// About the position hanlde see example https://docs.unity3d.com/ScriptReference/Handles.PositionHandle.html
public void OnSceneGUI()
{
int controlId = GUIUtility.GetControlID(GetHashCode(), FocusType.Passive);
Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
RaycastHit hit;
if (Physics.Raycast(ray.origin, ray.direction, out hit, Mathf.Infinity))
{
mousePos = hit.point;
mousePosValid = true;
///
/// process mouse & keyboard events
///
//if (EditorWindow.focusedWindow)
{
switch (Event.current.type)
{
case EventType.KeyDown:
{
// toggle add mode
if (Event.current.shift && Event.current.keyCode == KeyCode.A)
{
// toggle add mode
SplineSettings.AttachMode selectedAttachMode = gizmo.splineSettings.attachMode;
/*
* SplineSettings.AttachMode selectedAttachMode = (SplineSettings.AttachMode)System.Enum.GetValues(typeof(SplineSettings.AttachMode)).GetValue(attachMode.enumValueIndex);
*
* int boundsIndex = ArrayUtility.IndexOf((SplineSettings.AttachMode[])System.Enum.GetValues(typeof(SplineSettings.AttachMode)), SplineSettings.AttachMode.Bounds);
* int betweenIndex = ArrayUtility.IndexOf((SplineSettings.AttachMode[])System.Enum.GetValues(typeof(SplineSettings.AttachMode)), SplineSettings.AttachMode.Between);
*/
if (selectedAttachMode == SplineSettings.AttachMode.Bounds)
{
gizmo.splineSettings.attachMode = SplineSettings.AttachMode.Between;
}
else
{
gizmo.splineSettings.attachMode = SplineSettings.AttachMode.Bounds;
}
// trigger repaint, so that the enumpopup will be updated
editor.Repaint();
}
;
break;
}
}
}
// control key pressed
if (Event.current.shift)
{
mousePos = hit.point;
mousePosValid = true;
// shift + ctrl = delete
bool deleteMode = Event.current.control;
int addControlPointIndex = FindClosestControlPoint(mousePos);
//Handles.DrawSphere(controlId, mousePos, Quaternion.identity, 0.3f);
Color handleColor;
if (deleteMode)
{
handleColor = Color.red; // red = delete
}
// draw attachment line
else
{
handleColor = Color.gray; // gray = add
}
// draw gray circle
float radius = 0.1f;
Handles.color = handleColor;
Handles.DrawWireDisc(mousePos, hit.normal, radius);
// draw line to closest point
if (gizmo.splineSettings.controlPoints.Count > 0)
{
// draw indicator line to closest control point
Vector3 lineStartPosition = gizmo.splineSettings.controlPoints.ElementAt(addControlPointIndex).position;
Vector3 lineEndPosition = mousePos;
Handles.DrawLine(lineStartPosition, lineEndPosition);
// draw additional indicator line to the control point which is next in the list after the closest control point
if (!deleteMode)
{
int neighbourIndex;
if (addControlPointIndex > 0)
{
neighbourIndex = addControlPointIndex - 1;
}
else
{
neighbourIndex = addControlPointIndex + 1;
}
if (gizmo.splineSettings.attachMode == SplineSettings.AttachMode.Between && neighbourIndex >= 0 && neighbourIndex <= gizmo.splineSettings.controlPoints.Count - 1)
{
Vector3 neighbourLineStartPosition = gizmo.splineSettings.controlPoints.ElementAt(neighbourIndex).position;
Vector3 neighbourLineEndPosition = mousePos;
Handles.DrawLine(neighbourLineStartPosition, neighbourLineEndPosition);
}
}
}
if (Event.current.type == EventType.MouseDown)
{
// delete node
if (deleteMode)
{
bool canDelete = gizmo.splineSettings.controlPoints.Count > 0;
if (Event.current.button == 0 && canDelete)
{
Vector3 mousePosition = new Vector3(mousePos.x, mousePos.y, mousePos.z);
int controlPointIndex = FindClosestControlPoint(mousePosition);
// remove the closest point
if (controlPointIndex != -1)
{
RemoveControlPoint(controlPointIndex);
}
Event.current.Use();
}
}
// add new node
else
{
// left button = 0; right = 1; middle = 2
if (Event.current.button == 0)
{
Vector3 position = new Vector3(mousePos.x, mousePos.y, mousePos.z);
AddControlPoint(position, addControlPointIndex);
Event.current.Use();
}
}
}
}
}
else
{
mousePosValid = false;
}
if (Event.current.type == EventType.Layout)
{
HandleUtility.AddDefaultControl(controlId);
}
DrawSplineGizmos();
// create gameobjects
if (mousePosValid)
{
PerformEditorAction();
}
// show info
Handles.BeginGUI();
string[] info = new string[] { "Add Control Point: shift + click", "Remove control point: shift + ctrl + click", "Change Attach Mode: shift + A, Current: " + gizmo.splineSettings.attachMode };
PrefabPainterEditor.ShowGuiInfo(info);
Handles.EndGUI();
}