public void AsyncStart(MeshTreeBase tree)
{
if (m_event == null)
{
m_event = new ManualResetEvent(false);
}
m_event.Reset();
m_tree = tree;
ThreadPool.QueueUserWorkItem(s_searchCallback, this);
}
/// <summary>
/// Cast a ray against a mesh tree object.
/// The return value indicates whether the raycast hit or not.
/// After this function is called, you can access "isHit", "hitPosition" and "hitNormal" properties.
/// </summary>
/// <param name="tree">A MeshTree object.</param>
/// <param name="origin">The origin point of the ray in the local space of the mesh object.</param>
/// <param name="direction">The direction of the ray in the local space of the mesh object.</param>
/// <param name="distance">The length of the ray.</param>
/// <param name="cullBackFace">If set to <c>true</c> cull back face.</param>
public bool Raycast(MeshTreeBase tree, Vector3 origin, Vector3 direction, float distance, bool cullBackFace)
{
this.origin = origin;
distance *= direction.magnitude;
direction.Normalize();
this.direction = direction;
m_distance = distance;
hitDistance = distance;
m_cullBackFace = cullBackFace;
tree.Raycast(this);
return(isHit);
}
/// <summary>
/// Cast a ray against a mesh tree object in a background thread.
/// You can wait for the raycast to be done by calling Wait() function.
/// Also, you can check if the raycast is done or not by calling IsDone() function.
/// Please be noted that "isHit", "hitPosition" and "hitNormal" properties are invalid until the raycast is done
/// </summary>
/// <param name="tree">A MeshTree object.</param>
/// <param name="origin">The origin point of the ray in the local space of the mesh object.</param>
/// <param name="direction">The direction of the ray in the local space of the mesh object.</param>
/// <param name="distance">The length of the ray.</param>
/// <param name="cullBackFace">If set to <c>true</c> cull back face.</param>
public void AsyncRaycast(MeshTreeBase tree, Vector3 origin, Vector3 direction, float distance, bool cullBackFace)
{
if (m_event == null)
{
m_event = new ManualResetEvent(false);
}
m_event.Reset();
m_tree = tree;
distance *= direction.magnitude;
direction.Normalize();
this.origin = origin;
this.direction = direction;
m_distance = distance;
hitDistance = distance;
m_cullBackFace = cullBackFace;
ThreadPool.QueueUserWorkItem(s_raycastCallback, this);
}
private void Search()
{
try
{
m_tree.Search(this);
m_tree = null;
}
catch (Exception e)
{
Debug.LogException(e);
m_event.Set();
throw e;
}
finally
{
m_event.Set();
}
}
private void Raycast()
{
try
{
m_tree.Raycast(this);
m_tree = null;
}
catch (Exception e)
{
if (Debug.isDebugBuild || Application.isEditor)
{
Debug.LogException(e);
}
throw e;
}
finally
{
m_event.Set();
}
}
