[chronojump] Added needed changes to last commit

[Xavier de Blas <xaviblas src gnome org>]

commit 32b12d5af91964ae9183faa429e11298cc4e7c7e
Author: Xavier de Blas <xaviblas gmail com>
Date:   Wed Dec 18 16:42:04 2019 +0100

    Added needed changes to last commit

 src/gui/app1/chronojumpJumpsDjOptimalFall.cs | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/src/gui/app1/chronojumpJumpsDjOptimalFall.cs b/src/gui/app1/chronojumpJumpsDjOptimalFall.cs
index b69d8b6e..3943b28e 100644
--- a/src/gui/app1/chronojumpJumpsDjOptimalFall.cs
+++ b/src/gui/app1/chronojumpJumpsDjOptimalFall.cs
@@ -45,11 +45,15 @@ public partial class ChronoJumpWindow
                if(calculateData)
                        jumpsDjOptimalFall.Calculate(currentPerson.UniqueID, currentSession.UniqueID);
 
-               JumpsDjOptimalFallGraph.Do(
-                               jumpsDjOptimalFall.Point_l,
-                               jumpsDjOptimalFall.GetMaxY(),
-                               drawingarea_jumps_dj_optimal_fall,
-                               currentPerson.Name, currentSession.DateShort);
+               if(jumpsDjOptimalFall.Point_l.Count > 0)
+                       JumpsDjOptimalFallGraph.Do(
+                                       jumpsDjOptimalFall.Point_l,
+                                       jumpsDjOptimalFall.Coefs,
+                                       jumpsDjOptimalFall.XatMaxY, //model
+                                       jumpsDjOptimalFall.GetMaxValue(),
+                                       drawingarea_jumps_dj_optimal_fall,
+                                       currentPerson.Name, currentSession.DateShort);
+               //TODO: if not, just blank screen
        }
        private void on_drawingarea_jumps_dj_optimal_fall_expose_event (object o, ExposeEventArgs args) 
        {