Michael von Aichberger wrote: > > > 'Massage' the 24-bit image first, thinking out loud: > > Make another image object the same size that is some appropriate shade of > grey > > Copy the second image onto the first using an appropriate ink (probably > blend, lighten or darken) > > Copy the resulting image into a 1-bit image > > Hi Carl, > > thanks for your answer, I have played a lot with these inks, but I just > don't get it. > If you or someone else could be a little more specific, I'd really > appreciate it.
Works on my machine: on makemask mem, thresh -- thresh is the threshhold value where the mask changes from black to white (0..256) original = member(mem) hite = original.height wdth = original.width thresh = thresh + 4 -- fudge factor, dunno why, but it works amount = abs(128 - thresh) theInk = [33,35][1 + (thresh > 128)] -- either Add Pin or Subtract Pin tempImage = image(wdth, hite, 32) tempImage = original.image.duplicate() greyImage = image(wdth, hite, 32) greyimage.fill(original.rect, rgb(amount,amount,amount)) tempImage.copypixels(greyImage, original.rect, original.rect, [#ink:theInk]) maskmem = new(#bitmap) maskmem.Image = image(wdth, hite, 1) maskmem.image.copyPixels(tempimage, original.rect, original.rect) tempImage = void greyimage = void end You could even skew the mask toward different colors by messing with the rgb value greyImage gets filled with. -- Carl West [EMAIL PROTECTED] http://eisen.home.attbi.com I have no superfluous leisure; my stay must be stolen out of other affairs; but I will attend you awhile. - Isabella, Measure for Measure, Act 3 Scene 1 [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]). Lingo-L is for learning and helping with programming Lingo. Thanks!]
