ChangeLog

2020-03-17  tobias  <tobias@adrenochrom>

	* readme.org (Library Compilations): for compileing libobvius i removed libtiff dependencies from the compiling processes,

2020-03-06  tobias  <tobias@adrenochrom>

	* generate_obv_lib.lisp: libobvius will be either built on load or
	                         downloaded

2020-02-06  tobias  <tobias@adrenochrom>

	* readme.org (Intro): complete new build system for obvlib based on cmake

2020-01-30  tobias  <tobias@adrenochrom>

	* c-source/CMakeLists.txt: added CMakeLists.txt to build with cmake

2020-01-22  THO  <tobias@adrenochrom>

	* Reorganized into github
	* Added new graphical Backend with nuklear.h and glfw

Mon May 30 16:27:20 1994  David Heeger  (heeger at white)

	* Add make-inverse-discrete-function, that takes a df as input and
	produces the inverse function after checking that the input is
	monotonic-increasing.

	* Added verify-monotone-increasing as a method on arrays (got rid
	of the function version from gamma.lisp).

Mon May 23 17:44:48 1994  David Heeger  (heeger at violet)

	* Added mul methods on complex-image and complex-number

Tue Mar 29 22:58:22 1994  David Heeger  (heeger@violet)

* Fixed bug in singular-p.

* Changed make-quadrature-steerable-basis to make complex-images
rather than image-pairs.

Tue Mar 29 11:40:43 1994  Eduardo-Jose Chichilnisky  (ej at red)

	* Fixed SVD to only warn (rather than return NIL) when Linpack's
	C code complains. This was due to a case I found when Linpack's
	code returns something slightly wrong, but it seemed better to
	warn than to cause a crash by returning NIL.
	* Fixed minimum and maximum on lists to return positions, like
	array methods. Added minimum-location and maximum-location on lists.

Sat Mar 26 12:40:18 1994  David Heeger  (heeger@violet)

* Fixed bugs in col-space, row-space, col-null-space, row-null-space
in svd.lisp.

Fri Mar 25 15:43:49 1994  David Heeger  (heeger@violet)

* Added scatter-frob viewable and make-scatter methods to
drawing.lisp.  This used to be defined in
tutorials/psychophysics/scatter.

* Added cumulative-normal and inverse-detection-normal to
statistics.lisp.  This used to be defined in
tutorials/psychophysics/stuff.

* Added multiple-sort methods to misc.lisp.  This used to be defined
in tutorials/psychophysics/stuff.

Thu Mar 24 13:42:39 1994  David Heeger  (heeger@violet)

* Added internal8_circular_shift imops.c, lisp definition in
  lucid-ffi.lisp, and call it from circular-shift in array-ops.lisp

Mon Mar 12 09:10:54 1994  Eero Simoncelli  (eero at blue)

	* Finished porting steerable pyramids.  Includes new filters,
	  slightly modified circuit diagram.
	* Added llse-filter-design.lisp: code to do weighted least-squares
	  filter design.

Wed Feb 16 11:56:41 1994  David Heeger  (heeger at violet)

	* Copied C source back to Sun from the Mac.  Here's what's been
	added on the Mac and/or changed on both:

	chartohex: 
	- get rid of the <unistd.h>, include obv.h instead

	obv.h: added to deal with machine dependencies
	- reference to pi needs to depend on machine (ifdef MPW or whatever)
	- need to put this file on the sun
	- included obv.h in fft.c, imops.c, matrix.c, chartohex.c
	- #include<String.h> for memset(), needed for imops.c
	- #include<StdLib.h> for rand(), needed for imops.c
	- #include<StdIO.h> for fprintf() , needed for imops.c
	- conditional include of <FCntl.h> on mac (something else for SUN)
	  to deal with lseek() in chartohex.c

	mpw-hacks.c: added to take care of C functions missing on the Mac

	MakeFile-mac:
	- inserted compiler option -d float=double to make all floats be double.
	  This appears to work, at least tested with matrix.c (internal-dot-product)
	- tiff-access.c causes an undefined TiffPrintDirectory; so we left it out
	- This file MUST be renamed MakeFile before compiling in MPW.

Wed Feb 16 11:56:41 1994  David Heeger  (heeger at violet)

	* Moved lucid-window-init.lisp, lucid-obvius-init.lisp,
	mcl-window-init.lisp, and mcl-obvius-init.lisp into <obv> 
	directory.  This makes it easier to copy new versions to the mac.
	Each time a new version is copied, need to update/reconstruct:
	mcl-window-init, mcl-obvius-init, mcl-site-init, and
	mcl-site-paths.  At least these four files are now all in the same
	directory.

Wed Feb 16 11:56:41 1994  David Heeger  (heeger at violet)

   * Notes about mcl-*.lisp files:

	mcl-defsys.lisp:
	- Copy and Paste are taken by CCL. We unintern and unexport them in
	  mcl-defsys.lisp
	- Use clos as a nickname for ccl package.  Every reference to clos
	  package must have a double colon.
	
	mcl-clos-extensions.lisp:
	- Had to define the following functions because MCL 2.0 doesn't
	  support everything they should (see p. 608 of MCL docs):
	    slot-definition-initform
	    slot-definition-initargs
	    class-default-initargs
	  These definitions are unsupported hacks.  Worry about this
	  for future releases of MCL.
	- Changed (nth 2 thing) to (nth 1 thing) in get-default and in 
	  get-defaults because lucid's initargs are triplets whereas
	  MCL's initargs are pairs (at least for the time being, note
	  that slot-definition-initargs is one of the above hacks).
	- Changed set-default, dumped initfunction since it's not used in MCL.
	  There are 3 cases.  (1) If it's an initarg, change the initarg.
	  (2) If it's a direct slot, change the initform in the slot.  (3)
	  If it's an inhertited slot, add an initarg.  Couldn't figure out
	  how to implement the 2nd case, so came up with a ***hack*** for the
	  time being; we simply add an initarg (i.e., treat case 2 the same
	  as case 3).  This works fine but... Eero can fix it later.

