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https://github.com/scottdraves/flam3
the original fractal flame renderer and genetic language
https://github.com/scottdraves/flam3
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the original fractal flame renderer and genetic language
- Host: GitHub
- URL: https://github.com/scottdraves/flam3
- Owner: scottdraves
- License: gpl-3.0
- Created: 2015-02-15T16:56:03.000Z (almost 10 years ago)
- Default Branch: master
- Last Pushed: 2021-03-28T20:24:29.000Z (over 3 years ago)
- Last Synced: 2024-08-02T12:51:01.481Z (4 months ago)
- Language: Shell
- Size: 1.56 MB
- Stars: 396
- Watchers: 28
- Forks: 73
- Open Issues: 20
-
Metadata Files:
- Readme: README.txt
- License: COPYING
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- awesome-starred - scottdraves/flam3 - the original fractal flame renderer and genetic language (others)
README
FLAM3 - cosmic recursive fractal flames
see the file COPYING for the license covering this software.
This is free software to render fractal flames as described on
http://flam3.com. Flam3-animate makes animations, and flam3-render
makes still images. Flam3-genome creates and manipulates genomes
(parameter sets). A C library is also installed.
Note: the following instructions are written for Linux users. Windows
users may install the cygwin package to get the "env" command or set
the envars in your windows command prompt manually. That means
instead of a command like
env dtime=5 prefix=foo. in=test.flame flam3-animate
use the following set of commands:
set dtime=5
set prefix=foo.
set in=test.flame
flam3-animate
As usual, to configure, build, and install:
./configure
make
sudo make install
If this has problems, you may need to re-generate some configuration
files. Do the following steps:
libtoolize
aclocal
automake
autoconf
and then try to configure and install as above.
This package depends on development packages for libz, libpng,
libjpeg, and libxml2.
To test it, run
flam3-render < test.flam3
and it should produce 00000.jpg and 00001.jpg, one image for each
element in the parameter file. To make an animation run
flam3-animate < test.flam3
and it should produce 100 files named 00000.jpg through 00099.jpg that
interpolate between the two elements.
envar default meaning
===== ======= =======
prefix (empty) prefix names of output files with this string.
begin j time of first frame to render (j=first time in input file) (animate only)
end n-1 time of last frame to render (n=last time specified in the input file) (animate only)
time NA time of first and last frame (ie do one frame) (animate only)
frame NA synonym for "time" (animate only)
in stdin name of input file
out NA name of output file (bad idea if rending more than one, use prefix instead)
template NA apply defaults based on this genome (genome only)
dtime 1 time between frames (animate only)
fields 0 if 1 then render fields, ie odd scanlines at time+0.5
nstrips 1 number of strips, ie render fractions of a frame at once (render only)
qs 1 quality scale, multiply quality of all frames by this
ss 1 size scale, multiply size (in pixels) of all frames by this
jpeg NA jpeg quality for compression, default is native jpeg default
format png "jpg" or "ppm" or "png"
pixel_aspect 1.0 aspect ratio of pixels (width over height), eg 0.90909 for NTSC
isaac_seed random string to be used in generating random seed. defaults to time(0)
seed random integer seed for random numbers, defaults to time+pid. deprecated.
nthreads auto number of threads to use (render and animate)
verbose 0 if non-zero then print progress meter on stderr
bits 33 also 32 or 64: sets bit-width of internal buffers (33 means 32-bit floating-point)
bpc 8 bits per channel of color: only png supports 16 (render/animate)
image filename replace palette with png, jpg, or ppm image
use_vars -1 comma sep list of variation #'s to use when generating a random flame (genome only)
dont_use_vars unset comma sep list of variation #'s to NOT use when generating a random flame. (genome only)
cross0 NA randomly select one genome from this file to genetically cross (genome only)
cross1 NA with one genome from this file (genome only)
method NA method for genetic cross: alternate, interpolate, or union. (genome only)
mutate NA randomly mutate a random genome from this file (genome only)
symmetry NA set symmetry of result. (genome only)
clone NA clone random flame in input (genome only)
clone_all NA clones all flames in file. useful for applying template to all flames (genome only)
animate NA interpolates between all flames in a file, using times specified in file (genome only)
sequence NA 360 degree rotation 'loops' times of each control point plus rotating transitions (genome only)
loops NA number of times to rotate each control point in sequence (genome only)
tries 50 number of tries to make to find a good genome. (genome only)
strip NA strip input, frame and nframes control which one. (genome only)
transparency 0 make bknd transparent, if format supports it (render/animate)
name_enable 0 use 'name' attr in to name image output if present (render only)
nick "" nickname to use in tags / img comments
url "" url to use in tags / img comments
id "" ID to use in tags / img comments
comment "" comment string for tags (genome only)
use_mem auto floating point number of bytes of memory to use (render only)
noedits unset omit edit tags from output (genome only)
write_genome 0 write out genome associated with center of motion blur window (animate only)
print_edit_depth 0 depth to truncate tag structure. 0 prints all tags (genome only)
intpalette unset round palette entries for importing into older Apophysis versions (genome only)
insert_palette unset insert the palette into the image.
