I know others have asked here before ...but I still must persist... anyone
having success on this subject? Most of mine continually come out like rugs
or astro turf! Looking for something a little wild with spirit to it.

Geoffrey

Post a reply to this message

Geoffrey Potvin wrote:
> 
> I know others have asked here before ...but I still must persist... anyone
> having success on this subject? Most of mine continually come out like rugs
> or astro turf! Looking for something a little wild with spirit to it.
> 
> Geoffrey

You might want to check out Chris Colefax's hair/fur generating macro's.

http://www.geocities.com/SiliconValley/Lakes/1434/

-- 
Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Post a reply to this message

> You might want to check out Chris Colefax's hair/fur generating macro's.
>
> http://www.geocities.com/SiliconValley/Lakes/1434/
>
> --
> Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Yes, very impressive! ...a plug-in for the Moray Modeler would be even more
so. Hair/spikes/spines/fur etc. are still the biggest barriers. I have
created some very convincing textures for skin, eyes etc. but am still
stumbling over the hair. This should help immensely ...Thanx!

Geoffrey

Post a reply to this message

OK ...it took me about three days to get the hang of this ...but now I'm
getting stumped again!

I have three separate meshes to apply hair to ...a scalp piece, a left and a
right eye brow (maybe more later ...facial hair etc.). Each requires
different thickness, lengths and growth directions etc. of hair. The
declarations for one seem to take precedence over the other two ...or can
you declare different types of hair types in the same scene?
(I hope so).

I probably should be asking Chris Colefax directly, bur perhaps someone here
else is also playing with these macros. Aside from that, I would highly
recommend these ...very convincing and with a little practice you can create
virtually any hair style, fur type or even plant cover. By breaking your
mesh into pieces you can even create parts in the hair (hair must point in
opposite directions) ...curious to see how others have responded to this.
Actually, the mesh deformation in general is an excellent complement to
POV-Ray's procedural texture capabilities.

>
> You might want to check out Chris Colefax's hair/fur generating macro's.
>
> http://www.geocities.com/SiliconValley/Lakes/1434/
>
> --
> Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Post a reply to this message

Geoffrey Potvin wrote:
> 
> OK ...it took me about three days to get the hang of this ...but now I'm
> getting stumped again!
> 
> I have three separate meshes to apply hair to ...a scalp piece, a left and a
> right eye brow (maybe more later ...facial hair etc.). Each requires
> different thickness, lengths and growth directions etc. of hair. The
> declarations for one seem to take precedence over the other two ...or can
> you declare different types of hair types in the same scene?
> (I hope so).

I don't have the macro or the instructions in front of me right now
but with Chris' utilities if you want to use different effects from
the same file you usualy need to include the file multiple times for
each effect you need.

i.e.

#declare a value =
#include hair.mcr
mesh{...}

#declare a value =
#include hair.mcr
mesh{...}

#declare a value =
#include hair.mcr
mesh{...}


-- 
Ken Tyler -  1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Post a reply to this message

Ken <tyl### [at] pacbellnet> wrote:
> I don't have the macro or the instructions in front of me right now
> but with Chris' utilities if you want to use different effects from
> the same file you usualy need to include the file multiple times for
> each effect you need.
[snip]

Close - with the macro files, I've actually tended to have the file itself
included once, with subsequent macro calls used to create the effect(s).
For the hair macro file this means you'll want multiple calls of both the
hair object types, and the read_mesh macros, e.g.:

  #include "pcmhair.mcr" // Beginning of file

  #declare [ hair options ] // First mesh
  smooth_triangle_hairs_object () // Uses above options
  read_mesh ("scalp_left.pcm") // Uses above options and hair type

  #declare [ hair options ] // Changed options for second mesh
  smooth_triangle_hairs_object () // Uses above options
  read_mesh ("scalp_right.pcm") // Uses latest options and hair type

  #declare [ hair options ] // Changed options for third mesh
  triangle_patch_hairs_object () // Uses latest options
  read_mesh ("eyebrow_left.pcm") // Uses latest options and hair type

  #declare [ hair options ] // Changed options for third mesh
  triangle_patch_hairs_object () // Uses latest options
  read_mesh ("eyebrow_right.pcm") // Uses latest options and hair type

The declared options at each stage can be just those that have been added or
changed since the last options, or you may use a full set of declares each
time (which might make it easier later on to see how everything is actually
working).

Also, do feel free to ask me (or ask for me on these groups) directly - Ken
can always be relied for an excellent answer, but I should take
responsibility now and then for supporting my own creations!  Oh, and please
do post your finished image - I'd love to see it...!

Post a reply to this message

> Also, do feel free to ask me (or ask for me on these groups) directly -
Ken
> can always be relied for an excellent answer, but I should take
> responsibility now and then for supporting my own creations!  Oh, and
please
> do post your finished image - I'd love to see it...!

Yes...it worked! I had forgotten to ...or I guess it wasn't apparent that I
had to redeclare the hair objects themselves each time (by default the
plug-in declares a hair object whether you do or not ...and I was over
looking this before).

I don't know if this is breaking the rules here ...but here is a test image
for the hair (perhaps I should be posting this elsewhere?). It is far from
complete and only one of many figures I plan to do ...it will be a while
before I have something finished. I thought I'd post this before this
discussion vanished in the passing time.

I started with a more primitive figure to experiment. It looks pretty fake
because of the lousy lighting I'm using to study all the test fur/hair etc.
more clearly ...but as you can see, with a bit of scenery and some
atmospheric effects (smoke, fog etc.), it will be fairly convincing. I
suppose this gent will end up in a stony old castle ...perhaps at a heavy
wood table with a fresh kill and a mug of mead or something. By contrast, I
would like to create some high fashion models in a modern techy environment
...slick hair-doos and wearing expensive looking watches etc. The ultimate
goal, initially, was to create totally life-like subjects ...think I'm
getting there.

Thanks Chris & Ken ...and as always...Thanks for the amazing POV-Ray
raytracer.

Geoffrey

Post a reply to this message

Attachments:
Download 'man.jpg' (65 KB)

Preview of image 'man.jpg'

Geoffrey Potvin wrote:

> I don't know if this is breaking the rules here ...but here is a test image
> for the hair (perhaps I should be posting this elsewhere?). It is far from
> complete and only one of many figures I plan to do ...it will be a while
> before I have something finished. I thought I'd post this before this
> discussion vanished in the passing time.

Yes you are breaking the rules by posting a binary attachment to this group.
We have a group specifically for images - povray.binaries.images. When you
get the time stop by the announcements group and read my "welcome to the
news groups" message. It detials what the different groups on this news
server are to be used for.

It looks like a great application of the hair macro and your first efforts
with it are much better than mine were.

-- 
Ken Tyler - 1400+ POV-Ray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/

Post a reply to this message

Looks like one of those giant lumberjacks that are so often used for carpet
sale commercials :)

Post a reply to this message

As Ken pointed out, you shouldn't post binaries here.

  However, this is the best use of the hair macro that I have seen so far.
Excellent.

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

Post a reply to this message