Added tool to generate BOM

gen_parts.scad

@@ -0,0 +1,19 @@
+use <assembly.scad>;
+
+module genpart(id = 0) {
+  if (id <= 0) {
+    echo(str("Children: ", $children));
+  } else {
+    children(id-1);
+  }
+}
+
+genpart(id) {
+  flcorner();
+  frcorner();
+  brcorner();
+  blcorner();
+  ysled_slider(177.8);
+  ysled_slider(177.8);
+  xsled2();
+}

genbom.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+function bom() {
+    openscad --export-format echo -o - assembly.scad |grep 'BOM: print'
+}
+
+function run_scad() {
+    openscad --export-format echo -o - "$@" gen_parts.scad |
+	sed -ne '/^ECHO: /{' -e 's/^ECHO: "\(.*\)"$/\1/' -e p -e '}'
+}
+
+function partcount() {
+    run_scad -D id=0
+}
+
+nparts=$(partcount |sed -e 's/Children: //')
+
+mkdir -p print
+for i in $(seq $nparts); do
+    part_name="$(run_scad -D id=$i |grep 'BOM: print' |sed -e 's/BOM: print \([^(]*\).*/\1/')"
+    printf "%s: <%s>\n" $i "$part_name"
+    fname="print/${i}_${part_name}"
+    openscad -o "${fname}.3mf" \
+	     -D id=$i \
+	     gen_parts.scad
+done
+#run_scad -D id=1