//
// Just generate the new triangle
//
private static EdgeAggregator GenerateCongruentSides(Triangle tri, CongruentAngles cas)
{
GeometricCongruentSegments newConSegs = new GeometricCongruentSegments(tri.OtherSide(cas.ca1), tri.OtherSide(cas.ca2));
List<GroundedClause> antecedent = new List<GroundedClause>();
antecedent.Add(cas);
antecedent.Add(tri);
return new EdgeAggregator(antecedent, newConSegs, annotation);
}
//
// Checks for ASA given the 5 values
//
private static List<EdgeAggregator> InstantiateAAS(Triangle tri1, Triangle tri2,
CongruentAngles cas1, CongruentAngles cas2, CongruentSegments css)
{
List<EdgeAggregator> newGrounded = new List<EdgeAggregator>();
//
// All congruence pairs must minimally relate the triangles
//
if (!cas1.LinksTriangles(tri1, tri2)) return newGrounded;
if (!cas2.LinksTriangles(tri1, tri2)) return newGrounded;
if (!css.LinksTriangles(tri1, tri2)) return newGrounded;
// Is this angle an 'extension' of the actual triangle angle? If so, acquire the normalized version of
// the angle, using only the triangle vertices to represent the angle
Angle angle1Tri1 = tri1.NormalizeAngle(tri1.AngleBelongs(cas1));
Angle angle1Tri2 = tri2.NormalizeAngle(tri2.AngleBelongs(cas1));
Angle angle2Tri1 = tri1.NormalizeAngle(tri1.AngleBelongs(cas2));
Angle angle2Tri2 = tri2.NormalizeAngle(tri2.AngleBelongs(cas2));
// The angles for each triangle must be distinct
if (angle1Tri1.Equals(angle2Tri1) || angle1Tri2.Equals(angle2Tri2)) return newGrounded;
Segment segTri1 = tri1.GetSegment(css);
Segment segTri2 = tri2.GetSegment(css);
// ASA situations
if (segTri1.IsIncludedSegment(angle1Tri1, angle2Tri1)) return newGrounded;
if (segTri2.IsIncludedSegment(angle1Tri2, angle2Tri2)) return newGrounded;
// The segments for each triangle must be corresponding
if (segTri1.Equals(tri1.OtherSide(angle1Tri1)) && segTri2.Equals(tri2.OtherSide(angle2Tri2))) return newGrounded;
if (segTri1.Equals(tri1.OtherSide(angle2Tri1)) && segTri2.Equals(tri2.OtherSide(angle1Tri2))) return newGrounded;
//
// Construct the corrsesponding points between the triangles
//
List<Point> triangleOne = new List<Point>();
List<Point> triangleTwo = new List<Point>();
triangleOne.Add(angle1Tri1.GetVertex());
triangleTwo.Add(angle1Tri2.GetVertex());
triangleOne.Add(angle2Tri1.GetVertex());
triangleTwo.Add(angle2Tri2.GetVertex());
// We know the segment endpoint mappings above, now acquire the opposite point
triangleOne.Add(tri1.OtherPoint(angle1Tri1.GetVertex(), angle2Tri1.GetVertex()));
triangleTwo.Add(tri2.OtherPoint(angle1Tri2.GetVertex(), angle2Tri2.GetVertex()));
//
// Construct the new clauses: congruent triangles and CPCTC
//
GeometricCongruentTriangles gcts = new GeometricCongruentTriangles(new Triangle(triangleOne), new Triangle(triangleTwo));
// Hypergraph
List<GroundedClause> antecedent = new List<GroundedClause>();
antecedent.Add(tri1);
antecedent.Add(tri2);
antecedent.Add(cas1);
antecedent.Add(cas2);
antecedent.Add(css);
newGrounded.Add(new EdgeAggregator(antecedent, gcts, annotation));
// Add all the corresponding parts as new congruent clauses
newGrounded.AddRange(CongruentTriangles.GenerateCPCTC(gcts, triangleOne, triangleTwo));
return newGrounded;
}
