public virtual Segment2D ClosestEdgeTo(Segment2D segment)
{
Vector2 closestVertex = ClosestVertexTo(segment);
int vertexIndex = GetVertexIndex(closestVertex);
int previousVertex = vertexIndex > 0 ? vertexIndex - 1 : Vertices.Length - 1;
int nextVertex = vertexIndex < Vertices.Length - 1 ? vertexIndex + 1 : 0;
float previousDistance = segment.PerpendicularDistance(Vertices[previousVertex]);
float nextDistance = segment.PerpendicularDistance(Vertices[nextVertex]);
if (previousDistance >= nextDistance)
{
return(new Segment2D(closestVertex, Vertices[previousVertex]));
}
else
{
return(new Segment2D(closestVertex, Vertices[nextVertex]));
}
}
/// <summary>
/// Returns the furthest point of this polygon to a segment.
/// </summary>
/// <param name="segment"></param>
/// <returns>The furthest point of this polygon to another segment.</returns>
public virtual Vector2 FurthestPointFrom(Segment2D segment)
{
float furthestDistance = int.MinValue;
int index = 0;
for (int i = 0; i < Vertices.Length; i++)
{
float distance = segment.PerpendicularDistance(Vertices[i]);
if (distance > furthestDistance)
{
furthestDistance = distance;
index = i;
}
}
return(Vertices[index]);
}
/// <summary>
/// Returns the furthest Vertex of this polygon to a segment.
/// </summary>
/// <param name="segment"></param>
/// <returns>The furthest Vertex of this polygon to a segment.</returns>
public virtual Vector2 FurthestVertexFrom(Segment2D segment)
{
return(Hedra.FurthestObject(Vertices.ToList(), (vertex => segment.PerpendicularDistance(vertex))));
}
