private static Arc GetInscribedInterceptedArc(Circle circle, Angle angle)
{
Point endpt1, endpt2;
Point pt1, pt2;
circle.FindIntersection(angle.ray1, out pt1, out pt2);
endpt1 = pt1.StructurallyEquals(angle.GetVertex()) ? pt2 : pt1;
circle.FindIntersection(angle.ray2, out pt1, out pt2);
endpt2 = pt1.StructurallyEquals(angle.GetVertex()) ? pt2 : pt1;
// Need to check if the angle is a diameter and create a semicircle
Segment chord = new Segment(endpt1, endpt2);
if (circle.DefinesDiameter(chord))
{
Point opp = circle.Midpoint(endpt1, endpt2, angle.GetVertex());
Semicircle semi = new Semicircle(circle, endpt1, endpt2, circle.OppositePoint(opp), chord);
//Find a defined semicircle of the figure that lies on the same side
Semicircle sameSideSemi = figureSemicircles.Where(s => semi.SameSideSemicircle(s)).FirstOrDefault();
//If none were found, should we throw an exception or just return the original semi?
if (sameSideSemi == null)
{
return(semi);
}
else
{
return(sameSideSemi);
}
}
//Initially assume intercepted arc is the minor arc
Arc intercepted = null;
intercepted = new MinorArc(circle, endpt1, endpt2);
//Verify assumption, create major arc if necessary
if (Arc.BetweenMinor(angle.GetVertex(), intercepted))
{
intercepted = new MajorArc(circle, endpt1, endpt2);
}
return(intercepted);
}
private static Arc GetInscribedInterceptedArc(Circle circle, Angle angle)
{
Point endpt1, endpt2;
Point pt1, pt2;
circle.FindIntersection(angle.ray1, out pt1, out pt2);
endpt1 = pt1.StructurallyEquals(angle.GetVertex()) ? pt2 : pt1;
circle.FindIntersection(angle.ray2, out pt1, out pt2);
endpt2 = pt1.StructurallyEquals(angle.GetVertex()) ? pt2 : pt1;
// Need to check if the angle is a diameter and create a semicircle
Segment chord = new Segment(endpt1, endpt2);
if (circle.DefinesDiameter(chord))
{
Point opp = circle.Midpoint(endpt1, endpt2, angle.GetVertex());
Semicircle semi = new Semicircle(circle, endpt1, endpt2, circle.OppositePoint(opp), chord);
//Find a defined semicircle of the figure that lies on the same side
Semicircle sameSideSemi = figureSemicircles.Where(s => semi.SameSideSemicircle(s)).FirstOrDefault();
//If none were found, should we throw an exception or just return the original semi?
if (sameSideSemi == null) return semi;
else return sameSideSemi;
}
//Initially assume intercepted arc is the minor arc
Arc intercepted = null;
intercepted = new MinorArc(circle, endpt1, endpt2);
//Verify assumption, create major arc if necessary
if (Arc.BetweenMinor(angle.GetVertex(), intercepted)) intercepted = new MajorArc(circle, endpt1, endpt2);
return intercepted;
}
private Semicircle CreateImpliedSemicircle(Circle circle, Segment diameter, Point oppositePnt)
{
Point midpt = circle.Midpoint(diameter.Point1, diameter.Point2);
//Create semicircles from the midpt and the given oppositePnt, make sure they do not form the same side
Semicircle semi1 = new Semicircle(circle, diameter.Point1, diameter.Point2, midpt, diameter);
if (semi1.SameSideSemicircle(new Semicircle(circle, diameter.Point1, diameter.Point2, oppositePnt, diameter)))
{
semi1 = new Semicircle(circle, diameter.Point1, diameter.Point2, circle.OppositePoint(midpt), diameter);
}
return semi1;
}
