Video Title: “How to Use Section Filter in Niagara Sample Settings”
Introduction:
“Hi guys, I’m Ashif Ali, and welcome to CGHOW. In today’s video, we’ll be answering a comment from a viewer asking about the section filter in the sample setting module. Let’s dive in and take a look at what it is.”
Explaining the Section Filter:
Ashif begins by explaining that the section filter is useful when working with static meshes that have multiple materials applied.
He demonstrates this using a car static mesh, which has multiple materials, and shows how to isolate the material sections for particle emission.
Step-by-Step Process:
Static Mesh Setup:
Ashif opens the car mesh and highlights the materials applied to it.
He explains that if you want to emit particles only from a specific part of the mesh (e.g., the outer body of the car), you can use the section filter to specify which section of the mesh should be used.
Creating a Niagara Effect:
He creates a new Niagara particle system and opens it up.
Dragging the car mesh into the viewport, he places it where he wants the particles to spawn.
Setting the Section Filter:
Ashif explains how to apply the section filter by selecting the static mesh in the particle system and specifying which section of the mesh the particles should use.
He demonstrates by adding the section filter and setting the index value (e.g., 0 for the outer body) to emit particles only from that specific section.
Visualizing the Effect:
Ashif adjusts the emitter’s settings, increasing the burst count to 10,000 to visualize the particle effect and adjusting the mesh size.
He shows how, even though the particles initially spawn on the whole car mesh, by setting the section filter, the particles only appear on the specific section (e.g., outer body).
Additional Notes:
He mentions that you can add multiple section filters by adding more indices (e.g., 0, 2, 5) to control where particles will emit from different parts of the mesh.
The demonstration concludes with a visual example of how changing the filter index updates where particles are emitted on the mesh.
Conclusion:
“I hope this explanation of the section filter was clear. It’s a very simple and useful tool when working with meshes that have multiple materials. You can add multiple filters for more complex setups. Thanks for watching, and keep learning. See you in the next video!”
I am Ashif Ali, Real-Time VFX Artist, I make Unreal Engine Niagara Tutorial on this channel. I've made it my mission to share my knowledge and expertise with the world through my YouTube channel. So why not join me on this exciting adventure? Follow me on my social links, subscribe to my channel, and support my growth as a creator. Together, we can create amazing things and take our skills to new heights. And who knows, you might even get access to some of my exclusive files for free!