I am totally unclear on the etiquette here. I wanted to announce some significant improvements to SiVi (etiquette issue #1) and when attempting to “reply” on the original thread got a message “are you sure…its been 60 days” that kind of thing (etiquette issue #2–should I have stayed on original thread?).
Purpose of tool: allows one to experiment with creating 2D Simplex Noise textures, giving user access to parameters that can be used procedurally, or to generate actual graphics for use.
jar can be downloaded and run from http://hexara.com/SiVi.jar
or tool can be run online via http://www.hexara.com/SimplexBuilder.html
[source: https://github.com/philfrei/SiVi]
If you download and run the jar, it is possible to save jpg/gif/png files of the graphics that are generated by the tool. I didn’t put in all the permissions hoo-ha for Applets.
There is a “Gallery” (menubar: View/Gallery). On it are a dozen or so templates of various graphics that can be used as starting points. I hope to add to this now and then.
I chucked my “tutorial” effort. I may be prone to overlong posts, but that doesn’t make one a good author. 
Anyway, I think the tool is easier to use via “discovery” now, especially with the help of the gallery templates.
Current features:
- specifiable number of octaves, all accessible in their own scrollbar
- three “gradients” that can be modulated by the noise (1) linear, (2) radial, (3) sinusoidal–but just on the X-axis currently
- color map tool, up to 10 “pegs” and optional HSB color space, with slots for “scratch” colors
- can specify if color mapping is “clamped” (use of min and max values) or “ringed” (can cycle through multiple times) if values fall out of range
wish list:
more gradients, improved “sinusoidal” gradient gui
ability to specify “perspective effects” via gui
ability to generate animation sequences & animated gifs