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# This file provides support for the scripting operations
# implemented in nviz
# A quick routine for specifying the scriptfile to use
proc SetScriptFile {} {
global ScriptFile
set new_file [create_file_browser .script_file_browser 1]
if {$new_file == -1} then {
tkerror "Can't create file"
return
}
Nv_set_script_file $new_file
}
# Allow the user to add a single line to the current script file
proc AddScriptLine {} {
global ScriptPlaying src_boot env
if $ScriptPlaying return
# Create a simple entry popup
set line [exec nviz -f $env(GISBASE)/etc/nviz2.2/scripts/script_get_line -q]
if {"$line" == "-1"} return
Nv_script_add_string "$line"
}
# Allow the user to add a single cmd to the current script file
# The difference between this routine and the previous is that the
# command entered here is sent to the nviz process and executed there
proc AddScriptCmd {} {
global ScriptPlaying src_boot env
if $ScriptPlaying return
# Create a simple entry popup
set line [exec nviz -f $env(GISBASE)/etc/nviz2.2/scripts/script_get_line -q]
if {"$line" == "-1"} return
Nv_script_add_string "catch \{send \$ProcessName \{$line\}\}"
}
# Useful from within a script for sending things without the
# nasty catch-send bit
proc SendScriptLine {line} {
global ProcessName
catch {send $ProcessName "$line"} rval
return $rval
}
# Same as above except waits for command to terminate
proc SendScriptLineWait {line this_proc} {
global ProcessName WaitPoint
set WaitPoint -1
puts "Sending..."
catch {send $ProcessName "block $this_proc \{$line\}"} rval
while {$WaitPoint == -1} {
update
}
puts "Exiting SendScriptLineWait"
return $WaitPoint
}
# Other end of send script which blocks
proc block { proc_name cmd } {
puts "In block with args $proc_name , $cmd"
set rval [eval "$cmd"]
if {"$rval" == ""} then {
set rval 0
}
puts "returning $rval"
send $proc_name "global WaitPoint ; set WaitPoint $rval"
puts "exiting block cmd"
}
# This is a special block which sends back a
# default value in the case that no value is to be
# returned
proc block2 { proc_name cmd default} {
puts "In block2 with args $proc_name, $cmd, $default"
set rval [eval $cmd]
if {"$rval" == ""} then {
set rval "$default"
}
puts "returning $rval"
send $proc_name "global WaitPoint ; set WaitPoint $rval"
puts "exiting block cmd"
}
# Quicky tool to extract map object id
proc ExtractMapID {map_name} {
return [string range $map_name 5 end]
}
# Newer, better version
proc ReturnMapHandle {logical_name} {
return [SendScriptLine "Nliteral_from_logical $logical_name"]
}
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