add victory-animation story

stories/victory-animation.stories.tsx

@@ -0,0 +1,98 @@
+import { Meta } from "@storybook/react";
+import React, { useEffect } from "react";
+
+import { VictoryPie } from "../packages/victory-pie";
+import { VictoryAnimation, VictoryLabel } from "../packages/victory-core";
+import { storyContainer } from "./decorators";
+
+const meta: Meta<typeof VictoryAnimation> = {
+  title: "Victory Charts/SVG Container/VictoryAnimation",
+  component: VictoryAnimation,
+  tags: ["autodocs"],
+  decorators: [storyContainer],
+};
+
+export default meta;
+
+const ANIMATION_DATA = [
+  [
+    { x: 1, y: 0 },
+    { x: 2, y: 100 },
+  ],
+  [
+    { x: 1, y: 25 },
+    { x: 2, y: 75 },
+  ],
+  [
+    { x: 1, y: 50 },
+    { x: 2, y: 50 },
+  ],
+  [
+    { x: 1, y: 75 },
+    { x: 2, y: 25 },
+  ],
+  [
+    { x: 1, y: 100 },
+    { x: 2, y: 0 },
+  ],
+];
+
+const AnimationDemo = () => {
+  const [data, setData] = React.useState(ANIMATION_DATA[0]);
+  const [percent, setPercent] = React.useState(0);
+
+  useEffect(() => {
+    const interval = setInterval(() => {
+      const nextIndex =
+        (ANIMATION_DATA.indexOf(data) + 1) % ANIMATION_DATA.length;
+      setData(ANIMATION_DATA[nextIndex]);
+      setPercent(ANIMATION_DATA[nextIndex][0].y);
+    }, 2000);
+
+    // clean up interval on unmount
+    return () => clearInterval(interval);
+  }, [percent]);
+
+  return (
+    <div>
+      <svg viewBox="0 0 400 400" width="100%" height="100%">
+        <VictoryPie
+          standalone={false}
+          animate={{ duration: 1000 }}
+          width={400}
+          height={400}
+          data={data}
+          innerRadius={120}
+          cornerRadius={25}
+          labels={() => null}
+          style={{
+            data: {
+              fill: ({ datum }) => {
+                const color = datum.y > 30 ? "green" : "red";
+                return datum.x === 1 ? color : "transparent";
+              },
+            },
+          }}
+        />
+        <VictoryAnimation duration={1000} data={{ percent }}>
+          {(newProps) => {
+            return (
+              <VictoryLabel
+                textAnchor="middle"
+                verticalAnchor="middle"
+                x={200}
+                y={200}
+                text={`${Math.round(Number(newProps.percent))}%`}
+                style={{ fontSize: 45 }}
+              />
+            );
+          }}
+        </VictoryAnimation>
+      </svg>
+    </div>
+  );
+};
+
+export const DefaultRendering = () => {
+  return <AnimationDemo />;
+};