--- loncom/homework/functionplotresponse.pm 2010/11/24 02:53:13 1.47 +++ loncom/homework/functionplotresponse.pm 2015/04/05 17:09:57 1.105.2.2 @@ -1,7 +1,7 @@ # LearningOnline Network with CAPA -# option list style responses +# Functionplot responses # -# $Id: functionplotresponse.pm,v 1.47 2010/11/24 02:53:13 www Exp $ +# $Id: functionplotresponse.pm,v 1.105.2.2 2015/04/05 17:09:57 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -31,51 +31,160 @@ use strict; use Apache::response(); use Apache::lonlocal; use Apache::lonnet; +use Apache::run; +use LONCAPA; BEGIN { &Apache::lonxml::register('Apache::functionplotresponse',('functionplotresponse','backgroundplot','spline', + 'plotobject','plotvector', + 'functionplotvectorrule','functionplotvectorsumrule', + 'drawvectorsum', + 'functionplotcustomrule', 'functionplotrule','functionplotruleset', 'functionplotelements')); } # +# Use old Java or HTML5/Javascript for GeoGebra? Depends on browser! +# Return a true value if HTML5 should be used. + +sub useHTML5 { + if ($env{'browser.type'} eq 'chrome') { + if ($env{'browser.version'} >= 14) { + return 1; + } + } elsif ($env{'browser.type'} eq 'safari') { + if ($env{'browser.os'} eq 'mac') { + my ($prefix,$version) = ($env{'browser.version'} =~ /^(\d*)(\d{3})\./); + if ($version >= 536) { + return 1; + } + } + } elsif ($env{'browser.type'} eq 'mozilla') { + if ($env{'browser.info'} =~ /^firefox\-(\d+)/) { + my $firefox = $1; + if ((($env{'browser.os'} eq 'mac') && ($firefox >= 20)) || + (($env{'browser.os'} eq 'unix') && ($firefox >= 17)) || + (($env{'browser.os'} eq 'win') && ($firefox >= 14))) { + return 1; + } + } + } elsif ($env{'browser.type'} eq 'explorer') { + if (($env{'browser.os'} eq 'win') && ($env{'browser.version'} >= 10)) { + return 1; + } + } elsif ($env{'browser.type'} eq 'opera') { + if ($env{'browser.version'} >= 18) { + return 1; + } + } + return 0; +} + +# +# HTML5 version does not understand "_" in IDs +# +sub appid { + my ($id)=@_; + $id=~s/\_/rid/gs; + $id=~s/\W//gs; + return $id; +} + +# +# Routines to start the applet (Java) or the HTML5/JavaScript +# # There can be a number of applets on a page, each called ggbApplet_$id, # where $id is the "_"-concatenated part and responseid # sub geogebra_startcode { + my ($id,$width,$height)=@_; + if (&useHTML5()) { + return &html5_geogebra_startcode(@_); + } else { + return &java_geogebra_startcode(@_). + &java_geogebra_code_param(); + } +} + +sub geogebra_endcode { + if (&useHTML5()) { + return ''; + } else { + return &java_geogebra_endcode(); + } +} + +sub geogebra_default_parameters { my ($id)=@_; + if (&useHTML5()) { + return ''; + } else { + return &java_geogebra_default_parameters($id); + } +} +# === Java code + +sub java_geogebra_startcode { + my ($id,$width,$height)=@_; + my $appid=&appid($id); + $width=int(1.*$width); + $height=int(1.*$height); + unless ($width) { $width=700; } + unless ($height) { $height=400; } return (< + ENDSTARTCODE } -sub geogebra_endcode { +sub java_geogebra_endcode { return &Apache::lonhtmlcommon::java_not_enabled()."\n"; } +sub java_geogebra_code_param { + return ''; +} + +# === HTML5 code + +sub html5_geogebra_startcode { + my ($id,$width,$height)=@_; + my $appid=&appid($id); + $width=int(1.*$width); + $height=int(1.*$height); + unless ($width) { $width=700; } + unless ($height) { $height=400; } + my $code=&geogebra_internal_program(); + return (< +ENDSTARTCODE +} + # # This is the internal GeoGebra bytecode which defines the spline functions # -sub geogebra_spline_program { - return (< -ENDSPLINEPROGRAM +sub geogebra_internal_program { + return +'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'; } # # The standard set of parameters inside # -sub geogebra_default_parameters { +sub java_geogebra_default_parameters { my ($id)=@_; + my $appid=&appid($id); return(< - - + + @@ -90,7 +199,7 @@ sub geogebra_default_parameters { - + ENDDEFAULTPARAMETERS } @@ -105,12 +214,18 @@ sub init_script { if ($#Apache::functionplotresponse::callscripts>=0) { my $script=''; foreach my $id (@Apache::functionplotresponse::callscripts) { - $script.="if (param=='applet_$id') { loaded_$id=true; }\n"; + $script.="if (param=='ggbApplet".&appid($id)."') { loaded_$id=true; }\n"; } $script.="if (".join(' && ',map { "loaded_$_" } (@Apache::functionplotresponse::callscripts)). - ") { setTimeout('ggbInitAll()',20) }"; + ") { setTimeout('ggbInitAll()',200) }"; my $calls=join("\n",map { "ggbInit_$_();" } (@Apache::functionplotresponse::callscripts)); + my $html5init=''; + if (&useHTML5()) { + $html5init= + ''; + } return (< // // 0)) { $return.=(<0)) { $return.=(<8) { $order=8; } + $Apache::functionplotresponse::counter++; + my $label='CSpline'.$Apache::functionplotresponse::counter; + my $output='document.ggbApplet'.$appid.'.evalCommand("'.$label.'=Spline'.$order.'['; + for (my $i=0;$i<=$#points;$i+=4) { + $output.="($points[$i],$points[$i+1]),($points[$i+2],$points[$i+3]),"; + } + $output=~s/\,$//; + $output.=']");'."\n"; + for (my $i=2; $i<2*$order; $i+=2) { + $output.='document.ggbApplet'.$appid.'.setColor("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",0,170,0);'."\n"; + } + for (my $i=1; $i<2*$order; $i+=2) { + $output.='document.ggbApplet'.$appid.'