CGHOW | Ashif Ali

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Particle / Ribbon Spirals on Mesh Surface in UE5 Niagara Tutorial | Download Files
hi, guys today I have created this simple effect using a trick to make particle and ribbon spiral behavior on static mesh surfaces.

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Video Title: Creating Particle Spirals on a Mesh Surface in Unreal Engine

Introduction: Hi guys, I’m Asif Ali, and you’re watching CGHOW. In today’s video, I’ll be showing you how to create particle spirals on the surface of a mesh. I’ve used a sphere mesh for this effect, but you can use any mesh you like. I even experimented with tube ribbons, which also look great. So, let’s jump into the tutorial!

[Music]

First off, make sure to subscribe to my YouTube channel and click on the bell icon so you don’t miss any new video notifications.

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Tutorial Breakdown:

Step 1: Basic Setup

I’ll create this effect from scratch so you can get a rough idea of how it’s done. After that, I’ll show you the final version of the effect.

1. Create a Niagara Emitter:
   Start by creating a new Niagara Fountain, and call it “Test.”
   I’ll be using the sphere location as the emitter’s spawn point. If you increase the radius to 100 or 200, it will define the spread of the particles on the sphere.
2. Deleting Unnecessary Modules:
   Delete all the default modules, leaving only the essential ones to create a basic effect. At this point, the particles will spawn around the surface of the sphere.
3. Rotation Setup:
   To make the particles rotate, you can add a Vortex Velocity or a Force module, which will rotate the particles around the sphere’s center. However, if you want each particle to rotate around its own pivot, you’ll need to modify the setup.
4. Using Random Axis Rotation:
   If you use a random axis for rotation, you’ll see the particles rotating randomly. This works for certain effects, but for our purpose, we want the rotation to follow the normal of the mesh’s surface.

Step 2: Particle Position and Rotation from Mesh Normal

1. Using Scratch Pad for Mesh Normal:
   To align the particles with the mesh’s normal, we’ll use a Scratch Pad. Take a Static Mesh and connect it to the Random Tri Coordinates module to get random positions on the mesh’s surface. This ensures particles spawn on the sphere’s surface.
2. Normal Vector:
   You’ll also need to extract the normal vector of the mesh. Connect this normal to your particle rotation so that the particles rotate according to the mesh’s surface normal instead of random rotation. Now the particles will rotate based on the orientation of the mesh.

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Step 3: Creating the Trail Effect

1. Source and Trail Modules:
   To make the particles leave a trail, we’ll create a Trail module. Duplicate your original particle system, and this time set it to GPU for better performance.
2. Spawning Particles from Other Particles:
   Use the module Spawn Particle from Other to create a trail effect. Set the number of particles (e.g., 1000) and adjust the size of the ring. You can also control the lifetime of the particles to make them disappear after a certain time.
3. Coloring the Trail:
   For better visibility, apply a color curve to the trail particles. Use RGB values to create a color gradient, like red for the start, green in the middle, and blue at the end of the particle’s lifetime.
4. Adjusting Particle Speed and Size:
   You can tweak the spawn rate and size of the particles, adjusting how fast the spirals appear and how big the trails look. If you want a faster rotation, you can adjust the rotation value of the particles.

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Step 4: Adding Curl Noise for Dynamic Movement

You can further enhance the look by adding Curl Noise to the trails. This will create a more dynamic, fluid motion for the particles.

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Step 5: Testing with Different Meshes

1. Scalability:
   Try scaling the sphere mesh, and the particles will adjust accordingly. This makes the effect flexible and scalable for different meshes.
2. Experiment with Other Meshes:
   You can replace the sphere mesh with any other mesh, such as characters, objects, or custom shapes. This effect works great on a variety of surfaces.

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Conclusion:

That’s it for this tutorial! You can download the project file from my Patreon and experiment with different meshes and colors. It’s a basic effect, but it can be very useful in many situations.

Thanks for watching, and I hope you learned something new today. Don’t forget to subscribe for more tutorials. Take care, and keep learning!