Changes between Version 1 and Version 2 of Help/Styles/MapCSSImplementation

Timestamp:

2011-02-15T00:08:23+01:00 (15 years ago)

Author:

bastiK

Comment:

add eval

Help/Styles/MapCSSImplementation

@@ -282 +282 @@
  * integer or floating point (in simple form e.g. 0.3). In general can be negative, but most properties do not support negative numbers
  * has a special meaning if you put a "+" sign in front (relative width)
+
+== Eval expressions ==
+See [http://josm.openstreetmap.de/browser/josm/trunk/src/org/openstreetmap/josm/gui/mappaint/mapcss/Expression.java source] for details and an up to date list.
+ +, -, *, /::
+  arithmetic operations
+ ||, &&, !::
+  boolean operations
+ <, >, <=, >=, ==::
+  comparison operators
+ asin, atan, atan2, ceil, cos, cosh, exp, floor, log, max, min, random, round, signum, sin, sinh, sqrt, tan, tanh::
+  the usual meaning, [http://download.oracle.com/javase/6/docs/api/java/lang/Math.html details]
+ cond(b, fst, snd)::
+ b ? fst : snd::
+  if ('''b''') then '''fst''' else '''snd'''
+ list(a, b, ...)::
+  create list of values, e.g. for the {{{dashes}}} property
+ prop(''p_name'')::
+  value of the property ''p_name'', e.g. prop({{{"width"}}})
+ prop(''p_name'', ''layer_name'')::
+  property from the layer ''layer_name''
+ is_prop_set(''p_name'')::
+  true, if property ''p_name'' is set
+ is_prop_set(''p_name'', ''layer_name'')::
+  true, if property ''p_name'' is set
+ get_tag_value(''key_name'')::
+  get the value of the key ''key_name'' from the object in question
+ has_tag_key(''key_name'')::
+  true, if the object has a tag with the given key
+ rgb(''r'', ''g'', ''b'')::
+  create color value (arguments from 0.0 to 1.0)
+{{{#!comment
+ red(''clr''), blue(''clr''), blue(''clr'')::
+  get value of color channels in rgb color model
+}}}
+ JOSM_search("...")::
+  true, if JOSM search applies to the object
+{{{#!comment: untested
+ JOSM_pref(''key'', ''default'')
+  get JOSM preference 
+ JOSM_pref_color(''key'', ''default'')
+  get color from JOSM preference
+}}}