How do I create geometry in SceneKit?

Question

I have been experimenting with Apple's new SceneKit for fun, but I cannot seem to figure out how to input vertex data without loading a .dae file.

Does anybody who has been testing SceneKit have any idea how to set or modify vertex data?

Answer 1

SceneKit is primarily a scene graph API and it isn't designed to be a complete solution for all your rendering needs; it's designed to augment existing APIs such as GLKit and CoreAnimation.

Primarily the focus of the API is loading serialized geometry assets (.dae files) and organizing them in a scene graph. There aren't very many robust alternative methods to get geometry into the API.

However, you may find SCNGeometry's geometryWithSources: selector to be what you need. Here's an example in practice.