Filling Objects is Easy Now (Blender Tutorial)

Introduction

In this Blender tutorial, you will learn how to utilize Geometry Nodes to fill the volume of an object without causing collisions. This technique allows for creative freedom when working with various shapes, ensuring they can be combined seamlessly. By following this step-by-step guide, you will create a simple node tree that enhances your 3D modeling skills.

Step 1: Setting Up Your Workspace

1. Open Blender and create a new project.
2. Switch to the Geometry Nodes workspace:
   • Go to the top menu and select the "Geometry Nodes" tab.
3. Add a new Geometry Nodes modifier:
   • Select your object (e.g., a cube).
   • In the modifier panel, click "Add Modifier" and choose "Geometry Nodes."

Step 2: Creating the Node Tree

1. Access the Geometry Nodes editor:
   • Click on the Geometry Nodes editor window.
2. Start building your node tree:
   • Add a Mesh to Points node:
     • Right-click and select "Add" > "Mesh" > "Mesh to Points."
   • Connect your object’s output to the input of the Mesh to Points node.
3. Add a Point Instance node:
   • Right-click and select "Add" > "Point" > "Point Instance."
   • Connect the output of the Mesh to Points node to the input of the Point Instance node.
4. Choose the object you want to fill with:
   • In the Point Instance node, select your desired object from the dropdown menu.

Step 3: Avoiding Collisions

1. Incorporate a Point Distribution node:
   • Right-click and select "Add" > "Point" > "Point Distribute."
   • Connect the output of the Point Instance node to the input of the Point Distribute node.
2. Adjust the distribution settings:
   • Use the Density value to control how many instances you want to fill the volume.
3. Add a Point Scale node to control size:
   • Right-click and select "Add" > "Point" > "Point Scale."
   • Connect the Point Scale node to the output of Point Distribute.

Step 4: Finalizing the Setup

1. Connect nodes correctly:
   • Ensure all nodes are properly linked to maintain the flow of data.
2. Preview your setup:
   • Switch to the viewport to see how the instances fill the object’s volume.
3. Experiment with different shapes and sizes:
   • Try using various objects in the Point Instance node to see how they interact.

Conclusion

You have successfully created a node tree in Blender that fills the volume of an object without collisions. This method opens up numerous possibilities for your 3D projects. As a next step, consider exploring more complex geometries and experimenting with the parameters of the nodes to further enhance your designs. Happy blending!