Extracted from Pike v7.4 release 341 at 2005-11-30.
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predef::
Image
Image.Layer

Method Image.Layer()->set_alpha_value()


Method set_alpha_value

object set_alpha_value(float value)
double alpha_value()

Description

Set/get the general alpha value of this layer. This is a float value between 0 and 1, and is multiplied with the alpha channel.