I try to build a human body with blob to make something like
https://media.istockphoto.com/photos/idea-man-person-thinking-stick-figure-brainstorming-people-3d-light-picture-id9265
83606

I started with the basic shapes of the body part as

blob{
  threshold 0.65
  cylinder{<-.4,0,0>,<-.4,2,0>, 1, 1}
  cylinder{<.4,0,0>,<.4,2,0>, 1, 1}
  cylinder{<-.4,0,0>,<-.6,-3,0>, .6, 1}
  cylinder{<.4,0,0>,<.6,-3,0>, .6, 1}

  cylinder{<.4,1.8,0>,<3,1,0>, .6, 1}
  cylinder{<-.4,1.8,0>,<-3,1,0>, .6, 1}

  sphere{  < 0,3.7,0>, 2.75, .75}
  scale 1
  rotate<0,0,0>
  translate<0,0.5,0>
  texture{ pigment{ color rgb<1,1,1>}
           finish { phong 1}}
 }

Am I on the right track? Or should I use available functions/macros such as
sphere_sweep?

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You may want to look at "Blobman"
http://news.povray.org/povray.binaries.utilities/thread/%3C3d35eec1%40news.povray.org%3E/

See if someone has an archived version of "POV-Person", perhaps look in the
Object Collection...

Also look at the examples in the documentation about using blobs to model a
hand.
http://www.povray.org/documentation/view/3.6.2/71/

Cousin Ricky posted an exquisite model of a vertebra - so he may have some
excellent suggestions.

I would say that you may want to model a standard CSG object that resembles as
closely as possible what you want, and then maybe we can apply a smooth union to
it and see how that works out.

See:
http://news.povray.org/povray.binaries.images/thread/%3Cweb.5d4b7ce3a683fa3a4eec112d0%40news.povray.org%3E/

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hi,

"Kima" <nomail@nomail> wrote:
> I try to build a human body with blob to make something like
> ...

in addition to the references Bald Eagle gave, you might find ingo's work on
inverse kinematics useful (cf animation).
http://news.povray.org/povray.binaries.animations/thread/%3CXnsA9B5D22BA1C98seed7%40news.povray.org%3E/

based on this (I think):
http://www.andreasaristidou.com/FABRIK.html


regards, jr.

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Op 19/08/2019 om 19:36 schreef Bald Eagle:
> 
> You may want to look at "Blobman"
>
http://news.povray.org/povray.binaries.utilities/thread/%3C3d35eec1%40news.povray.org%3E/
> 

If interested, I have a copy of Blobman/Blobmaster...

Just yell.

-
Thomas

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Le 19-08-19 à 11:52, Kima a écrit :
> I try to build a human body with blob to make something like
>
https://media.istockphoto.com/photos/idea-man-person-thinking-stick-figure-brainstorming-people-3d-light-picture-id9265
> 83606
> 
> I started with the basic shapes of the body part as
> 
> blob{
>    threshold 0.65
>    cylinder{<-.4,0,0>,<-.4,2,0>, 1, 1}
>    cylinder{<.4,0,0>,<.4,2,0>, 1, 1}
>    cylinder{<-.4,0,0>,<-.6,-3,0>, .6, 1}
>    cylinder{<.4,0,0>,<.6,-3,0>, .6, 1}
> 
>    cylinder{<.4,1.8,0>,<3,1,0>, .6, 1}
>    cylinder{<-.4,1.8,0>,<-3,1,0>, .6, 1}
> 
>    sphere{  < 0,3.7,0>, 2.75, .75}
>    scale 1
>    rotate<0,0,0>
>    translate<0,0.5,0>
>    texture{ pigment{ color rgb<1,1,1>}
>             finish { phong 1}}
>   }
> 
> Am I on the right track? Or should I use available functions/macros such as
> sphere_sweep?
> 
> 

If you want to be able to animate it, you should create the limbs at the 
origin, rotate them as desired, then, translate them to the desired 
location.
Fore arms and lower legs rotated at the elbow and knee, attached to arm 
and tight, then arm and tight rotated then attached to the shoulder and hip.

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