/// <summary>
/// Gets the index of a ControlPoint.
/// </summary>
/// <param name="cP">ControlPoint to find the index of.</param>
/// <returns>Returns the index of [cP].</returns>
public int GetControlPointIndex(ControlPoint cP)
{
return(controlPoints.IndexOf(cP));
}
private void OnSceneGUI()
{
GetCurveAndTransform();
Handles.BeginGUI();
GUIStyle sceneLabelStyle = new GUIStyle();
sceneLabelStyle.normal.textColor = Color.white;
sceneLabelStyle.alignment = TextAnchor.UpperCenter;
#region Scene View Labels
if (addPointMode)
{
GUI.Label(new Rect(Screen.width * 0.5f - 125, 10, 250, 30), "Left click to add a point", sceneLabelStyle);
}
if (insertPointMode)
{
GUI.Label(new Rect(Screen.width * 0.5f - 125, 10, 250, 30), "Left click to place a point", sceneLabelStyle);
}
if (selectedIndex > -1)
{
GUI.Label(new Rect(Screen.width * 0.5f - 125, 10, 250, 30), "Left click a point to move it", sceneLabelStyle);
}
if (deletePointMode)
{
GUI.Label(new Rect(Screen.width * 0.5f - 125, 10, 250, 30), "Left click a point to delete it", sceneLabelStyle);
}
Handles.EndGUI();
#endregion
#region Intercept Clicks
if ((addPointMode || insertPointMode || deletePointMode) && Event.current.type == EventType.Layout)
{
HandleUtility.AddDefaultControl(0);
}
#endregion
#region Add/Insert Control Points
if ((addPointMode || insertPointMode) && Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
Plane plane = new Plane(-Camera.current.transform.forward, handleTransform.position);
float enter = 0.0f;
if (addPointMode && plane.Raycast(ray, out enter))
{
Vector3 hitPoint = handleTransform.InverseTransformPoint(ray.GetPoint(enter));
Undo.RecordObject(spline, "Add Control Point");
EditorUtility.SetDirty(spline);
lastPoint = new ControlPoint(hitPoint);
if (spline.GetControlPointCount() > 0)
{
Vector3 p = spline.GetControlPoint(0);
Vector3 rayToP = (p - ray.origin);
float angle = Mathf.Deg2Rad * Vector3.Angle(rayToP.normalized, ray.direction);
float dist = Mathf.Sin(angle) * rayToP.magnitude;
if (dist < 0.2f)
{
lastPoint = spline.GetControlPoint(0);
addPointMode = false;
ResetTools();
SceneView.RepaintAll();
}
}
spline.AddControlPoint(lastPoint);
}
else if (insertPointMode)
{
float t;
float dist = -1;
if (spline.GetClosestDistanceToRay(ray, out dist))
{
Undo.RecordObject(spline, "Insert Control Point");
EditorUtility.SetDirty(spline);
Vector3 localPos = handleTransform.InverseTransformPoint(spline.GetPointOnSplineByDistance(dist));
lastPoint = new ControlPoint(localPos);
BezierCurve curve = spline.GetCurveFromDistance(dist, out t);
spline.InsertControlPoint(lastPoint, curve);
}
}
Event.current.Use();
}
if ((addPointMode || insertPointMode) && lastPoint != null && Event.current.type == EventType.MouseDrag && Event.current.button == 0)
{
Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
Plane plane = new Plane(-Camera.current.transform.forward, lastPoint);
float enter = 0.0f;
if (plane.Raycast(ray, out enter))
{
Vector3 hitPoint = handleTransform.InverseTransformPoint(ray.GetPoint(enter));
lastPoint.tangentForward = new CurveHandle(hitPoint - lastPoint);
lastPoint.tangentBackward = new CurveHandle(lastPoint - hitPoint);
}
Event.current.Use();
}
if ((addPointMode || insertPointMode) && Event.current.type == EventType.MouseUp && Event.current.button == 0)
{
Undo.RecordObject(spline, "Move Tangent");
EditorUtility.SetDirty(spline);
lastPoint = null;
Event.current.Use();
}
#endregion
spline.RenderCurvesInSceneView(!deletePointMode);
RenderHandles();
}
