There's not much need as OpenSCAD scripting to do slicing, pretty much
only 'file=""; projection(cut = true) translate([X, Y, -Z]) import(file);'
is needed to allow passing parameters from the command line.
See below for a simple STL to DXF converter using bash + admesh and a
couple of standard command line tools...
As there is currently no persistent cache, that's likely the slowest
slicer around :-).
ciao,
Torsten.
#!/bin/bash
Written by Torsten Paul, Published under CC0
FILE="$1"
LAYERHEIGHT="$2"
O=openscad
if [ ! -f "$FILE" -o -z "$LAYERHEIGHT" ]
then
echo "usage: $0 <stl-file> <layer-height>"
exit 1
fi
set -- $(admesh "$FILE" | grep ^Min | tr -d 'A-Za-z=,\r\n')
MINX=$1
MAXX=$2
MINY=$3
MAXY=$4
MINZ=$5
MAXZ=$6
echo "X: $MINX - $MAXX / Y: $MINY - $MAXY / Z: $MINZ - $MAXZ"
WIDTH=$(echo $MAXX - $MINX | bc)
DEPTH=$(echo $MAXY - $MINY | bc)
HEIGHT=$(echo $MAXZ - $MINZ | bc)
echo "WIDTH: $WIDTH / DEPTH: $DEPTH / HEIGHT: $HEIGHT"
TX=$(echo "( $MINX + $MAXX ) / -2.0" | bc)
TY=$(echo "( $MINY + $MAXY ) / -2.0" | bc)
echo "TX: $TX / TY: $TY"
LAYERS=$(echo "scale=3; a = ( $HEIGHT / $LAYERHEIGHT ) - 1; scale=0; 2*a/2" | bc)
echo "LAYERS: $LAYERS"
echo 'file=""; projection(cut = true) translate([X, Y, -Z]) import(file);' > slice.scad
for layer in $(seq 0 $LAYERS)
do
ZZ=$(echo "$MINZ + $layer * $LAYERHEIGHT + $LAYERHEIGHT / 2" | bc)
echo ; echo "* Generating layer $layer at $ZZ..."
"$O" -o "layer${layer}.dxf" -Dfile=""$FILE"" -DX=$TX -DY=$TY -DZ="$ZZ" slice.scad
done
There's not much need as OpenSCAD scripting to do slicing, pretty much
only 'file=""; projection(cut = true) translate([X, Y, -Z]) import(file);'
is needed to allow passing parameters from the command line.
See below for a simple STL to DXF converter using bash + admesh and a
couple of standard command line tools...
As there is currently no persistent cache, that's likely the slowest
slicer around :-).
ciao,
Torsten.
-------------------------------------------------------------------
#!/bin/bash
# Written by Torsten Paul, Published under CC0
FILE="$1"
LAYERHEIGHT="$2"
O=openscad
if [ ! -f "$FILE" -o -z "$LAYERHEIGHT" ]
then
echo "usage: $0 <stl-file> <layer-height>"
exit 1
fi
set -- $(admesh "$FILE" | grep ^Min | tr -d 'A-Za-z=,\r\n')
MINX=$1
MAXX=$2
MINY=$3
MAXY=$4
MINZ=$5
MAXZ=$6
echo "X: $MINX - $MAXX / Y: $MINY - $MAXY / Z: $MINZ - $MAXZ"
WIDTH=$(echo $MAXX - $MINX | bc)
DEPTH=$(echo $MAXY - $MINY | bc)
HEIGHT=$(echo $MAXZ - $MINZ | bc)
echo "WIDTH: $WIDTH / DEPTH: $DEPTH / HEIGHT: $HEIGHT"
TX=$(echo "( $MINX + $MAXX ) / -2.0" | bc)
TY=$(echo "( $MINY + $MAXY ) / -2.0" | bc)
echo "TX: $TX / TY: $TY"
LAYERS=$(echo "scale=3; a = ( $HEIGHT / $LAYERHEIGHT ) - 1; scale=0; 2*a/2" | bc)
echo "LAYERS: $LAYERS"
echo 'file=""; projection(cut = true) translate([X, Y, -Z]) import(file);' > slice.scad
for layer in $(seq 0 $LAYERS)
do
ZZ=$(echo "$MINZ + $layer * $LAYERHEIGHT + $LAYERHEIGHT / 2" | bc)
echo ; echo "* Generating layer $layer at $ZZ..."
"$O" -o "layer${layer}.dxf" -Dfile="\"$FILE\"" -DX=$TX -DY=$TY -DZ="$ZZ" slice.scad
done
-------------------------------------------------------------------
