Orient Object along Normal

Question

I wan't to orientate my cylinders along the blue arrows. I am thinking that normals are the solution but since I am new to Geonodes in Blender I dont know how. Can you help me?

Answer 1

Unfortunately, due to the structure of your Geometry Nodes, it is not entirely clear to me what exactly your goal is, so I'll try to provide an answer here based on a guess that might help you.

There are a lot of questions/answers that deal exactly with this topic, but in principle require the understanding of the node Align Euler to Vector.

Hence a try:

I assume you want to instantiate cylinders circularly on multiple planes.

1. Create a cylinder first.
2. Move it by half of its height on the Z-axis. Thus its rotation center is around the lower end.
3. Then instantiate it along the points of a circle.
4. Use the input node Normal on the input Vector of the node Align Euler to Vector to create a Rotation for the objects to be instantiated. Simply put, this node uses the normals of the points, and in this case aligns the Z-axis of the object to be instantiated along them.
5. Then instantiate this geometry again along the points of a line.

Maybe this answer will help you a bit. I just didn't want to leave the question unanswered.

_{(Blender 3.2+)}