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Thread: Maya light decay settings?

  1. #1
    Junior Member
    Join Date
    Mar 2005
    Location
    Lulea, Sweden
    Posts
    29

    Maya light decay settings?

    I do not know if this is a bug in the Maya 0.74 exporter or if I do not understand decay ratio for lights in Maya? The exported ATTENUATION_SCALE outputs the value 1.0 even if I change the Intensity parameter.

    Bug? Or is there another way of changing the decay ratio in Maya?

    On a similar topic, OpenGL allows you to change the decay ratio for each constant, linear and quadratic decay but collada only allows one setting through the params ATTENUATION and ATTENUATION_SCALE.
    Is there changes on this for the 1.4 specification perhaps?
    / Master Tonberry

  2. #2
    Senior Member
    Join Date
    Apr 2005
    Location
    Feeling Software, Montreal, Quebec
    Posts
    111
    Hi Master Tonberry,

    There is no way to change the decay ratio in Maya. The "Intensity" parameter is really a multiplier for the light color. The 'Weekly Development Build' versions of ColladaMaya currently export/import the "Intensity" parameter, but there will be some changes to it soon, for COLLADA 1.4 compliance. In ColladaMaya, the ATTENUATION_SCALE factor is a constant, always exported as 1.0 and it is discarded on import.

    About COLLADA 1.4: it does not introduce new light parameters.

    Regards,
    Guillaume Laforte
    Feeling Software Inc
    http://www.feelingsoftware.com

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