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Procedural 3D Modeling Using Geometry Nodes in Blender

You're reading from   Procedural 3D Modeling Using Geometry Nodes in Blender Discover the node-based workflow for physics-based and procedural modeling using Blender 4.5 LTS

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Product type Paperback
Published in Oct 2025
Publisher Packt
ISBN-13 9781836203018
Length 428 pages
Edition 2nd Edition
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Table of Contents (32) Chapters Close

Preface
1. Part I: Familiarizing Yourself with the Node System
2. An Introduction to Geometry Nodes FREE CHAPTER 3. Understanding the Functionality of Basic Nodes 4. Must-Have Add-Ons for Building Node Trees 5. Part II: Creating a Mesh in the Geometry Nodes System
6. Making Use of Node Primitives 7. Distributing Instances onto a Mesh 8. Working with the Spreadsheet in Blender 9. Creating and Modifying Text in the Geometry Node Editor 10. Part III: Modifying Meshes and Curves in the Geometry Nodes System
11. Editing Curves with Nodes 12. Manipulating Mesh Using Geometry Nodes 13. Part IV: Hands-On Projects Involving Advanced Workflow Techniques
14. Creating a Procedural Plant Generator 15. Creating a Procedural Brick Wall Generator 16. Constructing a Procedural LED Panel 17. Part V: Best Practices to Improve Your Workflow
18. Tips and Tricks for the Geometry Node Editor 19. Troubleshooting the Most Common Problems in Geometry Nodes 20. Part VI: Familiarizing with the Simulation Zone
21. Introduction to the Simulation Zone 22. Experimenting with Points in the Simulation Zone 23. Creating a Procedural Fountain Using Points 24. Baking in the Geometry Node Editor 25. Part VIII: Intermediate Exercises to Improve Your Workflow
26. Simulating Bugs Crawling on Objects 27. Creating a Shrinkwrapping Simulation 28. Common Issues Users Experience with Simulation Zone 29. Unlock Your Book’s Exclusive Benefits 30. Other Books You May Enjoy
31. Index

Adding randomization to your Curves

In this section, we will show you how to manipulate your Curves by adding a randomization pattern to them. This will be handy if you’re making anything that involves a Curved Line of some sort, for example, a growing twig or a tree trunk.

In Figure 8.1, you can see the nodes that we will be using in this section:

Figure 8.1: The nodes you’ll need

Let’s take a quick look at the individual nodes:

  • Noise Texture: We will need the Noise Texture node to add noise randomization to our Curve.
  • Random Value: This node’s responsibility is to return random values in the selected datatype. In this demo, we’ll use the Vector datatype. This means that it will generate three random values within the set boundaries for each vertex.
  • Set Position: This is the most important node in this section because it is responsible for modifying our Curve. The task of this node is to set the position of...
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