enable_jpeg_comments 1 enables comments in the jpeg header (render and animate)
enable_png_comments 1 enables comments in the png header (render and animate)
earlyclip 0 enables the early clipping of rgb values for better antialiasing and resizing
defaults to 0 for backwards compatibility
flam27 0 flam3 2.7 compatibility mode; ensures generated genomes can be used by flam3 2.7.18
stagger 0 affects simultaneity of xform interpolation during genome interpolation.
represents how 'separate' the xforms are interpolated. set to 1 for each
xform to be interpolated individually, fractions control interp overlap.
apo_palette 0 set this to 1 to use only the first 255 elements of the palette (apophysis compatibility)
for example:
env dtime=5 prefix=foo. in=test.flam3 flam3-animate
means to render every 5th frame of parameter file foo.flam3, and store
the results in files named foo.XXXX.jpg.
the flam3-convert program reads from stdin the old format created by
the GIMP and writes to stdout the new xml format.
the flam3-genome program creates random parameter files. it also mutates,
rotates, and interpolates existing parameter files. for example to
create 10 wholly new control points and render them at normal quality:
env template=vidres.flam3 repeat=10 flam3-genome > new.flam3
flam3-render < new.flam3
if you left out the "template=vidres.flam3" part then the size,
quality, etc parameters would be their default (small) values. you
can set the symmetry group:
env template=vidres.flam3 symmetry=3 flam3-genome > new3.flam3
env template=vidres.flam3 symmetry=-2 flam3-genome > new-2.flam3
flam3-render < new3.flam3
flam3-render < new-2.flam3
Mutation is done by giving an input flame file to alter:
env template=vidres.flam3 flam3-genome > parent.flam3
env prefix=parent. flam3-render < parent.flam3
env template=vidres.flam3 mutate=parent.flam3 repeat=10 flam3-genome > mutation.flam3
flam3-render < mutation.flam3
Normally one wouldn't use the same file for the template and the file
to mutate. Crossover is handled similarly:
env template=vidres.flam3 flam3-genome > parent0.flam3
env prefix=parent0. flam3-render < parent0.flam3
env template=vidres.flam3 flam3-genome > parent1.flam3
env prefix=parent1. flam3-render < parent1.flam3
env template=vidres.flam3 cross0=parent0.flam3 cross1=parent1.flam3 flam3-genome > crossover.flam3
flam3-render < crossover.flam3
flam3-genome has 3 ways to produce parameter files for animation in
the style of electric sheep. the highest level and most useful from
the command line is the sequence method. it takes a collection of
control points and makes an animation that has each flame do fractal
rotation for 360 degrees, then make a smooth transition to the next.
for example:
env sequence=test.flam3 nframes=20 flam3-genome > seq.flam3
flam3-animate < seq.flam3
creates and renders a 60 frame animation. there are two flames in
test.flam3, so the animation consists three stages: the first one
rotating, then a transition, then the second one rotating. each stage
has 20 frames as specified on the command line. if you want to
render only some fraction of a whole animation file, specify the begin
and end times:
env begin=20 end=40 flam3-animate < seq.flam3
the other two methods are harder to use because they produce files that
are only good for one frame of animation. the output consists of 3
control points, one for the time requested, one before and one after.
that allows proper motion blur. for example:
env template=vidres.flam3 flam3-genome > rotme.flam3
env rotate=rotme.flam3 frame=10 nframes=20 flam3-genome > rot10.flam3
env frame=10 flam3-animate < rot10.flam3
the file rot10.flam3 specifies the animation for just one frame, in
this case 10 out of 20 frames in the complete animation. C1
continuous electric sheep genetic crossfades are created like this:
env inter=test.flam3 frame=10 nframes=20 flam3-genome > inter10.flam3
env frame=10 flam3-animate < inter10.flam3
see http://flam3.com/flame.pdf for descriptions & formulas, and
see http://electricsheep.wikispaces.com/Variations for updates.
