Projects / Formulas Rendering Plug-In for the Gimp 2

Formulas Rendering Plug-In for the Gimp 2

The Formulas Rendering Plug-In for the Gimp 2 is a simple plugin that allows you to change the values of each color channel of each pixel of a layer by using mathematical expressions. It is able to handle RGB* and Gray* images. Available operators are: +, -, *, /, ^, and %. There are many functions available, such as sin, cos, sqrt, abs, min, max. A few constants are provided (pi, e, j), and a lot of pre-defined variables are usable (w for image's width, h for image's height, x and y for cartesian coordinates in the image, etc.).

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Recent releases

  •  14 Nov 2010 15:07

    Release Notes: Support was added for arbitrary pixel accessors: red(x,y), green(x,y), and blue(x,y). A few GUI design glitches were fixed, as well as a preview rendering bug, and some minor compilation issues and warnings were fixed.

    •  29 Jul 2006 20:18

      Release Notes: This release fixes a segfault with newer versions of GdkPixbuf. The whole source code has been cleaned up as well.

      •  22 Nov 2004 01:34

        Release Notes: This release has an improved and cleaned up formula parser (support for multiple arguments functions, precalculation, etc.). New functions were added (min, max, rand, sign, log2, and atan2). New values were added (r and t for polar coords; red, green, blue, gray, and alpha now stand for original pixels). The help has been improved and a 'Reset' button is now available.

        •  09 May 2004 20:15

          Release Notes: This release adds a help file with a screenshot, repairs the rendering on Gray* layers, and cleans up the formula parser (it now uses GLib HashTable). There are minor fixes and clean-ups. The name of the binary file has been fixed again.

          •  06 May 2004 19:05

            Release Notes: A preview inside the plugin dialog has been added. 2 important bugs inside the formula evaluator have been fixed. The sinh, asinh, cosh, acosh, tanh, and atanh functions have been added. Default plugin formulas are 'r', 'g', 'b', and 'a'. The name of the binary file has been fixed (please read the README if upgrading). There are various cleanups.

            Recent comments

            18 May 2004 08:56 suso

            Cool plugin
            I think this plugin is neat because it updates the preview in real time as you are typing the formulas in. It's nice just to see what happens. Very cool.

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