/**
* do not allow more than 1 rule for a given symbol
* Deterministic L-Systems allow only one production rule for each symbol
* Deterministic LSystems do not allow setting different Probability Distributions for the Rewrite rules
*/
public override void AddRule(ProductionRule RewriteRule)
{
if (RulesLookUpMap.ContainsKey(RewriteRule.GetPredecessor()))
{
throw new InvalidProgramException("Could not add RewriteRule for Symbol: '" + RewriteRule.GetPredecessor() + "', because there is already a rule added for that symbol. Deterministic L-Systems have only one production rule per symbol by definition!");
}
//Add the rule to the list of rules
base.AddRule(RewriteRule);
this.RulesLookUpMap.Add(RewriteRule.GetPredecessor(), RewriteRule);
}
/**
* Adds a RewriteRule with a certain Probability Distribution(should be between [0.0 - 1.0]).
* It is assumed that for any letter a ∈ V , the
* sum of probabilities of all productions with the predecessor a is equal
* to 1.
*
*/
public void AddRewriteRule(ProductionRule RewriteRule, Double ProbabilityDistrubution)
{
base.AddRule(RewriteRule);
//associate the rule to a given probability distribution
RulesProbabilityDistributionLookUpMap.Add(RewriteRule, ProbabilityDistrubution);
//Add the Rule to the List of Rules associated to that predecessor symbol:
if (RulesLookUpMap.ContainsKey(RewriteRule.GetPredecessor()))
{
IList <ProductionRule> PredecessorRules = RulesLookUpMap[RewriteRule.GetPredecessor()];
PredecessorRules.Add(RewriteRule);
}
else //init the list if that's the first rule to be added for that symbol
{
IList <ProductionRule> PredecessorRules = new List <ProductionRule>(1);
PredecessorRules.Add(RewriteRule);
//add to the lookup map:
RulesLookUpMap.Add(RewriteRule.GetPredecessor(), PredecessorRules);
}
}
/**
* Adds a RewriteRule with a Probability Distribution of 1.0
*
*/
public override void AddRule(ProductionRule RewriteRule)
{
AddRewriteRule(RewriteRule, 1.0);
}
/**
* Adds a rewrite rule to the set of rules used by the LSystem and validates it agains the policy of the LSystem implementation(Different implementation could not work with certain rules)
*/
public virtual void AddRule(ProductionRule ProductionRule)
{
ProductionRules.Add(ProductionRule);
}
