refactor: extract common components into UI package

packages/ui/primitives/signature-pad/helper.ts

@@ -0,0 +1,29 @@
+export const average = (a: number, b: number) => (a + b) / 2;
+
+export const getSvgPathFromStroke = (points: number[][], closed = true) => {
+  const len = points.length;
+
+  if (len < 4) {
+    return ``;
+  }
+
+  let a = points[0];
+  let b = points[1];
+  const c = points[2];
+
+  let result = `M${a[0].toFixed(2)},${a[1].toFixed(2)} Q${b[0].toFixed(2)},${b[1].toFixed(
+    2,
+  )} ${average(b[0], c[0]).toFixed(2)},${average(b[1], c[1]).toFixed(2)} T`;
+
+  for (let i = 2, max = len - 1; i < max; i++) {
+    a = points[i];
+    b = points[i + 1];
+    result += `${average(a[0], b[0]).toFixed(2)},${average(a[1], b[1]).toFixed(2)} `;
+  }
+
+  if (closed) {
+    result += 'Z';
+  }
+
+  return result;
+};