/// <summary>
/// Initializes a new instance of the <see cref="LineIntersection"/> structure with the
/// specified shared coordinates, relative locations, and spatial relationship between the
/// intersected lines.</summary>
/// <param name="shared">
/// The <see cref="PointD"/> coordinates shared by the two line segments or their infinite
/// extensions.</param>
/// <param name="first">
/// The location of the <see cref="Shared"/> coordinates relative to the first line segment.
/// </param>
/// <param name="second">
/// The location of the <see cref="Shared"/> coordinates relative to the second line
/// segment.</param>
/// <param name="relation">
/// The spatial relationship between the two line segments.</param>
public LineIntersection(PointD?shared,
LineLocation first, LineLocation second, LineRelation relation)
{
Shared = shared;
First = first;
Second = second;
Relation = relation;
}
void OnTriggerStay(Collider other)
{
if (other.gameObject.tag == "LineDrawer")
{
LineRelation lineRelation = LineRelation.FindRelation(gameObject, other.gameObject);
if (lineRelation != null)
{
lineRelation.lineRenderer.SetPosition(0, transform.position);
lineRelation.lineRenderer.SetPosition(1, other.gameObject.transform.position);
}
}
}
void OnTriggerExit(Collider other)
{
if (other.gameObject.tag == "LineDrawer")
{
LineRelation lineRelation = LineRelation.FindRelation(gameObject, other.gameObject);
if (lineRelation != null)
{
LineRenderer lineRenderer = lineRelation.lineRenderer;
lineRelationList.Remove(lineRelation);
Destroy(lineRenderer.gameObject);
}
}
}
void OnTriggerEnter(Collider other)
{
if (other.gameObject.tag == "LineDrawer")
{
if (LineRelation.FindRelation(gameObject, other.gameObject) == null)
{
GameObject newLineRendererObject = Instantiate <GameObject>(lineRendrerPrefab);
newLineRendererObject.transform.SetParent(gameObject.transform);
newLineRendererObject.transform.position = gameObject.transform.position;
LineRenderer newLineRenderer = newLineRendererObject.GetComponent <LineRenderer>();
newLineRenderer.SetPosition(0, transform.position);
newLineRenderer.SetPosition(1, other.gameObject.transform.position);
lineRelationList.Add(new LineRelation(gameObject, other.gameObject, newLineRenderer));
}
}
}
public static LineRelation FindRelation(GameObject obj1, GameObject obj2)
{
LineRelation res = null;
bool found = false;
int i = 0;
while (!found && i < lineRelationList.Count)
{
if (lineRelationList[i].TestEqual(obj1, obj2))
{
res = lineRelationList[i];
found = true;
}
i++;
}
return(res);
}
/// <summary>
/// 与线的关系
/// </summary>
/// <param name="line"></param>
/// <returns></returns>
public override LineRelation CheckLineRelation(Line3D line)
{
LineRelation lr = base.CheckLineRelation(line);
if (lr == LineRelation.Intersect)
{
Double3 aixsVector = line.AixsVector(this.StartPoint);
if (Double3.Dot(aixsVector, this.NormalizedDir) > 0)
{
return(LineRelation.Detach);
}
else
{
return(LineRelation.Intersect);
}
}
else
{
return(lr);
}
}
/// <summary>
/// 与线的关系
/// </summary>
/// <param name="line"></param>
/// <returns></returns>
public override LineRelation CheckLineRelation(Line3D line)
{
LineRelation lr = base.CheckLineRelation(line);
if (lr == LineRelation.Intersect)
{
// 计算轴向量
Double3 aixsVector1 = line.AixsVector(this.StartPoint);
Double3 aixsVector2 = line.AixsVector(this.EndPoint);
// 方向相反相交
if (Double3.Dot(aixsVector1, aixsVector2) <= 0)
{
return(LineRelation.Intersect);
}
else
{
return(LineRelation.Detach);
}
}
else
{
return(lr);
}
}
/// <overloads>
/// Initializes a new instance of the <see cref="LineIntersection"/> structure.</overloads>
/// <summary>
/// Initializes a new instance of the <see cref="LineIntersection"/> structure with the
/// specified spatial relationship between the intersected lines.</summary>
/// <param name="relation">
/// The spatial relationship between the two line segments.</param>
/// <remarks>
/// The <see cref="First"/>, <see cref="Second"/>, and <see cref="Shared"/> properties
/// remain at their default values. Use this constructor for collinear or parallel line
/// segments that share no points.</remarks>
public LineIntersection(LineRelation relation) : this(null, 0, 0, relation)
{
}
