Based on the tips from a forum user, in a topic I created days ago, I created the following procedure:
Code: Select all
; Darken Image procedure, based on the source code from the PB forum
; Image Number, Darken %
;
; V1.0 - 1/FEB/2016
;
Procedure DarkenImage(image_number,darken_percent)
StartDrawing(ImageOutput(image_number))
DrawingMode(#PB_2DDrawing_AlphaBlend)
Box(0, 0, ImageWidth(image_number),ImageHeight(image_number), RGBA(0, 0, 0, 2.5*darken_percent))
StopDrawing()
EndProcedure
Thanks!
Kind regards,
>Marco A.G.Pinto
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