Ornatrix 3ds Max | Use Procedural gradient for Clump Count
6In Ornatrix 3ds Max, you can use a procedural gradient to control the number of clumps in the Ox Clump modifier. In the video, I use the Surface Comb Strand Data channel to create this gradient. After I create guides from this gradient and use them in Ox Clump through External Clumps option.
This video is a follow up to the previous lesson - https://www.youtube.com/watch?v=zbP9UgRiB4k
Before you start this lesson - watch the previous one.
You can download this scene here - https://ephere.com/plugins/autodesk/max/ornatrix/forums/general/thread_14702.html
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TIMING:
0:00 - Picking up where we left off in the previous lesson
0:03 - Creating an additional Furball that I will use as a procedural guide for Clump
0:07 - Remove the ChangeWidth modifier as we don't need it.
0:14 - Go back to the previous Ornatrix object from the previous lesson and copy the Ox Surface Comb modifier. We already applied a procedural gradient to the channel.
0:23 - Select our new object, choose Edit Guides and add the Surface Comb modifier above. As a result - we get a channel that can be used in Clump.
0:34 - The Mode should definitely be Sink Size.
0:39 - Change the channel name for convenience.
0:44 - Enable HairFromGuides
0:54 - Temporarily change the generation method to guides as hair. It's more convenient for me. But you don't need to do this step.
1:01 - Change the hair to guides using the "Guides from Hair" modifier. Because these are the guides we need for the external clumps.
1:07 - In Distribution Channel, select the channel we created in SurfaceComb. In my case it is called GuidesGEN. Don't worry about the other channels. We don't need them.
1:21 - It may look like nothing is working, and it is. Because you need to change the generation method to something else. For example, Uniform.
1:33 - Everything is working now. I'll tell you right now - it's not perfect. The developers know and are thinking about how to improve it, but already you have parametric guides thanks to this approach, using a mask that we didn't draw, but created in Surface Comb. That's pretty cool!
1:36 - Now you can control the number of them in Root Count. And we can see that the gradient is working, but not perfectly. We'll fix that manually a little bit later.
1:46 - Let's rename our new guide object to GUIDES CLUMP. Again - this is for convenience. You can name it whatever you want.
1:52 - Selecting the main object. We remove the Surface Comb modifier from the last lesson. We don't need it anymore.
1:58 - Go to Clump and select External Clump Strands. Click on the slot with the same name and add our GUIDES CLUMP object.
2:16 - Click Create to create a clump through its guides. We end up with a series of clumps controlled by a parametric gradient from the Surface Comb. Pretty cool, right?
2:32 - Using Root Count, we change the number of guides, which affects the number of clumps. Note that this is not visually updated (hopefully they'll fix this in the future).
2:39 - So you have to go to the Clump modifier and click Create again after changing the number.
2:43 - As you can see - it all works.
3:00 - Now I will show you how to add additional guides if there are not enough. Only do this if you are 100% sure that you are not going to change the number of guides.
3:05 - Inside the GUIDE CLUPS object, create an additional Edit Guide.
3:12 - Select Brush mode and create a brush. With this brush, Ornatrix will allow you to create interpolated guides. You can watch this tutorial on this topic - https://www.youtube.com/watch?v=Gg5LEQscwvs&t=1s.
3:16 - Choose Position = Center, this is so that when you click on an object - a guide will be created, not a random number.
3:19 - Add guides where you want. You can add as many guides as you want. You can move them, rotate them. Whatever you want =) It is already as your imagination desires.
3:40 - Update the clump with Create and get a nicer result. Thats all. Enjoy =)
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Enjoy watching!
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Andrew Krivulya Charly.
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