Logo by Pauldelbrot - 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: Follow us on Twitter
 
*
Welcome, Guest. Please login or register. January 16, 2018, 10:42:58 AM


Login with username, password and session length


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


Pages: 1 ... 15 16 [17] 18 19 ... 37   Go Down
  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: True 3D mandelbrot type fractal  (Read 382617 times)
0 Members and 1 Guest are viewing this topic.
David Makin
Global Moderator
Fractal Senior
******
Posts: 2286



Makin' Magic Fractals
WWW
« Reply #240 on: September 26, 2009, 12:00:44 PM »

Awesome render Thomas - is that using the Monte Carlo methods that you mentioned for the light casting ?
Logged

The meaning and purpose of life is to give life purpose and meaning.

http://www.fractalgallery.co.uk/
"Makin' Magic Music" on Jango
lycium
Fractal Supremo
*****
Posts: 1158



WWW
« Reply #241 on: September 26, 2009, 12:06:59 PM »

yup. i've been reading http://graphics.stanford.edu/papers/veach_thesis/ again lately, it's the bible of monte carlo image synthesis smiley
Logged

bugman
Conqueror
*******
Posts: 122



WWW
« Reply #242 on: September 26, 2009, 04:16:03 PM »

Very cool. I expect your renderings will blow us all out of the water. How long did this render take and how many samples per pixel? Are you using an efficient distance estimator like David Makin's? What constant did you use?
« Last Edit: September 26, 2009, 04:25:13 PM by bugman » Logged
twinbee
Fractal Fertilizer
*****
Posts: 383



WWW
« Reply #243 on: September 26, 2009, 05:22:19 PM »

Ace stuff, lycium. Like a 3D-shaped snowflake if you could ever get such a thing. GI seems to reveal more detail by brightening inside areas, i.e. nooks and crannies.

Any chance of an inside shot of the mandelbulb?
Logged
David Makin
Global Moderator
Fractal Senior
******
Posts: 2286



Makin' Magic Fractals
WWW
« Reply #244 on: September 26, 2009, 06:55:42 PM »

Hi all, I just corrected and optimised the original code I posted for the "delta" DE method:

http://www.fractalforums.com/3d-fractal-generation/true-3d-mandlebrot-type-fractal/msg7812/#msg7812
Logged

The meaning and purpose of life is to give life purpose and meaning.

http://www.fractalgallery.co.uk/
"Makin' Magic Music" on Jango
David Makin
Global Moderator
Fractal Senior
******
Posts: 2286



Makin' Magic Fractals
WWW
« Reply #245 on: September 27, 2009, 12:14:15 PM »

Hi, finally got around to taking a copy of my 3D IFS formula and changing it from escape-time IFS to standard escape-time.

First result:

http://makinmagic.deviantart.com/art/True-3D-Degree-7-Two-lights-138388564

If you compare it to the earlier render (also in my scraps on DA) you'll see the increased sense of perspective gained from using the extra light source and including a specular component.

Will be adding code for shadows today smiley

When I finally get around to writing the class-based raytracing suite in earnest I will be including options for global illumination methods.
Logged

The meaning and purpose of life is to give life purpose and meaning.

http://www.fractalgallery.co.uk/
"Makin' Magic Music" on Jango
David Makin
Global Moderator
Fractal Senior
******
Posts: 2286



Makin' Magic Fractals
WWW
« Reply #246 on: September 27, 2009, 08:02:36 PM »

Exactly the same image but with shadows (at last), @2560*2560 took 1hour 43mins on this 3GHz P4HT running in hyperthreaded mode at around 2GHz (just 21mins extra for shadowcasting).



If no image above then go here:

http://makinmagic.deviantart.com/art/True-3D-Deg7-2lights-Shadows-138430287
« Last Edit: September 27, 2009, 11:57:25 PM by David Makin » Logged

The meaning and purpose of life is to give life purpose and meaning.

http://www.fractalgallery.co.uk/
"Makin' Magic Music" on Jango
twinbee
Fractal Fertilizer
*****
Posts: 383



WWW
« Reply #247 on: September 27, 2009, 10:59:00 PM »

Wow, a true behemoth. This is the best pic yet of the whole thing, and it's so much nicer with shadows too.
Logged
stigomaster
Guest
« Reply #248 on: September 27, 2009, 11:27:12 PM »

That is where I am going to live! There can't be a more beautiful location anywhere.
Logged
David Makin
Global Moderator
Fractal Senior
******
Posts: 2286



Makin' Magic Fractals
WWW
« Reply #249 on: September 27, 2009, 11:52:40 PM »

That is where I am going to live! There can't be a more beautiful location anywhere.

