In this tutorial your will learn how to make rain system in unreal engine Niagara. i will also show the process of exporting splash fluid mesh from Houdini to unreal engine with VAT (vertex animation texture)
Rain Effect in Unreal Engine 4 Niagara with Houdini Splash VAT
This tutorial shows how to make a rain system in Unreal Engine 4 Niagara and export a splash fluid mesh from Houdini to Unreal with Vertex Animation Textures for the rain splashes.
Use it for weather systems and moody environments, and see the related posts below for more fluid and Houdini effects.
Video Summary: Rain Effect Using Houdini and Vertex Animation Textures in Unreal Engine
Introduction:
Ashif Ali, the creator behind CGHOW, presents a tutorial on creating a rain effect using vertex animation textures exported from Houdini into Unreal Engine.
The rain effect simulates falling raindrops and dynamic splashes, with a focus on learning the export/import process using Houdini and Unreal Engine.
Overview:
The tutorial demonstrates how a splash effect was created in Houdini and imported into Unreal Engine using vertex animation textures. This includes material setup, particle system configuration, and using dynamic parameters for fine-tuning the visual effect.
Key Points:
Creating the Splash in Houdini:
The tutorial starts by showing a scene in Houdini, where a splash is animated.
The process involves removing unwanted elements and preparing the mesh for export.
Export Process:
The splash effect is exported as a vertex animation texture using Houdini’s Vertex Animation Texture shelf tool.
The texture and mesh are then prepared for Unreal Engine.
Importing the Asset into Unreal Engine:
In Unreal Engine, the mesh and texture are imported into a new folder.
The material for the splash is set up using Unreal’s material editor, where the vertex animation texture is animated in real-time.
Setting Up the Particle System:
Raindrop Emitter:
A basic particle system is created to simulate raindrops falling from the sky.
The system uses a mesh for the raindrops, with a simple reflective material and physics parameters like gravity, random mass, and size to add realism.
Splash Emitter:
The splash effect is triggered when raindrops hit the ground using event generation in the particle system.
Dynamic parameters like speed, opacity, and reflection are controlled to create variation in the splash behavior.
Adjusting the Effect:
The tutorial shows how to control various parameters in real-time, such as the speed and size of raindrops, the splash intensity, and animation speed for the vertex animation texture.
A secondary emitter is added for additional splash effects, giving more variation to the rain’s appearance.
Additional Effects:
A butterfly effect is briefly demonstrated, showing how simple planar meshes and materials can create fluid, dynamic animations, like flying butterflies.
Conclusion:
The tutorial wraps up by summarizing the steps to create the rain effect using Houdini and Unreal Engine.
Viewers are encouraged to experiment with different animations and textures to create their own effects.
Takeaway:
By following this tutorial, viewers can learn how to integrate Houdini-generated vertex animation textures into Unreal Engine, creating dynamic and visually engaging effects like rain and splashes.
The tutorial also emphasizes controlling particle behaviors and fine-tuning effects with dynamic parameters.
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!