Skip to main content

Enumeration: FalloffType

Defines how light intensity decreases with distance in 3D rendering.

The FalloffType enum controls the mathematical formula used to calculate how light diminishes as it travels away from its source. Different falloff types create different lighting effects and can significantly impact the realism and mood of 3D scenes.

Example​

// Setting physical light falloff for a spotlight
spotlight.falloffType = FalloffType.PHYSICAL;

// Using GLTF-compatible falloff for exported models
if (isForExport) {
  scene.lights.forEach(light => {
    light.falloffType = FalloffType.GLTF;
  });
}

Enumeration Members​

DEFAULT​

DEFAULT: 0

Uses falloff calculations based on the material specification. Standard materials use standard falloff, while PBR materials can specify custom falloff characteristics.

GLTF​

GLTF: 1

Follows the falloff model described in the glTF PBR specification. Provides better compatibility when sharing models between different 3D engines and platforms.

PHYSICAL​

PHYSICAL: 2

Uses physically accurate inverse square law falloff. Light intensity decreases proportionally to the square of the distance, matching real-world light behavior for the most realistic rendering.

STANDARD​

STANDARD: 3

Uses the legacy standard material falloff calculations. Provided for compatibility with older materials and consistent behavior across material types.