[GRASS5] Script for exporting 3D vectors
Crudeli
crudeli at mail.nauta.it
Mon Mar 25 15:18:00 EST 2002
Dear Grass Developers,
since I needed to export a 3D dxf from the contour lines generated by
r.contours and it seems that the dxf format created by v.out.dxf
isn't readable as 3Dpoly by many CAD (I tried Autocad, Intellicad and
VectorWorks), I wrote this shell script to generate a compatible 3D
dxf file.
its use is pretty straightforward:
v.out.isodxf VectFileName
You can read through it to hava an idea of how it works. I tried to
comment it extensively.
This version isn't still as clean as it could be.
Of course the name "v.out.isodxf" is what I use on my box, and it
isn't intended as a mainstream command name. Feel free to modify the
code and to email your suggestions to me.
By the way, thanks to all serious coders for their efforts.
Raffaele Douglas candidi Tommasi Crudeli
_______________________________________________________________
#/!bin/bash
# v.out.isodxf v 0.4
# 18/03/2002
# This script writes a 3D DXF file of the contours
# obtained from r.contours to the $OUTDIR directory
# (in this version = current directory).
# wrote this because v.out.dxf seems to write only 2D polylines
# with a text object, placed somewhere on the same poly,
# to denote the z-value.
#
# This script assumes you obtained the vector file of the
# contours by r.contours and that you used v.support and v.out.ascii
# on the vector file.
# Furthermore the idea came observing that grass writes the ascii
# contour starting from the lowest one and going up in a strictly
growing manner
# _and_
# that every lines in $LOCATION/dig_att/filename
# has its correspondent in
# $LOCATION/dig_ascii/filename
# i.e. in the same order
#
# As far as I can tell, this assumption is true
# but could be verifyed by
# seeing if the xy of the dig_att file
# falls between two following points of the corresponding
# dig_ascii file.
# Of course if you can dig in the v.out.dxf source code
# it would be a better confirmation.
#
# You can freely modify this code.
#
# RafDouglas Candidi Tommasi Crudeli
# ct at ehleng.com
# 18/03/2002
#
#
# The script itself works, but isn't clean:
# one still has to change the script to have it work
# with his files. (fixed)
# Next version will be usable simply from the grass shell (fixed)
# And won't need temp files
# All the resulting polies in the DXF file
# will be placed on a layer named "10"
# Initial control to verify if the user provided the name of the file
to be converted
if [ -z "$1" ]; then
echo
echo "Usage: $0 BinaryVectorFile"
echo
exit
fi
# LAYERNAME="10"
f=$1
VECTDIR=$LOCATION"/dig/"
ASCIIDIR=$LOCATION"/dig_ascii/"
ATTDIR=$LOCATION"/dig_att/"
# OUTDIR=$LOCATION"/outputs/isotxt/"
OUTDIR="./"
SUFFIX=".iso.a"
if [ ! -f $VECTDIR$1 ]; then
echo
echo "Specified Vector File doesn't exist."
echo "Please use g.list vect"
echo
exit
fi
# This is for loopings only
# for f in $LOCATION/dig_ascii/*$FILENAME; do
# h=$(echo $f|cut -d'/' -f 8)
# g=$(echo $h|sed 's/\.iso\.a//g')
# name of the ascii file
k=$f".a"
# deletes the first 14 lines (header) from the dig_ascii file
# squeezes multiple spaces,
# converts the survived spaces to the letter R (just a placeholder),
# converts the linefeeds to the letter Y (just another placeholder),
# converts the leading L of every poly in the file to a linefeed
# cleans away the first line, which is blank
# numbers the lines with grep and
# converts the colons to spaces.
# All this is stored in the file named "temp"
echo
echo "Asciifying $k..."