The complete list of variations:
0. linear
1. sinusoidal
2. spherical
3. swirl
4. horseshoe
5. polar
6. handkerchief
7. heart
8. disc
9. spiral
10. hyperbolic
11. diamond
12. ex
13. julia
14. bent
15. waves
16. fisheye
17. popcorn
18. exponential
19. power
20. cosine
21. rings
22. fan
23. blob
24. pdj
25. fan2
26. rings2
27. eyefish
28. bubble
29. cylinder
30. perspective
31. noise
32. julian
33. juliascope
34. blur
35. gaussian_blur
36. radial_blur
37. pie
38. ngon
39. curl
40. rectangles
41. arch
42. tangent
43. square
44. rays
45. blade
46. secant2
47. twintrian
48. cross
49. disc2
50. super_shape
51. flower
52. conic
53. parabola
54. bent2
55. bipolar
56. boarders
57. butterfly
58. cell
59. cpow
60. curve
61. edisc
62. elliptic
63. escher
64. foci
65. lazysusan
66. loonie
67. pre_blur
68. modulus
69. oscilloscope
70. polar2
71. popcorn2
72. scry
73. separation
74. split
75. splits
76. stripes
77. wedge
78. wedge_julia
79. wedge_sph
80. whorl
81. waves2
82. exp
83. log
84. sin
85. cos
86. tan
87. sec
88. csc
89. cot
90. sinh
91. cosh
92. tanh
93. sech
94. csch
95. coth
96. auger
97. flux
see http://flam3.com/flame.pdf for descriptions & formulas for each of
these. note that, by default, if a random flame is requested and neither
'use_vars' or 'dont_use_vars' are specified, the following variations are
not used: noise, blur, gaussian_blur, radial_blur, ngon, square, rays,
and cross.
note: these variations do not use the variation weight to scale their
contributions, and so will not be implemented in flam3:
circlize
======================================
todo: eliminate all static storage.
======================================
changelog:
5/17/15 Added hsv_circular and hsv_rgb_palette_blend. Improved
edit history of genetic algorithm (keep track of generation).
Add find_parents operator to flam3-genome. Release as 3.1.1.
12/29/10 Added --version option to flam3-genome. fixed bug in 16 bpc
png image writing when using strips. xform opacity now affects
calculated width of density estimation filters. Release as 3.0.1.
10/05/10 Small tweaks. Fuse iterations default to 15 but increase to
100 when using earlyclip. flux variation added. Release as 3.0.
12/20/09 Highlight power now interpolates smoothly from old behavior
(-1) to new behavior. flam3-genome 'split' mode was broken, fixed
(thanks Exper.) Die gracefully instead of segfault when very small
estimator_curve values are specified. Version attribute added to
flame tag. Number of iterations used to fuse attractor increased to
100. Release as 2.8beta7.
11/24/09 Potential speedup of 5% over prior versions. Many threading
issues identified and resolved when using flam3 shared library as
back end for user interfaces. 14 complex plane variations added.
auger variation added. new flam3_make_strip library function to
generate stripped genomes for external ui strip renders. bug fix:
when rendering strips, use the same random context for each strip
to prevent edge effects where strips butt against each other. flam3
will now linearly interpolate missing colors in the colormap.
Release as 2.8beta6.
10/16/09 Non-threadsafe progress tracking code in main iteration thread
replaced with per-render progress storage. Fixed bug where pausing
render during density estimation stage terminated render. Waves2
variation fixed (thx Joel F). Release as 2.8beta5.
10/07/09 Fixed bug affecting 'animate' mode with flam3-genome. Changed
estimate_bounding_box to increase discarded iterations if numerous
badvals were encountered during iterations. Exported a few more
functions for Windows DLL. Release as 2.8beta4.
