Recently, David Bovill wrote: > I'm chopping up a some png's that have transparent backgrounds using Rev, by > getting areas of the image using the imagedata, creating new images and then > exporting these cut-outs. I've got a few questions about images, masks and > alpha channels: > > - To re-create a PNG - do I ned to worry about maskdata - or just copy > over the imagedata and the alphadata then export?
Generally, PNG would use image/alphaData, but also remember that you can transfer both properties in one pass by using the text property (odd, yes, but that's what does it): set the text of img 1 to the text of img 2 > - Which of the image file formats supported by Rev support alphadata? PNG. > - Is maskdata used as a part of any image format? Since maskData is transparency that is only on or off, I believe it's only suitable for GIF and possibly 8 bit PNG (a PNG that contains no more than 256 colors). > - What happens when I apply maskdata or alphadata to images displayed in > Rev that do not support these features? I believe they will be converted to PNG format. I seem to recall hearing that any time an image is manipulated within Rev, it gets converted to PNG format. Not sure if anything has changed with Rev 4.5 Regards, Scott Rossi Creative Director Tactile Media, UX Design _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
