http://code.activestate.com/recipes/users/4168682/2012-03-27T19:30:47-07:00ActiveState Code Recipes2012-03-27T19:30:47-07:00Shea Kauffmanhttp://code.activestate.com/recipes/users/4168682/http://code.activestate.com/recipes/578087-useful-unrestricted-grammar/

<p style="color: grey"> Python recipe 578087 by <a href="/recipes/users/4168682/">Shea Kauffman</a> (<a href="/recipes/tags/dict/">dict</a>, <a href="/recipes/tags/dictionary/">dictionary</a>, <a href="/recipes/tags/grammar/">grammar</a>, <a href="/recipes/tags/grammer/">grammer</a>, <a href="/recipes/tags/language/">language</a>, <a href="/recipes/tags/thue/">thue</a>, <a href="/recipes/tags/turing_machine/">turing_machine</a>, <a href="/recipes/tags/unrestricted/">unrestricted</a>). </p> <p>This is an implementation of an easy to use unrestricted grammar. It could be used for quickly prototyping a DSL, testing a post-formal system, or parsing test in a way that requires context. It would however be extremely slow for simple substitutions.</p>

2010-03-10T16:35:37-08:00Shea Kauffmanhttp://code.activestate.com/recipes/users/4168682/http://code.activestate.com/recipes/576929-planet-terrain-heightmap-generator/

<p style="color: grey"> Python recipe 576929 by <a href="/recipes/users/4168682/">Shea Kauffman</a> (<a href="/recipes/tags/creation/">creation</a>, <a href="/recipes/tags/generation/">generation</a>, <a href="/recipes/tags/generator/">generator</a>, <a href="/recipes/tags/heightmap/">heightmap</a>, <a href="/recipes/tags/landscape/">landscape</a>, <a href="/recipes/tags/map/">map</a>, <a href="/recipes/tags/pil/">pil</a>, <a href="/recipes/tags/planet/">planet</a>, <a href="/recipes/tags/planted/">planted</a>, <a href="/recipes/tags/pygame/">pygame</a>, <a href="/recipes/tags/terrain/">terrain</a>, <a href="/recipes/tags/world/">world</a>). Revision 9. </p> <p>The process is simply: 1. Take a plane 2. Cut out a shape 3. Make it a little taller 4. Repeat</p> <ul> <li>Similar to the <a href="http://freespace.virgin.net/hugo.elias/models/m_landsp.htm">spherical landscape</a> algorithm by Hugo Elias.</li> <li>I found a combination of Ovals and Triangles to produce the best results.</li> </ul>

2009-01-04T19:10:28-08:00Shea Kauffmanhttp://code.activestate.com/recipes/users/4168682/http://code.activestate.com/recipes/576606-unrestricted-grammar-used-like-a-dictionary/

<p style="color: grey"> Python recipe 576606 by <a href="/recipes/users/4168682/">Shea Kauffman</a> (<a href="/recipes/tags/dict/">dict</a>, <a href="/recipes/tags/dictionary/">dictionary</a>, <a href="/recipes/tags/grammar/">grammar</a>, <a href="/recipes/tags/grammer/">grammer</a>, <a href="/recipes/tags/language/">language</a>, <a href="/recipes/tags/thue/">thue</a>, <a href="/recipes/tags/turing_machine/">turing_machine</a>). </p> <p>Programs can be written as substitutions. This allows a set of substitution rules to be defined and then strings are transformed using these rules in a left recursive manner.</p>