CGHOW | Ashif Ali

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Flower Effect in UE4 Niagara Tutorial | Download Files
hi guys today I have created this basic flower effect in ue4 Niagara. I made some variations of it also and this video is a step-by-step tutorial.

#cghow #UE5 #UE4Niagara #gamefx #ue5niagara #ue4vfx #niagara #unrealengineniagara #realtimevfx

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Intro:

• “Hi guys, I’m Asif Ali and you’re watching CGHOW. In today’s video, I’ll show you how I created this basic flower effect using a basic material. Let’s get started!”
• “Before we begin, make sure to subscribe to my YouTube channel and click on the bell icon so you get notified whenever I post new videos.”

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Creating the Material:

1. Material Setup:
   • “I have an empty project here, and the first thing we’ll do is create a new material named M_Pattern.”
   • “For now, I’ll start with a radial exponent and experiment with the settings.”
   • “By adjusting the density, we can control how sharp the effect looks. For example, increasing the density to 50 or 60 sharpens the pattern.”
   • “I can also distort the UVs using a texture. I’ll import a texture from Photoshop and use it for distortion.”
2. Edge Effect:
   • “To create just the edge, subtract one radial from another and adjust the radius. This will help form the outline or edge of the flower.”
   • “We can also use a three-color blend to achieve an edge effect. By setting red and blue to black and green to white, we get a green outline.”
3. Opacity and Color Adjustments:
   • “To make the edges sharp, we can multiply the alpha value by a higher number. This sharpens the transition.”
   • “Next, I’ll modify the texture in Photoshop to create a noise texture. I’ll use Gaussian blur and smudge tools to make the texture tileable.”
   • “Once the texture is ready, I’ll save it as a .tga file and import it into Unreal Engine.”

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Applying the Texture and Distorting:

1. Texture Setup in Material:
   • “In Unreal, I’ll add a texture coordinate and multiply it by the texture to control the tiling. I can use the fractional function to ensure it repeats correctly.”
   • “To distort the texture radially, I’ll use texture coordinates and apply parameters like distort to control the strength of the effect.”
   • “By using append nodes, I can separate the X and Y axes for more control over the distortion direction.”
2. Using UV Distortion:
   • “After adjusting the distortion, I’ll apply it to both axes and make the effect radiate outward from the center.”
   • “This will create a more complex radial pattern where I can control the distortion for both the X and Y axes separately.”

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Creating the Particle System:

1. Particle Setup:
   • “Now, let’s create a particle system and apply the material we just made.”
   • “I’ll use the fountain effect and adjust the size and gravity to get a nice stylized smoke effect.”
   • “To control the particle layering, I can set sorting to either descending or ascending, depending on whether I want new particles to appear in front or behind the others.”
2. Using Particle Color:
   • “We can also add dynamic parameters to control the particle color over time. I’ll make the edge color change dynamically, using a parameter to adjust its brightness or darkness.”
   • “By tweaking the colors and using particle curves, I can make the flower’s petals gradually change color.”

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Final Adjustments and Variations:

1. Creating Variations:
   • “To create more variations, I’ll duplicate the particle system and change some of the parameters, like size, color, and the material applied.”
   • “In the third variation, I’ll use a black body temperature effect for a more dramatic look.”
   • “In the fourth variation, I’ll adjust the spawn rate and use a torus shape for more symmetry.”
2. Rotation and Color Adjustments:
   • “I’ll apply random rotation offsets and use hue shifts to change the color of each layer, giving it a more dynamic and colorful appearance.”

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Conclusion:

• “So that’s how you can create a basic flower effect using materials and particle systems in Unreal Engine. We covered how to make variations, apply color changes, and distort textures for a cool flower effect.”
• “Thanks for watching, and don’t forget to subscribe to CGHOW for more tutorials like this. Keep learning, and see you next time!”