--- loncom/homework/functionplotresponse.pm 2010/10/04 14:34:43 1.2 +++ loncom/homework/functionplotresponse.pm 2010/10/09 17:43:25 1.10 @@ -1,7 +1,7 @@ # LearningOnline Network with CAPA # option list style responses # -# $Id: functionplotresponse.pm,v 1.2 2010/10/04 14:34:43 www Exp $ +# $Id: functionplotresponse.pm,v 1.10 2010/10/09 17:43:25 www Exp $ # # Copyright Michigan State University Board of Trustees # @@ -33,12 +33,18 @@ use Apache::lonlocal; use Apache::lonnet; BEGIN { - &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse')); + &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline')); } +# +# There can be a number of applets on a page, each called ggbApplet_$id, +# where $id is the "_"-concatenated part and responseid +# + sub geogebra_startcode { + my ($id)=@_; return (< ENDSTARTCODE @@ -48,13 +54,20 @@ sub geogebra_endcode { return &Apache::lonhtmlcommon::java_not_enabled()."\n"; } +# +# This is the internal GeoGebra bytecode which defines the spline functions +# sub geogebra_spline_program { return (< ENDSPLINEPROGRAM } +# +# The standard set of parameters inside +# sub geogebra_default_parameters { + my ($id)=@_; return(< @@ -76,18 +89,317 @@ sub geogebra_default_parameters { - + ENDDEFAULTPARAMETERS } +# +# This subroutine is called by LON-CAPA at +# Each applet on the page will call function ggbOnInit when it is done loading +# This function in turn will call the respective function registered by start_init_script +# Which one of the registered functions is called is determined by ggbOnInitParam, which GeoGebra passes to ggbOnInit +# + +sub init_script { + if ($Apache::functionplotresponse::callscripts) { + return (< +// + +ENDGGBINIT + } +} + +# +# Each Geogebra applet is supposed to call this when parameters change +# Changes the hidden fields on the web page +# +sub update_script { + my ($id)=@_; + return (< +// + +ENDUPDATESCRIPT +} + +# +# Register the above update-handler for a variable +# + +sub update_register { + my ($id,$variable)=@_; + return "document.ggbApplet_$id.registerObjectUpdateListener('$variable','updatePointCoordinates_$id');\n"; +} + +# +# Set a coordinate variable +# +sub set_coordinate { + my ($id,$variable,$x,$y)=@_; + return (<\n". + "\n"; +} + +# +# Initialize a new coordinate variable at set a listener on it +# +sub new_coordinate { + my ($id,$variable,$x,$y)=@_; + if ($Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}) { + $x=$Apache::functionplotresponse::previous{&field_name($id,$variable,'x')}; + } + if ($Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}) { + $y=$Apache::functionplotresponse::previous{&field_name($id,$variable,'y')}; + } + &generate_input_field($id,$variable,$x,$y); + return &set_coordinate($id,$variable,$x,$y).&update_register($id,$variable); +} + +# +# This registers the init-function call for ggbOnInit, which LON-CAPA will place at +# It then starts the right headers +# +sub start_init_script { + my ($id)=@_; +# Add a line to ggbOnInit-function which calls the right function based on parameter passed from GeoGebra + $Apache::functionplotresponse::callscripts.="if (param=='applet_$id') { ggbInit_$id(); }\n"; +# ... and open this function + return (< +// +# +sub start_backgroundplot { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; + my $function=&Apache::lonxml::get_param('function',$parstack,$safeeval); + my $fixed=(&Apache::lonxml::get_param('fixed',$parstack,$safeeval)=~/on|true|yes|1/i?1:0); + + unless ($function) { $function="0"; } + if ($target eq 'web') { + $result.=&plot_script($internalid,$function,$fixed); + } + return $result; +} + +sub end_backgroundplot { + return ''; +} + +# +# +# +# Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them +# +sub start_spline { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); + $Apache::functionplotresponse::counter++; + $label=~s/\W//gs; + unless ($label) { $label='S'.$Apache::functionplotresponse::counter; } + + my $order=&Apache::lonxml::get_param('order',$parstack,$safeeval); + if ($order<2) { $order=2; } + if ($order>8) { $order=8; } + $Apache::functionplotresponse::splineorder{$label}=$order; + + my $x=&Apache::lonxml::get_param('initx',$parstack,$safeeval); + unless ($x) { $x=0; } + $Apache::functionplotresponse::splineinitx{$label}=$x; + + my $y=&Apache::lonxml::get_param('inity',$parstack,$safeeval); + unless ($y) { $y=0; } + $Apache::functionplotresponse::splineinity{$label}=$y; + + my $sx=&Apache::lonxml::get_param('scalex',$parstack,$safeeval); + unless ($sx) { $sx=$order; } + $Apache::functionplotresponse::splinescalex{$label}=$sx; + + my $sy=&Apache::lonxml::get_param('scaley',$parstack,$safeeval); + unless ($sy) { $sy=2; } + $Apache::functionplotresponse::splinescaley{$label}=$sy; + return ''; +} + +sub end_spline { + return ''; +} + +sub end_init_script { + return (< + +ENDENDINIT +} + +# +# Storing and restoring spline coordinates from part answers +# +sub decode_previous_answer { + my ($answer)=@_; + foreach my $coordinate (split(/\,/,$answer)) { + my ($key,$value)=split(/\=/,$coordinate); + $Apache::functionplotresponse::previous{$key}=$value; + } +} + +sub get_answer_from_form_fields { + my ($id)=@_; + my $answer=''; + my %coords=(); + foreach my $field (keys(%env)) { + if ($field=~/^form\.HWVAL\_$id/) { + $field=~/^form\.