Re: does this PNG have transparency?
I like it! Nice job. Phil On 1/27/20 8:21 AM, Bob Sneidar via use-livecode wrote: Voila! function pngIsTransparent pImageFile if not (there is a file pImageFile) then return "ERROR: Invalid file path!" set the filename of the templateImage to pImageFile put numtochar(0) into tZero return (tZero is in the alphaData of the templateImage) OR (tZero is in the maskData of the templateImage) end pngIsTransparent Another one for the masterLibrary Bob S On Jan 27, 2020, at 08:16 , Paul Dupuis via use-livecode wrote: You should be able to use 'the templateImage' (see dictionary), and numToChar probably should be numToByte As in: on mouseUp answer file "Pick an image:" if it is empty then exit to top set the filename of the templateImage to it put numToByte(0) into tZero put (tZero is in the alphaData of the templateImage) OR (tZero is in the maskData of the templateImage) end mouseUp ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode -- Phil Davis 503-307-4363 ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: does this PNG have transparency?
Voila! function pngIsTransparent pImageFile if not (there is a file pImageFile) then return "ERROR: Invalid file path!" set the filename of the templateImage to pImageFile put numtochar(0) into tZero return (tZero is in the alphaData of the templateImage) OR (tZero is in the maskData of the templateImage) end pngIsTransparent Another one for the masterLibrary Bob S > On Jan 27, 2020, at 08:16 , Paul Dupuis via use-livecode > wrote: > > You should be able to use 'the templateImage' (see dictionary), and numToChar > probably should be numToByte > > As in: > > on mouseUp >answer file "Pick an image:" >if it is empty then exit to top >set the filename of the templateImage to it > >put numToByte(0) into tZero >put (tZero is in the alphaData of the templateImage) OR (tZero is in the > maskData of the templateImage) > end mouseUp ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: does this PNG have transparency?
You should be able to use 'the templateImage' (see dictionary), and numToChar probably should be numToByte As in: on mouseUp answer file "Pick an image:" if it is empty then exit to top set the filename of the templateImage to it put numToByte(0) into tZero put (tZero is in the alphaData of the templateImage) OR (tZero is in the maskData of the templateImage) end mouseUp On 1/27/2020 10:53 AM, Bob Sneidar via use-livecode wrote: Phil, Is img "my test" an existing image, or does setting the filename of img "my test" create the image on the fly? I'm trying to turn this into a function that returns true or false. Bob S On Jan 24, 2020, at 14:35 , Phil Davis via use-livecode wrote: Maybe this? It seems to work in my simple testing. Am I missing something? on mouseUp answer file "Pick an image:" if it is empty then exit to top set the filename of img "my test" to it put numtochar(0) into tZero put (tZero is in the alphaData of img "my test") OR (tZero is in the maskData of img "my test") end mouseUp Phil ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: does this PNG have transparency?
Phil, Is img "my test" an existing image, or does setting the filename of img "my test" create the image on the fly? I'm trying to turn this into a function that returns true or false. Bob S > On Jan 24, 2020, at 14:35 , Phil Davis via use-livecode > wrote: > > Maybe this? It seems to work in my simple testing. Am I missing something? > > on mouseUp > answer file "Pick an image:" > if it is empty then exit to top > set the filename of img "my test" to it > > put numtochar(0) into tZero > put (tZero is in the alphaData of img "my test") OR (tZero is in the > maskData of img "my test") > end mouseUp > > Phil ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: does this PNG have transparency?
I think that's pretty clever. -- Jacqueline Landman Gay | jac...@hyperactivesw.com HyperActive Software | http://www.hyperactivesw.com On January 24, 2020 4:37:20 PM Phil Davis via use-livecode wrote: Maybe this? It seems to work in my simple testing. Am I missing something? on mouseUp answer file "Pick an image:" if it is empty then exit to top set the filename of img "my test" to it put numtochar(0) into tZero put (tZero is in the alphaData of img "my test") OR (tZero is in the maskData of img "my test") end mouseUp Phil On 1/24/20 1:48 PM, Phil Davis via use-livecode wrote: I usually make things harder than they need to be, so I'm asking: Is there a simple way my LC code can determine if a PNG image is completely opaque or not? Thanks - Phil -- Phil Davis 503-307-4363 ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: does this PNG have transparency?
Maybe this? It seems to work in my simple testing. Am I missing something? on mouseUp answer file "Pick an image:" if it is empty then exit to top set the filename of img "my test" to it put numtochar(0) into tZero put (tZero is in the alphaData of img "my test") OR (tZero is in the maskData of img "my test") end mouseUp Phil On 1/24/20 1:48 PM, Phil Davis via use-livecode wrote: I usually make things harder than they need to be, so I'm asking: Is there a simple way my LC code can determine if a PNG image is completely opaque or not? Thanks - Phil -- Phil Davis 503-307-4363 ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
does this PNG have transparency?
I usually make things harder than they need to be, so I'm asking: Is there a simple way my LC code can determine if a PNG image is completely opaque or not? Thanks - Phil -- Phil Davis 503-307-4363 ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
