---
title: "irradiance(atPoint:colorSpace:)"
framework: modelio
role: symbol
role_heading: Instance Method
path: "modelio/mdllight/irradiance(atpoint:colorspace:)"
---

# irradiance(atPoint:colorSpace:)

Returns the radiance of the light as received at a specific point in the same scene, expressed using the specified color space.

## Declaration

```swift
func irradiance(atPoint point: vector_float3, colorSpace: CGColorSpace) -> Unmanaged<CGColor>
```

## Parameters

- `point`: A point in the same world coordinate space as the light.
- `colorSpace`: The color space in which to interpret the light’s color.

## Return Value

Return Value The color and intensity of the light’s effect on the specified point.

## See Also

### Working with Lights

- [irradiance(atPoint:)](modelio/mdllight/irradiance(atpoint:).md)
- [lightType](modelio/mdllight/lighttype.md)
- [colorSpace](modelio/mdllight/colorspace.md)