	mcl-screen.lisp (modified from lv-screen):
	- Not dealing with blting yet, so I didn't deal with find-color and
	  registered colors.  Color maps don't appear to be supported by MCL.
	  This is going to be a bit of a hassle.
	- mcl-screen object (modified from 8bit-X-screen).
	- color slots in mcl-screen object and in picture objects must be
	  either color name keywords like :black or triplets of floats between
	  0 and 1.  For now, I left it the :type spec in the defclass t (i.e., 
	  no error checking on the type for the time being).
	- Wrote convert methods that convert rgb-list to and from
	  encoded color fixnums.
	- setf background: didn't bother setting background of control panel
	  because I'm not sure we're going to have one.
	- There are a bunch of functions and methods that I left out
	  until we figure out how to deal with color maps:
	      destroy method on screen
	      set-gray-lut
      	      set-color-lut
              allocate-pseudo-colors
	- Decided that default background is :white.  So needed to change default
	  foreground of all drawing picture types to be :black.  For now, put 
	  lots of set-defaults in mcl-obvius-init.lisp

	mcl-window.lisp:
	- foreground slot needed to restore fore-color after drawing routines
	  like: draw-lines, draw-circles, etc.
	- no background slot in the pane.  Get background color from screen.
	- take another look at the various methods for destroying a pane
	  including: destroy methods (in mcl-window and pane.lisp),
	  ccl::window-close (in mcl-window), and (setf (status pane) :destroyed)
	  in mcl-window.
	- view-draw-contents still needs work (look at comment above defmethod).
	  Works fine when window is selected, but wrong behavior when window
	  is resized.

Wed Feb 16 11:56:41 1994  David Heeger  (heeger at violet)

   * Changes needed for consistency in mcl and lucid lisp-source:

	image.lisp:
	- Moved definitions of *max-print-vals* *y-print-range* and
	  *x-print-range* to array-ops.

	viewable.lisp:
	- In mcl, exporting name from obvius conflicts with symbol already present
	  in cl-user. Removed export of symbol 'name, because we could not 
	  understand or avoid the apparent conflict with a symbol in cl-user.
	- Function set already defined in CCL kernel.  
	  Added (fmakunbound 'set) above set redefinition.

	picture.lisp
	- reset-picture-defaults: added &allow-other-keys to arglist.
	  The goal was to have all methods inherit this feature; seems to work.

	list-ops.lisp
	- added (fmakunbound 'union) above union redefinition

	fileio.lisp
	- Wrote mcl specific versions of: directory-p,
	  trim-right-delimiter, and directory-path.  Moved these to
	  mcl-hacks and lucid-hacks.

	synth.lisp
	- patched make-uniform-noise, mod seed against most-positive-fixnum
	  without this, seed was sometimes a bignum which busted ff call.

Tue Feb  1 10:12:29 1994  Eduardo-Jose Chichilnisky  (ej at gold)

	* Replaced statistics.lisp and numerical-recipes.lisp. The latter
	now implements the needed NR routines in Lisp, rather than linking
	C code. The former is cleaned up and calls those NR routines. Also
	removed ff calls from lucid-ffi.lisp.  And updated installation
	instructions.

Fri Jan 14 14:18:25 1994  Eduardo-Jose Chichilnisky  (ej at gold)

	* Patched vectorize, which (amazingly) had a bug with using one of
	its keyword args.

Tue Nov 30 17:35:15 1993  David Heeger  (heeger at violet)

	* Fixed polar-to-complex in image-pair.lisp.  Used to call sin.
	and cos., but these macros are not defined when this file gets
	compiled.  Changed it to make calls directly to
	periodic-point-operation.

Wed Sep 22 11:41:58 1993  Eduardo-Jose Chichilnisky  (ej at magenta)

	* Fixed condition-number bug in svd. (was returning (sqrt (/ sn s1)),
	now returns (/ s1 sn) (Gill, Murray, & Wright, p 57). Also fixed 
	:condition-number-limit keyword in matrix-inverse to correspond.

Mon Sep  6 11:50:23 1993  David Heeger  (heeger at violet)

	* Fixed copy-object on overlays.  Had a serious bug that was
	causing Obvius to crash.  Also made minor changes to hardcopy
	function to pass several args (:system-dependent-frob, :current)
	to copy-object, rather than setting them after the copy-object.

Wed Sep  1 14:12:23 1993  David Heeger  (heeger at violet)

	* Took out the following line from the hardcopy function.  
	
        (unless (getf keys :zoom) (setf (getf keys :zoom) :auto))

	This was busting hardcopies of overlayed polar-plots.  Also, it's
	been bothering me for a long time and I'm certain it is wrong.  We
	want hardcopy to be more or less wysiwyg, i.e., it should take the
	zoom parameter from the existing picture.  With this line in
	there, it was over-riding the zoom parameter and always using
	:auto.

	If we decide to put it back, it was right after the remf keys lines.

Thu Aug 26 14:44:01 1993  David Heeger  (heeger at violet)

	* Overlay: Added code and fixed a bug to allow overlays of
	polar-plots. 

Tue Jul 27 10:34:37 1993  David Heeger  (heeger at violet)

	* Changed save-image to return full directory path instead of nil.

Wed Jul 21 15:20:13 1993  David Heeger  (heeger at violet)

	* Fixed (factor) in misc.lisp. The loop macro had a non-portable
	syntax error "return num" that worked in lucid but crashes in MCL.

Sun Jun 27 15:31:31 1993  David Heeger  (heeger at violet)

	* Changed fft on discrete-functions to be more efficient: don't
	allocate new dfs if result df is passed.

	* Added pseudo-color and true-color picture types.

