Rules

^Syntax
RuleStatement :
   Properties Expression<true> (RuleOp Expression<true>)^* ;

RuleOp :
      < | <= | = | >= | >
   | IDENT
   | ! RuleOp

Rules are the basic building blocks of a figure. They define relationships between figure objects. Geo-AID attempts to generate a figure that obeys them as good as it can. Rules tie two expressions (left and right hand side) with a relationship, otherwise known as the rule operator. Currently supported rule operators are all comparison operators. When given an identifier, a proper defined rule operator is looked up and compiled accordingly. Rules can also be inverted with an exclamation mark in front of the operator.

Rules can be chained like so:

2 < a < 3;

The above is equivalent to

2 < a;
a < 3;

Weights on non-ident rules are assigned to them directly and end up being used directly in the generation process. Weights on ident rules are treated differently depending on the rule. You should seek documentation on them in docs for respective operators.

Rule operators are case-insensitive and ignore underscores. This means that rules lies_on, lieson, LIEsoN and L_ie_s___On are the same rule.