(.*)$/; + $coords{$1}=$env{$field}; + } + } + $answer=join(',',map { $_.'='.$coords{$_} } (sort(keys(%coords)))); + return ($answer,%coords); +} + sub start_functionplotresponse { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; my $result=''; - my $id = &Apache::response::start_response($parstack,$safeeval); - if ($target eq 'web') { - $result.=&geogebra_startcode(); - $result.=&geogebra_spline_program(); - $result.=&geogebra_default_parameters(); +# To remember the splines - somehow, they need to come last + undef %Apache::functionplotresponse::splineorder; + undef %Apache::functionplotresponse::splineinitx; + undef %Apache::functionplotresponse::splineinity; + undef %Apache::functionplotresponse::splinescalex; + undef %Apache::functionplotresponse::splinescaley; +# Remember input fields, etc + undef %Apache::functionplotresponse::previous; + $Apache::functionplotresponse::inputfields=''; + $Apache::functionplotresponse::counter=0; +# Part and ID + my $partid=$Apache::inputtags::part; + my $id=&Apache::response::start_response($parstack,$safeeval); +# Internal ID to mark the applet and its coordinates + my $internalid = $partid.'_'.$id; +# Previous answer + &decode_previous_answer($Apache::lonhomework::history{"resource.$partid.$id.submission"}); + +# Parameters of + my $xmin=&Apache::lonxml::get_param('xmin',$parstack,$safeeval); + $xmin=($xmin?$xmin:-10); + my $xmax=&Apache::lonxml::get_param('xmax',$parstack,$safeeval); + $xmax=($xmax?$xmax:10); + my $ymin=&Apache::lonxml::get_param('ymin',$parstack,$safeeval); + $ymin=($ymin?$ymin:-10); + my $ymax=&Apache::lonxml::get_param('ymax',$parstack,$safeeval); + $ymax=($ymax?$ymax:10); + my $xaxisvisible=(&Apache::lonxml::get_param('xaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); + my $yaxisvisible=(&Apache::lonxml::get_param('yaxisvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); + my $gridvisible=(&Apache::lonxml::get_param('gridvisible',$parstack,$safeeval)=~/on|true|yes|1/i?'true':'false'); + + if ($target eq 'meta') { + $result=&Apache::response::meta_package_write('functionplotresponse'); + } elsif ($target eq 'web') { +# paste in the update routine to receive stuff back from the applet + $result.=&update_script($internalid); +# start the initscript for this applet + $result.=&start_init_script($internalid); +# put the axis commands inside + $result.=&axes_script($internalid,$xmin,$xmax,$ymin,$ymax,$xaxisvisible,$yaxisvisible,$gridvisible); +# init script is left open } return $result; } @@ -95,9 +407,42 @@ sub start_functionplotresponse { sub end_functionplotresponse { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; &Apache::response::end_response; + my $result; + my $id=$Apache::inputtags::response[-1]; + my $partid=$Apache::inputtags::part; + my $internalid = $partid.'_'.$id; + # if ($target eq 'edit') { $result=&Apache::edit::end_table(); } - if ($target eq 'web') { + if ($target eq 'grade' + && &Apache::response::submitted() + && $Apache::lonhomework::type eq 'exam') { + + #&Apache::response::scored_response($partid,$id); + + } elsif ($target eq 'grade' + && &Apache::response::submitted() + && $Apache::lonhomework::type ne 'exam') { + my ($response,%coords)=&get_answer_from_form_fields($internalid); + $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response; + $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='INCORRECT'; + + } elsif ($target eq 'web') { +# Now is the time to render all of the stored splines + foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { + $result.=&generate_spline($internalid,$label); + } +# close the init script + $result.=&end_init_script(); +# generate the input fields + $result.=$Apache::functionplotresponse::inputfields; +# actually start the -tag + $result.=&geogebra_startcode($internalid); +# load the spline bytecode + $result.=&geogebra_spline_program(); +# set default parameters + $result.=&geogebra_default_parameters($internalid); +# close the -tag $result.=&geogebra_endcode(); } return $result;