private static ClipPlaneVertices GetClipPlaneAt(Vector3 pos)
{
var clipPlane = new ClipPlaneVertices();
if (Camera.main == null)
{
return(clipPlane);
}
var transform = Camera.main.transform;
var nearClipPlaneOffset = Camera.main.nearClipPlane;
clipPlane.UpperLeft = pos - transform.right * halfPlaneWidth;
clipPlane.UpperLeft += transform.up * halfPlaneHeight;
clipPlane.UpperLeft += transform.forward * nearClipPlaneOffset;
clipPlane.UpperRight = pos + transform.right * halfPlaneWidth;
clipPlane.UpperRight += transform.up * halfPlaneHeight;
clipPlane.UpperRight += transform.forward * nearClipPlaneOffset;
clipPlane.LowerLeft = pos - transform.right * halfPlaneWidth;
clipPlane.LowerLeft -= transform.up * halfPlaneHeight;
clipPlane.LowerLeft += transform.forward * nearClipPlaneOffset;
clipPlane.LowerRight = pos + transform.right * halfPlaneWidth;
clipPlane.LowerRight -= transform.up * halfPlaneHeight;
clipPlane.LowerRight += transform.forward * nearClipPlaneOffset;
return(clipPlane);
}
private float CheckCameraClipPlane(Vector3 from, Vector3 to)
{
var closestDistance = -1f;
RaycastHit hitInfo;
ClipPlaneVertices clipPlane = GetClipPlaneAt(to);
Debug.DrawLine(clipPlane.UpperLeft, clipPlane.UpperRight);
Debug.DrawLine(clipPlane.UpperRight, clipPlane.LowerRight);
Debug.DrawLine(clipPlane.LowerRight, clipPlane.LowerLeft);
Debug.DrawLine(clipPlane.LowerLeft, clipPlane.UpperLeft);
Debug.DrawLine(from, to, Color.red);
Debug.DrawLine(from - transform.right * halfPlaneWidth + transform.up * halfPlaneHeight, clipPlane.UpperLeft, Color.cyan);
Debug.DrawLine(from + transform.right * halfPlaneWidth + transform.up * halfPlaneHeight, clipPlane.UpperRight, Color.cyan);
Debug.DrawLine(from - transform.right * halfPlaneWidth - transform.up * halfPlaneHeight, clipPlane.LowerLeft, Color.cyan);
Debug.DrawLine(from + transform.right * halfPlaneWidth - transform.up * halfPlaneHeight, clipPlane.LowerRight, Color.cyan);
if (Physics.Linecast(from, to, out hitInfo) && hitInfo.collider.tag != PlayerTag)
{
closestDistance = hitInfo.distance - Camera.main.nearClipPlane;
}
#region Don't like this. It's ... icky
if (Physics.Linecast(from - transform.right * halfPlaneWidth + transform.up * halfPlaneHeight, clipPlane.UpperLeft, out hitInfo) && hitInfo.collider.tag != PlayerTag)
{
if (hitInfo.distance < closestDistance || closestDistance == -1f)
{
closestDistance =
Vector3.Distance(hitInfo.point + transform.right * halfPlaneWidth - transform.up * halfPlaneHeight, from);
}
}
if (Physics.Linecast(from + transform.right * halfPlaneWidth + transform.up * halfPlaneHeight, clipPlane.UpperLeft, out hitInfo) && hitInfo.collider.tag != PlayerTag)
{
if (hitInfo.distance < closestDistance || closestDistance == -1f)
{
closestDistance =
Vector3.Distance(hitInfo.point - transform.right * halfPlaneWidth - transform.up * halfPlaneHeight, from);
}
}
if (Physics.Linecast(from - transform.right * halfPlaneWidth - transform.up * halfPlaneHeight, clipPlane.UpperLeft, out hitInfo) && hitInfo.collider.tag != PlayerTag)
{
if (hitInfo.distance < closestDistance || closestDistance == -1f)
{
closestDistance =
Vector3.Distance(hitInfo.point + transform.right * halfPlaneWidth + transform.up * halfPlaneHeight, from);
}
}
if (Physics.Linecast(from + transform.right * halfPlaneWidth - transform.up * halfPlaneHeight, clipPlane.UpperLeft, out hitInfo) && hitInfo.collider.tag != PlayerTag)
{
if (hitInfo.distance < closestDistance || closestDistance == -1f)
{
closestDistance =
Vector3.Distance(hitInfo.point - transform.right * halfPlaneWidth + transform.up * halfPlaneHeight, from);
}
}
#endregion
return(closestDistance);
}