v.out.ascii input=$f output=$k
cat $ASCIIDIR$k|tail +15|tr -s " "|tr " " "R"|tr "\n" "Y"|tr "L"
"\n"|tail +2|grep -n ""|tr ":" " ">temp
# At this point we have a file (temp) with a _single_, possibly very
long, line for every
# contour poly.
# Now we number also the lines in the dig_att file:
grep -n "" $ATTDIR$k|tr ":" " ">temp2
# and we join the two files
# into the file "joined"
# in which we can find the z-value of the poly and the (x,y) of all
its vertexes
echo "Joining $k..."
join -o 1.5 2.1 2.2 temp2 temp>joined
#
# we develope the lines into something usable:
# Y's become linefeed again
# and the leading R's, which previously indicated the beginning of a
vertex line
# are converted to "A A " (later why)
# All the remaining R's once separeted the x from the y
# so we convert them to spaces.
#
cat joined|tr "Y" "\n"|sed 's/^[R]/A A /g'>temp3
cat temp3|tr "R" " "|sed '/^$/d'>joined
#
# And evetually the tricky part
# We produce another temporary file, containing
# the x,y,z of all the vertexes
# at the beginning of every poly we write
# "stop" and some more numbers,
# just in case you need them for exporting into some other format
#
echo "Awking $k..."
cat joined |awk '{
if ($1 ~ /A/) {
printf("%f %f %s \n",$4,$3,z);
}else{
z=$1
printf("stop %s %s %s\n",$2,$3,$1);
}
}'>tempout
#
# Now we want to write the actual DXF file
# I first write the body (ENTITIES SECTION)
# and then the boring headers...
#
#
# the first lines (i.e. the if($1=="stop") block) are
# written for every new poly and terminate the previous one
# except (i.e. the if (NR>1) block) the all-first line
# which doesn't need to terminate any polygon
# The body is terminated with a
#
#
#
echo "Embodying $k..."
cat tempout |awk '{
if ($1=="stop") {
if (NR>1)
{
printf(" 0\n")
printf("SEQEND\n")
printf(" 8\n")
printf("10\n")
}else {}
printf(" 0\n")
printf("POLYLINE\n")
printf(" 8\n")
printf("10\n")
printf(" 6\n")
printf("CONTINUOUS\n")
# printf(" 62\n")
# printf(" 5\n")
printf(" 66\n")
printf(" 1\n")
printf(" 70\n")
printf(" 8\n")
# printf(" 0\n")
# printf("VERTEX\n")
# printf(" 8\n")
# printf("10\n")
# printf(" 6\n")
# printf("CONTINUOUS\n")
# printf(" 62\n")
# printf(" 5\n")
# printf(" 10\n")
# printf("0.00000\n")
# printf(" 20\n")
# printf("0.00000\n")
# printf(" 30\n")
# printf("207.132456\n")
# printf(" 70\n")
# printf(" 32\n")
}else{printf(" 0\n")
printf("VERTEX\n")
printf(" 8\n")
printf("10\n")
printf(" 6\n")
printf("CONTINUOUS\n")
# printf(" 62\n")
# printf(" 5\n")
printf(" 10\n")
printf("%6.5f\n", $1)
printf(" 20\n")
printf("%6.5f\n", $2)
printf(" 30\n")
printf("%6.5f\n", $3)
printf(" 70\n")
printf(" 32\n")
}
}'>body
#
# We now terminate the body
#
echo " 0
SEQEND
8
10
6
CONTINUOUS
62
5
0
ENDSEC
0
EOF" >>body
#
# and create the header
#
# Header - Part 1
# we grep the max extents of the DTM
# (I assume that the contours don't exceed them)
# The dtm is needed to provide the z-extent,
# which v.info doesn't print out
#r.info map=$g".z"|grep Res|sed 's/ //g'|sed 's/Res:0.5//g'|tr ":"
"\t"|tr -d NEWS"|"|tr -d "\n"|awk '{
#
# I tried also the following, without z EXTMIN/EXTMAX
# which seems to be OK for Acad2000, Intellicad2000 and VectorWorks9
# and doesn't require the original DTM raster
#
v.info input=$f|grep "N:\|E:"|sed 's/ //g'|tr ":" "\t"|tr -d
NEWS"|"|tr -d "\n"|awk '{
printf(" 0\n")
printf("SECTION\n")
printf(" 2\n")
printf("HEADER\n")
printf(" 9\n")
printf("\$ACADVER\n")
printf(" 1\n")
printf("\AC1004\n")
printf(" 9\n")
printf("\$INSBASE\n")
printf(" 10\n")
printf(" 0.0\n")
printf(" 20\n")
printf(" 0.0\n")
printf(" 9\n")
printf("\$EXTMIN\n")
printf(" 10\n")
printf("%6.5f\n", $2)
printf(" 20\n")
printf("%6.5f\n", $4)
printf(" 9\n")
printf("\$EXTMAX\n")
printf(" 10\n")
printf("%6.5f\n", $1)
printf(" 20\n")
printf("%6.5f\n", $3)
