MathMap 0.12
------------
MathMap is a GIMP plug-in and command-line tool which allows
distortion of images specified by mathematical formulae. For each
pixel in the generated image, an expression is evaluated which should
return a pixel value. The expression can either refer to a pixel in
the source image or can generate pixels completely independent of the
source. MathMap not only allows the generation of still images but
also of animations.
The MathMap homepage can be found at
http://www.complang.tuwien.ac.at/~schani/mathmap/
It includes a user's manual as well as screenshots and examples.
Changes since 0.11:
* Requires at least GIMP 1.1.26.
* MathMap now has a GIMP-independant command line version.
* Much improved complex arithmetic (thanks to Hans Lundmark).
* New/improved functions: scale, toRGBA, toHSVA, gamma, sinh, cosh,
tanh, asinh, acosh, atanh, arg, conj, exp (most of them
contributed by Hans Lundmark).
* Some bug fixes.
Changed since 0.10:
* Requires at least GIMP 1.1.
* More than one input image can be specified!!!
* MathMap now registers all examples in the PDB.
* Several new/improved examples.
* New/improved functions: lerp, clamp, noise.
* Some internal changes.
* Fixes some bugs.
Changes since 0.9:
* Expressions can now contain values which the user can specify
through the GUI (numbers, colors, booleans, curves). This is
a mega-feature!
* Pixels outside the image can now also be reflected back into
the image (thanks to Eric Kidd <eric.kidd@xxxxxxxxx>).
* More matrix/vector algebra (including gaussian elimination).
* The positive Y-axis direction is now upwards which is clearly
The Right Thing.
* Some minor C code generator changes which should not affect the
user but easy writing of built-ins.
* New/improved functions: print.
* Some bug fixes.
Changes since 0.8:
* Lots of bug fixes.
* Simplified build procedure.
* The parser is now a little more forgiving.
* Generalized tuple subscription.
* Tuple subscripts can now be assigned to (making morph obsolete).
* New/improved functions: det, crossp, atan, sum.
Changes since 0.7:
* Now runs under both GIMP 1.0 and GIMP 1.1.
* Features a transparent MathMap->C compiler under GIMP 1.1 boosting
performance by a factor 2 to 8.
* Simple vector and matrix algebra.
* Pixels outside the image can now be either wrapped or given any
color (including transparency).
Changes since 0.6
* Implemented the tagged tuples type system. This is major feature!
* Implemented better error handling by borrowing a piece of code
from the current development tree of chpp.
Changes since 0.5
* Alpha channel now shows up in the preview (thanks to Andy Thomas).
* Added the exponentation operator (^).
Changes since 0.4
* Completely redesigned the dialog.
* Added a curve widget which allows the user to intuitively specify
a function which can be accessed from the expression (curve).
* Added the function gradient which accesses the user-defined
gradient.
* Made it possible to change the parameter t when not animating.
* Implemented a fast-preview option.
* Put the examples into a file which is displayed in a tree widget.
* Expressions are now edited in a text widget, which allows for
multi-line expressions.
* Moved the plug-in to Filters/Generic, so as to conform to the new
menu hierarchy.
Changes since 0.3
* Added syntactic sugar for some functions (especially logical
operators).
* Added a pow function.
* Support for alpha layer.
* Support for grayscale images.
* Animation capability.
Changes since 0.2
* if is now a language-level construct.
* I have introduced while and do-while loops.
Changes since 0.1
* Fixed the bug that caused it to crash after the first preview.
* Added a few more functions: red, green, blue and rgbColor.
* Added the assignment (=) and the sequence operator (;).
----
Mark Probst
schani@xxxxxxxxxxxxxxxxxxxxx