	* Added suppress-error keyword so that purge! will do its thing
	without stopping for continuable errors.  Had to make minor
	changes to destroy (on viewables), notify-of-inferior-,
	notify-of-superior-, and purge!

Sun Jun 27 08:17:53 1993  Eduardo-Jose Chichilnisky  (ej at red)

	* Slightly Enhanced col, cols, (randomize arr num), (similar cons). 
	Fixed regress, which depended on bug in (col).
	Fixed small bugs in identity-p, (matrix-inverse arr).
	Speeded up matrix-trace.
	Used patch-1.lisp for all but matrix-inverse, col, cols (in modules).

Fri Apr  2 14:53:14 1993  Eero Simoncelli  (eero@tarpon.cis.upenn.edu)

	* Wrote plist-difference (like set-differnece, for plists) in 
	lucid-clos-extensions.lisp.
	* Fixed some bugs reset-picture-defaults on flipbooks/overlays.
	* Added &allow-other-keys to reinitialize-instance on pictures.

Thu Mar 11 14:55:56 1993  Eero Simoncelli  (eero@tarpon.cis.upenn.edu)

	* Ported qmf-pyramid.lisp (inherits from new pyramid class)
	* Modified Laplacian and Gaussian pyramids to inherit from pyramid.
	* Ported steer.lisp, steer-orient.lisp, steer-pyramid.lisp (w/Heeger)

	* made a lucid-site-paths.lisp.penn
	* made a make-world.penn
	* added ".mbin" for *binary-file-suffix* (fixed at stanford, too)
	* incorporated umask stuff/optimize-clos stuff from obvius-2.2/lucid-defsys
	
	* TRIED WITH LUCID-4.1:  Had to fix all lambda lists:
	  - commented out definition of symbol-macrolet in lucid-hacks.lisp
	  - added &allow-other-keys to definition of similar in array-ops.lisp
	  - added &allow-other-keys and :zero-val key to natural-log in list-ops.lisp
	  - added &allow-other-keys to defs of div in list-ops.lisp and viewable-matrix.lisp
	  - added &allow-other-keys to defs of gauss-out, gauss-in in viewable-matrix.lisp
	  - added &allow-other-keys to defs of point-operation, hilbert-transform
	    in discrete-function.lisp
	  - used &rest to  in (apply-filter thing filter).
	  - added &allow-other-keys to (div polar-im polar-im) in image-pair.lisp

Wed Feb 10 17:58:27 1993  David Heeger  (heeger at blue)

	* Changed make-synthetic-image to be a method.  When the first arg
	is a list, operates as before.  When the first arg is a number,
	makes a one-d-image of that size and the function takes only one
	variable (x).

	* Fixed paste on vectors (in array-ops) so that it works for
	one-d-images as well.  Did similar hack to fix correlate (also in
	array-ops).

Wed Feb  3 13:53:55 1993  David Heeger  (heeger at blue)

	* Incorporated obvius-2.2 patches into obvius-3.0.  Lots of misc
	things.  Important ones include: fix to viewable-matrix macros
	(patch-2.lisp); fixes to set-not-current (patch-7.lisp); various
	fixes to viewable-sequences.  It looks like matrix-mul etc methods 
	in patch-4.lisp were already incorporated.

	* Copied over steerable filters code from obvius-2.2 (not tested 
	yet).

	* Copied over user-macros.lisp from obvius-2.2.

Tue Dec 29 09:55:00 1992  Eduardo-Jose Chichilnisky  (ej at violet)

	* Added almost-zero. Fixed non-float handling bug in negate.
	Added suppress-warning to natural-logarithm. Added logarithm.
	Added (paste vec vec) method. Improved efficiency of 
	paste-rows, paste-cols. Gave vectorize and columnize
	modern x and y keywords. Added random-row and random-rows.
	Fixed bug in non-float behavior of product-of, and sped up.
	Allowed scatter-plot to use arrays (used to only handle vectors).
	Added logistic and inverse-logistic methods. Added sgn, half-square.
	Made coerce-to-float much more efficient. Added internal_cieluv
	and internal_cielab and added color.c to C libraries. 
	Interface functions too. Lisp code that uses these not yet in OBVIUS.

Wed Nov 11 15:11:47 1992  Eduardo-Jose Chichilnisky  (ej at violet)

	* Added sum-square-error. Made vector-distance a function.
	Improved error-checking in cumulative-chi-square. 
	Added logarithm method. Improved randomize methods.
	Added gaussian-randomize and poisson-randomize.
	Improved scatter-plot methods by adding scale keyword
	and making range defaults better.
	Added a bunch of check-sizes to array-ops code (not all though).

Sat Oct 17 14:42:38 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* Spiffed up matrix-inverse to handle small singular values well.
	Default singular-value-limit is *machine-tolerance*.
	Multiple values are now returned that indicate the min and max
	singular values, and the dimensions of the result.

Fri Oct 16 09:02:17 1992  Eduardo-Jose Chichilnisky  (ej at ecru)

	* Fixed small bug in quadratic-decomposition, and added keywords
	to it. Removed (matrix-mul arr vec), which used to return an error.
	This op is valod when arr is a column vector. Took out the two other
	matrix-mul(-transpose) methods that always generated cerrors.
	Small enhancements to  make-identity-matrix and make-diagonal-matrix.

	* Fixed up all (add/mul/sub/div)-(rows/cols) methods
	and appropriate C code, ffi code.
	Added vector-length-rows and quadratic-form functions
	and corresponding C code, ffi code.

	* Took LCL dependencies out of stepit.lisp and numerical-recipes.lisp.

Tue Oct 13 10:20:14 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* Major changes to fitting code:
	stepit.c - made stepit re-entrant. Lots of changes.
	stepit.lisp - corresponding changes to lisp interface to stepit.
		Eliminated handling of lists, cumbersome and slow.
		Took out Lucid dependencies (see below)
	amoeba.lisp - spiffed up and added amoeba fitting routine.
		Slower and worse than stepit, but more is better.
		Made interface as close to stepit as possible.
	lucid-hacks.lisp - added routine for getting function pointers
	lucid-ffi.lisp - added new stepit interface functions

Sun Sep 20 13:44:20 1992  David Heeger  (heeger at blue)

	* Cleanup up files to make it easier to port.  Renamed some files
	lucid-*.lisp and created lucid-hacks.lisp.

	* Eliminated retain-bitmap.  No longer really necessary, and
	getting rid of it will make things easier to port.  Got rid of
	x-drawable and postscript-drawable objects (no longer needed).
	Had to make a variety of changes to hardcopy.lisp (still needs to
	be cleanup up further).

Fri Sep 18 15:38:29 1992  Eero Simoncelli  (eero at ecru)

	* Modified load-patches (in lucid-defsys.lisp) to turn of
	redefinition warnings!

    Patch-4:
	* small contour-plot bug: called tolerance with :tolerance key

	* Default args to blur and gauss-out were different for images and
	viewable-matrices.

	* modified matrix ops on viewable-matrix to give error if result
	is one of the args.  Also, put in checks for zero or one values
	when multiplying a viewable-matrix by a scalar matrix.


Thu Sep 10 11:39:00 1992  David Heeger  (heeger at blue)

	* Added overlays of scatter-plots.

Wed Sep  9 11:54:27 1992  David Heeger  (heeger at blue)

	* Viewable-matrix macros did not use gensym, so local variables
	were conflicting with user variables (esp in circular-shift, crop,
	paste).  Eero provided new versions (patch-2.lisp).

Mon Sep  7 10:44:49 1992  Eduardo-Jose Chichilnisky  (ej at blue)

	* Added optional arguments and defaults to weibull functions.
	Added keyword to (copy arr) to allow forcing the copy to
	be allocated on the static heap (like with similar).
	Changed names of identity-matrix, diagonal-matrix
	to make-identity-matrix, make-diagonal-matrix,
	consistent with make-matrix. Changed keyword to displaced-matrix
	to be consistent with crop, paste, etc. Patch-1.lisp.

Sat Aug 29 10:02:22 1992  Eduardo-Jose Chichilnisky  (ej at blue)

	* NOW IN PATCH MODE
	* Added :-> argument to make-histogram, kept :name argument
	for back-compatibility. Added make-histogram methods on 
	lists and arrays. patch-1.lisp

Fri Aug 28 20:25:18 1992  Eero Simoncelli  (eero at picadilly)

	* Modification to patch mechanism: patches are now loaded by
	make-obvius, and by initialize-obvius.  Thus, if you save a new
	world, it will include all patches currently in the patches
	directory.  At runtime, all patches newer than the last one loaded
	when you made the world will be loaded.  

	  - Wrote load-patches function to load patch files and increment
	  *starting-patch-file* to be one greater than the last patch loaded.
	  - Created site-patches.lisp file for sites to add their own
	  patches (only loaded at runtime).

Fri Aug 28 14:59:44 1992  Eduardo-Jose Chichilnisky  (ej at blue)

	* Fixed up Numerical Recipes interface to use library (not .o
	files)
	* Sped up coerce-to-float a little with declarations.

Tue Aug 25 20:04:57 1992  Eduardo-Jose Chichilnisky  (ej at blue)

	* Fixed big bug in (sub im im-mat) which was doing same as (sub im-mat im),
	(as well as div, and sub and div on (arr im-mat)).
	Did this by adding a macro, unary-viewable-reverse-matrix-op
	in viewable-matrix.lisp.

	* Replaced (matrix) methods with (make-matrix). Replaced all calls.

	* Added dot-product, circular-shift on bit-arrays.

	* Altered correlate methods to allow :x :y :x-dim :y-dim keys for
	correlation over a restricted range. 

	* Altered make-slice methods to take :x and :y args, 
	leaving :x-coord and :y-coord for back-compatibility.
	Changed x-mouse to use :x and :y also. 

Sat Aug 22 18:32:15 1992  Eero Simoncelli  (eero at oxfordcircus)

	* Fleshed out the "troubleshooting memory problems"
	section (in hacking.tex).

	* Wrote a brief "Adding menus and dialog boxes" subsection of the
	manual (in hacking.tex).

	* Save-image on sequences was saving the class incorrectly
	(eg, was writing "#<Standard-Class IMAGE-PAIR>", instead of
	"IMAGE-PAIR").

Fri Aug 21 15:48:35 1992  Eero Simoncelli  (eero at oxfordcircus)
	
	* Uncommented the line in load-obvius that compiles all CLOS
	dispatch code, since this now seems to work with the production
	compiler.  Also speeds things up noticably!  CAREFUL: if you
	see errors about lucid:STRUCTURE-IS-STANDARD-OBJECT-P not
	being defined, this line is responsible.
	
	* Added keywords :optimizations and :brief-optimize-message to
	compile-if-necessary and compile-load functions.  obv-compile-load
	and obv-compile now call these with *obvius-compiler-optimizations*.
	Documented these in release notes.

	* Added *obvius-compiler-optimizations* variable (in lucid-defsys) to
	hold optimization list for compiling all obvius source.  Wrote
	current-compiler-optimzations function to return current settings.

	* Wrote WITH-COMPILER-OPTIMIZATIONS to deal with the compiler
	problem  (Lucid has an undocumented variable that holds the
	current compiler optimizations).

Thu Aug 20 17:03:01 1992  Eero Simoncelli  (eero at picadilly)

	* Modified load-obvius and compile-obvius-modules to proclaim
	production compiler optimizations, and return to dev mode (the
	lucid default) afterward (see next comment).  This is gross,
	but I don't know how to read current compiler settings.

	* Finally sorted out this lucid-ffi compilation confusion with
	EJ (we were getting "lucid:set-%ptr-float-ref not defined" bugs).
	We believe lucid-ffi will break if BOTH of the following things
	are true: 1) it is compiled in development mode, and 2) it is used
	from within the same lisp world that it was compiled.  Changing
	condition (1) always seems to fix it.  Changing condition (2) seemed
	to work in some cases, but was more complicated.  Gotta love this
	Lucid Lisp.  ALSO, the problem we had earlier of gc'ing when in
	foreign function calls ONLY HAPPENS WHEN YOU USE THE DEVELOPMENT
	COMPILER.  Clearly, the answer to all of this is to use production
	compiler....

	* Small mods to display (in viewable.lisp):
	1) Modified the meaning of *auto-update-pictures*.  It
	controls whether pictures that are re-displayed by calling
	display on a viewable with an existing picture are re-computed
	(used to recompute pictures on any call to draw-pane, such as
	cycle-pane, or move-picture)
	2) Added new variable *preserve-picture-pane*.  If non-nil, when
	display finds an existing picture of the viewable, it is NOT
	moved to the current pane, but remains on the same pane.  If
	nil, it is moved to the current pane (this is like
	obvius-1.2).  Default value is nil.  Users might prefer either
	mode, depending on whether they like to set up panes with
	particular pictures....  Documented this.

Thu Aug 20 11:14:41 1992  Eduardo-Jose Chichilnisky  (ej at blue)

	* Added error-checking to (paste arr1 arr2) and (paste vec arr).
	Removed some unnecessary matrix-transposes from svd.
	Changed square-p, orthogonal-p, and diagonal-matrix to be more
	efficient. Took malloc out of chartohex.c, added the 
	necessary allocation to write-postscript-data, and added a new
	argument to the ffi wrapper for internal-chartohex in lucid-ffi.
	Put back in the line
	(proclaim '(optimize (compilation-speed 0) (speed 3) (safety 0)))
	into lucid-ffi since this fixed the lucid-setf-ptr-% error.

Tue Aug 18 14:25:47 1992  Eero Simoncelli  (eero at ickenham)

	* Commented out all exports in contour-plot.lisp, except for the
	symbol 'contour-plot.

	* Changed back-compatibility macros in synth to be functions.

	* Nasty bug in flipbooks: subpics were not refreshed, but
	title bar said they were! Mods to flipbook.lisp marked with
	8/18/92. Modified update-subpic-dialog on flipbook to use eq
	and put into flipbook,lisp.  Moved update-subpic-dialog on
	overlay into overlay.lisp.

	* Changed *x-bltable-overhang* to 2.4 to make dragging behavior
	better.

	* fixed (setf iref) to return val 

	* Put in ignore declarations to get rid of all compiler warnings
	(found a few bugs in the process!).  

	* Changed *obvius-system-files* so that user-macros is loaded just
	after generic-fns.  It defines macros that are used in synth.

Mon Aug 17 18:52:09 1992  Eero Simoncelli  (eero at ickenham)

	* Copied all exports from optional modules into
	generic-fns.lisp, so that you don't get import errors when you
	load them.

	* removed "x-dialogs" from the :x-control-panel module: they
	are needed with the :x-windows module, since meta-middle
	brings up a parameter dialog!  Tested to see that picture
	dialogs work if control panel code is NOT loaded.

	* Modified drag-picture for gray/bitmap.  Only clears exposed
	rectangles (old code cleared whole pane) and so avoids flickering.
	Old methods are still in the file (commented out).
	Only losing thing now is that it hesitates every time it has to
	recompute the X-image (i.e. after you drag 40% of the pane).
	This would improve if we could destructively modify the X-image data!

	* Added dimensions methods for gray/bitmap that return the 
	zoomed size of the picture (old code returned dimensions of frob,
	which has changed -- see next change).

Mon Aug 17 12:17:17 1992  Ciamac Moallemi  (ciamac at ickenham)

	* Added smart zooming code to x-blt.lisp so that when 
	8-bit images are zoomed, only the part that is to be
	displayed is calculated (previous code zoomed the whole
	image).  This speeds zooming operations up and eliminates
	a lot of consing.

Sun Aug 16 13:39:02 1992  Eero Simoncelli  (eero at picadilly)

	* Scary bug: Calling malloc from C code may cause a GC in
	lisp, thereby moving all dynamic data objects.  Documented
	this in hacking.tex.

	* Modified code in patches.lisp to compile into the bin directory.

Sat Aug 15 18:18:42 1992  Eero Simoncelli  (eero at oxfordcircus)

	* New arglists: 
		(crop im :offset :dimensions :x :y :x-dim :y-dim :->)
		(paste im base :offset :x :y :->)
		(cirular-shift im :offset :x :y :->)
	I kept around the old keywords (:x-size for crop, :x-offset for
	paste, :x-shift for circular-shift) for back-compatibility.
	Documented these.

	* Fixed nasty bug in viewable-insertion into function dialogs,
	where user lost left-mouse clicks in panes.  Code no longer
	relies on mouse interests, and is therefore much more robust.

	* Inserted simple mechanism to only allow one function dialog
	to be on screen at once (avoid proliferation of these things,
	which ends up confusing the user because left-mouse clicks no
	longer go to *lisp* buffer).  

	* Fixed make-global-parameter-dialog/make-slot-value-dialog/ 
	make-slot-default-dialog: if a dialog already exists for the
	paremters/object/class, its values are reverted, and it is
	exposed.  These are all kept in hash tables.

	* Added with-status-message macro.  Put it into relavent files.

	* Aded position args to make-control-panel (:left :right :top :bottom).
	Added destroy-control-panel function (documented).  When
	control-panel is destroyed, re-direct status msgs to Emacs
	minibuffer.

	* Added new menu items: round. truncate. floor. rotate resample.

