100 lines
3.0 KiB
Plaintext
100 lines
3.0 KiB
Plaintext
==========================================================================
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GFlare plug-in ver 0.25
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Eiichi Takamori <taka@ma1.seikyou.ne.jp>
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==========================================================================
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GFlare is a plug-in for PIKA. The name "GFlare" is short for
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"Gradient Flare". It renders lense flare effect using custom
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gradients. The basic idea is suggested by Marcelo Malheiros,
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originally based on a 3DStudio MAX plug-in called LenZFX:
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http://www.digimation.com/techsupp/lzfxfeat.htm
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INSTALL:
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1) Edit Makefile, if needed.
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2) Type "make install".
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3) Type "make install-data" if needed. (It copies sample gradients and
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gflares under ~/.pika)
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3) Add new entry to ~/.pika/pikarc as
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(gflare-path "${pika_dir}/gflares:${pika_data_dir}/gflares")
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3) Run PIKA. The menu path is <Image>/Filters/Effects/GFlare.
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HOW TO USE IT:
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The document is not yet done. Try and see.
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Main Dialog:
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- Preview
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click on it changes the position of GFlare
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- Settings page
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- Center, Radius (pixel), Rotation (degree), Hue Rotation (degree)
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- Vector Angle (degree) and Vector Length (percentage to Radius)
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- adaptive supersampling ... same as "Blend tool"
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- Selector page
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- ListBox
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- New, Edit, Copy, Delete buttons. Edit button invokes GFlare Editor.
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GFlare Editor:
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- General page:
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- Glow page:
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- Rays page:
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- Second Flares page:
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WARNING: This plug-in is in development stage, and the code is very
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alpha. The GFlare datafile format may be changed in future version.
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Suggestions and ideas for user interface, flare algorithm, etc. are
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very welcome.
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KNOWN BUGS:
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There are still lots of bugs, of course. ;-)
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They seem related to GTK, and I don't know exactly how I can fix them.
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* It warns at startup as:
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** WARNING **: file gdkwindow.c: line 422 (gdk_window_move_resize): "window != NULL"
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If you are annoyed, accompanying "gtkviewport.c.patch" will shut up
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the warning.
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* Edit button remains prelighted when GFlare Editor dialog is done.
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* Dialogs are not shown quickly at startup.
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* Sometimes note tab labels are disappeared.
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* Sometimes it crashes, but I don't know yet why it happens.
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TODO:
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* Random hue scattering for Second Flares.
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* Improve internal gradients.
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* Currently number of Second Flares is fixed(30).
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* Change opacity for one second flare dynamically, in inverse
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proportion to the size of it.
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* Reduce dialog size
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* Add tweak ability "How to combine Glow, Rays, Second Flares in
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what order"
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CREDITS:
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Marcelo Marheiros and Federico Mena Quintero suggested a lot of
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ideas. Very Thanks!!
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Marcelo made gradients whose names end with _1, _2, etc. The
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gradients whose names end with _101, _102 etc. are mine.
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Quartic did awful Gradient Editor, and gradients PDB procedures.
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A fair proportion of this code was taken from:
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PIKA - Photo and Image Kooker Application
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Copyright (C) 1995 Spencer Kimball and Peter Mattis
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Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero
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federico@nuclecu.unam.mx
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