Only STL outputs in units of m

flaskapp/static/my.js

@@ -35,6 +35,7 @@ function init() {
         var mesh = new THREE.Mesh( geometry, material );
         mesh.castShadow = true;
         mesh.receiveShadow = true;
+        mesh.scale.set(1000, 1000, 1000);
 
         geometry.computeFaceNormals();
         geometry.computeVertexNormals();

svggen/api/composables/graph/Graph.py

@@ -20,6 +20,8 @@ def inflate(face, thickness=.1, edges=False):
   return faces
 
 def STLWrite(faces, filename, **kwargs):
+  scale = .001 # roco units : mm ; STL units m
+
   from stlwriter import Binary_STL_Writer
   import triangle
 
@@ -38,12 +40,12 @@ def STLWrite(faces, filename, **kwargs):
     thickness = "thickness" in kwargs and kwargs["thickness"]
     if thickness:
       for t in [np.transpose(np.array([list(B['vertices'][x]) + [0,1] for x in (face[0], face[1], face[2])])) for face in B['triangles']]:
-        facets.extend([np.dot(r, x) for x in inflate(t, thickness=thickness)])
+        facets.extend([np.dot(r, x) * scale for x in inflate(t, thickness=thickness)])
       for t in [np.transpose(np.array([list(A['vertices'][x]) + [0,1] for x in (edge[0], edge[1])])) for edge in A['segments']]:
-        facets.extend([np.dot(r, x) for x in inflate(t, thickness=thickness, edges=True)])
+        facets.extend([np.dot(r, x) * scale for x in inflate(t, thickness=thickness, edges=True)])
     else:
       for t in [np.transpose(np.array([list(B['vertices'][x]) + [0,1] for x in (face[0], face[1], face[2])])) for face in B['triangles']]:
-        facets.append(np.dot(r, t))
+        facets.append(np.dot(r, t) * scale)
 
     triangles.extend(facets)
     with open(filename.replace(".stl", "_%02d.stl" % i), 'wb') as fp: