Illuminant
Standard illuminants with Y normalized to 1.0.
Provides normalized XYZ tristimulus coordinates for various standard
light sources, supporting both 2° and 10° standard observers.
Constants
case A
/** Incandescent/tungsten light, ~2856 K. */
case C
/** Deprecated daylight simulator, ~6774 K. */
case D50
/** ~5003 K daylight; print and ICC profile reference white. */
case D55
/** ~5503 K daylight (mid-morning/afternoon). */
case D60
/** ~6000 K daylight; ACES reference white. */
case D65
/** ~6504 K daylight; sRGB and Display P3 reference white. */
case D75
/** ~7504 K daylight (overcast sky, north light). */
case E
/** Theoretical equal-energy illuminant (flat spectrum). */
case F11
/** Narrow-band white fluorescent, ~4000 K. */
case F2
/** Cool white fluorescent, ~4230 K. */
case F7
/** Broadband daylight fluorescent, ~6500 K. */
Methods
public function whitePoint(Observer $observer): WhitePoint
Get the normalized XYZ tristimulus white point.
Parameters
| Name | Type | Default |
|---|
$observer |
Observer |
2 |