.setVisible("'.$label.'_'.($i>=10?'{':'').$i.($i>=10?'}':'').'",false);'."\n"; } + + return $output; } # @@ -366,7 +583,8 @@ sub plot_script { # sub generate_spline { - my ($id,$label,$xmin,$xmax,$ymin,$ymax)=@_; + my ($id,$label,$xmin,$xmax,$ymin,$ymax,$fixed)=@_; + my $appid=&appid($id); my $result=''; my $order=$Apache::functionplotresponse::splineorder{$label}; my $x=$Apache::functionplotresponse::splineinitx{$label}; @@ -375,17 +593,216 @@ sub generate_spline { my $sy=$Apache::functionplotresponse::splinescaley{$label}; my @coords=(); foreach my $i (1..$order) { - $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y); + $result.=&new_point_coordinate($id,$label.'P'.$i,$x,$y,$fixed); my $xp=$x; $x+=$sx/(2.*($order-1)); push(@coords,$label.'P'.$i); - $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax); + $result.=&new_slope_coordinate($id,$label.'S'.$i,$x,$y+$sy,$label.'P'.$i,$xp,$y,$xmin,$xmax,$ymin,$ymax,$fixed); $x+=$sx/(2.*($order-1)); push(@coords,$label.'S'.$i); } - $result.='document.ggbApplet_'.$id.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; + $result.='document.ggbApplet'.$appid.'.evalCommand("Spline'.$order.'['.join(',',@coords).']");'."\n"; + return $result; +} + +# +# Object +# + +sub start_plotobject { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; + my $x=&Apache::lonxml::get_param('x',$parstack,$safeeval); + my $y=&Apache::lonxml::get_param('y',$parstack,$safeeval); + my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); + $label=~s/\W//gs; + $label=ucfirst($label); + unless ($label) { $label="NewObject"; } + if ($target eq 'web') { + my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); + unless (defined($x)) { $x=$xmin; } + unless (defined($y)) { $y=$ymin; } + $result.=&plotobject_script($internalid,$label,$x,$y); + } elsif ($target eq 'edit') { + $result=&Apache::edit::tag_start($target,$token,'Plot Object'). + &Apache::edit::text_arg('Label on Plot:','label', + $token,'16'). + &Apache::edit::text_arg('x:','x', + $token,'8'). + &Apache::edit::text_arg('y:','y', + $token,'8'). + &Apache::edit::end_row(); + } elsif ($target eq 'modified') { + $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')}); + my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','x','y'); + if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } + } + return $result; +} + +sub end_plotobject { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } return $result; } + +# +# Vector +# + +sub start_plotvector { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; + my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval); + my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval); + my $tipx=&Apache::lonxml::get_param('tipx',$parstack,$safeeval); + my $tipy=&Apache::lonxml::get_param('tipy',$parstack,$safeeval); + + my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); + $label=~s/\W//gs; + $label=ucfirst($label); + unless ($label) { $label="NewVector"; } + if ($Apache::functionplotresponse::vectorlabels{$label}) { + &Apache::lonxml::warning(&mt('Vector labels must be unique: [_1]',$label)); + } + $Apache::functionplotresponse::vectorlabels{$label}=1; + if ($target eq 'web') { + my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); + unless (defined($tailx)) { $tailx=$xmin; } + unless (defined($taily)) { $taily=$ymin; } + unless (defined($tipx)) { $tipx=$xmin; } + unless (defined($tipy)) { $tipy=$ymin; } + my $fixed=0; + if ((&Apache::response::show_answer()) || (&Apache::response::check_status()>=2)) { $fixed=1; } + $result.=&plotvector_script($internalid,$label,$tailx,$taily,$tipx,$tipy,$xmin,$xmax,$fixed); + } elsif ($target eq 'edit') { + $result=&Apache::edit::tag_start($target,$token,'Plot Vector'). + &Apache::edit::text_arg('Label on Plot:','label', + $token,'16'). + &Apache::edit::text_arg('Tail x:','tailx', + $token,'8'). + &Apache::edit::text_arg('Tail y:','taily', + $token,'8'). + &Apache::edit::text_arg('Tip x:','tipx', + $token,'8'). + &Apache::edit::text_arg('Tip y:','tipy', + $token,'8'). + + &Apache::edit::end_row(); + } elsif ($target eq 'modified') { + $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')}); + my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','tipx','tipy'); + if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } + } + return $result; +} + +sub end_plotvector { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; +} + + +# +# Vector sum - have GeoGebra draw a sum of specified vectors to help students draw +# + +sub start_drawvectorsum { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $internalid = $Apache::inputtags::part.'_'.