Actually I suspect the degree 4 may be even more aesthetically pleasing - at least in close-up smiley


All please note that I have some speed optimisations and improvements to do as to get the two renders I just posted there are actually 5 rays being cast per pixel just to get an accurate surface normal and at the moment it's just doing a full trace for each whereas it shouild be possible to do a full trace for the centre ray and limited ray-segment traces for the 4 adjacent rays - also I still have the issue of the dark outlines in areas of overlap and I want a better way of getting the "connectedness" i.e. to decide when an adjacent point should actually be used in the normal calculation.
Logged

The meaning and purpose of life is to give life purpose and meaning.

http://www.fractalgallery.co.uk/
"Makin' Magic Music" on Jango
lycium
Fractal Supremo
*****
Posts: 1158



WWW
« Reply #250 on: September 28, 2009, 06:08:01 AM »

david that latest render of yours is really nice and clean, visualises the structure well smiley also i agree about low degrees looking better close-up, the higher degree ones tend to display mainly periodicity of what's there in the low degree fractals.

i replied to paul's question about the constant used in email, it's from wikipedia: c = -0.8x + 0.156y

twinbee, i'm looking forward to rendering more images of these fractals, but first i need to get my pc sorted. got a quote on new pc parts and servicing today, once they get an appropriately massive heatsink in stock for the i7 i'll get cooking on those zooms smiley

finally, i've taken a week's leave from wednesday to work on fractal stuff!  afro
Logged

twinbee
Fractal Fertilizer
*****
Posts: 383



WWW
« Reply #251 on: September 28, 2009, 04:29:45 PM »

The "Mandelbulb Garden" pic is a zoom into my earlier broccoli one, and the "Ice Plateau Cross" below it is a section to the left of my previous mountain pic.

For those new to this thread, both of them are zooms into David's 'behemoth object' pic above cheesy

"Mandelbulb Garden"

(bigger size)

"Ice Plateau Cross"


I've asked Karl if he can help simplify the algorithm like he did before (to remove the sin/cos stuff) - the extra speed boost would be so welcome...
« Last Edit: November 14, 2009, 09:39:39 AM by twinbee » Logged
bugman
Conqueror
*******
Posts: 122



WWW
« Reply #252 on: September 29, 2009, 12:11:44 AM »

Here's an animated 4th order Julia set with GI:
http://bugman123.com/Hypercomplex/Julia-White4.m1v
Logged
David Makin
Global Moderator
Fractal Senior
******
Posts: 2286



Makin' Magic Fractals
WWW
« Reply #253 on: September 29, 2009, 12:51:51 AM »

You guys are totally crazy! What is more useless than a 3D brot? I love that smiley

Craziness can produce amazing results:

http://www.fractalforums.com/3d-fractal-generation/true-3d-mandlebrot-type-fractal/msg8090/#msg8090
http://www.fractalforums.com/3d-fractal-generation/true-3d-mandlebrot-type-fractal/msg8082/#msg8082
http://www.fractalforums.com/3d-fractal-generation/true-3d-mandlebrot-type-fractal/msg8075/#msg8075
http://www.fractalforums.com/3d-fractal-generation/true-3d-mandlebrot-type-fractal/msg7737/#msg7737

On the subject of crazy. I just found a great anagram of "David Makin" ---> "Via mad kind". Most appropriate cheesy
« Last Edit: September 29, 2009, 12:54:45 AM by David Makin » Logged

The meaning and purpose of life is to give life purpose and meaning.

http://www.fractalgallery.co.uk/
"Makin' Magic Music" on Jango
lycium
Fractal Supremo
*****
Posts: 1158



WWW
« Reply #254 on: September 29, 2009, 04:18:28 AM »

phoar paul, that animation is awesome! i'd really like to do some animations of interpolating parameters too, but my rendering system is crazy slow... maybe when i get a new gpu or larrabee or something wink
Logged

Pages: 1 ... 15 16 [17] 18 19 ... 37   Go Down
  Print  
 
Jump to:  

Related Topics
Subject Started by Replies Views Last post
Implementation: 3D mandelbrot type fractal 3D Fractal Generation « 1 2 » steamraven 27 23114 Last post August 21, 2016, 12:13:13 AM
by ironfractal
Re: True 3D mandelbrot type fractal Other / General Discussion shanest 2 10735 Last post November 20, 2009, 03:24:26 AM
by fractalrebel
True 3D mandelbrot fractal (search for the holy grail continues) The 3D Mandelbulb « 1 2 ... 17 18 » illi 260 49446 Last post November 25, 2010, 12:57:55 AM
by cKleinhuis
New fractal type... latest 3d type.. a z^2 for Benoit Images Showcase (Rate My Fractal) M Benesi 0 3010 Last post October 21, 2010, 07:14:00 AM
by M Benesi
My First Mandelbrot...Okay not true. Images Showcase (Rate My Fractal) Zephitmaal 3 2372 Last post January 07, 2012, 04:30:36 PM
by Pauldelbrot

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 0.281 seconds with 27 queries. (Pretty URLs adds 0.017s, 2q)