fix num segments of circle

Author: casperlamboo

src/shape/shapeToPoints.js

@@ -83,7 +83,7 @@ function shapeToPointsRaw(shapeData) {
       const { radius, segment } = shapeData.circle;
       const points = [];
       const circumference = 2 * radius * Math.PI;
-      const numSegments = Math.max(circumference * 2, 32);
+      const numSegments = Math.min(circumference * 2, 64);
       for (let rad = 0; rad <= segment; rad += Math.PI * 2 / numSegments) {
         const x = Math.sin(rad) * radius;
         const y = -Math.cos(rad) * radius;