void CheckDrawLine()
{
bool wipe = false;
if (Input.GetMouseButtonDown(0))
{
//Started drawing!
drawing = true;
//start drawing lines
Ray ray = cam.ViewportPointToRay(new Vector3(0.5f, 0.5f, 0));
RaycastHit hit;
if (Physics.Raycast(ray, out hit, 1000, mask))
{
Nodes.Node n = Nodes.FindNearestNode(hit.point);
//check this is a valid pos
if (Nodes.CheckValidNode(n))
{
lineId = Lines.RegisterNewLine();
startPos = n.pos;
startNodeId = n.uId;
Lines.AddPoint(n, lineId);
}
else
{
//else, fail out
drawing = false;
}
}
}
if (Input.GetMouseButtonUp(0))
{
if (drawing)
{
//Add last point
Ray ray = cam.ViewportPointToRay(new Vector3(0.5f, 0.5f, 0));
RaycastHit hit;
if (Physics.Raycast(ray, out hit, 1000, mask))
{
Nodes.Node n = Nodes.FindNearestNode(hit.point);
if (n.uId == startNodeId)
{
wipe = true;
}
else
{
//check this is a valid pos
if (Nodes.CheckValidNode(n))
{
Lines.AddPoint(n, lineId);
}
else
{
wipe = true;
}
}
}
if (wipe)
{
//kill the line
Lines.DeleteLine(lineId);
}
else
{
lastLineId = lineId;
}
//Released!
drawing = false;
lineId = -1;
}
}
if (Input.GetMouseButton(0))
{
if (drawing)
{
Ray ray = cam.ViewportPointToRay(new Vector3(0.5f, 0.5f, 0));
RaycastHit hit;
if (Physics.Raycast(ray, out hit, 1000, mask))
{
Vector3 point = hit.point;
Debug.DrawLine(startPos, point, Color.red);
}
}
}
}