More general file creation

build.sh

@@ -17,20 +17,19 @@ run () {
 # It does this by kludging together a PrusaSlicer-specific Metadata file.
 render () {
     basename=$1; shift
-    run openscad -o $basename "$@" temp-tower.scad 2>&1 | tee $basename.log
+    logfile=$basename.log
+    run openscad -o $basename "$@" temp-tower.scad 2>&1 | tee $logfile
 
+    rm -rf Metadata
     mkdir -p Metadata
-    custom=Metadata/Prusa_Slicer_custom_gcode_per_print_z.xml
-    (
-        echo '<?xml version="1.0" encoding="utf-8"?>'
-        echo '<custom_gcodes_per_print_z>'
-        sed -n 's/ECHO: "CUSTOM##\(.*\)"/\1/p' $basename.log
-        echo '<mode value="SingleExtruder"/>'
-        echo '</custom_gcodes_per_print_z>'
-    ) > $custom
+    cat $logfile | while IFS=# read _ _ custom type path text _; do
+        [ "$custom#$type" = "CUSTOM#3mf" ] || continue
+        echo $text >> $path
+    done
+
     run zip $basename $custom
     
-    rm $custom $basename.log
+    rm $custom $logfile
     rmdir Metadata
 }
 

temp-tower.scad

@@ -84,17 +84,28 @@ module EngraveText(text) {
         text(text, size=3.2, valign="center", font=Font);
 }
 
-module Custom(text) {
-    echo(str("CUSTOM##", text));
+// Ouptut special code to add to 3mf file
+module ZCodeWrite(text) {
+    echo(str(
+        "#",
+        "#CUSTOM",
+        "#3mf",
+        "#Metadata/Prusa_Slicer_custom_gcode_per_print_z.xml",
+        "#", text,
+        "##"
+    ));
 }
 
+module main() {
+    ZCodeWrite("<?xml version=\"1.0\" encoding=\"utf-8\"?>");
+    ZCodeWrite("<custom_gcodes_per_print_z>");
     difference() {
         union() {
             cube([25, 5, PlateHeight]); // Floor plate
             for (tier = [0 : 1 : Tiers-1]) {
                 z = PlateHeight + (5 * tier);
                 temp = TempBase + (TempIncrease * tier);
-            Custom(str(
+                ZCodeWrite(str(
                     "<code print_z=\"", z, "\"",
                         " type=\"4\"",
                         " extruder=\"1\"", 
@@ -116,3 +127,9 @@ difference() {
                     EngraveText(SideText);
         }
     }
+    ZCodeWrite("<mode value=\"SingleExtruder\"/>");
+    ZCodeWrite("</custom_gcodes_per_print_z>");
+}
+
+main();
+