Initial checkin of Pika from heckimp

plug-ins/gradient-flare/README

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

plug-ins/gradient-flare/flares/Bright_Star

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+PIKA GFlare 0.25
+100.000000 NORMAL
+100.000000 NORMAL
+75.000000 SCREEN
+Flare\040Glow\040Radial\0401
+%white
+%white
+75.000000 0.000000 0.000000
+Flare\040Rays\040Radial\0401
+%white
+Flare\040Rays\040Size\0401
+100.000000 -75.000000 0.000000
+16 20.000000
+%blue_grad
+%random
+%random
+16.000000 0.000000 13.600000
+POLYGON 6 1

plug-ins/gradient-flare/flares/Classic

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+PIKA GFlare 0.25
+100.000000 NORMAL
+40.000000 SCREEN
+20.000000 SCREEN
+Flare\040Glow\040Radial\0403
+%white
+%white
+85.000000 0.000000 0.000000
+%white_grad
+%white
+%random
+125.000000 0.000000 0.000000
+85 60.000000
+Flare\040Glow\040Radial\0404
+%random
+%random
+20.000000 0.000000 0.000000
+CIRCLE 6 1

plug-ins/gradient-flare/flares/Default

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+PIKA GFlare 0.25
+95.300003 NORMAL
+23.000000 ADDITION
+20.900000 SCREEN
+Radial\040Glow\0401
+%white
+%white
+100.000000 0.000000 -145.899994
+%white_grad
+%white_grad
+%random
+70.400002 0.000000 0.000000
+21 87.300003
+Flare\040Radial\040103
+Flare\040Sizefac\040101
+%random
+40.000000 0 0
+CIRCLE 6 1

plug-ins/gradient-flare/flares/Distant_Sun

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+PIKA GFlare 0.25
+100.000000 NORMAL
+90.000000 ADDITION
+50.000000 SCREEN
+Flare\040Radial\040102
+%white
+%white
+136.000000 0.000000 55.000000
+%yellow_grad
+Flare\040Glow\040Angular\0401
+%random
+110.000000 140.000000 -12.000000
+63 90.000000
+Flare\040Glow\040Radial\0404
+Flare\040Rays\040Size\0401
+%yellow_grad
+30.000000 30.000000 40.000000
+POLYGON 6 1

plug-ins/gradient-flare/flares/GFlare_101

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+PIKA GFlare 0.25
+100.000000 NORMAL
+50.000000 NORMAL
+35.500000 NORMAL
+Flare\040Radial\040101
+%white
+%white
+100.000000 0.000000 0.000000
+%white_grad
+%random
+%random
+100.000000 0.000000 0.000000
+40 50.000000
+Flare\040Glow\040Radial\0401
+%random
+%random
+40.000000 0 0
+CIRCLE 6 1

plug-ins/gradient-flare/flares/GFlare_102

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+PIKA GFlare 0.25
+100.000000 NORMAL
+62.799999 NORMAL
+37.900002 SCREEN
+Flare\040Radial\040102
+%white
+%white
+100.000000 0.000000 -85.300003
+%red_grad
+%random
+%random
+100.000000 0.000000 -155.899994
+40 20.000000
+Flare\040Radial\040102
+%random
+Skyline
+40.000000 0 0
+CIRCLE 6 3

plug-ins/gradient-flare/flares/Hidden_Planet

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+PIKA GFlare 0.25
+100.000000 NORMAL
+100.000000 NORMAL
+100.000000 NORMAL
+Flare\040Glow\040Radial\0402
+Flare\040Glow\040Angular\0401
+%white
+100.000000 0.000000 0.000000
+Flare\040Rays\040Radial\0402
+%white
+%white
+50.000000 90.000000 0.000000
+2 85.000000
+%white
+%white
+%white
+0.000000 0.000000 0.000000
+CIRCLE 6 1

plug-ins/gradient-flare/flares/meson.build

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+install_data([
+    'Bright_Star',
+    'Classic',
+    'Default',
+    'Distant_Sun',
+    'GFlare_101',
+    'GFlare_102',
+    'Hidden_Planet',
+  ],
+  install_dir: pikadatadir / 'gflare',
+)

plug-ins/gradient-flare/meson.build

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+subdir('flares')
+
+plugin_name = 'gradient-flare'
+
+plugin_sources = [
+  'gradient-flare.c',
+]
+
+if platform_windows
+  plugin_sources += windows.compile_resources(
+    pika_plugins_rc,
+    args: [
+      '--define', 'ORIGINALFILENAME_STR="@0@"'.format(plugin_name+'.exe'),
+      '--define', 'INTERNALNAME_STR="@0@"'    .format(plugin_name),
+      '--define', 'TOP_SRCDIR="@0@"'          .format(meson.project_source_root()),
+    ],
+    include_directories: [
+      rootInclude, appInclude,
+    ],
+  )
+endif
+
+executable(plugin_name,
+  plugin_sources,
+  dependencies: [
+    libpikaui_dep,
+    math,
+  ],
+  install: true,
+  install_dir: pikaplugindir / 'plug-ins' / plugin_name,
+)