[Closed] How <bitmap>.hasAlpha works?

Jan 30, 2011 12:59 am

Hi!
I want is to check whether a map has an alpha channel or not.
I found this in maxscript reference:
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[left]<bitmap>.hasAlpha :  Boolean, read-only
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 [left]This property  contains true if the bitmap has an alpha channel and false if it does not. 
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[left]This is the code that I use:
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[left]	bm1 = bitmap 256 256 filename:"C:\Alpha.tga"
	bm2 = bitmap 256 256 filename:"C:\No_Alpha.tga"	
	
	print bm1.hasAlpha
	--	true
	print bm2.hasAlpha
	--	true

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[left]hasAlpha returns true for both maps. Why?
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[left]The maps are in attachment.

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2 Replies

Gravey

Jan 30, 2011 12:59 am

bm1 bitmap 256 256 filename:"C:\Alpha.tga"

means that you are creating a new bitmap which would be saved to the file: C:\Alpha.tga IF you wrote:

save bm1

what you need to do is open the bitmap using the openBitmap function like so:

bm1 = openBitmap "C:\Alpha.tga"

then the hasAlpha property will work as expected

miauu

Jan 30, 2011 12:59 am

Thak you, Gravey! Everything works now.