Logo by Sockratease - Contribute your own Logo!

END OF AN ERA, FRACTALFORUMS.COM IS CONTINUED ON FRACTALFORUMS.ORG

it was a great time but no longer maintainable by c.Kleinhuis contact him for any data retrieval,
thanks and see you perhaps in 10 years again

this forum will stay online for reference
News: Visit us on facebook
 
Home Help Search Gallery Downloads Login Register
*
Welcome, Guest. Please login or register. November 26, 2025, 12:08:27 PM


Login with username, password and session length


The All New FractalForums is now in Public Beta Testing! Visit FractalForums.org and check it out!


Welcome to Fractal Forums > Fractal Software > Programming > Fragmentarium > quat cubic4D with abs() frag
Pages: [1]   Go Down
« previous next »
  Print  
Share this topic on DiggShare this topic on FacebookShare this topic on GoogleShare this topic on RedditShare this topic on StumbleUponShare this topic on Twitter
Author Topic: quat cubic4D with abs() frag  (Read 5069 times)
0 Members and 1 Guest are viewing this topic.
mclarekin
Fractal Senior
******
Posts: 1739
« on: August 29, 2017, 06:06:36 AM »
@sabine. Not sure if I  have the DE totally correct huh?

InitialW usually a small number  like 0.2
* quatCubic4D-3_Files.zip (9.58 KB - downloaded 265 times.)
Logged
Sabine
Fractal Fertilizer
*****
Posts: 373



WWW
« Reply #1 on: August 29, 2017, 04:26:15 PM »
 shocked shocked shocked

Will check tonight!
Logged
sabine62.deviantart.com
Sabine
Fractal Fertilizer
*****
Posts: 373



WWW
« Reply #2 on: August 29, 2017, 09:47:48 PM »
@mclarekin First impression: fantastic!  A Beer Cup A Beer Cup A Beer Cup

Will need to test some more and DE might be not 100%, but while what I tried to do was an utter failure embarrass, this produces exactly what I want.

Now I must try to understand what you have done there:) Why for instance scale 1222 must be 1,2,2,2...
And why what you have done does what cubicquat in mb3d does, while its formula is quite different...

Below testrun with testversion of new raytracer which C-JR is building.
* mclarekin_cubicquat.zip (10.47 KB - downloaded 266 times.)

* 1-8.jpg (111.91 KB, 800x450 - viewed 563 times.)
Logged
sabine62.deviantart.com
mclarekin
Fractal Senior
******
Posts: 1739
« Reply #3 on: August 30, 2017, 01:09:58 AM »
scale 1222 is just the same maths rearranged.  The constant "2.0 * "   has  been taken out of the formula and used as default parameter.
If I put them back,  then it would be scale1111 as the vec4 parameter. It just the way I have always coded a quat, (although in Mandelbulber2 it is scale 1220 so that it is 3D until you start adding 4D parameters)


Quote
gradient = (vec3(escapeLength(p+xDir*EPS), escapeLength(p+yDir*EPS), escapeLength(p+zDir*EPS))-r)/EPS;

Yep, that looks like DeltaDE type thing.

With analytic versus deltaDE , generally I use deltaDE with formulas where analytic won't work.  But sometimes it is worth trying both as It can be parameter specific ie  some parts of the fractal are best with analytic and other parts are best with deltaDE.
Logged
Sabine
Fractal Fertilizer
*****
Posts: 373



WWW
« Reply #4 on: August 31, 2017, 09:15:43 AM »
 embarrass Sometimes answers can be so simple...  embarrass
Thank you very much, mclarekin!  A Beer Cup A Beer Cup A Beer Cup
Logged
sabine62.deviantart.com
Pages: [1]   Go Down
« previous next »
  Print  
« previous next »
 
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Looking for Quat and Vchira Introduction to Fractals and Related Links penang 1 3430 Last post May 10, 2008, 03:48:37 PM
by Sockratease
Orbit Trap in GI frag Fragmentarium « 1 2 3 » vinz 38 9505 Last post June 20, 2013, 07:48:01 PM
by vinz
Quat Mandelbulb3D Gallery Aqualoop 0 1598 Last post June 28, 2013, 09:52:03 PM
by Aqualoop
Frag to GPU asm dump Fragmentarium « 1 2 3 » 3dickulus 30 8312 Last post June 16, 2015, 02:02:23 AM
by 3dickulus
benesi T1 PT quat Mandelbulber Gallery mclarekin 0 1126 Last post February 05, 2016, 09:27:45 AM
by mclarekin

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM
Page created in 0.522 seconds with 27 queries. (Pretty URLs adds 0.011s, 2q)