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Diffeo Hair Conversion Example - Monica Hair

Krys KryngleKrys Kryngle Posts: 311
edited October 2020 in Blender Discussion

This is an example of Diffeomorphic's hair conversion from transparency mapped mesh to particles.  I've done a few now and Monica hair worked really well.  Some conversions required a lot of work to get them right.  This one worked with only a few edits to the particle hairs above the character's left ear, which took about 1 minute.  The material is Blender's built in principled hair bsdf shader.  Changing hair color from brown to blonde or anywhere in between requires changing one value, between 0 and 1.

Rendered straight from Blender using cycles, no post work (other than the compositor).

image

If anyone else has some examples, WIP's or whatever, I'd love to see them. 

Post edited by Krys Kryngle on

Comments

  • brainmuffinbrainmuffin Posts: 1,267
    edited October 2020

    What steps do you tend to do? Convert using Diffeo and then changing the shader in Blender to principled hair?

    Post edited by brainmuffin on
  • Krys KryngleKrys Kryngle Posts: 311
    brainmuffin said:

    What steps do you tend to do? Convert using Diffeo and then chaning the shader in Blender to principled hair?

     

    Yup.  Also changing the particle settings for hair size, clumping, child particles, etc.

  • brainmuffinbrainmuffin Posts: 1,267
    Krampus said:
    brainmuffin said:

    What steps do you tend to do? Convert using Diffeo and then chaning the shader in Blender to principled hair?

     

    Yup.  Also changing the particle settings for hair size, clumping, child particles, etc.

    Ok. I soon will be trying another V8 transfer. Let's see if I can follow along in the song book... :-)

  • brainmuffinbrainmuffin Posts: 1,267

    Is the comb tool an add-on?

  • nicsttnicstt Posts: 11,715

    They can create a lot of individual particle systems which can be both good and bad;  definitely bad when updating settings, so I created a script to do that.

  • Krys KryngleKrys Kryngle Posts: 311
    nicstt said:

    They can create a lot of individual particle systems which can be both good and bad;  definitely bad when updating settings, so I created a script to do that.

    I use the 'resize hair' option to create only one particle system.  For shorter hair I pick around 9 vertices, for longer maybe around 13 vertices.  It works well.  Resize in blocks works ok too, but simple is better for my small brain.

    • Resize Hair: Change the number of hair vertices so all strands have the same number, and hence belong to the same particle system.
    • Hair Length: The number of hair vertices, if hair is resized.
    • Resize In Blocks:  Change the number of hair vertices to a multiple of ten. This results in a moderate number of particle systems and fairly uniform vertex density.

     

    Thanks a million for that script.  I plugged all my values in for Monica Hair so all I have to do is convert the hair and run the script.  HUGE time saver.  Really appreciate you sharing that.

  • brainmuffinbrainmuffin Posts: 1,267

    I've posted a WIP in the renders thread. Her hair and skin are what I'm working on next. I'll see what I understand.

  • TheMysteryIsThePointTheMysteryIsThePoint Posts: 3,216
    brainmuffin said:

    Is the comb tool an add-on?

    No, you just have to have a particle system selected and be in particle edit mode.

  • TheKDTheKD Posts: 2,711
    edited October 2020
    nicstt said:

    They can create a lot of individual particle systems which can be both good and bad;  definitely bad when updating settings, so I created a script to do that.

    I must have missed it, where did you post your script share?

    NVM, I thought I remembered you posting one after my princess it render lol. So to use it, I select the hair, then run it in the script text box?

    Post edited by TheKD on
  • PadonePadone Posts: 3,995
    edited October 2020

    I second @Krampus. Absolutely do use the resize and sparsity options to get manageable hair. Also do not forget to separate the scalp and hide it.

    http://diffeomorphic.blogspot.com/p/hair.html

    Post edited by Padone on
  • nicsttnicstt Posts: 11,715
    Krampus said:
    nicstt said:

    They can create a lot of individual particle systems which can be both good and bad;  definitely bad when updating settings, so I created a script to do that.

    I use the 'resize hair' option to create only one particle system.  For shorter hair I pick around 9 vertices, for longer maybe around 13 vertices.  It works well.  Resize in blocks works ok too, but simple is better for my small brain.

    • Resize Hair: Change the number of hair vertices so all strands have the same number, and hence belong to the same particle system.
    • Hair Length: The number of hair vertices, if hair is resized.
    • Resize In Blocks:  Change the number of hair vertices to a multiple of ten. This results in a moderate number of particle systems and fairly uniform vertex density.

     

    Thanks a million for that script.  I plugged all my values in for Monica Hair so all I have to do is convert the hair and run the script.  HUGE time saver.  Really appreciate you sharing that.

    Welcome

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