10/03/09 Changed color_speed range from 0 (no color change) to 1
(use new xform color). Animate attribute is now 0 for no motion,
1 for motion. Removed final xform from stagger algorithm. 'oscope'
parameters are now called 'oscilloscope' to match the rest of the
parametric variations (backwards compatible, so old genomes can be
read.) Stagger now affects morphing as well as sheep rotation, but
only using flam3-genome (not flam3-animate). Release as 2.8beta3.
03/18/09 Major upgrade :
- 28 variations added, mostly from the sourceforge plugins pack
- significant speed optimization of variations
- setting earlyclip env var on commandline will enable an alternate
calculation of color values, resulting in better antialiasing
- 'highlight_power' flame element controls the white highlights in
dense areas, eliminating the hue shift bug
- Apophysis chaos and solo xform/plotmode features have been
implemented. solo/plotmode are promoted to floating point
'opacity'. opacity and chaos are both interpolatable.
- tag now available for xforms...allows cyclic variation
of any regular xform parameter/coef/post.
- env var 'stagger' affects the simultaneity of xform interpolation
when morphing from one flame to another. set to 0 for existing
behaviour, set to 1 to make each xform interpolate individually
- symmetry has been broken out into color_speed and animate tags
with the same sense (which is confusing and will be fixed in a
future release).
- set the flam27 env var to output backwards compatible genomes
(when possible.)
- passes the consistency test where rendering an image at double
size and filtering it down produces the same results as the
original (modulo quality).
03/17/09 Added fuzz testing with zzuf to the regression tests. 'Strip'
mode and genomes with the zoom parameter used now break into pieces
properly. insert_palette fixed (broken a few versions ago.) fixed
twintrian variation when small weights are used. various rare
segfaults and memory leaks fixed. 'palette_mode' attribute added to
flame element for smoother palette interpolation in slow animations;
possible values are 'step' and 'linear' ('step' mode is default and
matches previous behaviour.) Release as 2.7.18.
11/11/08 Add error checking on the numbers in the input genome. Do
not exit on read errors, fail gracefully. Changed sin/cos = tan in
the tangent variation. Added polar to list of variations that use
the inverted linear identity. Bugfix: temporal_filter_exp was not
set properly in template. Apply interpolation attribute in
templates. Add/publish datarootdir with pkg-config so the palette
file is easy to find (for qosmic). Copyright by Spotworks LLC
instead of Spot and Erik. Add fuzz checks to the regression
suite. include LNX/OSX/WIN in the version string. In
flam3-genome animate command, added one to last flame time, so the
end time is inclusive. Release as 2.7.17.
09/06/08 Added 'clone_all' to flam3_genome to allow application of
template to all flames in a file at once, and 'animate' to write
a full sequence of interpolations out. 'animate' is similar to
'sequence' except that no control point rotation is performed.
Fixed non-functional 'write_genome' env var for flam3_animate.
Two bugs associated with interpolating from a log interpolation_type
to a non-log interpolation_type fixed (rotate angle reduction and
special inverted identity). when using flam3_rotate in 'spin_inter'
the interp type of the first genome is now used rather than the
current genome's interp type. Enforced upper and lower bounds for
xform color and upper bound for interpolated colormap values
as "smooth" interpolation led to values out of range. If "smooth"
interpolation is specified for all flames in a file, the first and
second-to-last genome is switched to "linear" with a warning.
spatial filters with non-box-filter window functions fixed.
Release as 2.7.16.
08/25/08 Added new interpolation types 'old' and 'older', for use in
recreating old animations. 'linear' mode now does not rotate padded
xforms (results in prettier symmetric singularities). switched to
using a 'padding' flag instead of a 'just initialized' flag; padding
flag used for implementation of 'old' and 'older' types.
interpolation_space now deprecated, instead use interpolation_type.
flam3_align is now idempotent (multiple applications do not change
the control points.) Default number of temporal samples bumped to
1000. Removed CVS headers from source code (now using SVN).
Default interpolation mode now log. Removed 'move' and 'split' vars.
changes to flam3-genome: sequence mode now returns linear
interpolation mode for all control points except first/last of edges
- these cps will use the original interpolation mode; inter and
rotate modes will now return padded genomes for all control points,
all with linear interpolation specified. instead of centering
sometimes reframe by golden mean plus noise. Release as 2.7.15.