	* Wrote find-all-subclasses (iterative depth-first search) and
	used it in class-based menus to get proper ordering.

	* Modified all function and class-defaults menus to be computed at
	click-time.  Now modules can add items to these menus (eg,
	color-images will show up on viewable defaults menu).  Also,
	user can add items by simply adding to the global variable lists.

	* Added Modules submenu to Misc menu: contains optional modules that have
	not yet been loaded.

	* Make-obvius modified to compile module source files (thus
	preventing problems when users try to load them).  

	* Added obv-compile definition in lucid-defsys.  Split
	compile-load into two functions: wrote compile-if-necessary
	and obv-compile.

Fri Aug 14 23:07:11 1992  Eero Simoncelli  (eero at oxfordcircus)

	* Fixed defaults dialogs so that colors are displayed as keywords
	or number-lists, instead of "(lv:find-color ....)".

	* CLeanup of abstraction barrier: tried to get rid of LispView
	references in gray.lisp, small mods to x-blt.lisp.  BUt had to
	leave them in the defclass of bitmap, so that color spec errors
	are flagged in dialogs...  Gross.

	* If bin directories (eg sun4-bin) don't exist, load-obvius now
	creates them.

	* Getting a nasty "lucid:set-%ptr-float-ref not defined" error
	whenever foreign code is called.  It seems to happen when I
	compile-load lucid-ffi, but not if I just load the source.
	For now, took lucid-ffi out of *obvius-system-files* list, and
	loaded source from load-obvius.

Fri Aug 14 17:59:22 1992 David Heeger (heeger at blue)

	* Fixed polar-plots to use their own polar-plot-frob.  Previous
	code used vf-frob.

Thu Aug 13 11:23:25 1992  Eduardo-Jose Chichilnisky  (ej at blue)

	* Mods to SVD: allocate temporary space in Lisp and pass it
	in, since losing LUcid often calls GC when C mallocs!

	* Moved overlay code into hardcopy (ps stuff) 
	x-bltable (x bitmap stuff) and x-mouse (mouse-specific stuff).
	Made overlay part of normal distribution (not a module).

Wed Aug 12 17:51:53 1992  David Heeger  (heeger at blue)

	* Rewrote overlay (again).

	* Minor changes to flipbooks related to picture slot dialog.
	Cleaned it up so that sub-pic slots are handled differently for
	flipbooks and overlays.

Tue Aug 11 12:07:29 1992  David Heeger  (heeger at blue)

        * Fixed hardcopy.  Eero had left a huge bug that broke everything.
	The postscript-pane can not be used for the
	system-dependent-frob slot.  Destroying a picture involves
	destroying its frob slot.  If the frob slot is a pane, then
	destroy on a picture will attempt to destroy the pane (that
	wouldn't be good).

	* Fixed contour-plot reset-picture-defaults. If skip is supplied,
	then use it.  Otherwise choose skip based on density (which is
	always supplied via default initarg).

Sun Aug  2 17:26:29 1992  Eero Simoncelli  (eero at ecru)

	* Massive speedup of flipbook code: added fast-display-seq
	method dispatching on sub-frob type.  Wrote a generic one 
	(works for all types of frob), and a fast one for 'x-bltables.
	Thus, flipbooks of gray pictures are now much more efficient.

	* Created a Makefile in the doc directory.

	* Added doc for filter display.

	* Added doc for fft and power-spectrum.

Thu Jul 30 10:08:20 1992  Eero Simoncelli  (eero at oxfordcircus)

	* Added make-full-tarfile for tar'ing  entire source tree (for
	transfer between MIT to Stanford).  Additional files include
	the DONE file, The site-specific site-paths.lisp files, and the
	old directory.
	
	* lucid-ffi: Put compiler optimizations at top of file.
	There were serious bugs calling foreign functions (I think because
	of in-line compilations).  Confusion: it seems to work with safety-0
	in the file....

	* Added (:array :unsigned-8bit) declarations.

	* Added doc index entries for each subsection heading.  Got
  	rid of losing caps and plurals in index entries! (e.g. \lsym{Grays})

	* Documented display, warp, rotate and resample.

	* Added rotate and resample to imops. 

	* Warp no longer an optional module (it is very small so we
	should just include it).

Wed Jul 29 16:20:22 1992  Eero Simoncelli  (eero at oxfordcircus)

	* Speedup of display-seq (could still use more, but it's a start)

	* fixed use of density parameter in vector-field, contour-plot.

	* Pane manipulation functions provided (useful from within
	programs, or if mouse dies): exported pop-picture, cycle-pane,
	get-viewable.  Wrote next-pane. Got rid of destroy-top-picture
	(same as pop-picture), and destroy-pane (destroy *current-pane*).
	Got rid of destroy-top-viewable: provided current-viewable
	instead, which returns viewable on top of current pane.
	Documented all of these.

	* Modified functions in synth to pass :binsize to
	(periodic)-point-operation calls.

	* Added point-operation method for periodic-discrete-functions.

	* changed names of synthetic noise generators
	(make-gaussian-noise, make-uniform-noise, make-random-dots).
	Left macros for backward compatibility.  Documented these.

Tue Jul 28 17:34:29 1992 Eero Simoncelli (eero at oxfordcircus)

	* Smaller floats in dialog boxes!

	* Fixed default blur kernel not to change mean value of im.

	* Small modification to with-result: handles 'apply 'fn in hist-list.

	* sequence.lisp -> viewable-sequence.lisp to avoid confusion with CL.

Mon Jul 13 11:43:19 1992  Eero Simoncelli (MIT)  (eero@csh3)

	* load-image on image-sequence now checks for a "class" key!

	* Modified fft to take dimensions argument.

	* Fixed rounding bug in warper.c.

Sun Jul 12 09:50:08 1992  Eero Simoncelli (MIT)  (eero@fasolt)

	* Modified dialogs to come up below menu bar.  Picture dialogs
	come up near the corresponding pane (depends on where the pane is
	and how big the dialog is - yucho!).

