private Term[] GetConcreteAnnotationTerm(Coplanarity coplanarity)
{
var constraints = new List <Term>();
if (coplanarity.Elements.Length >= 2)
{
var terms = new List <Term>();
foreach (var pair in coplanarity.Elements.SeqPairs())
{
var fst = pair.Item1;
var snd = pair.Item2;
var p1 = fst.Center;
var p2 = snd.Center;
var n1 = fst.Normal;
var n2 = snd.Normal;
constraints.AddRange(VectorParallelism(n1, n2));
constraints.AddRange(PointsOnPlaneConstraint(p1, n1, new TVec[] { p2 }));
constraints.AddRange(PointsOnPlaneConstraint(p2, n2, new TVec[] { p1 }));
}
}
return(constraints.ToArray());
}
private Term[] GetConcreteAnnotationTerm(Coplanarity coplanarity)
{
var constraints = new List <Term>();
if (coplanarity.Elements.Length >= 2)
{
var terms = new List <Term>();
foreach (var pair in coplanarity.Elements.SeqPairs())
{
var fst = pair.Item1;
var snd = pair.Item2;
var p1 = fst.Center;
var p2 = snd.Center;
var n1 = fst.Normal;
var n2 = snd.Normal;
var pts1 = GetPointsOnPlane(p1, n1);
var pts2 = GetPointsOnPlane(p2, n2);
var planarity1 = PointsOnPlaneConstraint(p1, n1, pts2);
var planarity2 = PointsOnPlaneConstraint(p2, n2, pts1);
constraints.AddRange(planarity1);
constraints.AddRange(planarity2);
}
}
return(constraints.ToArray());
}
private IEnumerable <Annotation> SelectBestCandidates(IEnumerable <CandidatePair> candidates)
{
// eliminate containers that are not visible because their normal faces away from the viewer
// (positive Z coordinate).
var withVisibleContainers = from pair in candidates
where pair.Container.NormalResult.Z < 0
select pair;
if (withVisibleContainers.Any())
{
// choose the pair such that the projection of the containee's center on the container's normal
// has the lowest value
var bestCandidate = withVisibleContainers.Minimizer(ContainedCenterOnContainerAxisProjection);
// construct the coplanarity annotation and return a singleton enumerable containing it.
var annotation = new Coplanarity {
Elements = new FeatureCurve[] { bestCandidate.Container, bestCandidate.Contained }
};
return(Utils.Enumerable.Singleton(annotation));
}
else
{
return(Enumerable.Empty <Annotation>());
}
}
