private void InsertNewPointAt(int index)
{
Vector3 position;
if (spline.Count >= 2)
{
if (index > 0 && index < spline.Count)
{
position = (spline[index - 1].localPosition + spline[index].localPosition) * 0.5f;
}
else if (index == 0)
{
if (spline.loop)
{
position = (spline[0].localPosition + spline[spline.Count - 1].localPosition) * 0.5f;
}
else
{
position = spline[0].localPosition - (spline[1].localPosition - spline[0].localPosition) * 0.5f;
}
}
else
{
if (spline.loop)
{
position = (spline[0].localPosition + spline[spline.Count - 1].localPosition) * 0.5f;
}
else
{
position = spline[index - 1].localPosition + (spline[index - 1].localPosition - spline[index - 2].localPosition) * 0.5f;
}
}
}
else if (spline.Count == 1)
{
position = index == 0 ? spline[0].localPosition - Vector3.forward : spline[0].localPosition + Vector3.forward;
}
else
{
position = Vector3.zero;
}
BezierPoint point = spline.InsertNewPointAt(index);
point.localPosition = position;
Undo.IncrementCurrentGroup();
Undo.RegisterCreatedObjectUndo(point.gameObject, "Insert Point");
Undo.RegisterCompleteObjectUndo(point.transform.parent, "Insert Point");
Selection.activeTransform = point.transform;
SceneView.RepaintAll();
}
static void ImportBezierSpline(MenuCommand command)
{
string loadPath = EditorUtility.OpenFilePanel("Import spline", null, "json");
if (string.IsNullOrEmpty(loadPath))
{
return;
}
SavedSpline savedSpline = JsonUtility.FromJson <SavedSpline>(File.ReadAllText(loadPath));
if (savedSpline == null || savedSpline.points == null || savedSpline.points.Length < 2)
{
Debug.LogError("Invalid saved data!");
return;
}
BezierSpline spline = (BezierSpline)command.context;
spline.loop = savedSpline.loop;
if (spline.Count > savedSpline.points.Length)
{
for (int i = spline.Count - 1; i >= savedSpline.points.Length; i--)
{
spline.RemovePointAt(i);
}
}
else
{
for (int i = spline.Count; i < savedSpline.points.Length; i++)
{
spline.InsertNewPointAt(i);
}
}
for (int i = 0; i < savedSpline.points.Length; i++)
{
BezierPoint point = spline[i];
SavedSpline.SavedPoint savedPoint = savedSpline.points[i];
point.localPosition = savedPoint.position;
point.localRotation = savedPoint.rotation;
point.localScale = savedPoint.scale;
point.handleMode = savedPoint.handleMode;
point.precedingControlPointLocalPosition = savedPoint.precedingPosition;
point.followingControlPointLocalPosition = savedPoint.followingPosition;
}
}