As I said in the title I’m trying to build what is essentially a way for particles to move around mountains in our landscape. I want to do this by making a wind force vector field in Houdini. Currently I’ve got a few steps outlined but I’m getting stuck in a few places.
- Run a simulation over the landscape
- Saved the velocity of that simulation to a velocity field
- Reference that vector field in the Niagara particle systems
With step 1 I’ve tried using a particle sim and a pyro sim to get the vector field that I want. I haven’t figured out how to get the stimulant to run around the geometry only through it. I found this video that outlines what I’m trying to achieve but they don’t go in depth on how they achieved the results:
With Step 2 I’ve looked at a few online tutorials to see how they managed to get a vector field and their visualizations always look a lot different to what I’m getting out. Instead of the long strands I only seem to get tiny lines like so:
With step 3 I’ve managed to get the particles doing something with the outputted vector field but I don’t have a way of visualizing it so I have no idea if the fields in the right location, pointed in the right direction or is the right size.
Does anyone know how I can fix the issues I’m having?