--- loncom/homework/functionplotresponse.pm	2011/11/18 17:44:07	1.71
+++ loncom/homework/functionplotresponse.pm	2011/11/18 18:02:04	1.72
@@ -1,7 +1,7 @@
 # LearningOnline Network with CAPA
 # Functionplot responses
 #
-# $Id: functionplotresponse.pm,v 1.71 2011/11/18 17:44:07 www Exp $
+# $Id: functionplotresponse.pm,v 1.72 2011/11/18 18:02:04 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -402,7 +402,7 @@ sub plotobject_script {
 #
 
 sub plotvector_script {
-   my ($id,$label,$xs,$ys,$xe,$ye)=@_;
+   my ($id,$label,$xs,$ys,$xe,$ye,$xmin,$xmax)=@_;
    unless ($label) {
       $Apache::functionplotresponse::counter++;
       $label='V'.$Apache::functionplotresponse::counter;
@@ -410,6 +410,7 @@ sub plotvector_script {
    my $startlabel=$label.'Start';
    my $endlabel=$label.'End';
    my $pointlabel=$label.'Point';
+   my $pointx=2.*($xmax-$xmin)+$xmax;
    my $anglelabel=$label.'Angle';
    return(<<ENDVECTOR);
 document.ggbApplet_$id.evalCommand("$startlabel=($xs,$ys)");
@@ -420,11 +421,10 @@ document.ggbApplet_$id.setLabelVisible("
 document.ggbApplet_$id.evalCommand("$label=Vector[$startlabel,$endlabel]");
 document.ggbApplet_$id.setLabelVisible("$label",true);
 document.ggbApplet_$id.setLineThickness("$label",8);
-// Displays the Angle
-//document.ggbApplet1.evalCommand("Gravitypoint=(110,y(Gravitystart))"); //The x-value for this should be 2*(xmax-xmin)+xmax;
-//document.ggbApplet1.evalCommand("GravityAngle=Angle[Gravitypoint,Gravitystart,Gravityend]");
-//document.ggbApplet1.setLabelVisible("GravityAngle",true);
-//document.ggbApplet1.setLabelStyle("GravityAngle",VALUE=2);
+document.ggbApplet_$id.evalCommand("$pointlabel=($pointx,y($startlabel))");
+document.ggbApplet_$id.evalCommand("$anglelabel=Angle[$pointlabel,$startlabel,$endlabel]");
+document.ggbApplet_$id.setLabelVisible("$anglelabel",true);
+document.ggbApplet_$id.setLabelStyle("$anglelabel",VALUE=2);
 // Keeps track of points we care about (This should use the same listener function we use in graph problems)
 //document.ggbApplet1.registerObjectUpdateListener('Gravitystart','updatePointCoordinates');
 //document.ggbApplet1.registerObjectUpdateListener('Gravityend','updatePointCoordinates');
@@ -553,7 +553,7 @@ sub start_plotvector {
       unless (defined($taily)) { $taily=$ymin; }
       unless (defined($tipx)) { $tipx=$xmin; }
       unless (defined($tipy)) { $tipy=$ymin; }
-      $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy);
+      $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax);
    } elsif ($target eq 'edit') {
         $result=&Apache::edit::tag_start($target,$token,'Plot Vector').
              &Apache::edit::text_arg('Label on Plot:','label',