Fog & Particle Effects

Fog and particle effects enhance depth, atmosphere, and realism in your scene. Whether you're aiming for a mystical environment, weather effects, or immersive ambiance, these tools help you shape the mood of your virtual space.

By adjusting fog density, range, and color or customizing particle behaviors, you can create cinematic, immersive experiences in the Metaverse.

Types of Fog in XR Creator Studio

You can choose between two fog types depending on the effect you're aiming for:

Fog Type	Effect
Linear Fog	Defines a minimum and maximum distance where fog starts and fully covers the scene. Objects within the minimum distance remain clear, while objects beyond the maximum distance fade completely into the fog.
Exponential Fog	Uses a single density value to gradually increase fog thickness over distance. Requires very small values to maintain visibility.

How to Enable Fog in Your Scene

1. Open the Root Settings in the Properties Panel.
2. Locate the Fog Type dropdown menu.
3. Choose between Linear or Exponential Fog.
4. Adjust the minimum and maximum distance (for Linear Fog) or the density (for Exponential Fog).
5. Modify the fog color to match your scene’s ambiance.

🔹 Pro Tip: Use fog effects to create atmospheric depth, such as:

• Low-lying mist for eerie environments.
• Distant haze for large landscapes.
• Thick fog for horror or mystery settings.

Adding Particle Effects

The Particle emitter allow you to create animated elements like:

• Smoke
• Rain & snow
• Fire & sparks
• Magical effects

These effects are created using the Particle Emitter, which spawns, moves, and animates particles dynamically.

How to Add a Particle Emitter

1. Open the Elements panel in XR Creator Studio.
2. Select Particle Emitter and drag it into your scene.
3. Adjust the particle settings in the Properties Panel.

Particle Emitter Properties

The Particle Emitter comes with a variety of customization options to control appearance, movement, lifespan, and randomness.

Particle Appearance & Lifespan

Setting	Effect
Particle Count	Defines the maximum number of particles emitted at once. Higher values create denser effects but may impact performance.
Image/URL	Sets the visual representation of the particles (e.g., fire, smoke, snowflakes). You can upload a custom image and paste the link here or use the default texture.
Age Randomness	Adds variation to how long each particle lasts, preventing a uniform look.
Lifetime	Controls how long a particle remains visible before disappearing.
Lifetime Randomness	Introduces variation in lifespan across different particles, making the effect feel more organic.

Size Adjustments

Setting	Effect
Size Curve	Defines the growth or shrinkage of particles over time.
Start Particle Size	Sets the initial size of each particle when it is created.
End Particle Size	Determines the final size of each particle before it disappears.
Size Randomness	Adds variation to particle sizes, preventing uniform scaling.

Color & Transparency

Setting	Effect
Color Curve	Controls how the color of a particle changes over its lifetime.
Start Color	Defines the initial color of a particle.
Start Opacity	Sets the transparency level of a particle when it first appears.
Middle Color	Specifies the color transition midway through the particle’s lifetime.
Middle Opacity	Defines the transparency of a particle at its midpoint.
End Color	Determines the final color of a particle before it disappears.
End Opacity	Adjusts how transparent the particle becomes before fading out.

Velocity & Movement

Setting	Effect
Velocity Curve	Controls acceleration and deceleration of particles over time.
Start Velocity	Sets the initial speed of particles when they are emitted.
End Velocity	Defines how fast or slow particles move before disappearing.
Angular Velocity	Determines how particles rotate as they move.

🔹 Pro Tip: Use randomization settings to add natural variation and prevent a mechanical look.