Physarum Vein Field

"use client";

import { useEffect, useRef } from "react";
import type { CSSProperties, ReactNode } from "react";

/**
 * PhysarumVeinField: a full-bleed background that grows a living transport
 * network. A quarter of a million slime-mould agents wander across black,
 * each leaving a trace and steering toward the strongest trace ahead of it,
 * until the traces gather into a luminous web of veins. The cursor is food:
 * the web reaches toward it and reorganises around it. A press plants a
 * glowing food node that the network connects to with thick trunk veins, then
 * slowly lets go.
 *
 * The whole simulation runs on the GPU (WebGL2, no compute shaders). Agents
 * live in a float texture (position, heading). Every step: an update pass
 * senses the trail map at three points ahead of each agent (front, left,
 * right), turns toward the strongest, and steps forward; a deposit pass draws

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}