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#!/usr/bin/tclsh
# cmap tester - make visible the map areas from a .cmapx or .cmap file onto
# a .png or .gif image file
#
# usage example:
#
#
# ./dot -Tpng -o example.png -Tcmapx -o example.cmapx < example.gv
# ./cmap_tester.tcl example | xv -
package require Gdtclft
if {! $argc} {
puts stderr "Usage: $argv0 file"
exit
}
set fn [file rootname [lindex $argv 0]]
if {[file exists $fn.gif]} {
set image_type gif
} elseif {[file exists $fn.png]} {
set image_type png
} elseif {[file exists [lindex $argv 0].png]} {
set fn [lindex $argv 0]
set image_type png
} elseif {[file exists [lindex $argv 0].gif]} {
set fn [lindex $argv 0]
set image_type gif
} else {
puts stderr "image file $fn.gif or $fn.png does not exist."
exit
}
if {[file exists $fn.cmap]} {
set map_type cmap
} elseif {[file exists $fn.cmapx]} {
set map_type cmapx
} else {
puts stderr "map file $fn.cmap or $fn.cmapx does not exist."
exit
}
set f [open $fn.$image_type r]
set gd [gd createFrom[string toupper $image_type] $f]
close $f
set turquoise [gd color resolve $gd 0 255 255]
set f [open $fn.$map_type r]
set map [read $f [file size $fn.$map_type]]
close $f
foreach {. coords} [regexp -all -inline {coords="([-0-9, ]*)"} $map] {
set coords [split $coords ", "]
if {[llength $coords] == 4} {
eval gd rectangle $gd $turquoise $coords
} {
eval gd polygon $gd $turquoise $coords
}
}
gd write[string toupper $image_type] $gd stdout
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