07/21/08 Add configuration option for atomic-ops. bug fix: do not
truncate floating point palettes. new motion blur features: add
temporal_filter_type, can be "box" (default) or "gaussian" or
"exp". Temporal_filter_width and temporal_filter_exp are parms to
it. 'blur' env var no longer used. Small bug fix: iteration
count depends only on the size of the output image, not the padded
image (the gutter). When interpolating, only do -pi/pi adjustment
for non-asymmetric cases. Julian/juliascope variations use the
alternate inverted identity for interpolation (reduces wedge
effect). Add python script for regression and consistency
checking. Add svn revision number to version string (in the
software not of the package). Release as 2.7.14.
05/28/08 Restored upper limit on particle coordinates. Release as
2.7.13.
05/16/08 Added man pages. Removed upper limit on particle
coordinates. fixed FSF address in comments. update to automake
1.10.1. added eps to denom of perspective fraction to avoid
infinities (thanks fred). Put contents of 'id' env var in png/jpg
comment block. Release as 2.7.12.
04/05/08 Added 16 bit per channel support to PNG via bpc envar.
isaac.h is now installed with the flam3 headers. Strip indexing
now done with size_t's to fix bug in large images (thanks Paul).
Progress callback now returns ETA, and per-thread verbose flag
functionality fixed. Enumerated spatial filter types now used in
flam3.h, taking the place of function pointers (simplifies the
API). Fix bug by moving precalculation of variation variables to
flam3_iterate (thanks david). Release as 2.7.11.
03/15/08 fixed interpolation bug when magnitude of rotation/scaling
component of affine transform is 0. replaced secant variation
with more flame-friendly secant2 (eliminates gap in y direction,
scales y-coordinate by weight). warning message now printed when
unrecognized variation is present in an xform. fixed bad
inequality when checking for -pi/pi discontinuity during complex
interpolation. release as 2.7.10.
02/08/08 non-zero weights for final xforms no longer allowed, and now
have no effect. recompiled windows exes with mingw gcc 4.1 to
take advantage of scalability improvements in flam3 2.7.8 (was
compiling with mingw gcc 3.4 until now). for fedora package
compliance, flam3.pc.in patched by ian weller and moved use of
config.h to c files only. release as 2.7.9.
01/26/08 better scalability across multiple CPUs by using compare and
swap (from Tim Hockin). fix bug in large images (>2GB). add
flam3_srandom and flam3_malloc/free to better support wrapping
with python on windows, which links with a different C
runtime. add --enable-shared option to configure script (from
Bobby R Ward). release as 2.7.8.
12/16/07 fixed bug (rare random crash) identified by david burnett.
initialize new xforms with better defaults for parametric
variations (based on interpolated-against xforms). add id envar,
like nick/url. add clone_action envar. return to xform
interpolation based on complex logs, but make consistent decisions
about counter/clockwise rotation across the sheep edges.
interpolation_space attribute to flame element can be set to
"linear" to go back to the simpler method, or "log" to use this
new (default) method. release as 2.7.7
10/20/07 fixed action string overflow when many xforms are present.
added 'print_edit_depth' env var to control how many levels of
tags are saved when using flam3-genome. Fixed wrong
placement of random improve_colors code in flam3-genome. go to
five digit filenames. fixed bug in supershape variation. API
cleanup, thanks to david bitseff. release 2.7.6.
08/14/07 various code updates to assist with compiling under msvc++.
now can specify --disable-pthread or --enable-pthread to configure
to better control compilation. fixed bug preventing renders of
flames with more than 128 xforms. release 2.7.5.
07/12/07 fixed bug in split variation, now compatible with both
versions of Apo. added insert_palette option. switched density
estimation kernel from Epanichnikov to Gaussian. genetic cross
now crosses palettes rather than selecting one of the parent
palettes. remove noisy variations from random generation if
use_vars or dont_use_vars not specified. fixed metrics calculated
on small test render for genetic operations. reduced memory
requirements for density estimation filters. 64-bit linux distros
now supported. release 2.7.4.
