Houdini复杂绳索场景特效教程 FXPHD – HOU140 – Houdini FX Tool Building讲解在Houdini中复杂场景的制作方法，将多个镜头组合在一起，多个节点的控制等This introductory level offering aims to get you started with a solid base of the foundations of tool building, showing how to create a complex Houdini file so that it can be run in dozens or even hundreds of shots with minimal effort in a pipeline.

The course is primarily focused on a Houdini concept called OTLs, which is a way to build our own nodes out of other nodes.

To that end, the course starts by making an object-level node that automatically generates emission geo from any arbitrary camera.