$Apache::inputtags::response[-1]; + my $internalappid=&appid($internalid); + my $tailx=&Apache::lonxml::get_param('tailx',$parstack,$safeeval); + my $taily=&Apache::lonxml::get_param('taily',$parstack,$safeeval); + my $showvalue=&Apache::lonxml::get_param('showvalue',$parstack,$safeeval); + my $vectorlist=&Apache::lonxml::get_param('vectorlist',$parstack,$safeeval); + my $label=&Apache::lonxml::get_param('label',$parstack,$safeeval); + $label=~s/\W//gs; + $label=ucfirst($label); + unless ($label) { $label="NewVector"; } + if ($target eq 'web') { + my ($xmin,$xmax,$ymin,$ymax)=&boundaries($parstack,$safeeval,-3); + unless (defined($tailx)) { $tailx=$xmin; } + unless (defined($taily)) { $taily=$ymin; } + unless (defined($vectorlist)) { $vectorlist=''; } + my @vectors=split(/\,/,$vectorlist); + if ($#vectors>0) { + my @sumx=(); + my @sumy=(); + foreach my $thisvector (@vectors) { + $thisvector=~s/\W//gs; + $thisvector=ucfirst($thisvector); + unless ($thisvector) { next; } + unless ($Apache::functionplotresponse::vectorlabels{$thisvector}) { + &Apache::lonxml::warning(&mt('Vectors must be defined before using them for drawing vector sums: [_1]',$thisvector)); + next; + } + my $vectorx=$thisvector.'X'; + my $vectory=$thisvector.'Y'; + $result.=(<'. + &Apache::edit::text_arg('Vector List:','vectorlist', + $token,'40'). + &Apache::edit::end_row(); + } elsif ($target eq 'modified') { + $env{'form.'.&Apache::edit::html_element_name('label')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('label')}); + my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'label','tailx','taily','showvalue','vectorlist'); + if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } + } + return $result; +} + + +sub end_drawvectorsum { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; +} + + + # # # @@ -419,7 +836,7 @@ sub start_backgroundplot { &Apache::edit::text_arg('Label on Plot:','label', $token,'8'). &Apache::edit::text_arg('Color (hex code):','color', - $token,'8'). + $token,'8', 'colorchooser'). &Apache::edit::select_arg('Fixed location:','fixed', ['yes','no'],$token). &Apache::edit::end_row(); @@ -457,10 +874,6 @@ sub start_functionplotrule { } else { $label='R'.$label; } - if ($Apache::functionplotresponse::splineorder{$label}) { - &Apache::lonxml::error(&mt('Rule indices must be unique.')); - } - if ($target eq 'grade') { # Simply remember - in order - for later @@ -497,10 +910,10 @@ sub start_functionplotrule { &Apache::lonxml::get_param('percenterror',$parstack,$safeeval) ))); } elsif ($target eq 'edit') { - $result=&Apache::edit::tag_start($target,$token,'Function Plot Evaluation Rule'). + $result=&Apache::edit::tag_start($target,$token,'Function Plot Graph Rule'). &Apache::edit::text_arg('Index/Name:','index', $token,'10').' '. - &Apache::edit::select_arg(&mt('Function:'),'derivativeorder', + &Apache::edit::select_arg('Function:','derivativeorder', [['0','Function itself'], ['1','First derivative'], ['2','Second derivative'], @@ -527,11 +940,17 @@ sub start_functionplotrule { ['lt','less than'], ['le','less than or equal']],$token). $result.= &Apache::edit::select_or_text_arg('Value:','value', - [['undef','not defined']],$token,'8'). + [['undef','not defined']],$token,'30'). &Apache::edit::text_arg('Percent error:','percenterror', $token,'8'). &Apache::edit::end_row(); } elsif ($target eq 'modified') { + if (($env{'form.'.&Apache::edit::html_element_name('xinitial')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xinitiallabel')} eq 'start')) { + $env{'form.'.&Apache::edit::html_element_name('xinitiallabel')}=''; + } + if (($env{'form.'.&Apache::edit::html_element_name('xfinal')} ne '') && ($env{'form.'.&Apache::edit::html_element_name('xfinallabel')} eq 'end')) { + $env{'form.'.&Apache::edit::html_element_name('xfinallabel')}=''; + } my $constructtag=&Apache::edit::get_new_args($token,$parstack, $safeeval,'index','derivativeorder', 'xinitial','xinitiallabel','xfinal','xfinallabel', @@ -553,6 +972,225 @@ sub end_functionplotrule { # +# +# +sub start_functionplotvectorrule { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); + $Apache::functionplotresponse::counter++; + if ($label=~/\W/) { + &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); + } + $label=~s/\W//gs; + unless ($label) { + $label='R'.$Apache::functionplotresponse::counter; + } else { + $label='R'.$label; + } + + if ($target eq 'grade') { +# Simply remember - in order - for later + + my $id=$Apache::inputtags::response[-1]; + my $partid=$Apache::inputtags::part; + my $internalid = $partid.'_'.$id; + + my $vector=&Apache::lonxml::get_param('vector',$parstack,$safeeval); + $vector=~s/\W//gs; + $vector=ucfirst($vector); + + push(@Apache::functionplotresponse::functionplotvectorrules,join(':',( + $label, + 'vector', + $internalid, + $vector, + &Apache::lonxml::get_param('attachpoint',$parstack,$safeeval), + &Apache::lonxml::get_param('notattachpoint',$parstack,$safeeval), + &Apache::lonxml::get_param('tailpoint',$parstack,$safeeval), + &Apache::lonxml::get_param('tippoint',$parstack,$safeeval), + &Apache::lonxml::get_param('nottailpoint',$parstack,$safeeval), + &Apache::lonxml::get_param('nottippoint',$parstack,$safeeval), + &Apache::lonxml::get_param('length',$parstack,$safeeval), + &Apache::lonxml::get_param('angle',$parstack,$safeeval), + &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval), + &Apache::lonxml::get_param('angleerror',$parstack,$safeeval), + ))); + } elsif ($target eq 'edit') { + $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Rule'). + &Apache::edit::text_arg('Index/Name:','index', + $token,'10').' '. + &Apache::edit::text_arg('Vector:','vector', + $token,'16').'
'. + &Apache::edit::text_arg('Attached to object:','attachpoint', + $token,'16'). + &Apache::edit::text_arg('Not attached to object:','notattachpoint', + $token,'16').'
