public static void Node_Add(SPData sPData)
{
SceneView.currentDrawingSceneView.Repaint();
EditorGUIUtility.AddCursorRect(Camera.current.pixelRect, MouseCursor.ArrowPlus);
int nIndex = 0;
string vertexPostion = "init";
Vector3 vert = Vector3.zero;
if (sPData.Nodes.Count >= 2)
{
vert = HandleUtility.ClosestPointToPolyLine(sPData.Vertices.ToArray());
if (sPData.Close)
{
nIndex = BranchClosestNodeToVertex(sPData, vert);
vertexPostion = "mid";
}
else
{
if (Vector3.Distance(sPData.FirstNode.Point.position, vert) <= float.Epsilon)
{
nIndex = 0;
vertexPostion = "beg";
}
else if (Vector3.Distance(sPData.LastNode.Point.position, vert) <= float.Epsilon)
{
nIndex = sPData.Nodes.Count - 1;
vertexPostion = "end";
}
else
{
nIndex = BranchClosestNodeToVertex(sPData, vert);
vertexPostion = "mid";
}
}
}
// convert mouse position to vector3 world space
Func <Vector2, Vector3> MousePos_To_Vector3 = delegate(Vector2 mousePosition)
{
float distance = 0.0f;
RaycastHit Hit;
Ray ray = new Ray();
Plane m_Plane;
Vector3 hitPoint = Vector3.zero;
ray = HandleUtility.GUIPointToWorldRay(mousePosition);
if (Camera.current.transform.eulerAngles == new Vector3(0, 0, 0) || Camera.current.transform.eulerAngles == new Vector3(0, 180, 0))
{
m_Plane = new Plane(Vector3.forward, Vector3.zero);
}
else if (Camera.current.transform.eulerAngles == new Vector3(90, 0, 0) || Camera.current.transform.eulerAngles == new Vector3(270, 0, 0))
{
m_Plane = new Plane(Vector3.up, Vector3.zero);
}
else if (Camera.current.transform.eulerAngles == new Vector3(0, 90, 0) || Camera.current.transform.eulerAngles == new Vector3(0, 270, 0))
{
m_Plane = new Plane(Vector3.right, Vector3.zero);
}
else
{
m_Plane = new Plane(Vector3.up, Vector3.zero);
}
if (Physics.Raycast(ray, out Hit))
{
hitPoint = Hit.point;
}
else if (m_Plane.Raycast(ray, out distance))
{
hitPoint = ray.GetPoint(distance);
}
return(hitPoint);
};
// Add node to branch when click is performed
Action <Vector3> Add_Node_Click = delegate(Vector3 pos)
{
if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
Undo.RecordObject(sPData.SplinePlus, "Node added");
Func <string, Vector3, Quaternion, Transform, Transform> CreatePoint = delegate(string name, Vector3 Pos, Quaternion Rot, Transform Parent)
{
var Obj = new GameObject(name);
Obj.hideFlags = HideFlags.HideInHierarchy;
Obj.transform.position = Pos;
Obj.transform.rotation = Rot;
Obj.transform.parent = Parent;
return(Obj.transform);
};
var node = new Node();
node._Type = sPData.SplineSettings.NodeType;
node.Point = CreatePoint("p", pos, Quaternion.identity, sPData.SplinePlus.gameObject.transform);
node.Point1 = CreatePoint("p1", node.Point.position, Quaternion.identity, node.Point);
node.Point2 = CreatePoint("p2", node.Point.position, Quaternion.identity, node.Point);
if (sPData.Close)
{
SplinePlusAPI.Add_Node_At_Index(sPData, node, nIndex + 1);
}
else
{
if (vertexPostion == "beg" || vertexPostion == "init")
{
SplinePlusAPI.Add_Node_Beginning(sPData, node);
}
else if (vertexPostion == "end")
{
SplinePlusAPI.Add_Node_End(sPData, node);
}
else
{
SplinePlusAPI.Add_Node_At_Index(sPData, node, nIndex + 1);
}
}
}
};
//perform node adding when click event happens
if (vertexPostion == "init")
{
var hitPoint = MousePos_To_Vector3(Event.current.mousePosition);
Handles.color = Color.yellow;
Handles.SphereHandleCap(0, hitPoint, Quaternion.identity, sPData.SplineSettings.GizmosSize * 2, EventType.Repaint);
Add_Node_Click(hitPoint);
}
// node added to the beginning of the branch
else if (vertexPostion == "beg")
{
var pos = MousePos_To_Vector3(Event.current.mousePosition);
var node = sPData.Nodes[0];
Preview(sPData, node.Point.position, pos);
Add_Node_Click(pos);
}
// node added to the end of the branch
else if (vertexPostion == "end")
{
var pos = MousePos_To_Vector3(Event.current.mousePosition);
var node = sPData.Nodes[sPData.Nodes.Count - 1];
Preview(sPData, node.Point.position, pos);
Add_Node_Click(pos);
}
// node added in the middle of the branch
else
{
Handles.color = Color.yellow;
Handles.SphereHandleCap(0, vert, Quaternion.identity, sPData.SplineSettings.GizmosSize * 2, EventType.Repaint);
Add_Node_Click(vert);
}
}