	* Added display stuff for filters (gray or bar-graphs, depending
	on rank).

	* Fixed ugly clipping-region bug for bar-graphs (wasn't drawing
	last spike)

	* Fixed array-from-list to coerce args to element-type if it is
	passed.  Now, can pass integers: (make-filter '((1 2 3) (4 5 6))).

	* Fixed setf-iref on bit-image

	* Point-operation now has default binsize of nil => call the
	function directly (rather than using a discretized lookup-table).
	Slower, but no surprises! Documented.

	* Fixed paste on sequences to pass correct keyword defaults.

	* Added :center :post-center and :pre-center keys to power-spectrum
	and fft functions.  These allow user to do circular-shifting
	automatically.

Fri Jul  3 11:42:07 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* Replaced functions make-image, make-discrete-function, and
	make-log-discrete-function with methods. They can be used as
	before, but they now can also accept arrays as their first
	argument, in which case they act as the ***-from-array functions
	used to work. 
	* Made new world. Removed patches.

Wed Jul  1 23:19:26 1992  Eero Simoncelli  (eero at oxfordcircus)

	* Fixed copy-object method so that initargs override slot values.

	* Took out exported globals from contour-plot.

	* Lucid-defsys.lisp: Got rid of global compilation safety
	proclamation: put it in as a declaration in obv-compile-load.
	Added (lcl::compile-all-dispatch-code) and
	(lcl::precompile-generic-functions) to load-obvius.  This makes
	the methods much faster! Added optional filename to make-obvius.

	* Incorporated new surface-plot code.  

    	* Many fixes to hardcopy, although there are still problems.  Works for
	surface-plots.  Uses generic line-drawing frobs.  Copied existing
	picture slots correctly. Works for retain-bitmaps t or nil.
	Default zoom parameter is :auto (fills the page).
	Postscript-pane dimensions are now '(660 500) (size of 8.5x11
	paper in default postscript units).

        * Added point-operations round. truncate. and floor. to the
	source code. These are similar to the common lisp functions.
	Documented these.

	* Destroy mouse binding now removes pic from pane immediately.

	* Default args of crop modified.

	* Zoom is now a required arg to render.

	* Fixed zero! on sequences, pyramid, matrices to return vbl.

Sat Jun 27 13:59:08 1992  David Heeger & Eero Simoncelli (heeger at blue)

	* Fixed Purge! function:  it now takes keywords :suppress-warnings
	and :preserved-viewables.

	* Added set-not-current method on graphs to recompute y-range slot
	when refreshing.

	* Fixed setf iref.

	* control-panel icon.

	* Fixed overlays.  Had weird problems with destroy, etc.  Added
	name keyword to display-overlay.  Added warning to get people to
	stop using make-overlay.  Display-overlay returns t, instead of
	returning picture of viewable.

	* Fixed flipbook single-step to clear pane. NOTE: now this is busted
	for gray/bitmap flipbooks.  We need to specialize on the
	sub-picture type.

	* Fixed display.  If there is ANY picture of a vbl on any pane,
	auto-display does not make a new one!  Also, auto-display does not
	move picture to another pane, since some users like to keep panes
	organized and don't want pictures randomly jumping around!

	* Fixed destroy, if name is :destroyed, don't try to destroy it
	again.

	* Fixed dot-product on viewable-matrix.  Added zero!

Fri Jun 19 09:29:57 1992  David Heeger  (heeger at blue)

	* Fixed minor bug in free-array.  It used to crap out if you
	passed it a non-static array, and no heap had yet been created.

	* bug fix in reset-picture-defaults ((pic flipbook) (seq viewable-sequence)
	Used to have (remf subl key) so it skipped every other keyword.

	* Added reset-compound-picture-defaults ((sub-pic graph) (sub-vbl viewable)
	Not quite correct, but it's better than it was.

	* Fixed array-fft to always divide by (sqrt (total-size arr)),
	both for foward and inverse.

	* Added endpoint slot to discrete-functions.  Default value is t,
	so behavior is the same as it used to be.  If endpoint is nil,
	then the discrete function starts sampling at min and stops
	just below max.  Changed def-simple-class, settable-parameters,
	make-discrete-function, fill-discrete-function, set-result,
	domain.

	* Changed fft on discrete-function to do the right thing (I think)
	with :increment (/ 1 (increment df) padded-size).

	* Added periodic-discrete-functions.

	* Added log-discrete-functions.

	* Added circular-shift and mean-square-error on viewable-matrix.
	
Tue Jun  9 14:40:52 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* Changed *starting-patch-file* to 1 from 5. Don't know why it was 5.

	* Added row-space, row-null-space, col-space, col-null-space
	to svd.lisp, removed orthogonal-complement (which is replaced
	by row-null-space).

Fri May 29 17:39:39 1992  Eero Simoncelli  (eero at oxfordcircus)

	* WRONG: I fixed x-mouse.lisp so that it doesn't initialze the X
	display. It is now back in the *obvius-x-files* list where it
	belongs.
	* Modiified Purge! function to take preserved-viewables args.
	* Added sym-or-vbl function.
	* Added new (slightly faster) convolve.c code.
	* Dialogs are now lv::popup-windows instead of lv::base-windows.
	* Moved old code into old/ directory.

Fri May 29 10:53:34 1992  David Heeger  (heeger at blue)

	* X-mouse can not be loaded into the world.  It initializes
	the X display which breaks when the world is loaded.  So,
	x-mouse.lisp is not included in site-init.lisp.  Rather, it gets
	loaded at run time in obvius-window-init.lisp.

Wed May 27 19:11:02 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* svd.lisp: Took out symmetric-decomposition, non-singular-p.

Tue May 26 10:08:13 1992  David Heeger  (heeger at blue)

	* Added multivariate gaussian-noise method (in svd.lisp because it
	depends on svd and other matrix utilities).

