I'm looking for the best way to combine/blend two (or more) solid-color bitmap so the colors are combined. The bitmaps have one color with an alpha value of 102 for solid color bitmaps, 102 and decreasing to 0 at about 48% of the bitmap's height (from either the top or bottom) for graduated color bitmaps, and for split-field, the same, except not a gradual change---just 102 then 0 at 50%.
By blending, what I mean is this: Imagine that you have two sheets of colored plastic. You look through one of them, and you see its color over the scene behind it. You then add the second sheet of a different color clear plastic, and now you see the two colors interacting to make a new color. That is what I'm trying to do. In the case of graduated or split-field, the transparent area should not interfere with a second filter's color where it is colored in the transparent area of another. Btw, all of these bitmaps are created as needed using Bitmap.createBitmap (ARGB_8888), paint, and drawing on the canvas. I was using 60x40 png files for the solid colors, but the transparent white background ended up not being so transparent.... Now I just create larger bitmaps with NO background---just color (alpha 102) or completely transparent. What would be the best way to do this? If Porterduff, which mode? Or would some type of matrix calculation be better? Or is there another way that I haven't come across yet? (If the best way calls for a matrix, a pointer to a good matrix tutorial would be really helpful.) Thanks, --jim -- THE SCORE: ME: 2 CANCER: 0 73 DE N5IAL (/4) | DMR: So fsck was originally called spooky1...@gmail.com | something else. < Running FreeBSD 7.0 > | Q: What was it called? ICBM / Hurricane: | DMR: Well, the second letter was different. 30.44406N 86.59909W | -- Dennis M. Ritchie, Usenix, June 1998. Android Apps Listing at http://www.jstrack.org/barcodes.html -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
