public Edge(Vertex v1, Vertex v2)
{
Debug.LogFormat("Creating new edge between {0} and {1}", v1.number, v2.number);
this.v1 = v1;
this.v2 = v2;
v1.AddEdge(this);
v2.AddEdge(this);
linepiece = CalculateLinepieceValues();
lineObject = new GameObject();
lineObject.name = "EdgeDebugObject";
lineRenderer = lineObject.AddComponent <LineRenderer>();
lineRenderer.material = Paper.Instance.LineMaterial;
lineRenderer.startWidth = 0.05f;
lineRenderer.endWidth = 0.05f;
UpdateLineRenderer(null);
debugText = lineObject.AddComponent <TextMesh>();
debugText.color = Color.black;
debugText.characterSize = 0.2f;
lineObject.transform.position = (v1.transform.position + v2.transform.position) / 2f;
Paper.Instance.NewEdge(this, out number);
}
public static Vector2 MirrorPointInLinepiece(Linepiece linepiece, Vector2 point)
{
Vector2 closestPointOnLine = ClosestPointOnLinepiece(linepiece, point);
Vector2 mirroredPoint = point + 2f * (closestPointOnLine - point);
return(mirroredPoint);
}
public static Vector2 ClosestPointOnLinepiece(Linepiece linepiece, Vector2 point)
{
Vector2 ab = linepiece.End - linepiece.Start;
Vector2 ap = point - linepiece.Start;
float abSquared = ab.x * ab.x + ab.y * ab.y;
float dotABAP = ab.x * ap.x + ab.y * ap.y;
// Make sure that we don't divide by zero here
// If so, just return the original point
if (Mathf.Approximately(abSquared, 0f))
{
return(linepiece.Start);
}
float ratio = dotABAP / abSquared;
if (ratio < 0f)
{
return(linepiece.Start);
}
else if (ratio > 1f)
{
return(linepiece.End);
}
Vector2 closestPoint = linepiece.Start + ab * ratio;
return(closestPoint);
}
public static bool LinepieceIntersectWithLine(Linepiece l1, Line l2, out Vector2 intersection)
{
intersection = Vector2.zero;
if (LinesIntersect(l1, l2, out intersection))
{
return(l1.ContainsPoint(intersection));
}
return(false);
}
public static bool LinepiecesIntersect(Linepiece l1, Linepiece l2, out Vector2 intersection)
{
intersection = Vector2.zero;
// There is one (unlikely) edge case: two equidirectional linepieces that overlap
// LinesIntersect will return a random point on either line as the intersection point
// This point might not lie on both linepieces
// This could result in a false evaluation, while the linepieces do overlap
if (LinesIntersect(l1, l2, out intersection))
{
return(l1.ContainsPoint(intersection) && l2.ContainsPoint(intersection));
}
return(false);
}
public void UpdateLinepiece()
{
linepiece = CalculateLinepieceValues();
}
public static float DistancePointToLinepiece(Linepiece linepiece, Vector2 point)
{
Vector2 closestPoint = ClosestPointOnLinepiece(linepiece, point);
return(Vector2.Distance(closestPoint, point));
}