Import SVG instead of DXF

Dockerfile

@@ -15,8 +15,8 @@ RUN apt-get update \
     && apt-get -y install \
         fonts-roboto \
         inkscape \
+        mupdf-tools \
         openscad \
-        pstoedit \
         python3 \
         python3-pip \
     && rm -rf /var/lib/apt/lists

Pipfile

@@ -9,6 +9,7 @@ verify_ssl = true
 pyppeteer = "*"
 quart = "*"
 hypercorn = "*"
+lxml = "*"
 
 [requires]
 python_version = "3.8"

Pipfile.lock

@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "eba051b6315cc8b820efd1c0944fa7890e84072ce4dfdae1392a0e6cacd845d2"
+            "sha256": "42bcdc44919fe8d57ed1adf7edb582d36a65fcec2a9ccaadfdb2e507bd8c0e9b"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -93,6 +93,39 @@
             ],
             "version": "==2.11.2"
         },
+        "lxml": {
+            "hashes": [
+                "sha256:06d4e0bbb1d62e38ae6118406d7cdb4693a3fa34ee3762238bcb96c9e36a93cd",
+                "sha256:0701f7965903a1c3f6f09328c1278ac0eee8f56f244e66af79cb224b7ef3801c",
+                "sha256:1f2c4ec372bf1c4a2c7e4bb20845e8bcf8050365189d86806bad1e3ae473d081",
+                "sha256:4235bc124fdcf611d02047d7034164897ade13046bda967768836629bc62784f",
+                "sha256:5828c7f3e615f3975d48f40d4fe66e8a7b25f16b5e5705ffe1d22e43fb1f6261",
+                "sha256:585c0869f75577ac7a8ff38d08f7aac9033da2c41c11352ebf86a04652758b7a",
+                "sha256:5d467ce9c5d35b3bcc7172c06320dddb275fea6ac2037f72f0a4d7472035cea9",
+                "sha256:63dbc21efd7e822c11d5ddbedbbb08cd11a41e0032e382a0fd59b0b08e405a3a",
+                "sha256:7bc1b221e7867f2e7ff1933165c0cec7153dce93d0cdba6554b42a8beb687bdb",
+                "sha256:8620ce80f50d023d414183bf90cc2576c2837b88e00bea3f33ad2630133bbb60",
+                "sha256:8a0ebda56ebca1a83eb2d1ac266649b80af8dd4b4a3502b2c1e09ac2f88fe128",
+                "sha256:90ed0e36455a81b25b7034038e40880189169c308a3df360861ad74da7b68c1a",
+                "sha256:95e67224815ef86924fbc2b71a9dbd1f7262384bca4bc4793645794ac4200717",
+                "sha256:afdb34b715daf814d1abea0317b6d672476b498472f1e5aacbadc34ebbc26e89",
+                "sha256:b4b2c63cc7963aedd08a5f5a454c9f67251b1ac9e22fd9d72836206c42dc2a72",
+                "sha256:d068f55bda3c2c3fcaec24bd083d9e2eede32c583faf084d6e4b9daaea77dde8",
+                "sha256:d5b3c4b7edd2e770375a01139be11307f04341ec709cf724e0f26ebb1eef12c3",
+                "sha256:deadf4df349d1dcd7b2853a2c8796593cc346600726eff680ed8ed11812382a7",
+                "sha256:df533af6f88080419c5a604d0d63b2c33b1c0c4409aba7d0cb6de305147ea8c8",
+                "sha256:e4aa948eb15018a657702fee0b9db47e908491c64d36b4a90f59a64741516e77",
+                "sha256:e5d842c73e4ef6ed8c1bd77806bf84a7cb535f9c0cf9b2c74d02ebda310070e1",
+                "sha256:ebec08091a22c2be870890913bdadd86fcd8e9f0f22bcb398abd3af914690c15",
+                "sha256:edc15fcfd77395e24543be48871c251f38132bb834d9fdfdad756adb6ea37679",
+                "sha256:f2b74784ed7e0bc2d02bd53e48ad6ba523c9b36c194260b7a5045071abbb1012",
+                "sha256:fa071559f14bd1e92077b1b5f6c22cf09756c6de7139370249eb372854ce51e6",
+                "sha256:fd52e796fee7171c4361d441796b64df1acfceb51f29e545e812f16d023c4bbc",
+                "sha256:fe976a0f1ef09b3638778024ab9fb8cde3118f203364212c198f71341c0715ca"
+            ],
+            "index": "pypi",
+            "version": "==4.5.0"
+        },
         "markupsafe": {
             "hashes": [
                 "sha256:00bc623926325b26bb9605ae9eae8a215691f33cae5df11ca5424f06f2d1f473",

namensschild.scad.j2

@@ -1,28 +1,22 @@
 $fn=64;
 //$fn=32;
 
