public override bool Equals(Object clause)
{
CongruentArcs cts = clause as CongruentArcs;
if (cts == null)
{
return(false);
}
return(this.ca1.Equals(cts.ca1) || this.ca2.Equals(cts.ca2) ||
this.ca2.Equals(cts.ca1) || this.ca1.Equals(cts.ca2));
}
// A
// /)
// / )
// / )
// center: O )
// \ )
// \ )
// \)
// C
//
// D
// /)
// / )
// / )
// center: Q )
// \ )
// \ )
// \)
// F
//
// Congruent(Arc(A, C), Arc(D, F)) -> Congruent(Segment(AC), Segment(DF))
//
private static List<EdgeAggregator> InstantiateConversePartOfTheorem(CongruentArcs cas)
{
List<EdgeAggregator> newGrounded = new List<EdgeAggregator>();
//
// Acquire the chords for this specific pair of arcs (endpoints of arc and segment are the same).
//
Segment chord1 = Segment.GetFigureSegment(cas.ca1.endpoint1, cas.ca1.endpoint2);
Segment chord2 = Segment.GetFigureSegment(cas.ca2.endpoint1, cas.ca2.endpoint2);
if (chord1 == null || chord2 == null) return newGrounded;
// Construct the congruence
GeometricCongruentSegments gcss = new GeometricCongruentSegments(chord1, chord2);
// For hypergraph
List<GroundedClause> antecedent = new List<GroundedClause>();
antecedent.Add(chord1);
antecedent.Add(chord2);
antecedent.Add(cas);
newGrounded.Add(new EdgeAggregator(antecedent, gcss, forwardAnnotation));
return newGrounded;
}
// A
// /)
// / )
// / )
// center: O )
// \ )
// \ )
// \)
// C
//
// D
// /)
// / )
// / )
// center: Q )
// \ )
// \ )
// \)
// F
//
// Congruent(Arc(A, C), Arc(D, F)) -> Congruent(Angle(AOC), Angle(DQF))
//
private static List<EdgeAggregator> InstantiateConversePartOfTheorem(CongruentArcs cas)
{
List<EdgeAggregator> newGrounded = new List<EdgeAggregator>();
//
// Get the radii (and determine if the exist in the figure)
//
Segment radius11;
Segment radius12;
cas.ca1.GetRadii(out radius11, out radius12);
if (radius11 == null || radius12 == null) return newGrounded;
Segment radius21;
Segment radius22;
cas.ca2.GetRadii(out radius21, out radius22);
if (radius21 == null || radius22 == null) return newGrounded;
//
// Acquire the central angles from the respoitory
//
Angle central1 = Angle.AcquireFigureAngle(new Angle(radius11, radius12));
Angle central2 = Angle.AcquireFigureAngle(new Angle(radius21, radius22));
if (central1 == null || central2 == null) return newGrounded;
GeometricCongruentAngles gcas = new GeometricCongruentAngles(central1, central2);
// For hypergraph
List<GroundedClause> antecedent = new List<GroundedClause>();
antecedent.Add(central1);
antecedent.Add(central2);
antecedent.Add(cas);
newGrounded.Add(new EdgeAggregator(antecedent, gcas, converseAnnotation));
return newGrounded;
}