Preliminary 3d prontery.

bin/badge.scad

@@ -0,0 +1,8 @@
+resize([50,50,5])
+  mirror()
+    intersection() {
+      scale([1,1,10])
+        surface(file = "badge.dat", convexity = 5);
+      translate([0,0,-300]) scale([1,1,1000])
+        surface(file = "badge-shape.dat", convexity = 5);
+    }

bin/export.sh

@@ -0,0 +1,25 @@
+#!/bin/bash -x
+
+if [ $# -ne 2 ]; then
+  echo "Usage:  ./export.sh \$BADGE \$SIZE"
+  exit 1
+fi
+
+badge=$1
+size=$2
+
+
+# cleanup from our last run
+rm -f badge.png badge-shape.png badge.dat badge-shape.dat
+
+# Kick it off
+inkscape --export-png=badge.png --export-width=$size --export-height=$size  ../svgs/$badge.svg
+inkscape --export-png=badge-shape.png --export-width=$size --export-height=$size  ../svgs/badge-shape.svg
+python png2heightmap.py badge.png > badge.dat
+python png2heightmap.py badge-shape.png > badge-shape.dat
+openscad badge.scad -o ../stls/$badge.stl
+admesh --write-binary-stl=../stls/badge.stl ../stls/badge.stl
+echo "Done with ../stls/$badge.stl"
+
+# and.. cleanup.
+rm -f badge.png badge-shape.png badge.dat badge-shape.dat

bin/png2heightmap.py

@@ -0,0 +1,16 @@
+#!/bin/python
+from __future__ import print_function
+import sys
+import png
+
+image = png.Reader(sys.argv[1])
+
+width, height, pixels, metadata = image.asRGBA()
+
+for row in pixels:
+    for pixel in range(0, width*4, 4):
+        gray = (row[pixel] + row[pixel+1] + row[pixel+2]) / 3
+        norm = (gray-127.5)/255.0
+        print(' ', end='')
+        print(norm, end='')
+    print()