-length = 50/3;
+depth = 50/3;
 width = 50;
-name_length = 40/3;
 name_width = 40;
 height = 2;
 height_plate = 1;
 
 module name_file() {
-    translate([(width-name_width)/2, (length-name_length)/2, 0]) {
+    translate([width/2, depth/2, 0]) {
-        difference() {
+       import("{{ name }}.svg", center=true);
-            hull() {
-                resize([name_width, name_length, 0]) import("{{ name}}.dxf");
-            }
-            resize([name_width, name_length, 0]) import("{{ name }}.dxf");
-        }
     }
 }
 
 module box(height) {
     hull() {
         for(x=[0, width]) {
-            for(y=[0, length]) {
+            for(y=[0, depth]) {
                 translate([x, y, 0]) linear_extrude(height) circle(r=1);
             }
         }
@@ -33,12 +27,12 @@ difference() {
     union() {
         difference() {
             box(height);
-            translate([1.5, 1.5, height_plate])  resize([width-1, length-1, height-height_plate]) box(height-height_plate);
+            translate([1.5, 1.5, height_plate])  resize([width-1, depth-1, height-height_plate]) box(height-height_plate);
         }
         linear_extrude(height) {
             name_file();
         }
     }
 
-    translate([width-2.5, length-2.5, 0]) linear_extrude(height_plate) circle(r=1.9);
+    translate([width-2.5, depth-2.5, 0]) linear_extrude(height_plate) circle(r=1.9);
 }

server.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 from jinja2 import Template
+from lxml import etree
 from pyppeteer import launch
 from quart import Quart, request, render_template, url_for, redirect
 from subprocess import run
@@ -22,6 +23,34 @@ async def gen_pdf(name):
     await browser.close()
 
 
+def gen_svg(name):
+    # OpenSCAD only supports a small subset of SVG (namely no clips, transforms
+    # and uses). Experiments lead to the result that chaining some conversions
+    # removes all those.
+    run_check(
+        ["inkscape", "-T", "-E", f"static/{name}.eps", f"static/{name}.pdf",]
+    )
+    run_check(
+        ["inkscape", "-T", "-A", f"static/{name}.pdf", f"static/{name}.eps",]
+    )
+    run_check(["mutool", "convert", "-o", f"static/{name}.svg", f"static/{name}.pdf"])
+
+    # for some reason mutool exports to {name}1 instead onf {name}…
+    tree = etree.parse(f"static/{name}1.svg")
+    root = tree.getroot()
+    # background
+    del root[0][0][0]
+    tree.write(f"static/{name}.svg")
+
+
+def gen_stl(name):
+    with open("namensschild.scad.j2", "r") as f:
+        template = Template(f.read())
+    with open(f"static/{name}.scad", "w") as f:
+        f.write(template.render(name=name))
+    run_check(["openscad", "-o", f"static/{name}.stl", f"static/{name}.scad"])
+
+
 @app.route("/")
 async def index():
     return await render_template("index.html.j2")
@@ -31,29 +60,8 @@ async def index():
 async def generate():
     name = request.args["name"]
     await gen_pdf(name)
-    run_check(
+    gen_svg(name)
-        ["inkscape", "-T", "-E", f"static/{name}.eps", f"static/{name}.pdf",]
+    gen_stl(name)
-    )
-    run_check(
-        [
-            "pstoedit",
-            "-q",
-            "-flat",
-            "0.0001",
-            "-dt",
-            "-f",
-            "dxf: -polyaslines -mm",
-            f"static/{name}.eps",
-            f"static/{name}.dxf",
-        ]
-    )
-
-    with open("namensschild.scad.j2", "r") as f:
-        template = Template(f.read())
-    with open(f"static/{name}.scad", "w") as f:
-        f.write(template.render(name=name))
-    run_check(["openscad", "-o", f"static/{name}.stl", f"static/{name}.scad"])
-
     return redirect(url_for("static", filename=f"{name}.stl"), code=302)