Add Ponoko export code. Still need autosize

package.json

@@ -3,6 +3,7 @@
   "workspaces": [
     "core",
     "sketches",
-    "thick-cut"
+    "thick-cut",
+    "ponoko-export"
   ]
 }

ponoko-export/index.js

@@ -0,0 +1,76 @@
+const fs = require('fs');
+const path = require('path');
+
+// The min/max bounds is rounded inward to be safe
+const sizeSpecs = {
+  '24x12': {
+    min: {x: -272, y: 5},
+    max: {x: 268, y: 268},
+    mmPerUnit: 1.1024794,
+  },
+  P2: {
+    min: {x: 15, y: 15},
+    max: {x: 1102, y: 1102},
+    mmPerUnit: 0.3527778,
+  },
+};
+
+function getPathsBounds(paths) {
+  const min = {x: Infinity, y: Infinity};
+  const max = {x: -Infinity, y: -Infinity};
+
+  for (const path of paths) {
+    for (const v of path) {
+      if (v.x < min.x) {
+        min.x = v.x;
+      }
+      if (v.x > max.x) {
+        max.x = v.x;
+      }
+      if (v.y < min.y) {
+        min.y = v.y;
+      }
+      if (v.y > max.y) {
+        max.y = v.y;
+      }
+    }
+  }
+
+  return {min, max};
+}
+
+function getTransfromToFit(fromBounds, toBounds) {
+}
+
+function cutPathsToPonokoSVG(paths, sizeStr) {
+  const pieces = [];
+
+  pieces.push('<g id="isovoxel" fill="none" stroke="rgb(0,0,255)" stroke-width="0.01mm">\n');
+  for (const path of paths) {
+    pieces.push('<path d="');
+    for (let i = 0; i < path.length; i++) {
+      const p = path[i];
+      pieces.push(`${i ? 'L' : 'M'} ${p.x} ${p.y} `);
+    }
+    pieces.push('Z" />\n');
+  }
+  pieces.push('</g>\n');
+
+  // Size to fit
+  // const designBounds = getPathsBounds(paths);
+
+  /*
+  // FOR VERIFYING SPECS
+  const spec = sizeSpecs[sizeStr];
+  pieces.length = 0;
+  pieces.push(`<rect x="${spec.min.x}" y="${spec.min.y}" width="${spec.max.x-spec.min.x}" height="${spec.max.y-spec.min.y}" fill="none" stroke-width="0.01mm" stroke="rgb(0,0,255)" />`);
+  */
+
+  const PLACEHOLDER = '<g id="REPLACEME" />';
+  const templateFileStr = fs.readFileSync(path.resolve(__dirname, 'templates/' + sizeStr + '.svg'), 'utf8');
+  return templateFileStr.replace(PLACEHOLDER, pieces.join(''));
+}
+
+module.exports = {
+  cutPathsToPonokoSVG,
+};

ponoko-export/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "isovoxel-ponoko-export",
+  "version": "0.1.0",
+  "private": true
+}