>  Sorry, but I don't know. I guess you will have to combine the result of
> two operations.
> 
> Best,
> Scuri
> 
Solved with ProcessSetAlphaColor

function MaskTriang2(img,size)
 local imcv = img:cdCreateCanvas()
 imcv:Begin(cd.REGION)
 imcv:Box(0,img:Width(), 0,img:Height())
 imcv:RegionCombineMode(cd.NOTINTERSECT)
 EQTriangle(imcv,size,cd.FILL)
 imcv:End()
 
 imcv:Clip(cd.CLIPREGION)
 imcv:SetForeground(cd.EncodeAlpha(cd.BLACK, 255))
 imcv:Box(0,img:Width(), 0,img:Height())
 
 imcv:Kill()
 im.ProcessSetAlphaColor(img,img,{0,0,0},0)
 return img
end

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