How to Create Volumetric Hair Meshes in Ornatrix for Cinema 4D

How to Create Volumetric Hair Meshes in Ornatrix for Cinema 4D

If you are working on real-time apps, creating stylized characters, or preparing models for 3D printing, you know the pain of manual hair retopology. Converting dynamic grooms into clean, closed geometry can take hours of tedious work.

What if you could fully automate this workflow? With Ornatrix for Cinema 4D, generating grouped hair meshes is a 100% procedural, non-destructive process. Let's break down how to instantly convert your hair guides into volumetric geometry.

The Procedural Grooming Workflow

In this tutorial, we will cover how to easily generate a grouped hair mesh using pre-clumped hair. Instead of modeling by hand, we let the modifier stack do the heavy lifting.

Step-by-Step: From Strands to Volumetric Mesh

1. Procedural Clump Meshing

Open a scene containing some pre-clumped hair. Select the Clump operator and, in the Object Tab under the Sub-Clump section, turn on the "Set Clump Strand Groups" option. This will set the strand groups based on which clump they belong to.

2. Adding the Mesh from Strands Operator

Next, add a Mesh from Strands operator. Check the "Use Group Strands" option, set the mesh type to cylindrical, and set the Side Count to 10. Your hair is now converted to a volumetric mesh approximation of the strands! Each unique strand group creates its own hair mesh clump.

3. Real-Time Thickness Control

Because this process is entirely procedural, you can continue editing the hair below in the stack. Hair thickness is taken into account when generating the meshes. Simply add a Change Width operator to make the mesh volumes thicker or thinner in real-time.

4. Manual Strand Groups and 3D Printing Prep

If you need custom group meshes, you can bypass the Clump operator. Add an Edit Guides operator, select specific strands, check the "Use Strand Groups" option, and hit the "Assign" button to create unique IDs. Finally, for 3D printing, just check the "Cap Ends" option to generate flawless closed meshes.

Hardware Check: Powering Heavy 3D Scenes

Calculating dense volumetric geometry for thousands of strands requires serious processing power. I run all my Ornatrix tutorials and heavy 3D scenes on my MSI Titan 18 HX AI workstation.

  • GPU: NVIDIA GeForce RTX 5090 24 GB GDDR7 (175W TDP)
  • CPU: Intel Core Ultra 9 285HX (24 cores, up to 5.5 GHz)
  • RAM: 96 GB DDR5 5600 MHz
  • Storage: 4 TB M.2 NVMe (Gen5 + Gen4)
  • Display Setup: Working seamlessly across my 18" UHD+ (3840x2400, 120 Hz, Mini-LED) native screen and my ultrawide Samsung LC34H890WGIXCI (3440x1440) for the UI.

Thanks to the massive power of the RTX 5090 and 96 GB of RAM, generating these volumetric meshes happens instantly. There is absolutely zero viewport lag, allowing me to tweak parameters and see the stylized mesh update in real-time, which is critical for a smooth artistic flow.

Links and Resources

Ready to level up your grooming pipeline?

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