Hello, I've added alpha value support to plplot core as discussed many months ago. I did this by (1) adding an additional member to the PLColor structure to store the alpha value and (2) adding a bunch of new functions to the API so that you can fiddle with the alpha value. I've also added a new example (x30) to demonstrate how to use some of the functions and what the effects of alpha values are in general. At present only the cairo device driver is alpha aware so you should not see any differences when using any of the other drivers.
The new functions are: plscolbga(PLINT r, PLINT g, PLINT b, PLFLT a) plgcolbga(PLINT *r, PLINT *g, PLINT *b, PLFLT *a) plscol0a(PLINT icol0, PLINT r, PLINT g, PLINT b, PLFLT a) plgcol0a(PLINT icol0, PLINT *r, PLINT *g, PLINT *b, PLFLT *a) plscmap0a(PLINT *r, PLINT *g, PLINT *b, PLFLT *a, PLINT ncol0) Note that at present you can only change / interrogate the alpha values for color table 0. Thoughts? -Hazen ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
