/// <summary>
/// Draw Scene GUI handles, circles and outlines for submesh vertices.
/// <summary>
public void OnSceneGUI()
{
//get world positions of vertices
allPoints = ConvertAllPoints();
//create a ray to get where we clicked in the scene view and pass in mouse position
Ray worldRay = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
RaycastHit hitInfo;
Event e = Event.current;
//this prevents selecting other objects in the scene
int controlID = GUIUtility.GetControlID(FocusType.Passive);
HandleUtility.AddDefaultControl(controlID);
//find index of closest vertex, if any
dragIndex = FindClosest();
if (!placing && e.type == EventType.keyDown && e.keyCode == KeyCode.Backspace)
{
e.Use();
Undo.RegisterCompleteObjectUndo(script, "Delete Vertex");
Undo.RecordObject(script.GetComponent <MeshFilter>().sharedMesh, "Delete Vertex");
DeleteSelected();
return;
}
//in the edit mode, ray hit something
if (placing)
{
Tools.current = Tool.None;
Handles.BeginGUI();
GUILayout.Window(2, new Rect(Screen.width - 157, Screen.height - 100, 100, 50), (id) =>
{
GUILayout.Label(editOnText);
}, "Control Info Box");
Handles.EndGUI();
if (Physics.Raycast(worldRay, out hitInfo))
{
//the actual hit position
mousePosition = hitInfo.point;
//place new point if the left mouse button was clicked
if (e.type == EventType.mouseUp && e.button == 0 && !e.alt)
{
Undo.RegisterCompleteObjectUndo(script, "Add Vertex");
//get current submesh vertex count
int currentCount = script.current.Count;
//create a new submesh, if control was hold in addition to the mouse click
//or if autoSplit is true and the current count exceeds splitAt
if ((e.control && currentCount >= 3) ||
(script.autoSplit && currentCount >= script.splitAt))
{
GameObject newObj = script.CreateSubMesh();
Undo.RegisterCreatedObjectUndo(newObj, "Add Vertex");
}
//call this method when you've used an event.
//the event's type will be set to EventType.Used,
//causing other GUI elements to ignore it
e.Use();
//add point to existing vertex, if near any
//but don't add it to the same submesh (closed mesh)
//otherwise just add a new vertex position
if (script.current.Contains(dragIndex))
{
script.AddPoint(script.transform.TransformPoint(script.list[dragIndex]));
}
else if (dragIndex >= 0)
{
script.AddPoint(dragIndex);
}
else
{
script.AddPoint(mousePosition);
}
//invoke new mesh calculation
Undo.RegisterCompleteObjectUndo(script.subMesh, "Add Vertex");
script.CreateMesh();
return;
}
}
}
//not in edit mode
if (!placing)
{
Handles.BeginGUI();
GUILayout.Window(2, new Rect(Screen.width - 200, Screen.height - 100, 100, 50), (id) =>
{
GUILayout.Label(editOffText);
}, "Control Info Box");
Handles.EndGUI();
//clicking near vertices will select them and show handles
if (e.type == EventType.mouseUp && e.button == 0 && !e.alt)
{
//select/unselect vertex point
if (dragIndex >= 0)
{
if (!selected.Contains(dragIndex))
{
selected.Add(dragIndex);
}
else
{
selected.Remove(dragIndex);
}
SceneView.RepaintAll();
}
else if (selected.Count == 0)
{
Selection.activeObject = null;
}
}
//unselect all vertices
else if (e.type == EventType.mouseUp && e.button == 1 && !e.alt)
{
selected.Clear();
}
}
//draw scene gizmos
DrawSelectedHandles();
DrawPolygonOutline();
//handle undo of vertex modifications (redraw mesh)
if (e.type == EventType.ValidateCommand && e.commandName == "UndoRedoPerformed")
{
undoRedo = true;
}
HandleUtility.AddDefaultControl(-1);
HandleUtility.Repaint();
}
/// <summary>
/// Draw Scene GUI handles, circles and outlines for submesh vertices.
/// <summary>
public void OnSceneGUI()
{
//get world positions of vertices
allPoints = ConvertAllPoints();
//create a ray to get where we clicked in the scene view and pass in mouse position
Ray worldRay = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
RaycastHit hitInfo;
//this prevents selecting other objects in the scene
int controlID = GUIUtility.GetControlID(FocusType.Passive);
HandleUtility.AddDefaultControl(controlID);
//find index of closest vertex, if any
dragIndex = FindClosest();
//in the edit mode, ray hit something
if (placing && Physics.Raycast(worldRay, out hitInfo))
{
//the actual hit position
mousePosition = hitInfo.point;
Event e = Event.current;
//place new point if the left mouse button was clicked
if (e.type == EventType.mouseUp && e.button == 0)
{
Undo.RegisterCompleteObjectUndo(script, "Split Mesh");
//get current submesh vertex count
int currentCount = script.current.Count;
//create a new submesh, if control was hold in addition to the mouse click
//or if autoSplit is true and the current count exceeds splitAt
if ((e.control && currentCount >= 3) ||
(script.autoSplit && currentCount >= script.splitAt))
{
GameObject newObj = script.CreateSubMesh();
Undo.RegisterCreatedObjectUndo(newObj, "Split Mesh");
}
//call this method when you've used an event.
//the event's type will be set to EventType.Used,
//causing other GUI elements to ignore it
Event.current.Use();
//add point to existing vertex, if near any
//otherwise just add a new vertex position
if (dragIndex >= 0)
{
script.AddPoint(dragIndex);
}
else
{
script.AddPoint(mousePosition);
}
//invoke new mesh calculation
Undo.RecordObject(script.subMesh, "Split Mesh");
script.CreateMesh();
return;
}
}
//not in edit mode, clicking near vertices will select them and show handles
if (!placing && Event.current.type == EventType.mouseUp && Event.current.button == 0)
{
//select/unselect vertex point
if (dragIndex >= 0)
{
if (!selected.Contains(dragIndex))
{
selected.Add(dragIndex);
}
else
{
selected.Remove(dragIndex);
}
SceneView.RepaintAll();
}
}
//right-clicking anywhere will unselect all vertices
if (!placing && Event.current.type == EventType.mouseUp && Event.current.button == 1)
{
selected.Clear();
}
//draw scene gizmos
DrawSelectedHandles();
DrawPolygonOutline();
//handle undo of vertex modifications (redraw mesh)
if (Event.current.commandName == "UndoRedoPerformed")
{
if (!script.GetComponent <MeshFilter>().sharedMesh)
{
return;
}
script.UpdateMesh(ConvertAllPoints());
return;
}
}
