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Thread: Doticles texture

  1. #1
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    Doticles texture

    Hi,

    I added a Doticles (Dot-Particles) procedural 2D texture
    in all texture and nodal versions of RmanCollect.

    based on a Dave Hoskins's shader.
    Apply as procedural texture to surface color, bump channel or any other texture channel.

    A few animations samples, abstract, snow, confettis, worms/amoeba, bubbles,

    Click image for larger version. 

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    Click image for larger version. 

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    -Select a base color, it can be modified per dot with "Vary Color" and "Vary Type",
    choose between several basic shapes ("mode").

    -Adjust "Width" and "Vary Width" per dot.

    -Select between ""Swarming","Twirling" animation type, adjust animation "Speed",
    "Trail Steps" and "Laps".

    -Note: Dots may appear truncated if over-sized, in this case moderate the "Width" parameter.


    Denis.

  2. #2
    Super Member JohnMarchant's Avatar
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    Thanks Denis, i would love to see a drip/stains texture.

    The best i can get is using a weight map or gradient on a turbulance texture.
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  3. #3
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    Quote Originally Posted by JohnMarchant View Post
    ... i would love to see a drip/stains texture...
    Doticles is mainly for moving basic dots
    There's an infinity of drip shapes, depends what's the material,
    did you try Blob in Shape Bomber?

    Click image for larger version. 

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    Denis.
    Last edited by dpont; 08-09-2019 at 11:44 PM.

  4. #4
    Super Member JohnMarchant's Avatar
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    Hi Denis yes i tried the blob shape, but it did not give me the clumping and then streaking i needed.

    Something like these examples.

    https://www.textures.com/download/de...sty0035/120625
    https://www.textures.com/download/de...king0250/76133
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  5. #5
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    Found an issue with this last addition, causing the disparition of the Dunes node in list,
    fixed, please download again, nodal versions only.

    Denis.

  6. #6
    Yes, a streaking mode is needed as all of the drip modes have (what seems to be) random motion on dripping.
    And with that streaking mode, a number-of-streaks parameter would be dynamic: 15 for your example, John, and 1 or 2 for a paint can after poured out of.
    What I am unable to recreate from the example is the source area and the streak blending from there. That is, only within the texturing environment.


    Denis,
    What do you mean by "drip shapes"? I don't understand that: are you saying to feed some shape into doticle? How?

    Thank you.
    Robert

  7. #7
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    Quote Originally Posted by UnCommonGrafx View Post
    ...What do you mean by "drip shapes"? I don't understand that: are you saying to feed some shape into doticle?...
    I didn't speak of Doticles,
    but about the other drip/stain request, I meaned this term is used
    for many different kind of effects, material, surface, wet dirt, painting, etc.

    As I remember I did this manually in PhotoShop, using noises, scratches
    and direction blur, but this was just a start, then I needed a lot of filters,
    or erasing partially the result.

    In a texture procedural context, this can be done with a "trailing" effect,
    while this is easy for a dot, the dot is not convincing for natural effect,
    but when applied to a noisy shape, this costs too much time to compute,
    because we may need almost hundred passes,
    I even don't recommend to use multi-passes for "Rain Drips".




    Denis.

  8. #8
    I understand. 50 passes got slow and I didn't see a reason to go higher because it wasn't looking as expected.
    I'm not a programmer but here's my thoughts to that. As well, thanks for the conversation;
    A streaks parameter would have to have trails to do its thing? Why not a repeat function/copy paste thingy to continue a single line of drip? No need for a natural effect of noise added as the drip (in the examples) don't have them. The artist "pays" for the time it takes, I agree, when they add noise.


    Rain drops does pretty stuff when animated in this way. Kudos to you on all of these invaluable tools.

    Yes, the only way I've seen to do this procedurally is through IFW and it is broken now. Nodes at least. Maybe textures, too, but I'd have to look. (Ha, the ability came with textures first. edit)

    Maybe a texture that works with a list of items for which drips will follow? The system allows one 'null' follow but not a list.
    Last edited by UnCommonGrafx; 08-10-2019 at 07:56 AM.

  9. #9
    Member toeknee's Avatar
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    You are so awesome Denis, thank you very much. I am so happy I can use your tools again and then you go and make them even better. You totally rock.
    The LW Beast From the East

  10. #10
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    Thanks Denis.
    If you open your mind too much, your brain will fall out - T.Minchin

  11. #11
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    I found and fixed an issue with saving/loading textures in nodal versions of Doticles only.

    Added "Shape" selection in Doticles,
    "Circle","Triangle","Square","Rectangle","Cross"," Pentagon","Hexagon","5xStar","6xStar".

    A new "Peaked" mode.

    Added "Pulse" for oscillating the width/size per dot
    and "Rotate" for 'non-circle' shapes, as separate speed control.

    a few sample animations,

    Click image for larger version. 

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    Denis.

  12. #12
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    For some reasons one of the above animation can only be loaded as a static jpg,
    replaced by this simpliest one,

    Click image for larger version. 

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    Also this experimentation,
    animated bump Doticles with a static Turbulence as texture Displacement,

    Click image for larger version. 

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    Denis.
    Last edited by dpont; 08-26-2019 at 12:08 AM.

  13. #13
    Cooooool!

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