void SetLightIntensityPunctual(float intensity)
{
switch (m_Light.type)
{
case LightType.Directional:
m_Light.intensity = intensity; // Always in lux
break;
case LightType.Point:
if (lightUnit == LightUnit.Candela)
{
m_Light.intensity = intensity;
}
else
{
m_Light.intensity = LightUtils.ConvertPointLightLumenToCandela(intensity);
}
break;
case LightType.Spot:
if (lightUnit == LightUnit.Candela)
{
// When using candela, reflector don't have any effect. Our intensity is candela = lumens/steradian and the user
// provide desired value for an angle of 1 steradian.
m_Light.intensity = intensity;
}
else // lumen
{
if (enableSpotReflector)
{
// If reflector is enabled all the lighting from the sphere is focus inside the solid angle of current shape
if (spotLightShape == SpotLightShape.Cone)
{
m_Light.intensity = LightUtils.ConvertSpotLightLumenToCandela(intensity, m_Light.spotAngle * Mathf.Deg2Rad, true);
}
else if (spotLightShape == SpotLightShape.Pyramid)
{
float angleA, angleB;
LightUtils.CalculateAnglesForPyramid(aspectRatio, m_Light.spotAngle * Mathf.Deg2Rad, out angleA, out angleB);
m_Light.intensity = LightUtils.ConvertFrustrumLightLumenToCandela(intensity, angleA, angleB);
}
else // Box shape, fallback to punctual light.
{
m_Light.intensity = LightUtils.ConvertPointLightLumenToCandela(intensity);
}
}
else
{
// No reflector, angle act as occlusion of point light.
m_Light.intensity = LightUtils.ConvertPointLightLumenToCandela(intensity);
}
}
break;
}
}
// Helper for punctual and area light unit conversion
public static float ConvertPunctualLightLumenToCandela(LightType lightType, float lumen, float initialIntensity, bool enableSpotReflector)
{
if (lightType == LightType.Spot && enableSpotReflector)
{
// We have already calculate the correct value, just assign it
return(initialIntensity);
}
return(LightUtils.ConvertPointLightLumenToCandela(lumen));
}