'. + &Apache::edit::text_arg('Tail attached to object:','tailpoint', + $token,'16'). + &Apache::edit::text_arg('Tip attached to object:','tippoint', + $token,'16'). + &Apache::edit::text_arg('Tail not attached to object:','nottailpoint', + $token,'16'). + &Apache::edit::text_arg('Tip not attached to object:','nottippoint', + $token,'16').'
'. + &Apache::edit::text_arg('Length:','length', + $token,'30'). + &Apache::edit::text_arg('Absolute error length:','lengtherror', + $token,'8').'
'. + &Apache::edit::text_arg('Angle:','angle', + $token,'30'). + &Apache::edit::text_arg('Absolute error angle:','angleerror', + $token,'8'). + &Apache::edit::end_row(); + } elsif ($target eq 'modified') { + $env{'form.'.&Apache::edit::html_element_name('vector')}=ucfirst($env{'form.'.&Apache::edit::html_element_name('vector')}); + my $constructtag=&Apache::edit::get_new_args($token,$parstack, + $safeeval,'index','vector','attachpoint','notattachpoint', + 'tailpoint','tippoint','nottailpoint','nottipoint', + 'length','angle', + 'lengtherror','angleerror'); + if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } + } + return $result; +} + +sub end_functionplotvectorrule { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; +} + +# +# +# +sub start_functionplotvectorsumrule { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); + $Apache::functionplotresponse::counter++; + if ($label=~/\W/) { + &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); + } + $label=~s/\W//gs; + unless ($label) { + $label='R'.$Apache::functionplotresponse::counter; + } else { + $label='R'.$label; + } + if ($target eq 'grade') { +# Simply remember - in order - for later + my $id=$Apache::inputtags::response[-1]; + my $partid=$Apache::inputtags::part; + my $internalid = $partid.'_'.$id; + my $vectors=&Apache::lonxml::get_param('vectors',$parstack,$safeeval); + push(@Apache::functionplotresponse::functionplotvectorrules,join(':',( + $label, + 'sum', + $internalid, + $vectors, + &Apache::lonxml::get_param('length',$parstack,$safeeval), + &Apache::lonxml::get_param('angle',$parstack,$safeeval), + &Apache::lonxml::get_param('lengtherror',$parstack,$safeeval), + &Apache::lonxml::get_param('angleerror',$parstack,$safeeval), + ))); + } elsif ($target eq 'edit') { + $result=&Apache::edit::tag_start($target,$token,'Function Plot Vector Sum Rule'). + &Apache::edit::text_arg('Index/Name:','index', + $token,'10').' '. + &Apache::edit::text_arg('Comma-separated list of vectors:','vectors', + $token,'30').'
'. + &Apache::edit::text_arg('Sum vector length:','length', + $token,'30'). + &Apache::edit::text_arg('Absolute error length:','lengtherror', + $token,'8').'
'. + &Apache::edit::text_arg('Sum vector angle:','angle', + $token,'30'). + &Apache::edit::text_arg('Absolute error angle:','angleerror', + $token,'8'). + &Apache::edit::end_row(); + } elsif ($target eq 'modified') { + my $constructtag=&Apache::edit::get_new_args($token,$parstack, + $safeeval,'index','vectors', + 'length','angle', + 'lengtherror','angleerror'); + if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } + } + return $result; +} + +sub end_functionplotvectorsumrule { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } + return $result; +} + +# +# +# +sub start_functionplotcustomrule { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); + $Apache::functionplotresponse::counter++; + if ($label=~/\W/) { + &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); + } + $label=~s/\W//gs; + unless ($label) { + $label='R'.$Apache::functionplotresponse::counter; + } else { + $label='R'.$label; + } + &Apache::lonxml::register('Apache::response',('answer')); + if ($target eq 'edit') { + $result=&Apache::edit::tag_start($target,$token,'Function Plot Custom Rule'). + &Apache::edit::text_arg('Index/Name:','index',$token,'10'). + &Apache::edit::end_row(); + } elsif ($target eq 'modified') { + my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'index'); + if ($constructtag) { $result=&Apache::edit::rebuild_tag($token); } + } + return $result; +} + +sub end_functionplotcustomrule { + my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; + my $result=''; + if ($target eq 'edit') { + $result=&Apache::edit::end_table(); + } elsif ($target eq 'grade') { +# Simply remember - in order - for later + my $label=&Apache::lonxml::get_param('index',$parstack,$safeeval); + $Apache::functionplotresponse::counter++; + if ($label=~/\W/) { + &Apache::lonxml::warning(&mt('Rule indices should only contain alphanumeric characters.')); + } + $label=~s/\W//gs; + unless ($label) { + $label='R'.$Apache::functionplotresponse::counter; + } else { + $label='R'.