	* Added "old" directory in obvius for out-of-date code that we
	don't want to loose (e.g., old svd code written in lisp).  Policy
	on files in "old" is there should be a comment near the top
	justifying why they shouldn't be deleted.  If that reasoning is no
	longer valid, then nuke 'em.

	* svd.lisp: new version of principal-components.  Added
	orthogonal-complement.

	* New file: row-ops.lisp (part of matrix module)
	- New versions of row,rows,col,cols,displaced-row,displaced-rows.
	- Lots of other new row operations, some of them pretty weird.

	* New file: gaussian-noise.lisp:
	- Changed gaussian-noise to be a method (yuch) that takes mean and
	variance as arguments.  It's a method so we can use for
	multivariate gaussian noise also (given vector and covariance
	matrix).  
	- Eliminated normal-random function.
	- Added normal-noise function that calls gaussian-noise with 0 1.
	- Had to make small change to simplex (which calls
	gaussian-noise).
	- Didn't change make-gaussian-noise-image.  It does its own
	iterative thing.
	- Eliminated make-normal-random-image.

	* Changed how/when control panel gets made. x-control-panel is
	obv-required in site-init.lisp.  Loading X-control-panel does not
	make a control panel.  You must call (make-control-panel) in your
	obvius-init.lisp file.  This is done in the default
	obvius-init.lisp.  (make-control-panel) is now exported.

Sun May 24 15:10:50 1992  David Heeger  (heeger at blue)

	* Changed default for independent-parameters (used to be t, now it
	is nil) in flipbooks and pasteups.

	* Wrote gamma-correct method on arrays (in array-ops.lisp) and on
	viewables (in generic-ops.lisp).

	* Eliminated gamma from all gray pictures.  Gamma-correction is
	done by setting gray-gamma in the screen.  Eventually, screens
	will inherit from devices and the gamma slot will be either a
	number of a table (to linear the screen more precisely).

	* Finished rehacking overlays.  There are some kludges, but it is
	good enough for now.  Two main limitations: (1) Discrete-functions
	must have the same origin, increment, and size to be overlayed.
	(2) Overlaying bit-image on image is slower than it should be.
	Best way to do it would be to use :operation keyword in copy area,
	but I could not get that to work.

Sat May 23 10:12:12 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* Made changes/additions to matrix.lisp. Functions affected:
	matrix-transpose,matrix.

	* Added statistics module. This consists of numerical-recipes.lisp
	and statistics.lisp. The user must set a path in the
	site-paths.lisp file which tells where to find the
	numerical-recipes object modules. Without them this stuff does not
	work. 

Fri May 22 16:24:18 1992  Eduardo-Jose Chichilnisky  (ej at green)

	* Replaced regress.lisp and stepit.lisp files with newer versions. 
	Added corresponding C code in stepit.c, and C code wrapper in
	lucid-ffi.lisp.

Fri May 22 09:56:39 1992  David Heeger  (heeger at blue)

	* Added :around method for single-step (in x-control-panel).  If
	there is a picture parameters dialog, it updates the dlg so
	widgets	point at the new sub-picture.

Thu May 21 10:20:31 1992  David Heeger  (heeger at blue)

	* Generic-ops.lisp created.  Defines lots of methods on viewables
	to just operate on the data slot.  Did NOT delete old method
	definitions (e.g., imops.lisp was unchanged).

	* defined range, similar, and copy on (thing t).  removed range on
	image and viewable-matrix (to use the generic version).

	* destroy-viewable:  always suppress-warnings if array is not
	allocated from static-heap.  Used to warn every time (as debugging
	aid).

	* Changed definition of x-pane so that they can be destroyed with
	the mouse in the usual openwindows way.  Added small change to
	draw-pane method on x-pane to make sure it doesn't try to redraw 
	pane while it, and its pictures, are being destroyed.

	* Set parameters dialog on flipbooks and overlays now lets you set
	parameters of the subpictures as well:
	- Added set-subpic-parameter-interest class and receive event.
	- make-slot-value-widget now a method.  It must be slightly
	  different for flipbooks and overlays.

Tue May 19 10:43:31 1992  David Heeger  (heeger at blue)

	* Added plot symbols to all graphs.  This involved touching
	a lot of code in drawing.lisp and graph.lisp, and touching
	some code in x-draw.lisp, x-window.lisp, and hardcopy.lisp.
	The previous versions of some of these files were saved as
	whatever.lisp.5-19-92.

	* Added axes (but no axis labels) to polar plots.

	* Added scatter plots.  (display image-pair 'graph) no
	longer works.  Use (display image-pair 'scatter-plot) or use the 
	new scatter-plot method.

	* Started rewriting overlays.  First step was to remove all
	references to overlay in color-picture, drawing, gray, memory, and
	picture.lisp.

Tue May 12 18:29:06 1992  Eero Simoncelli  (eero at oxfordcircus)

	* Added patches accumulated from October 1991 to present:
	  - Patch repl to avoid setting * when no values returned
	  - Added make-disc function with soft threshold
	  - New: make-soft-threshold-df
	  - Purge! function to reclaim all memory (destroying all viewables).

	* Fixed all of the make-<vbl> functions.  Put the :-> arg back
	since it was driving us all crazy.  Also, each of these
	functions now should have a full (explicit) keyword arglist.
	This is so users can find outline-mode what the parameters are!

Thu Apr 23 16:41:43 1992  Eero Simoncelli  (eero at picadilly)

	* Modified compile-load (sorry, guys) to have :output-file
	keyword, which matches the Common Lisp compile-file command.

	* Modified obv-compile-load to locally bind compiler options,
	and got rid of global proclaim in lucid-defsys.lisp

	* Put initialization line in x-control-panel.lisp (make-control-panel)

	* Set up new version number (2.2)