/** If a trajectory has only one node, the player is not displayed. To fix that situation, the node is duplicated with a slightly different location.
* Both old and new nodes are linked through a side.
*
* @param scene
*/
public static void fixSingleNode(Scene scene)
{
Trajectory trajectory = scene.getTrajectory();
if (trajectory != null)
{
if (trajectory.getNodes().Count == 1)
{
Trajectory.Node node1 = trajectory.getNodes()[0];
trajectory.addNode(node1.getID() + "Dupl", node1.getX() + 1, node1.getY(), node1.getScale());
trajectory.addSide(node1.getID(), node1.getID() + "Dupl", 1);
}
}
}
/**
* Checks consistency between nodes and references in sides. If a node is referenced to but does not exist, it is created on position 400,300.
* @param scene
*/
private static void fixMissingNodes(Scene scene)
{
Trajectory trajectory = scene.getTrajectory();
if (trajectory != null)
{
List <string> nodeIds = new List <string>();
// Put all node ids referenced in sides in a single array list
foreach (Trajectory.Side side in trajectory.getSides())
{
if (!nodeIds.Contains(side.getIDStart()))
{
nodeIds.Add(side.getIDStart());
}
if (!nodeIds.Contains(side.getIDEnd()))
{
nodeIds.Add(side.getIDEnd());
}
}
// Remove all ids belonging to an existing nodes. The result is a list containing the strings of
// all missing nodes
foreach (Trajectory.Node node in trajectory.getNodes())
{
if (nodeIds.Contains(node.getID()))
{
nodeIds.Remove(node.getID());
}
}
// Add all missing nodes to the trajectory
foreach (string missingNodeId in nodeIds)
{
if (trajectory.getNodes().Count > 0)
{
trajectory.addNode(missingNodeId, 400, 300, 1);
}
}
}
}
/**
* Ensures that all nodes in a trajectory have a different location. If two nodes are found in the same position, first's x coordinate
* is incremented by 1 px. This is important as nodes with equal position makes the trajectory algorithm to crash.
* @param scene
*/
private static void fixNodesWithSameLocation(Scene scene)
{
Trajectory trajectory = scene.getTrajectory();
if (trajectory != null)
{
// Iterate through nodes.
for (int i = 0; i < trajectory.getNodes().Count; i++)
{
Trajectory.Node node1 = trajectory.getNodes()[i];
for (int j = 0; j < trajectory.getNodes().Count; j++)
{
Trajectory.Node node2 = trajectory.getNodes()[j];
if (i != j && node1.getX() == node2.getX() && node1.getY() == node2.getY())
{
node1.setValues(node1.getX() + 1, node1.getY(), node1.getScale());
j = 0;
}
}
}
}
}
/**
* Checks pairs of nodes with duplicate ids. One of the nodes is removed.
* @param nodes
*/
private static void fixDuplicateNodes(Scene scene)
{
Trajectory trajectory = scene.getTrajectory();
if (trajectory != null)
{
// Iterate through nodes.
for (int i = 0; i < trajectory.getNodes().Count; i++)
{
Trajectory.Node node1 = trajectory.getNodes()[i];
for (int j = 0; j < trajectory.getNodes().Count; j++)
{
Trajectory.Node node2 = trajectory.getNodes()[j];
if (i != j && node1.getID().Equals(node2.getID()))
{
trajectory.getNodes().RemoveAt(j);
i--; j--;
}
}
}
}
}
public object DOMParse(XmlElement element, params object[] parameters)
{
Trajectory trajectory = new Trajectory();
foreach (XmlElement el in element.SelectNodes("node"))
{
string id = el.GetAttribute("id");
int x = ExParsers.ParseDefault(el.GetAttribute("x"), 0),
y = ExParsers.ParseDefault(el.GetAttribute("y"), 0);
float scale = ExParsers.ParseDefault(el.GetAttribute("scale"), CultureInfo.InvariantCulture, 1.0f);
scale = Mathf.Max(0, scale);
trajectory.addNode(id, x, y, scale);
}
foreach (XmlElement el in element.SelectNodes("side"))
{
string idStart = el.GetAttribute("idStart");
string idEnd = el.GetAttribute("idEnd");
int length = ExParsers.ParseDefault(el.GetAttribute("length"), -1);
trajectory.addSide(idStart, idEnd, length);
}
var initialNode = element.SelectSingleNode("initialnode") as XmlElement;
if (initialNode != null)
{
trajectory.setInitial(initialNode.GetAttribute("id"));
}
if (trajectory.getNodes().Count != 0)
{
// trajectory.deleteUnconnectedNodes();
return(trajectory);
}
return(null);
}
public object DOMParse(XmlElement element, params object[] parameters)
{
Trajectory trajectory = new Trajectory();
foreach (XmlElement el in element.SelectNodes("node"))
{
string id = el.GetAttribute("id") ?? "";
int x = int.Parse(el.GetAttribute("x") ?? "0"),
y = int.Parse(el.GetAttribute("y") ?? "0");
float scale = float.Parse(el.GetAttribute("scale") ?? "1.0", CultureInfo.InvariantCulture);
trajectory.addNode(id, x, y, scale);
}
foreach (XmlElement el in element.SelectNodes("side"))
{
string idStart = el.GetAttribute("idStart") ?? "";
string idEnd = el.GetAttribute("idEnd") ?? "";
int length = int.Parse(el.GetAttribute("length") ?? "-1");
trajectory.addSide(idStart, idEnd, length);
}
var initialNode = element.SelectSingleNode("initialnode");
if (initialNode != null)
{
trajectory.setInitial(element.GetAttribute("id") ?? "");
}
if (trajectory.getNodes().Count != 0)
{
trajectory.deleteUnconnectedNodes();
return(trajectory);
}
return(null);
}