$label; + } + push(@Apache::functionplotresponse::functionplotvectorrules,join(':',( + $label, + 'custom', + &escape($Apache::response::custom_answer[-1]) + ))); + } + &Apache::lonxml::deregister('Apache::response',('answer')); + return $result; +} + + + +# # # # Unfortunately, GeoGebra seems to want all splines after everything else, so we need to store them @@ -709,7 +1347,7 @@ sub array_index { # sub populate_arrays { - my ($id,$xmin,$xmax)=@_; + my ($id,$xmin,$xmax,$ymin,$ymax)=@_; for (my $i=0; $i<=400; $i++) { $Apache::functionplotresponse::actualxval[$i]=undef; $Apache::functionplotresponse::func[$i]=undef; @@ -737,12 +1375,19 @@ sub populate_arrays { my $xi=&array_index($xmin,$xmax,$xreal); if ($xi<$xiold) { return 'no_func'; } if (($xi>$xiold) && ($xi>=0) && ($xi<=400)) { - if (defined($Apache::functionplotresponse::func[$xi])) { return 'no_func'; } $xiold=$xi; $Apache::functionplotresponse::actualxval[$xi]=$xreal; # Function value my $funcval=&cubic_hermite($t,@yparms); + +# Do we already have a value for this point, and is it different from the new one? + if ((defined($Apache::functionplotresponse::func[$xi])) && + (abs($Apache::functionplotresponse::func[$xi]-$funcval)>($ymax-$ymin)/100.)) { + return 'no_func'; + } +# Okay, remember the new point $Apache::functionplotresponse::func[$xi]=$funcval; + if (defined($funcval)) { if ($xi<$Apache::functionplotresponse::functionplotrulelabels{'start'}) { $Apache::functionplotresponse::functionplotrulelabels{'start'}=$xi; @@ -784,8 +1429,11 @@ sub start_functionplotresponse { undef %Apache::functionplotresponse::previous; $Apache::functionplotresponse::inputfields=''; $Apache::functionplotresponse::counter=0; +# Remember vectors + undef %Apache::functionplotresponse::vectorlabels; # Remember rules undef @Apache::functionplotresponse::functionplotrules; + undef @Apache::functionplotresponse::functionplotvectorrules; # Remember failed rules if ($target eq 'grade') { undef @Apache::functionplotresponse::failedrules; @@ -812,13 +1460,18 @@ sub start_functionplotresponse { .''.&mt('Function Plot Question').'' .''.&mt('Delete?').' ' .&Apache::edit::deletelist($target,$token).'   ' - .&Apache::edit::insertlist($target,$token) + .&Apache::edit::insertlist($target,$token).'   ' + .&Apache::loncommon::help_open_topic('Function_Plot_Response_Question','Function Plot Responses') .'' ." " .&Apache::edit::end_row() .&Apache::edit::start_spanning_row() ."\n"; - $result.=&Apache::edit::text_arg('Label x-axis:','xlabel', + $result.=&Apache::edit::text_arg('Width (pixels):','width', + $token,'6').' '. + &Apache::edit::text_arg('Height (pixels):','height', + $token,'6').'
'. + &Apache::edit::text_arg('Label x-axis:','xlabel', $token,'6').' '. &Apache::edit::text_arg('Minimum x-value:','xmin', $token,'4').' '. @@ -836,13 +1489,12 @@ sub start_functionplotresponse { ['yes','no'],$token).'
'. &Apache::edit::select_arg('Grid visible:','gridvisible', ['yes','no'],$token).'
'. - &Apache::edit::text_arg('Background plot(s) for answer (function:xmin:xmax,function:xmin:xmax,...):', - 'answerdisplay',$token,'50'); - + &Apache::edit::text_arg('Background plot(s) for answer (function(x):xmin:xmax,function(x):xmin:xmax,x1:y1:sx1:sy1:x2:y2:sx2:sy2,...):', + 'answerdisplay',$token,'50'). &Apache::edit::end_row().&Apache::edit::start_spanning_row(); } elsif ($target eq 'modified') { my $constructtag=&Apache::edit::get_new_args($token,$parstack, - $safeeval,'xlabel','xmin','xmax','ylabel','ymin','ymax', + $safeeval,'width','height','xlabel','xmin','xmax','ylabel','ymin','ymax', 'xaxisvisible','yaxisvisible','gridvisible','answerdisplay'); if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); } @@ -852,27 +1504,16 @@ sub start_functionplotresponse { ($env{'form.answer_output_mode'} ne 'tex') && ($Apache::lonhomework::viewgrades == 'F')) { my (undef,undef,$udom,$uname)=&Apache::lonnet::whichuser(); - my $windowopen=&Apache::lonhtmlcommon::javascript_docopen(); - my $start_page = &Apache::loncommon::start_page('Rules Log', undef, - {'only_body' => 1, - 'bgcolor' => '#FFFFFF', - 'js_ready' => 1,}); - my $end_page = &Apache::loncommon::end_page({'js_ready' => 1,}); $uname =~s/\W//g; $udom =~s/\W//g; my $function_name = join('_','LONCAPA_scriptvars',$uname,$udom, $env{'form.counter'},$Apache::lonxml::curdepth); - my $rules_var ="".&mt('Rules Log')."
"; - &Apache::lonxml::add_script_result($rules_var); - } - + &Apache::lonxml::add_script_result( + &Apache::loncommon::modal_adhoc_window($function_name,700,500, + '
'.$Apache::functionplotresponse::ruleslog.'
', + &mt('Rules Log'))."
"); + } return $result; } @@ -923,6 +1564,7 @@ sub compare_rel { sub addlog { my ($text)=@_; + $text=~s/\'/\\\'/g; $Apache::functionplotresponse::ruleslog.=$text.'
