sciencedemos.org.uk/mandelbrot.php, from whom i whipped this image.

It's upside down, because i realised that I'm plotting my images upside down (screen co-ord's origin is different to maths x,y axis, doh) so there's a small chance it might come out looking a tiny bit like it...

It could be a bug in my code or I might have to do more iterations (although if I remember correctly 20 was enough to do a several zooms in C++). I'll keep going with the current render, but then I'm gonna call it a day. Chapter 10 calls. As previously mentioned I'll publish the NumBer class when I've finished the course and done my other NumBer project.

For now you'll have to be "entertained" with the current "failure"

[Lozminda]

Thanks to  https://sciencedemos.org.uk/mandelbrot.php, once again





As you can see there's a big difference between 250 iterations and 30 (so I was wrong about that)

Here's my attempt



Unfortunately after 3 days and five hours, it was late at night, I accidentally closed my VMEmulator window and lost the lot. As you can see I was saving every day or so, just in case of such an eventuality. My concerns about my Mandelbrot generator were as it turns out unfounded, I'd just made a mistake in thought re number of iterations.

The above image is left to right -1.19 to -1.12 and top to bottom 0.35 to 0.28. Clearly any thoughts of going to 80 d.p. though possible, I think the sun will engulf the earth before the image is rendered esp if I have to do a few thousand iterations.