[clutter] timeline: Ensure the range on the cubic bezier control points

[Emmanuele Bassi <ebassi src gnome org>]

commit 0538adc58cd7cea4751bc46964a53c7950a00250
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Fri Apr 5 15:35:15 2013 +0100

    timeline: Ensure the range on the cubic bezier control points
    
    The X coordinate has to be in the [ 0.0, 1.0 ] range.

 clutter/clutter-timeline.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/clutter/clutter-timeline.c b/clutter/clutter-timeline.c
index 513d82e..440b2d2 100644
--- a/clutter/clutter-timeline.c
+++ b/clutter/clutter-timeline.c
@@ -2496,6 +2496,11 @@ clutter_timeline_set_cubic_bezier_progress (ClutterTimeline    *timeline,
 
   priv->cb_1 = *c_1;
   priv->cb_2 = *c_2;
+
+  /* ensure the range on the X coordinate */
+  priv->cb_1.x = CLAMP (priv->cb_1.x, 0.f, 1.f);
+  priv->cb_2.x = CLAMP (priv->cb_2.x, 0.f, 1.f);
+
   clutter_timeline_set_progress_mode (timeline, CLUTTER_CUBIC_BEZIER);
 }