}'>header
# Header - Part 2
#
# This is the boring part I promised to you :)
# there are some pseudo-constatns; most part probably unneeded...
#
echo " 9
\$LIMMIN
10
0.0
20
0.0
9
\$LIMMAX
10
0.0
20
0.0
9
\$ORTHOMODE
70
0
9
\$REGENMODE
70
1
9
\$FILLMODE
70
1
9
\$QTEXTMODE
70
0
9
\$DRAGMODE
70
2
9
\$LTSCALE
40
25.3999999999999986
9
\$OSMODE
70
0
9
\$ATTMODE
70
1
9
\$TEXTSIZE
40
0.2
9
\$TRACEWID
40
1.0
9
\$TEXTSTYLE
7
STANDARD
9
\$CLAYER
8
0
9
\$CELTYPE
6
CONTINUOUS
9
\$CECOLOR
62
256
9
\$DIMSCALE
40
1.0
9
\$DIMASZ
40
0.18
9
\$DIMEXO
40
0.0625
9
\$DIMDLI
40
0.38
9
\$DIMRND
40
0.0
9
\$DIMDLE
40
0.0
9
\$DIMEXE
40
0.18
9
\$DIMTP
40
0.0
9
\$DIMTM
40
0.0
9
\$DIMTXT
40
0.18
9
\$DIMCEN
40
0.09
9
\$DIMTSZ
40
0.0
9
\$DIMTOL
70
0
9
\$DIMLIM
70
0
9
\$DIMTIH
70
1
9
\$DIMTOH
70
1
9
\$DIMSE1
70
0
9
\$DIMSE2
70
0
9
\$DIMTAD
70
0
9
\$DIMZIN
70
0
9
\$DIMBLK
1
9
\$DIMASO
70
1
9
\$DIMSHO
70
1
9
\$DIMPOST
1
9
\$DIMAPOST
1
9
\$DIMALT
70
0
9
\$DIMALTD
70
2
9
\$DIMALTF
40
25.3999999999999986
9
\$DIMLFAC
40
1.0
9
\$LUNITS
70
2
9
\$LUPREC
70
4
9
\$AXISMODE
70
0
9
\$AXISUNIT
10
0.0
20
0.0
9
\$SKETCHINC
40
0.1
9
\$FILLETRAD
40
0.0
9
\$AUNITS
70
0
9
\$AUPREC
70
0
9
\$MENU
1
acad
9
\$ELEVATION
40
0.0
9
\$THICKNESS
40
0.0
9
\$VIEWDIR
10
0.0
20
0.0
30
1.0
9
\$LIMCHECK
70
0
9
\$BLIPMODE
70
0
9
\$CHAMFERA
40
0.0
9
\$CHAMFERB
40
0.0
9
\$FASTZOOM
70
0
9
\$SKPOLY
70
0
9
\$TDCREATE
40
2452348.384930556
9
\$TDUPDATE
40
2452348.384930556
9
\$TDINDWG
40
0.0000000000
9
\$TDUSRTIMER
40
0.0000000000
9
\$USRTIMER
70
1
9
\$ANGBASE
50
0.0
9
\$ANGDIR
70
0
9
\$PDMODE
70
1
9
\$PDSIZE
40
-2.0
9
\$PLINEWID
40
0.0
9
\$COORDS
70
0
9
\$SPLFRAME
70
0
9
\$SPLINESEGS
70
8
9
\$ATTDIA
70
0
9
\$ATTREQ
70
1
9
\$USERI1
70
0
9
\$USERI2
70
0
9
\$USERI3
70
0
9
\$USERI4
70
0
9
\$USERI5
70
0
9
\$USERR1
40
0.0
9
\$USERR2
40
0.0
9
\$USERR3
40
0.0
9
\$USERR4
