Perfect Procedural UV Setup for Curves in Blender Geo Nodes
Procedural design is all about flexibility, and your UVs should be no different. In under five minutes, I’ll show you how to capture the Spline Factor and Profile Curve data to drive your UV unwrap in geometry nodes. This technique allows for seamless texture tiling across any curve, ensuring your procedural pipes, wires, and ropes look professional and render fast.
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⏰ Timestamps:
00:00 - Introduction: The Problem with Curve Texturing
00:23 - Getting Started: Procedural UV Setup in Blender
01:16 - Why Generated vs. Object Coordinates Fail on Splines
02:08 - Calculating Custom UVs via Spline & Profile Factors
03:13 - Testing the UV Map & Fixing Overlaps with Trim Curve
04:08 - Real-time Demo: Drawing New Procedural Curves
04:51 - Normalizing UV Grids: Factor vs. Spline Length
05:36 - Outro: Final Tips for Procedural Workflows
🧠 What You Will Learn:
Master Procedural UV Unwrapping: Learn how to bypass manual seams by using Geometry Nodes to generate dynamic texture coordinates for any spline-based mesh.
Solve Texture Stretching: Discover the technical difference between Factor and Length mapping to ensure consistent texel density across variable curve segments.
Advanced Attribute Capture: Harness the Spline Factor of both the main curve and the profile curve to create a perfect 2D coordinate system (U and V).
Non-Destructive Workflow: Build a setup where you can draw new curves or edit existing geometry while your textures automatically update without distortion.
Fixing UV Overlaps: Learn the Trim Curve trick to solve common profile artifacts and ensure your procedural UV maps are production-ready for PBR materials.
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