'; } @@ -930,15 +1572,331 @@ sub actualval { my ($i,$xmin,$xmax)=@_; return $xmin+$i/400.*($xmax-$xmin); } + +sub fpr_val { + my ($arg)=@_; + return &actualval($Apache::functionplotresponse::functionplotrulelabels{$arg}, + $Apache::functionplotresponse::fpr_xmin, + $Apache::functionplotresponse::fpr_xmax); +} + +sub fpr_f { + my ($arg)=@_; + return $Apache::functionplotresponse::func[&array_index($Apache::functionplotresponse::fpr_xmin, + $Apache::functionplotresponse::fpr_xmax, + $arg)]; +} + +sub fpr_dfdx { + my ($arg)=@_; + return $Apache::functionplotresponse::dfuncdx[&array_index($Apache::functionplotresponse::fpr_xmin, + $Apache::functionplotresponse::fpr_xmax, + $arg)]; +} + +sub fpr_d2fdx2 { + my ($arg)=@_; + return $Apache::functionplotresponse::d2funcdx2[&array_index($Apache::functionplotresponse::fpr_xmin, + $Apache::functionplotresponse::fpr_xmax, + $arg)]; +} + +sub fpr_vectorcoords { + my ($arg)=@_; + $arg=~s/\W//gs; + $arg=ucfirst($arg); + my $id=$Apache::inputtags::response[-1]; + my $partid=$Apache::inputtags::part; + my $internalid = $partid.'_'.$id; + return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_x'}, + $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_x'}, + $env{'form.HWVAL_'.$internalid.'_'.$arg.'Start_y'}, + $env{'form.HWVAL_'.$internalid.'_'.$arg.'End_y'}); +} + +sub fpr_objectcoords { + my ($arg)=@_; + $arg=~s/\W//gs; + $arg=ucfirst($arg); + my $id=$Apache::inputtags::response[-1]; + my $partid=$Apache::inputtags::part; + my $internalid = $partid.'_'.$id; + return ($env{'form.HWVAL_'.$internalid.'_'.$arg.'_x'}, + $env{'form.HWVAL_'.$internalid.'_'.$arg.'_y'}); +} + +sub fpr_vectorlength { + my ($arg)=@_; + my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg); + return sqrt(($xe-$xs)*($xe-$xs)+($ye-$ys)*($ye-$ys)); +} + +sub fpr_vectorangle { + my ($arg)=@_; + my ($xs,$xe,$ys,$ye)=&fpr_vectorcoords($arg); + my $angle=57.2957795*atan2(($ye-$ys),($xe-$xs)); + if ($angle<0) { $angle=360+$angle; } + return $angle; +} + +sub vectorcoords { + my ($id,$label)=@_; + return ($env{'form.HWVAL_'.$id.'_'.$label.'Start_x'}, + $env{'form.HWVAL_'.$id.'_'.$label.'End_x'}, + $env{'form.HWVAL_'.$id.'_'.$label.'Start_y'}, + $env{'form.HWVAL_'.$id.'_'.$label.'End_y'}); +} + +sub objectcoords { + my ($id,$label)=@_; + return ($env{'form.HWVAL_'.$id.'_'.$label.'_x'}, + $env{'form.HWVAL_'.$id.'_'.$label.'_y'}); +} + +sub attached { + my ($id,$vector,$objects,$xmin,$xmax,$ymin,$ymax)=@_; + my ($xs,$xe,$ys,$ye)=&vectorcoords($id,$vector); + my $tolx=($xmax-$xmin)/100.; + my $toly=($ymax-$ymin)/100.; + my $tail=0; + my $tip=0; + foreach my $obj (split(/\s*\,\s*/,$objects)) { + $obj=~s/\W//g; + unless ($obj) { next; } + $obj=ucfirst($obj); + my ($xo,$yo)=&objectcoords($id,$obj); + &addlog("Proximity $vector ($xs,$ys)-($xe,$ye) to $obj ($xo,$yo)"); + if ((abs($xs-$xo)<$tolx) && (abs($ys-$yo)<$toly)) { + $tail=1; + &addlog("Attached tail: $obj"); + } + if ((abs($xe-$xo)<$tolx) && (abs($ye-$yo)<$toly)) { + $tip=1; + &addlog("Attached tip: $obj"); + } + } + &addlog("Result tail:$tail tip:$tip"); + return($tail,$tip); +} + + +sub vectorangle { + my ($x,$y)=@_; + my $angle=57.2957795*atan2($y,$x); + if ($angle<0) { $angle=360+$angle; } + return $angle; +} + +sub vectorlength { + my ($x,$y)=@_; + return sqrt($x*$x+$y*$y); +} + +sub relvector { + my ($xs,$xe,$ys,$ye)=@_; + return ($xe-$xs,$ye-$ys); +} + +sub plotvectorlength { + return &vectorlength(&relvector(&vectorcoords(@_))); +} + +sub plotvectorangle { + return &vectorangle(&relvector(&vectorcoords(@_))); +} + + +# +# Evaluate a functionplotvectorrule +# + +sub functionplotvectorrulecheck { + my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; + &addlog("================="); + my ($label,$type)=split(/\:/,$rule); + if ($type eq 'vector') { + return &vectorcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval); + } elsif ($type eq 'sum') { + return &sumcheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval); + } elsif ($type eq 'custom') { + return &customcheck($rule,$safeeval); + } +} + +sub vectorcheck { + my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; + my ($label,$type,$id,$vector, + $attachpoint,$notattachpoint, + $tailpoint,$tippoint,$nottailpoint,$nottippoint, + $length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule); + &addlog("Vector Rule $label for vector ".$vector); + if ($length ne '') { + &addlog("Checking for length $length with error $lengtherror"); + $length=&Apache::run::run($length,$safeeval); + &addlog("Length evaluated to $length"); + my $thislength=&plotvectorlength($id,$vector); + &addlog("Found length $thislength"); + if (abs($thislength-$length)>$lengtherror) { + &setfailed($label); + return 0; + } + } + if ($angle ne '') { + &addlog("Checking for angle $angle with error $angleerror"); + $angle=&Apache::run::run($angle,$safeeval); + &addlog("Angle evaluated to $angle"); + my $thisangle=&plotvectorangle($id,$vector); + &addlog("Found angle $thisangle"); + my $anglediff=abs($thisangle-$angle); + &addlog("Angle difference: $anglediff"); + if ($anglediff>360.-$anglediff) { + $anglediff=360.-$anglediff; + } + &addlog("Smallest angle difference: $anglediff"); + if ($anglediff>$angleerror) { + &setfailed($label); + return 0; + } + } + if ($attachpoint ne '') { + &addlog("Checking attached: ".