40
0.0
9
\$USERR5
40
0.0
0
ENDSEC
0
SECTION
2
TABLES
0
TABLE
2
LTYPE
70
11
0
LTYPE
2
CONTINUOUS
70
64
3
Solid line
72
65
73
0
40
0.0
0
LTYPE
2
STYLE_01
70
0
3
72
65
73
2
40
0.41664
49
0.20828
49
-0.20836
0
LTYPE
2
STYLE_02
70
0
3
72
65
73
2
40
0.6944250000000001
49
0.48607
49
-0.2083550000000001
0
LTYPE
2
STYLE_03
70
0
3
72
65
73
2
40
1.25
49
1.0416400000000001
49
-0.2083599999999999
0
LTYPE
2
STYLE_04
70
0
3
72
65
73
2
40
1.5277099999999999
49
1.3194249999999998
49
-0.208285
0
LTYPE
2
STYLE_05
70
0
3
72
65
73
2
40
0.20828
49
0.069425
49
-0.138855
0
LTYPE
2
STYLE_06
70
0
3
72
65
73
4
40
1.0416400000000001
49
0.625
49
-0.20828
49
0.06943
49
-0.13893
0
LTYPE
2
STYLE_07
70
0
3
72
65
73
6
40
1.875
49
0.625
49
-0.20828
49
0.6250000000000001
49
-0.2083599999999999
49
0.06943
49
-0.1389299999999999
0
LTYPE
2
STYLE_08
70
0
3
72
65
73
6
40
1.25
49
0.625
49
-0.20828
49
0.06943
49
-0.13893
49
0.0694299999999999
49
-0.13893
0
LTYPE
2
STYLE_09
70
0
3
72
65
73
4
40
5.0
49
3.75
49
-0.2777849999999998
49
0.6944300000000003
49
-0.2777849999999998
0
LTYPE
2
STYLE_10
70
0
3
72
65
73
6
40
5.9375
49
3.75
49
-0.2777849999999998
49
0.6944300000000003
49
-0.2777849999999998
49
0.625
49
-0.3125
0
ENDTAB
0
TABLE
2
LAYER
70
2
0
LAYER
2
0
70
0
62
7
6
CONTINUOUS
0
LAYER
2
10
70
0
62
7
6
CONTINUOUS
0
ENDTAB
0
TABLE
2
STYLE
70
1
0
STYLE
2
STANDARD
70
0
40
0.0
41
1.0
50
0.0
71
0
42
0.0
3
txt
4
0
ENDTAB
0
TABLE
2
VIEW
70
0
0
ENDTAB
0
ENDSEC
0
SECTION
2
BLOCKS
0
ENDSEC
0
SECTION
2
ENTITIES">>header
echo "DXFing $f..."
cat header body > $OUTDIR$f".dxf"
echo "Gzipping $f..."
gzip -9 $OUTDIR$f".dxf"
#
# we remove all the tempfileswe created
#
rm -f joined
rm -f temp
rm -f temp2
rm -f temp3
rm -f tempout
rm -f header
rm -f body
#done
echo "Exporting complete. Goodbye"
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