06/21/07 flam3 version, rendered genome, some render statistics and
optionally nick/url stored in jpeg/png headers. fixed two bugs
in isaac rng code (strongly affected temporal blur). prevent
final xform rotation for sheep animation. fixed interpolation
when only one flame has final xform. added Supershape, Flower,
Conic, Parabola, Move and Split variations. Shape combined with
Supershape via 'rnd' parameter. flam3-genome now writes 'name'
attribute for rotate and sequence modes. oversample attribute
deprecated; supersample now preferred. new build process for
windows exes using MinGW/MSYS. added 'intpalette' env var to
round floating point palettes to allow older versions of Apophysis
to read them. default image type is now PNG, transparency off.
density estimation code revised to be more consistent between
different supersample levels, which required change to default
de params. limit number of de filters to conserve memory. fixed
julia variation dependency on non-thread-safe random bit function.
removed random number storage for radial blur variation.
release 2.7.3.
07/26/08: Note, incompat. change made to direction of cp->rotate
(as of 2.7.3, rotates shortest distance instead of clockwise)
02/09/07 use isaac random number generator to avoid differences
between mac/pc/linux. use multiple threads to take advantage
of multiple CPUs or cores. new variations: disc2, Arch,
Tangent, Square, Rays, Blade, Secant, Twintrian, Cross.
fixed bug reading hex color format - must remove \n prior to
start of colors if present. use EPS in spiral, hyperbolic
and spherical to eliminate black spots. fix numbering of
disc2, change parameter to estimate_bounding_box. made blur
kernel type templatable. removed extraneous 'enabled="1"' in
writing out final xform information (no longer needed).
release 2.7.2.
12/31/06 fixed bug in waves precalculation code. curl and rectangles
variations from joel faber. remove visibility of
rotation_center attribute, fix strips operator to handle
rotation without it. added motion exponent and gamma lin
thresh to flam3_print. list of variations in the docstring
automatically generated. flam3-genome: envar noedits
suppresses output of edit history. release 2.7.1.
09/27/06 print out palette as floating point with up to 6 digits
rather than integers (for very slow smooth transitions).
Added optimization to only recalculate the xform distrib
array when necessary (Thanks Joel Faber). Added settable
kernel for downrez. Added XML reading code for new
format for gradients. Functionalized hex gradient read.
Removed color shift experimental feature. New
'motion_exponent' attribute controls fade of temporal steps.
added gaussian_blur and radial_blur vars from apo. added pie
and ngon variations from joel faber. add rotation_center
attribute. added but disabled image variation from joel.
release as 2.7.
06/26/06 use new libpng api, handle libpng errors properly (from nix
at esperi.org.uk). print out palette as floating point with
6 digits rather than integers (for very slow smooth
transitions).
06/11/06 disable density estimation for 16 and 32 bit buffers because
it doesn't work. Apo team removed "enabled" from final xform
specification, so now it defaults to on. make default
temporal samples be 60 so that motion blur is the default,
but explicitly ignore temporal samples when rendering still
frames. add strip genetic operator to flam3-genome for
breaking a flame into strips for parallel rendering. add
subpixel offsets for antialiasing by averaging multiple
images. release as 2.7b8.
05/25/06 change attribute name "batches" to "passes" because many old
genomes have it set, and with density estimation it is
harmful.
04/28/06 remove debugging code, release as 2.7b7.
04/28/06 add attribute interpolation="smooth" for catmull-rom
interpolation. known bug: some frames come out dark.
release as 2.7b6.
04/15/06 rename XML attribute "estimator" to "estimator_radius". fix
the progress callback. add use_mem envar. move palette
database to external file. cleanup namespace. add new
variations blur, julian, and juliascope. fix flam3-convert.
add experimental color shifting via "shift" envar. supports
finalxform. can read hex palette format. avoids the "square"
that appears from NaNs. release as 2.7b5.
01/11/06 unlimited number of xforms per flame. new variations
cylinder and perspective. rename rename de_max_filter to
estimator, de_min_filter to estimator_minimum, de_alpha
to estimator_curve, and jitters to temporal_samples.
release as 2.7b4.
11/28/05 performance optimization, fix symmetry singularities, added
bubble variation, fixed handkerchief variation, templates
apply to sequence and rotate flam3-genome commands, added
envar "name_enable" to render filenames specified in the
"name" attribute of the flame element, small bugfixes,
release as 2.7b3.
