[REQ] displacement to use perturbed normals

[CTZn]

Object: to use a wavelenght independent parameter to perturb displacement's construction normals (optional)

• At this time displacement uses either the shading normals or the geometric normals for construction. This new alternative would add one (rare) degree of freedom to displacement mapping, effectively replacing advanced meshing tools by a simple grayscale map.

This one sounds odd I reckon, but look:

madcoo's palmtree bark

With that trick madcoo could use a gradient as perturbator and have the displaced trunk leafs oriented upwards. Better, if the gradient slope is not linear we can change their orientation over the trunk height (higher leafs are closer to trunk tangent), how nice would that be ?

[psor]

Are you asking for something like vector displacement (click)? Could you give an example
through a picture? Then it would be, at least for me, easier to understand.

edit: Or what about Dieter Morgenroth's implicit surface plugin for V-Ray ...






take care
psor

[CTZn]

The request is kind of related but much simpler, I did a video to illustrate it:

displacement_to_use_perturbed_normals.avi

There are a few explosives sounds... and please let me know your operating system if you can't see it (everyone).

[CTZn]

displacement_to_use_perturbed_normals_2.avi

The sequel. Better, shorter, stronger (accent experiments apart) !

[CTZn]

perturbator:




displacement:




result:



Based again on madcoo's project

[Jambert]

+1 , look easy to use and realy useful

[Borgleader]

cool videos CTZn youre easy to understand (thought you should know)

[CTZn]

Not really, thanks for telling Borgleader ! I don't have a cat to speak english with

Sometimes I'm going like "aoao" for a simple "r" but that's ok I think ;D

Yeah honestly I had my own back kicked by the result, the feeling is very natural. I have more applications in mind (insects parts, technical parts, micro shot of an hair, art and stuff).

[madcoo]

Finally had enough time to watch your videos, they're great!
I love the idea, indeed it would be something very useful, and the result is great !


Glad my project inspired you !!!


Great job, I have to say i'm impressed with your 3D technique, you look like you were born with a 3D program in your hands!!!

[zeitmeister]

Fantastic and interesting tests!
But could you encode the videos with another codec, please? I'm not able to watch them on the Mac...

[CTZn]

Thanks a lot for telling zeitmeister, I was worrying about this, really !

Could you please recommend a compatible codec for me ? I intend to produce video tutorials and that's my biggest concern atm.

The actual codec is H263+ from the ffdshow codecs suite coming with VLC, I choosed it precisely because I thought it would be compatible (and it is efficient).

[zeitmeister]

I have VLC too, but it doesn't seem to work in the browser.
For Mac users, H.264-MOVs are working, further ordinary WMVs or optimally Flash-Video (FLV).
But I don't know a PC freeware to create them with...

[CTZn]

I use CamStudio wich in turn can use any installed (video) codec (audio is mp3 or raw). I guess I'll make sure that QT can play the files in the future, that's indeed not the case yet

I'm downloading DivX7 as I found the link thanks to quicktimeplayer.exe (21Mo ? how am I going to need that ? I shouldn't tell but I hate to face an Apple's page on my PC as much as wmv, du'h). Anyways it was on Apple site and comes with a mac version, I guess it is pretty common ?

I'll seek for the brute H264, more of my type. Thank you zeitmeister !

Just found out that DivX7 is H264, great. It will be DivX 6.8.5 Codec.