Initial project import

node_modules/@react-three/drei/core/ComputedAttribute.js

@@ -0,0 +1,33 @@
+import _extends from '@babel/runtime/helpers/esm/extends';
+import * as React from 'react';
+import { BufferAttribute } from 'three';
+
+/**
+ * Used exclusively as a child of a BufferGeometry.
+ * Computes the BufferAttribute by calling the `compute` function
+ * and attaches the attribute to the geometry.
+ */
+const ComputedAttribute = ({
+  compute,
+  name,
+  ...props
+}) => {
+  const [bufferAttribute] = React.useState(() => new BufferAttribute(new Float32Array(0), 1));
+  const primitive = React.useRef(null);
+  React.useLayoutEffect(() => {
+    if (primitive.current) {
+      var _ref;
+      // @ts-expect-error brittle
+      const parent = (_ref = primitive.current.parent) !== null && _ref !== void 0 ? _ref : primitive.current.__r3f.parent.object;
+      const attr = compute(parent);
+      primitive.current.copy(attr);
+    }
+  }, [compute]);
+  return /*#__PURE__*/React.createElement("primitive", _extends({
+    ref: primitive,
+    object: bufferAttribute,
+    attach: `attributes-${name}`
+  }, props));
+};
+
+export { ComputedAttribute };