pho@dilow.esd.sgi.com (Paul Ho) (06/29/90)
Hi everyone! I am the original poster of the fade question. Thanks for all the responses! In fact, there were so many I could not keep track of all the senders' names. Here is a summary of the results: - lots of replies on using color intensities and color map. Won't work if you don't have a color Mac. - use a sequence of patterns to simulate fade. Won't work with text (pen pattern ignored on DrawChar, DrawString and DrawText. - Use multiple bitmap/pixmap with mask. Slow and memory hog. - modify bitmap/pixmap with a fade/dissolve algorithm. Complicated. So, it seems that there are alot of different choices but not one perfect choice. I guess it depends on the situation where a fade is needed. For those who want to read more about the fade/dissolve algorithm, try Dr Dobbs (nov 87). Pretty interesting reading. (I don't have the name of the sender to gave me this info off hand, but thanks!). Again I want to thank all those mac programmers for your responses. This network info sharing really works! Paul