#!../blt_wish -f

if [file exists ../library] {
    set blt_library ../library
}

blt_bitmap define pattern1 { {4 4} {01 02 04 08} }
blt_bitmap define pattern5 { {4 4} {01 01 01 01} }
option add *Blt_graph.font *New*Century*Bold*R*14* 
option add *Blt_htext.Font *Times*Bold-R*14*
option add *Blt_graph.textFont *new*century*140*

set visual [winfo screenvisual .]
if { $visual != "staticgray" && $visual != "grayscale" } {
    option add *Button.Background red
    option add *Blt_graph.foreground navyblue
    option add *Blt_graph.borderWidth 2
    option add *Blt_graph.relief sunken 
    option add *Blt_graph.textTagForeground black
    option add *Blt_graph.textTagBackground yellow
    option add *Blt_graph.lineTagForeground black
    option add *Blt_graph.lineTagBackground yellow
    option add *Blt_graph.polyTagForeground lightblue
    option add *Blt_graph.polyTagStipple pattern5
    option add *Blt_graph.polyTagBackground {}
    option add *Blt_graph.elemActiveBackground yellow
    option add *Blt_graph.elemActiveForeground brown 
}

option add *Blt_graph.title 		"Another XY Graph"
option add *Blt_graph.xTitle 		"X Axis Label"
option add *Blt_graph.yTitle 		"Y Axis Label"
option add *Blt_graph.elemScale   	0.85

blt_htext .msg -text {\
In this example, you can sweep out a box to zoom in by clicking with 
the left button and dragging the pointer.  To restore the original view,
simply click on the middle button.  
Hit the %%
button $blt_htext(widget).quit -text {Quit} -command {exit} 
$blt_htext(widget) append $blt_htext(widget).quit
%% button when you've seen enough. %%
label $blt_htext(widget).logo -bitmap BLT 
$blt_htext(widget) append $blt_htext(widget).logo
%%}

blt_graph .graph

.graph xaxis configure -step 90 -command formatXLabels -subticks 0 
.graph yaxis configure -rotate 90.0 

proc formatXLabels {graph x} {
     return "[expr int($x)]\260"
}

.graph element create sin(x) \
    -symbol circle \
    -bg powderblue \
    -fg navyblue \
    -linewidth 2 

.graph element create cos(x) \
    -symbol circle \
    -fg magenta \
    -bg purple \
    -borderwidth 1 \
    -linewidth 2 

pack append .  \
	.graph { fill expand } \
	.msg  { padx 20 pady 10 } 
wm min . 0 0

set x [expr 3.14159265358979323846/180.0]
puts stderr "Generating data..."
for { set i -360 } { $i <= 360 } { incr i 5 } {
    set radians [expr $i*$x]
    .graph element append sin(x) { $i sin($radians) }
    .graph element append cos(x) { $i cos($radians) }
}
puts stderr "done."

set sine [lindex [.graph element configure sin(x) -data] 4]
set fill [concat -360 min $sine 360 min]
.graph tag create polygon $fill

source features.tcl
SetActiveLegend .graph
SetClosestPoint .graph
SetZoom .graph
SetPrint .graph