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Member "gimp-2.10.28/plug-ins/gradient-flare/README" (14 Sep 2021, 3069 Bytes) of package /linux/misc/gimp-2.10.28.tar.bz2:


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    1 ==========================================================================
    2 
    3 	GFlare plug-in ver 0.25
    4 
    5 		Eiichi Takamori <taka@ma1.seikyou.ne.jp>
    6 
    7 ==========================================================================
    8 
    9   GFlare is a plug-in for GIMP.  The name "GFlare" is short for
   10 "Gradient Flare".  It renders lense flare effect using custom
   11 gradients.  The basic idea is suggested by Marcelo Malheiros,
   12 originally based on a 3DStudio MAX plug-in called LenZFX:
   13 	http://www.digimation.com/techsupp/lzfxfeat.htm
   14 
   15 INSTALL:
   16 
   17 1) Edit Makefile, if needed.
   18 
   19 2) Type "make install".
   20 
   21 3) Type "make install-data" if needed. (It copies sample gradients and
   22    gflares under ~/.gimp)
   23 
   24 3) Add new entry to ~/.gimp/gimprc as
   25      (gflare-path "${gimp_dir}/gflares:${gimp_data_dir}/gflares")
   26 
   27 3) Run GIMP. The menu path is <Image>/Filters/Effects/GFlare.
   28 
   29 
   30 HOW TO USE IT:
   31 
   32   The document is not yet done. Try and see.
   33 
   34   Main Dialog:
   35   - Preview
   36       click on it changes the position of GFlare
   37   - Settings page
   38     - Center, Radius (pixel), Rotation (degree), Hue Rotation (degree)
   39     - Vector Angle (degree) and Vector Length (percentage to Radius)
   40     - adaptive supersampling ... same as "Blend tool"
   41   - Selector page
   42     - ListBox
   43     - New, Edit, Copy, Delete buttons. Edit button invokes GFlare Editor.
   44 
   45   GFlare Editor:
   46   - General page:
   47   - Glow page:
   48   - Rays page:
   49   - Second Flares page:     
   50 
   51   WARNING: This plug-in is in development stage, and the code is very
   52 alpha. The GFlare datafile format may be changed in future version.
   53 
   54   Suggestions and ideas for user interface, flare algorithm, etc. are
   55 very welcome.
   56 
   57 
   58 KNOWN BUGS:
   59 
   60   There are still lots of bugs, of course. ;-)
   61   They seem related to GTK, and I don't know exactly how I can fix them.
   62 
   63   * It warns at startup as:
   64     ** WARNING **: file gdkwindow.c: line 422 (gdk_window_move_resize): "window != NULL"
   65     If you are annoyed, accompanying "gtkviewport.c.patch" will shut up
   66     the warning.
   67   * Edit button remains prelighted when GFlare Editor dialog is done.
   68   * Dialogs are not shown quickly at startup.
   69   * Sometimes note tab labels are disappeared.
   70   * Sometimes it crashes, but I don't know yet why it happens.
   71 
   72 TODO:
   73   * Random hue scattering for Second Flares.
   74   * Improve internal gradients.
   75   * Currently number of Second Flares is fixed(30).
   76   * Change opacity for one second flare dynamically, in inverse
   77     proportion to the size of it.
   78   * Reduce dialog size
   79   * Add tweak ability "How to combine Glow, Rays, Second Flares in
   80     what order"
   81 
   82 
   83 CREDITS:
   84 
   85   Marcelo Marheiros and Federico Mena Quintero suggested a lot of
   86 ideas. Very Thanks!!
   87 
   88   Marcelo made gradients whose names end with _1, _2, etc. The
   89 gradients whose names end with _101, _102 etc. are mine.
   90 
   91   Quartic did awful Gradient Editor, and gradients PDB procedures.
   92 
   93   A fair proportion of this code was taken from:
   94 
   95   GIMP - The GNU Image Manipulation Program
   96   Copyright (C) 1995 Spencer Kimball and Peter Mattis
   97 
   98   Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero
   99   federico@nuclecu.unam.mx