✨ Added tutorial pattern

packages/tutorial/src/step8.js

@@ -0,0 +1,61 @@
+export default function(part) {
+  let {
+    Point,
+    points,
+    Path,
+    paths,
+    measurements,
+    options,
+    macro
+  } = part.shorthand();
+
+  let rotateThese = [
+    "edgeTopLeftCp",
+    "edgeTop",
+    "tipRight",
+    "tipRightTop",
+    "tipRightTopStart",
+    "tipRightTopCp1",
+    "tipRightTopCp2",
+    "tipRightTopEnd",
+    "tipRightBottomStart",
+    "tipRightBottomCp1",
+    "tipRightBottomCp2",
+    "tipRightBottomEnd",
+    "tipRightBottom",
+    "top",
+    "topCp2"
+  ];
+
+  while (points.tipRightBottomStart.x > -1) {
+    for (let p of rotateThese) points[p] = points[p].rotate(1, points.edgeLeft);
+  }
+
+  points.snapLeft = points.top.shiftFractionTowards(points.edgeTop, 0.5);
+
+  macro("round", {
+    from: points.edgeTop,
+    to: points.tipRight,
+    via: points.tipRightTop,
+    prefix: "tipRightTop",
+    render: true
+  });
+  macro("round", {
+    from: points.tipRight,
+    to: points.top,
+    via: points.tipRightBottom,
+    prefix: "tipRightBottom",
+    render: true
+  });
+
+  paths.rect = new Path()
+    .move(points.edgeTop)
+    .curve(points.edgeTopLeftCp, points.edgeLeftCp, points.edgeLeft)
+    .line(points.bottomLeft)
+    .line(points.bottomRight)
+    .line(points.edgeRight)
+    .curve(points.edgeRightCp, points.edgeTopRightCp, points.edgeTop)
+    .close();
+
+  return part;
+}