$attachpoint); + my ($tail,$tip)=&attached($id,$vector,$attachpoint,$xmin,$xmax,$ymin,$ymax); + unless ($tail || $tip) { + &setfailed($label); + return 0; + } + } + if ($notattachpoint ne '') { + &addlog("Checking not attached: ".$notattachpoint); + my ($tail,$tip)=&attached($id,$vector,$notattachpoint,$xmin,$xmax,$ymin,$ymax); + if ($tail || $tip) { + &setfailed($label); + return 0; + } + } + if ($tailpoint ne '') { + &addlog("Checking tail: ".$tailpoint); + my ($tail,$tip)=&attached($id,$vector,$tailpoint,$xmin,$xmax,$ymin,$ymax); + unless ($tail) { + &setfailed($label); + return 0; + } + } + if ($nottailpoint ne '') { + &addlog("Checking not tail: ".$nottailpoint); + my ($tail,$tip)=&attached($id,$vector,$nottailpoint,$xmin,$xmax,$ymin,$ymax); + if ($tail) { + &setfailed($label); + return 0; + } + } + if ($tippoint ne '') { + &addlog("Checking tip: ".$tippoint); + my ($tail,$tip)=&attached($id,$vector,$tippoint,$xmin,$xmax,$ymin,$ymax); + unless ($tip) { + &setfailed($label); + return 0; + } + } + if ($nottippoint ne '') { + &addlog("Checking not tip: ".$nottippoint); + my ($tail,$tip)=&attached($id,$vector,$nottippoint,$xmin,$xmax,$ymin,$ymax); + if ($tip) { + &setfailed($label); + return 0; + } + } + + &addlog("Rule $label passed."); + return 1; +} + +sub sumcheck { + my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; + my ($label,$type,$id,$vectors,$length,$angle,$lengtherror,$angleerror)=split(/\:/,$rule); + &addlog("Vector Sum Rule $label for vectors ".$vectors); + my $sumx=0; + my $sumy=0; + foreach my $sv (split(/\s*\,\s*/,$vectors)) { + my ($rx,$ry)=&relvector(&vectorcoords($id,$sv)); + $sumx+=$rx; + $sumy+=$ry; + } + &addlog("Sum vector ($sumx,$sumy)"); + if ($length ne '') { + &addlog("Checking length $length with error $lengtherror"); + $length=&Apache::run::run($length,$safeeval); + &addlog("Evaluated to $length"); + my $thislength=&vectorlength($sumx,$sumy); + &addlog("Actual length $thislength"); + if (abs($length-$thislength)>$lengtherror) { + &setfailed($label); + return 0; + } + } + if ($angle ne '') { + &addlog("Checking angle $angle with error $angleerror"); + $angle=&Apache::run::run($angle,$safeeval); + &addlog("Evaluated to $angle"); + my $thisangle=&vectorangle($sumx,$sumy); + &addlog("Actual angle $thisangle"); + my $anglediff=abs($thisangle-$angle); + &addlog("Angle difference: $anglediff"); + if ($anglediff>360.-$anglediff) { + $anglediff=360.-$anglediff; + } + &addlog("Smallest angle difference: $anglediff"); + if ($anglediff>$angleerror) { + &setfailed($label); + return 0; + } + } + &addlog("Rule $label passed."); + return 1; +} + +sub customcheck { + my ($rule,$safeeval)=@_; + my ($label,$type,$prg)=split(/\:/,$rule); + &addlog("Custom Rule ".$label); + my $result=&Apache::run::run(&unescape($prg),$safeeval); + &addlog("Algorithm returned $result"); + unless ($result) { + &setfailed($label); + return 0; + } + &addlog("Rule $label passed."); + return 1; +} + +# +# Evaluate a functionplotrule +# sub functionplotrulecheck { - my ($rule,$xmin,$xmax,$ymin,$ymax)=@_; + my ($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)=@_; my ($label,$derivative,$xinitial,$xinitiallabel,$xfinal,$xfinallabel,$minimumlength,$maximumlength,$relationship,$value,$percent) =split(/\:/,$rule); $percent=($percent>0?$percent:5); &addlog("================="); &addlog("Rule $label for ".($derivative<0?'integral':('function itself','first derivative','second derivative')[$derivative])." $relationship $value"); +# +# Evaluate the value +# + if (($value=~/\D/) && ($value ne 'undef')) { + $Apache::functionplotresponse::fpr_xmin=$xmin; + $Apache::functionplotresponse::fpr_xmax=$xmax; + $value=&Apache::run::run($value,$safeeval); + &addlog("Value evaluated to $value"); + } + +# +# Minimum and maximum lengths of the interval +# + if ((defined($minimumlength)) || (defined($maximumlength))) { + &addlog("Minimumlength $minimumlength Maximumlength $maximumlength"); + } my $li=0; my $lh=400; @@ -1010,10 +1968,7 @@ sub functionplotrulecheck { unless (&compare_rel($relationship,$value,$integral,$tol)) { &addlog("Actual integral ".(defined($integral)?$integral:'undef').", expected $value, tolerance $tol"); &addlog("Rule $label failed."); - my $hintlabel=$label; - $hintlabel=~s/^R//; - push(@Apache::functionplotresponse::failedrules,$hintlabel); - &addlog("Set hint condition $hintlabel"); + &setfailed($label); return 0; } } else { @@ -1033,38 +1988,58 @@ sub functionplotrulecheck { &addlog("Actual value ".(defined($val)?$val:'undef').", expected $value, tolerance $tol"); &addlog("Condition not fulfilled at x=".&actualval($i,$xmin,$xmax)." (".