The Mandelbrot set, coloured by how fast each point escapes. The centre of the view is iterated once in double precision; every pixel then follows only its small difference from that reference orbit in single precision on the GPU, rebasing to the start of the orbit whenever the difference outgrows the orbit itself. That keeps detail down to a view width of about 1e-13, where the doubles of the centre run out.
Mouse and touch
- wheel · pinch
- zoom about the pointer
- drag
- pan
- double-click · double-tap
- zoom in ×3 about that point
- click · tap
- draw the first 200 steps of that point's orbit, also on a small map of the whole set
Keys
- arrows
- pan
- + − (= _)
- zoom about the centre
- [ ]
- fewer or more iterations (freezes them until reset)
- P
- next palette: Nacht, Ember, Frost, Ink
- J
- Julia set for c = the current centre, and back
- N
- fly to the next of eight places
- R
- reset to the whole set
- S
- copy a link to this exact view
- H ?
- this help · Esc closes it
The address always holds the current view; ?seed= picks the starting place and palette.