public static List<EdgeAggregator> Instantiate(GroundedClause clause)
{
annotation.active = EngineUIBridge.JustificationSwitch.ANGLES_OF_EQUAL_MEASUREARE_CONGRUENT;
List<EdgeAggregator> newGrounded = new List<EdgeAggregator>();
AngleEquation newAngEq = clause as AngleEquation;
if (newAngEq == null) return newGrounded;
// One side must be atomic
int atomicity = newAngEq.GetAtomicity();
if (atomicity != Equation.BOTH_ATOMIC) return newGrounded;
// Split the information into the angle and its measure
KeyValuePair<Angle, double> newAngleAndMeasure = ExtractFromEquation(newAngEq);
// If splitting failed, we are not interested in the equation
if (newAngleAndMeasure.Key == null) return newGrounded;
// Can we create any new congruence relationships comparing numeric (deduced angle measure) values?
foreach (AngleEquation oldEq in candiateAngleEquations)
{
KeyValuePair<Angle, double> oldEqAngle = ExtractFromEquation(oldEq);
// Avoid generating equivalent angles
if (!newAngleAndMeasure.Key.Equates(oldEqAngle.Key))
{
// Do the angles have the same measure
if (Utilities.CompareValues(newAngleAndMeasure.Value, oldEqAngle.Value))
{
AlgebraicCongruentAngles acas = new AlgebraicCongruentAngles(newAngleAndMeasure.Key, oldEqAngle.Key);
// For hypergraph construction
List<GroundedClause> antecedent = new List<GroundedClause>();
antecedent.Add(newAngEq);
antecedent.Add(oldEq);
newGrounded.Add(new EdgeAggregator(antecedent, acas, annotation));
}
}
}
// Add to the list for future reference
candiateAngleEquations.Add(newAngEq);
return newGrounded;
}
public static List<GenericInstantiator.EdgeAggregator> CreateTransitiveCongruence(Congruent congruent1, Congruent congruent2)
{
List<GenericInstantiator.EdgeAggregator> newGrounded = new List<GenericInstantiator.EdgeAggregator>();
//
// Create the antecedent clauses
//
List<GroundedClause> antecedent = new List<GroundedClause>();
antecedent.Add(congruent1);
antecedent.Add(congruent2);
//
// Create the consequent clause
//
Congruent newCC = null;
if (congruent1 is CongruentSegments)
{
CongruentSegments css1 = congruent1 as CongruentSegments;
CongruentSegments css2 = congruent2 as CongruentSegments;
Segment shared = css1.SegmentShared(css2);
newCC = new AlgebraicCongruentSegments(css1.OtherSegment(shared), css2.OtherSegment(shared));
}
else if (congruent1 is CongruentAngles)
{
CongruentAngles cas1 = congruent1 as CongruentAngles;
CongruentAngles cas2 = congruent2 as CongruentAngles;
Angle shared = cas1.AngleShared(cas2);
newCC = new AlgebraicCongruentAngles(cas1.OtherAngle(shared), cas2.OtherAngle(shared));
}
if (newCC == null)
{
System.Diagnostics.Debug.WriteLine("");
throw new NullReferenceException("Unexpected Problem in Atomic substitution...");
}
newGrounded.Add(new GenericInstantiator.EdgeAggregator(antecedent, newCC, annotation));
return newGrounded;
}