And I agree, when zooming near the edge of the main Mandelbrot or a mini, the detail needs to be defined. This is less critical IMO at the end of a zoom sequence when all detail turns into ugly gray bands.
The color cycling on this zoom movie is interesting. Starting with a seed value of -.75+.001i, deeper in the ravine of the Seahorse valley than most will venture to go, the iteration depth at this point is Pi/2 * 1000 or about 1570. By zooming into the tip of the nearby bulb, any semblance of spirals is lost and the blobs show up as concentric onion like circles with a sharp increase of exactly 1571 iterations between each layer. Moving into the tip of the blobs creates smaller blobs. I zoom some distance into the tip before selecting the centroid of one of the blobs. Period goes from 2, to 4, to 8, and so on until a Minibrot is visible at the center. The cascading chains form columns of about 23 bulbs between each of the onion-like layers. I then zoom into the Elephant valley of this minibrot to form the complex Julia formations which will be further manipulated.
The onion layers are everpresent throughout the entire zoom sequence with precisely 1571 iterations difference between each layer. This causes iteration bands to behave in unexpected ways. Setting the iterations to a multiple of this value create patterns where each layer offers repeated color patterns. Setting the iterations to 1571 or to a factor of this value result in each band having the same appearance. Factors with higher numerators result in higher contrast with every band. Initially I set hue value in the infinite waves pallet to be exactly 1571. In practice, the result of this perfect match is that the color of the layers remains mostly unchanged, resulting in a boring zoom movie. By setting the value to a near miss, 1570, the colors pop out and can be seen to change slowly, creating vibrant contrasting colors when dense spirals are approached. The farther away from 1571 the value, the faster it appears to change in the zoom movie. Furthermore cycling the offset of the waves during playback results in a different rate of change for the colors overall, compared to straight zooming. As a result of this, the coloring of the entire image morphs simultaneously, rather than color cycling which appears to zoom in or out.
To preserve uniform texture throughout, saturation and luminosity are adjusted to be near miss factors of 1571. The more deviation a multiple of the saturation or luminosity has above or below this value, the more rapidly the values appear to change as the zoom movie progresses. For the initial zoom sequence, I had saturation set to a near miss of 1/3 and luminosity set to a near miss of 1/10.
actual period of layers: 1571
H=1570
S=523 (523*3=1569)
B=158 (158*10=1580)
Unfortunately, there is apparently not enough drift of the saturation value in the current zoom frames, and too much drift of the brightness. With a frame rate of 60Hz and 60 movie frames per zoom level, and incrementing the offset one iteration per movie frame, the cycling of brightness is too frequent, resulting in a pulsar effect where the entire frame goes light-dark-light-dark. I plan on changing the saturation to 522 (522*3=1566) so it doesn't align as well with hue, difference of 4 instead of 1, resulting in greater variety of colors. I plan on changing the brightness from 158 up to 315 (315*5=1575), resulting in a lower offset compared to H=1570 and exact periodicity of 1571. This should cut down on the strobing effect of light-dark-light-dark but may also decrease overall contrast in the columns. If contrast turns out to be too low, I can fix this by incrementing the 315 value to 316 or 317.
Sorry for the long explanation.
TL:DR - I have put a lot of thought into the color cycling of this zoom movie, and color patterns created by micro adjustments of the offset will produce color variation completely independent of the changes presented in a static zoom sequence. In layman's terms, the coloring should result in a highly psychedelic viewing experience!
Flames of Passion
2D Art
June 01, 2009, 02:16:21 AM
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