convert DMP2 .dif files

docs/index.txt

@@ -2,7 +2,7 @@
 2:I[9766,[],""]
 3:I[8924,[],""]
 4:I[1959,[],"ClientPageRoot"]
-5:I[1222,["367","static/chunks/b536a0f1-05ee2c75df4a3b9d.js","831","static/chunks/bd904a5c-3aea2adebde6f067.js","664","static/chunks/a3cd4a83-5c5b758da206345b.js","794","static/chunks/f6211eb1-4f3105d2434536dc.js","413","static/chunks/1329d575-16915d95397758f8.js","749","static/chunks/749-d375ce6a5d05b15b.js","974","static/chunks/app/page-1d80ebcf53b20763.js"],"default"]
+5:I[1222,["367","static/chunks/b536a0f1-05ee2c75df4a3b9d.js","831","static/chunks/bd904a5c-3aea2adebde6f067.js","664","static/chunks/a3cd4a83-5c5b758da206345b.js","794","static/chunks/f6211eb1-4f3105d2434536dc.js","413","static/chunks/1329d575-16915d95397758f8.js","749","static/chunks/749-d375ce6a5d05b15b.js","974","static/chunks/app/page-e38888a0d331be3d.js"],"default"]
 8:I[4431,[],"OutletBoundary"]
 a:I[5278,[],"AsyncMetadataOutlet"]
 c:I[4431,[],"ViewportBoundary"]
@@ -10,7 +10,7 @@ e:I[4431,[],"MetadataBoundary"]
 f:"$Sreact.suspense"
 11:I[7150,[],""]
 :HL["/t2-mapper/_next/static/css/71910d47103c2b82.css","style"]
-0:{"P":null,"b":"MfKrWH0yW4dA6XW3Li2xh","p":"/t2-mapper","c":["",""],"i":false,"f":[[["",{"children":["__PAGE__",{}]},"$undefined","$undefined",true],["",["$","$1","c",{"children":[[["$","link","0",{"rel":"stylesheet","href":"/t2-mapper/_next/static/css/71910d47103c2b82.css","precedence":"next","crossOrigin":"$undefined","nonce":"$undefined"}]],["$","html",null,{"lang":"en","children":["$","body",null,{"children":["$","$L2",null,{"parallelRouterKey":"children","error":"$undefined","errorStyles":"$undefined","errorScripts":"$undefined","template":["$","$L3",null,{}],"templateStyles":"$undefined","templateScripts":"$undefined","notFound":[[["$","title",null,{"children":"404: This page could not be found."}],["$","div",null,{"style":{"fontFamily":"system-ui,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif,\"Apple Color Emoji\",\"Segoe UI Emoji\"","height":"100vh","textAlign":"center","display":"flex","flexDirection":"column","alignItems":"center","justifyContent":"center"},"children":["$","div",null,{"children":[["$","style",null,{"dangerouslySetInnerHTML":{"__html":"body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}"}}],["$","h1",null,{"className":"next-error-h1","style":{"display":"inline-block","margin":"0 20px 0 0","padding":"0 23px 0 0","fontSize":24,"fontWeight":500,"verticalAlign":"top","lineHeight":"49px"},"children":404}],["$","div",null,{"style":{"display":"inline-block"},"children":["$","h2",null,{"style":{"fontSize":14,"fontWeight":400,"lineHeight":"49px","margin":0},"children":"This page could not be found."}]}]]}]}]],[]],"forbidden":"$undefined","unauthorized":"$undefined"}]}]}]]}],{"children":["__PAGE__",["$","$1","c",{"children":[["$","$L4",null,{"Component":"$5","searchParams":{},"params":{},"promises":["$@6","$@7"]}],null,["$","$L8",null,{"children":["$L9",["$","$La",null,{"promise":"$@b"}]]}]]}],{},null,false]},null,false],["$","$1","h",{"children":[null,[["$","$Lc",null,{"children":"$Ld"}],null],["$","$Le",null,{"children":["$","div",null,{"hidden":true,"children":["$","$f",null,{"fallback":null,"children":"$L10"}]}]}]]}],false]],"m":"$undefined","G":["$11",[]],"s":false,"S":true}
+0:{"P":null,"b":"nTM0tET0S1RfKB5jdgnRh","p":"/t2-mapper","c":["",""],"i":false,"f":[[["",{"children":["__PAGE__",{}]},"$undefined","$undefined",true],["",["$","$1","c",{"children":[[["$","link","0",{"rel":"stylesheet","href":"/t2-mapper/_next/static/css/71910d47103c2b82.css","precedence":"next","crossOrigin":"$undefined","nonce":"$undefined"}]],["$","html",null,{"lang":"en","children":["$","body",null,{"children":["$","$L2",null,{"parallelRouterKey":"children","error":"$undefined","errorStyles":"$undefined","errorScripts":"$undefined","template":["$","$L3",null,{}],"templateStyles":"$undefined","templateScripts":"$undefined","notFound":[[["$","title",null,{"children":"404: This page could not be found."}],["$","div",null,{"style":{"fontFamily":"system-ui,\"Segoe UI\",Roboto,Helvetica,Arial,sans-serif,\"Apple Color Emoji\",\"Segoe UI Emoji\"","height":"100vh","textAlign":"center","display":"flex","flexDirection":"column","alignItems":"center","justifyContent":"center"},"children":["$","div",null,{"children":[["$","style",null,{"dangerouslySetInnerHTML":{"__html":"body{color:#000;background:#fff;margin:0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:#000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}"}}],["$","h1",null,{"className":"next-error-h1","style":{"display":"inline-block","margin":"0 20px 0 0","padding":"0 23px 0 0","fontSize":24,"fontWeight":500,"verticalAlign":"top","lineHeight":"49px"},"children":404}],["$","div",null,{"style":{"display":"inline-block"},"children":["$","h2",null,{"style":{"fontSize":14,"fontWeight":400,"lineHeight":"49px","margin":0},"children":"This page could not be found."}]}]]}]}]],[]],"forbidden":"$undefined","unauthorized":"$undefined"}]}]}]]}],{"children":["__PAGE__",["$","$1","c",{"children":[["$","$L4",null,{"Component":"$5","searchParams":{},"params":{},"promises":["$@6","$@7"]}],null,["$","$L8",null,{"children":["$L9",["$","$La",null,{"promise":"$@b"}]]}]]}],{},null,false]},null,false],["$","$1","h",{"children":[null,[["$","$Lc",null,{"children":"$Ld"}],null],["$","$Le",null,{"children":["$","div",null,{"hidden":true,"children":["$","$f",null,{"fallback":null,"children":"$L10"}]}]}]]}],false]],"m":"$undefined","G":["$11",[]],"s":false,"S":true}
 6:{}
 7:"$0:f:0:1:2:children:1:props:children:0:props:params"
 d:[["$","meta","0",{"charSet":"utf-8"}],["$","meta","1",{"name":"viewport","content":"width=device-width, initial-scale=1"}]]

