POV-Ray : Newsgroups : povray.beta-test.binaries : Playpen idea for povr -1 to 1 seed patterns. : Playpen idea for povr -1 to 1 seed patterns. Server Time
24 Feb 2024 11:13:00 EST (-0500)
  Playpen idea for povr -1 to 1 seed patterns.  
From: William F Pokorny
Date: 11 Oct 2020 14:14:51
Message: <5f834b9b@news.povray.org>
While thinking of deleting the quilted value pattern, started to toy 
with the idea of replacing it with a seed pattern having values in the 
function_interval range of -1 to 1.

The wave shape modifiers have been extended to support +- function 
values, but to make use of them without some seed, you need to create 
functions as input.

What if we had one or more seed or base patterns aimed at being fuel for 
more complex patterns?

Idea thus far looks promising.Two images attached. One showing the 
concept from seed pattern through to more complex patterns derived from 
it. The other a larger fall color image using the technique.

A - The seed pattern on a y plane. Negative values as red and positive 
values as green. The black between the near 0 values.(using 
function_interval)

B - What is in A, but used directly in an isosurface.

C - Combining two of A in an average pigment. (function_interval)

D - Pattern of C as an isosurface.

E - C pattern (adding sine_wave along with function_interval)

F - Using E in an isosurface.

G - Adding six more rotations of A to the C average pigment.

H - G using the modified povr cubic_wave (selection) functionality.

I - H adding phase -0.1 to shift the colors toward negative red.

J - H again with phase +0.1 and adding some turbulence.

K - J adding the povr wave inverse wave keyword.

L - J made more turbulent. Adding a light to the scene.

Bill P.


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Attachments:
Download 'seedpattrnstory.jpg' (438 KB) Download 'fallcolors.jpg' (285 KB)

Preview of image 'seedpattrnstory.jpg'
seedpattrnstory.jpg

Preview of image 'fallcolors.jpg'
fallcolors.jpg


 

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