ImageGear Professional DLL v18 for Windows
IG_vect_light_get_attenuation
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ImageGear Professional v18 > API Reference Guide > Vector Component API Reference > Vector Component Functions Reference > Light Functions > IG_vect_light_get_attenuation

Glossary Item Box

This function returns the constant, linear, and quadratic attenuation factors of the light source.

Declaration:

  Copy Code 
AT_ERRCOUNT ACCUAPI IG_vect_light_get_attenuation(
        HIG_VECT_LIGHTSOURCE hLightSource, 
        float* lpConstant,
        float* lpLinear,
        float* lpQuadratic
);

Arguments:

Name Type Description
hLightSource HIG_VECT_LIGHTSOURCE Light source handle.
lpConstant float* Buffer for the constant attenuation factor.
lpLinear float* Buffer for the linear attenuation factor.
lpQuadratic float* Buffer for the quadratic attenuation factor.

Return Value:

Returns 0 if successful. Otherwise, returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

This function does not process image pixels.

Sample:

None

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