scripts/convert-dif.ts

@@ -1,5 +1,6 @@
 import fs from "node:fs/promises";
 import { execFileSync } from "node:child_process";
+import { parseArgs } from "node:util";
 
 const BLENDER_PATH =
   process.env.BLENDER_PATH ||
@@ -9,10 +10,21 @@ const BLENDER_PATH =
  * Find all .dif files in `docs/base` and convert them to glTF.
  * All files are passed to Blender in a single invocation for speed.
  */
-async function run() {
+async function run({ onlyNew }: { onlyNew: boolean }) {
   const inputFiles: string[] = [];
   for await (const inFile of fs.glob("docs/base/**/*.dif")) {
-    inputFiles.push(inFile);
+    const glbFile = inFile.replace(/\.dif$/, ".glb");
+    if (onlyNew) {
+      try {
+        await fs.stat(glbFile);
+      } catch (err) {
+        if (err.code === "ENOENT") {
+          inputFiles.push(inFile);
+        }
+      }
+    } else {
+      inputFiles.push(inFile);
+    }
   }
 
   if (inputFiles.length === 0) {
@@ -35,4 +47,13 @@ async function run() {
   );
 }
 
-run();
+const { values } = parseArgs({
+  options: {
+    new: {
+      type: "boolean",
+      default: false,
+    },
+  },
+});
+
+run({ onlyNew: values.new });