11/04/05 verbose on by default. Added 'transparency' envar for png
renders without transparency channel. Fixed non-black
background jpeg renders. add improve_colors mutation,
rewrite most of estimate_bounding_box. added new variations
blob pdjd fan2 rings2 eyefish. added '33bit' method for
32-bit floats. tags track history. alter the gamma
curve to be linear near 0 to avoid singularity and reduce
noise, set with gamma_threshold. release as v2.7b2.
09/24/05 new density estimator and temporal jitter code from Erik
Reckase (note removal of todo items above :). allow gamma,
vibrancy, contrast, pixels_per_unit, and brightness to vary
as part of the genome rather than as part of the rendering
parameters. flam3-genome does not retry when cloning. ditch
2nd color coordinates. release as v2.7b1.
06/27/05 in flam3_dimension, give up and return NaN if 90% or more of
the samples are being clipped. release v2.6.
06/22/05 add envar to control the number of tries.
06/06/05 add new form of mutation that introduces post xforms.
05/20/05 fix memory trashing bug resulting from xform overflow. put
regular xforms before symmetry in printed genomes. enforce
weights non-negative & at least one xform. remove
nan-protection from popcorn variation. truncate xforms with
very small weight.
05/13/05 fix bug reported by erik reckase where fan variation could
blow up to NaN because the domain of atan2 was not protected.
remove protection from all atan2 calls and instead detect NaN
results and replace them with noise. count really large
values as bad too to prevent blowing up to infinity. enforce
0<=hue<1, release v2.6b1.
05/05/05 report choices made during genome generation in notes
attribute. flam3_dimension no longer hangs when most of the
attractor is outside the camera. limit number of variations
produced by genetic operators to 5. reduce rate of
interpolation method of crossover.
03/17/05 put cloning back in (found by James Rantanen).
03/08/05 change sawtooth variation (incompatible!). add fan
variation. rename sawtooth to rings. release as v2.5.
03/01/05 fix rotation when nstrips > 1. add flam3_dimension(). minor
bugfixes. release as v2.4.
01/25/05 release as v2.3.
01/18/05 support post xforms (idea from eric nguyen). support camera
rotation.
12/28/04 release as v2.2.
12/27/04 preview implementation of image fractalization by adding a
color coordinate. changed how random/default color
coordinates are selected (they alternate 0 and 1 instead of
being distributed between 0 and 1). WARNING: incompatible
format change to samples argument of flam3_iterate.
12/20/04 allow mutation and crossover from files with multiple
genomes. a random genome is selected for each repetition.
12/11/04 fix bug printing out interpolated non-built-in palettes.
warn if any images sizes in animation do not match.
12/01/04 remove debugging code left in flam3-convert, thanks to Paul
Fishwick for reporting this. add cosine variation. add
sawtooth variation. handle nstrips that do not divide the
height. write partial results as strips are computed. fix
old bug where in 32 bit mode one of the terms appeared to be
calculated at 16 bits. release as v2.1.
10/28/04 fix docstring bug. release as v2.0.1.
10/28/04 renaming, cleanup, and modularization. now exports
libflam3.a and flam3.h, all names prefixed with flam3_.
binaries named with flam3- prefix, genome files use flam3
suffix. create and install a flam3.pc pkg-config file.
release as v2.0.
09/21/04 fix bug where code for integer rounding was left in 64-bit
floating point version. round remaining time up so we do not
say ETA in 0 seconds. do not use static allocation to hold
onto memory, just malloc and free what we need every frame.
enforce positive oversampling. fix bug in hqi on sequences
of images of different sizes. release as v1.15.
09/17/04 change name of envar to control jpeg compression quality from
"quality" to "jpeg". check for bad nbatches values. release
as v1.14.
08/23/04 add about 600 cmaps from Jackie, Pat Phillips, Classylady,
and BTomchek. use 64-bit (double) sized buffers. remove
white_level. add new variations: exponential & power. fix
bug where hue_rotation was left uninitialized. add clone
option to pick-flame which just applies template to the input
without modifying genome. random_control_point can now put
multiple variations in one xform. remove altivec code because
it is incompatible with 64-bit buffers. verbose (progress bar
on stderr) from Jon Morton. control random number seeds via
seed envar. support buffer sizes 16, 32, or 64 bits with
three versions of rect.c included into libifs.c.
03/28/04 fix bug interpolating between flames with different numbers
of xforms introduced by the new de/parsing. add modified
version of the popcorn variation from apophysis. fix small
bug in waves variation. make distribution of variations
even. add altivec code from R.J. Berry of warwick.ac.uk.
release as v1.13.
03/26/04 add wave variation. allow negative variational coefs. do
not truncate filter width to an integer. add fisheye
variation. make variations print by name instead of using a
vector, that is say spherical="1" instead of var="0 0 1" or
var1="2". it should still read the old format.
03/07/04 fix bug printing out result of interpolating between
symmetries. release as v1.11.
03/03/04 add new means of crossover: a random point between the
parents as defined by linear interpolation. in all kinds of
crossover, reset the color coordinates to make sure they are
spread out well. somehow lost part of the extra_attributes
patch, so put it in again. add pixel_aspect_ratio envar.
decrease filter cutoff threshold. the edges of the filter
were almost zeros, so making the filter smaller saves time
with almost no effect on the results. do not print out the
attributes of control points that have default values.
release as v1.10.
02/26/04 remove prefix argument to print_control_point, and add
extra_attributes. allow any value for vibrancy parameter.
allow variation blending coefs to have any values. do not
normalize them. on windows nstrips is computated
automatically to fit within memory (leaves at least 20%
unused). support png image format and if output is png then
compute & output alpha channel. release as v1.9.
02/01/04 add julia variation, and put bent variation back in. change
how colors are computed in presense of symmetry: xforms that
come from a symmetry do not change the color index. this
prevents the colors from washing out. since an xform may be
interpolated between a symmetry and not, this this is a
blending factor. add more documentation. add function to
compute lyapunov coefs. allow control over symmetries
produced by pick-flame. release as v1.8.
07/20/03 cleanup, update documentation, release as v1.7.
07/15/03 fix bug in interpolation where in last frame when going from
non-symmetric to symmetric it left out some xforms. drop
support for "cmap_inter". add var1 as a abbreviation to var
in xml output, and do not print trailing 0s in var string.
07/09/03 change matrix interpolation to be linear rather than complex
log to avoid the discontinuity at 180 degrees. this was
causing jumpiness in the C1 continuous algorithm. this means
that rotation has to be handled with pick-flame. put direct
support for symmetries in the de/parser to make control
points smaller and easier to understand. support
combinations of bilateral & rotational symmetry.
06/22/03 bug in colormap interpolation. release as v1.6.
06/20/03 fix some bugs, in particular remove sorting of the xforms
when control points are read. they are only sorted when they
are generated. updated dates on copyright notices. added
time parameter to anim, shorthand for begin & end being the
same. added a fairly terrible hack to allow palettes to be
specified as blending of two basic palettes. this requires
much less bandwidth than sending 256 rgb triples. in
pick-flame change default to be enclosed xml output.
06/09/03 add C1 continuous interpolation to pick-flame (suggested by
Cassidy Curtis). added new variations from Ultra Fractal
version by Mark Townsend. added symmetry xforms.
06/02/03 add convert-flame which reads the old file format and writes
the new one. release as v1.5.
03/22/03 fix bug in hqi & anim. somewhere along the way (prolly jpeg)
nstrips was broken. add qs and ss params to hqi.
discontinue strips for anim because the implementation is a
bit problematic (animating zoom??). bump version to 1.4.
03/05/03 add pick-flame.c to the project, and extend it with mutation
and crossover capability. add parse_control_points_from_file
(and use it). rename non-xml variants of de/parsers to *_old
and rename xml variants to remove _xml. add
rotate_control_point. bump version to 1.3.
02/10/03 increase CHOOSE_XFORM_GRAIN by 10x and use chars instead of
ints. remove extra -ljpeg from Makefile. lose hack that
ignored density xforms after interpolation. what was that
for?? it makes a difference, and just makes interpolation
less smooth as far as i can tell. bump version to 1.2.
01/17/03 release as v1.1.
01/16/03 support output in jpeg format; this is the default. support
win32.
01/08/03 by default don't render the last frame so that animations
dove-tail and loop
01/06/03 fix how too many xforms are detected so that one more xform
is allowed.
12/22/02 first release as independent package. release as v1.0.