$Apache::functionplotresponse::actualxval[$i]."; index $i)"); if (($findupper) && ($i>$li)) { -# check for minimum and maximum lengths - my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); - if ($minimumlength) { - if ($length<$minimumlength) { - &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); - return 0; - } - } - if ($maximumlength) { - if ($length>$maximumlength) { - &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); - return 0; - } - } +# Check lengths + unless (&checklength($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } +# Successfully found a new label, set it $Apache::functionplotresponse::functionplotrulelabels{$xfinallabel}=$i; &addlog("Rule $label passed, setting label $xfinallabel"); return 1; } else { &addlog("Rule $label failed."); - my $hintlabel=$label; - $hintlabel=~s/^R//; - push(@Apache::functionplotresponse::failedrules,$hintlabel); - &addlog("Set hint condition $hintlabel"); + &setfailed($label); return 0; } } } } +# Corner case where this makes sense: using start or stop as defined labels + unless (&checklength($lh,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)) { return 0; } &addlog("Rule $label passed."); return 1; } +# +# check for minimum and maximum lengths +# + +sub checklength { + my ($i,$li,$minimumlength,$maximumlength,$xmin,$xmax,$label)=@_; + unless (($minimumlength) || ($maximumlength)) { return 1; } + my $length=&actualval($i,$xmin,$xmax)-&actualval($li,$xmin,$xmax); + if ($minimumlength) { + if ($length<$minimumlength) { + &addlog("Rule $label failed, actual length $length, minimum length $minimumlength"); + &setfailed($label); + return 0; + } + } + if ($maximumlength) { + if ($length>$maximumlength) { + &addlog("Rule $label failed, actual length $length, maximum length $maximumlength"); + &setfailed($label); + return 0; + } + } + return 1; +} + +sub setfailed { + my ($hintlabel)=@_; + $hintlabel=~s/^R//; + push(@Apache::functionplotresponse::failedrules,$hintlabel); + &addlog("Set hint condition $hintlabel"); +} + sub start_functionplotruleset { my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_; if ($target eq 'edit') { @@ -1072,7 +2047,8 @@ sub start_functionplotruleset { ''.&mt('Function Plot Rule Set').'' .''.&mt('Delete?').' ' .&Apache::edit::deletelist($target,$token).'   '. - &Apache::edit::insertlist($target,$token) + &Apache::edit::insertlist($target,$token).'   ' + .&Apache::loncommon::help_open_topic('Function_Plot_Response_Rule_Set','Function Plot Rules') .'' ." " .&Apache::edit::end_row() @@ -1102,7 +2078,7 @@ sub end_functionplotruleset { $Apache::functionplotresponse::ruleslog=''; $Apache::functionplotresponse::functionplotrulelabels{'start'}=400; $Apache::functionplotresponse::functionplotrulelabels{'end'}=0; - if (&populate_arrays($internalid,$xmin,$xmax) eq 'no_func') { + if (&populate_arrays($internalid,$xmin,$xmax,$ymin,$ymax) eq 'no_func') { $ad='NOT_FUNCTION'; } else { &addlog("Start of function ".&actualval($Apache::functionplotresponse::functionplotrulelabels{'start'},$xmin,$xmax)." (index ". @@ -1112,7 +2088,14 @@ sub end_functionplotruleset { # We have a function that we can actually grade, go through the spline rules. foreach my $rule (@Apache::functionplotresponse::functionplotrules) { - unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax)) { + unless (&functionplotrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) { + $ad='INCORRECT'; + last; + } + } +# And now go through the vector rules + foreach my $rule (@Apache::functionplotresponse::functionplotvectorrules) { + unless (&functionplotvectorrulecheck($rule,$xmin,$xmax,$ymin,$ymax,$safeeval)) { $ad='INCORRECT'; last; } @@ -1183,17 +2166,25 @@ sub end_functionplotelements { my $answerdisplay=&Apache::lonxml::get_param('answerdisplay',$parstack,$safeeval,-2); if ($answerdisplay=~/\S/s) { foreach my $plot (split(/\s*\,\s*/,$answerdisplay)) { - my ($func,$xl,$xh)=split(/\s*\:\s*/,$plot); - if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; } - if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; } - $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6); + my @components=split(/\s*\:\s*/,$plot); + if ($#components<3) { +# Just a simple plot + my ($func,$xl,$xh)=@components; + if ((!defined($xl)) || ($xl eq '')) { $xl=$xmin; } + if ((!defined($xh)) || ($xh eq '')) { $xh=$xmax; } + $result.=&plot_script($internalid,$func,1,'','00aa00',$xl,$xh,6); + } else { +# This is a spline + $result.=&answer_spline_script($internalid,@components); + } } } } - + my $fixed=0; + if (($showanswer) || (&Apache::response::check_status()>=2)) { $fixed=1; } # Now is the time to render all of the stored splines foreach my $label (keys(%Apache::functionplotresponse::splineorder)) { - $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax); + $result.=&generate_spline($internalid,$label,$xmin,$xmax,$ymin,$ymax,$fixed); } # close the init script $result.=&end_init_script(); @@ -1207,9 +2198,9 @@ sub end_functionplotelements { # generate the input fields $result.=$Apache::functionplotresponse::inputfields; # actually start the -tag - $result.=&geogebra_startcode($internalid); -# load the spline bytecode - $result.=&geogebra_spline_program(); + $result.=&geogebra_startcode($internalid, + &Apache::lonxml::get_param('width',$parstack,$safeeval,-2), + &Apache::lonxml::get_param('height',$parstack,$safeeval,-2)); # set default parameters $result.=&geogebra_default_parameters($internalid); # close the -tag @@ -1249,7 +2240,8 @@ sub start_functionplotelements { ''.&mt('Function Plot Elements').'' .''.&mt('Delete?').' ' .&Apache::edit::deletelist($target,$token).'   '. - &Apache::edit::insertlist($target,$token) + &Apache::edit::insertlist($target,$token).'   ' + .&Apache::loncommon::help_open_topic('Function_Plot_Response_Elements','Function Plot Elements') .'' ." " .&Apache::edit::end_row()