https://dokuwiki.grogra.de/ 2026-05-02T04:12:29+00:00 https://dokuwiki.grogra.de/ https://dokuwiki.grogra.de/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2026-04-21T12:28:58+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=15_cheatsheet:operators&rev=1776774538&do=diff XL operators XL-Operators are designed to simplify the usage of XL queries and rewriting rules. Moreover these operators can improve the performance of a query due to their deep integration into the model. In the following, the operators a separated into analytical and selection operators to either get a value for analysis or a node/ a collection of nodes for rewriting. text/html 2026-04-14T12:05:23+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=02_user_tutorials:mtg:import_mtg&rev=1776168323&do=diff MTG - Multiscale Tree Graph <https://wkurth.grogra.de/XL12/WorkshopMTG.pdf> in some cases this helps: [a:de.grogra.mtg.MTGRoot ::> a.plantFrame(3,400);] EXAMPLE - Importing and Using MTG data in GroIMP ---------- NOTE: In this example, a .mtg file is already imported and a .rgg file has already been added into the project. text/html 2026-03-30T08:42:36+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=06_tours:01_zero_to_tomato:007&rev=1774860156&do=diff A simple tomato plant modelFrom zero to tomatoGeneral Introduction Leaf triangulation Triangulation is the process where a (ordered) set of triangles is generated out of a (unordered) set of points. The result is a set of triangles, now called faces, that can be directly drawn. Let's see the following set of 2D point: text/html 2026-03-27T16:46:54+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator&rev=1774630014&do=diff Overload operator Operators can be overloaded in XL by declaring the method operator$NAME_OF_OPERATOR(var , var ){}. The list of operators in groimp is available at: xl specification. module A(float len) extends Sphere(0.1) { public static boolean operator$com (A a) { return true; } // public static A operator$add (A a, int b) { public static A operator+ (A a, int b) { a.len += b; return a; } public void operator++(){ ++this.len; } } public void run () … text/html 2026-03-27T16:46:09+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:01_com&rev=1774629969&do=diff text/html 2026-03-27T16:46:03+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:02_neg&rev=1774629963&do=diff text/html 2026-03-27T16:45:59+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:03_add&rev=1774629959&do=diff text/html 2026-03-27T16:45:54+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:04_sub&rev=1774629954&do=diff text/html 2026-03-27T16:45:48+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:05_mul&rev=1774629948&do=diff text/html 2026-03-27T16:45:44+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:06_div&rev=1774629944&do=diff text/html 2026-03-27T16:45:39+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:07_shl&rev=1774629939&do=diff text/html 2026-03-27T16:45:34+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:08_shr&rev=1774629934&do=diff text/html 2026-03-27T16:45:26+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:09_ushl&rev=1774629926&do=diff text/html 2026-03-27T16:45:20+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:10_ushr&rev=1774629920&do=diff text/html 2026-03-27T16:45:15+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:11_or&rev=1774629915&do=diff text/html 2026-03-27T16:45:07+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:12_and&rev=1774629907&do=diff text/html 2026-03-27T16:44:52+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:10_rgg_addition:04_operator_overload:02_function&rev=1774629892&do=diff Functions Instances of de.grogra.xl.lang.FloatToFloat represent functions which take floats as input and return values of type float. Such instances cant be created by: * lambda expressions of the XL programming language, e.g., FloatToFloat f = float x => float x**2 text/html 2026-03-27T16:44:40+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?id=01_user_documentation:07_rgg_xl:02_xl:09_java_addition:overload_operator:13_gt&rev=1774629880&do=diff text/html 2026-03-23T16:53:54+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?image=01_user_documentation%3A03_interacting_with_groimp%3A02_panels%3A03_2d%3Agraph.png&ns=01_user_documentation%3A03_interacting_with_groimp%3A02_panels%3A03_2d&rev=1774284834&tab_details=history&media_do=diff&do=media <img src="https://dokuwiki.grogra.de/lib/exe/fetch.php?w=500&amp;h=500&amp;tok=091dc0&amp;media=01_user_documentation:03_interacting_with_groimp:02_panels:03_2d:graph.png" alt="graph.png" loading="lazy" width="500" height="500" /> text/html 2026-03-23T16:43:39+00:00 Tim (Tim@undisclosed.example.com) https://dokuwiki.grogra.de/doku.php?image=01_user_documentation%3A03_interacting_with_groimp%3A02_panels%3A04_attribute_editor%3A02_property_editors%3A99_annotation%3Afcdir_property_editor.png&ns=01_user_documentation%3A03_interacting_with_groimp%3A02_panels%3A04_attribute_editor%3A02_property_editors%3A99_annotation&rev=1774284219&tab_details=history&media_do=diff&do=media <img src="https://dokuwiki.grogra.de/lib/exe/fetch.php?w=500&amp;h=500&amp;tok=f18824&amp;media=01_user_documentation:03_interacting_with_groimp:02_panels:04_attribute_editor:02_property_editors:99_annotation:fcdir_property_editor.png" alt="fcdir_property_editor.png" loading="lazy" width="500" height="500" />