> For the complete documentation index, see [llms.txt](https://docs.world-creator.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.world-creator.com/ja/rifarensu/terrain/effects/fast-flow.md).

# 高速フロー

## 概要

Fast Flow エフェクトは流体粒子シミュレーションを実行し、そこからマスクを生成します。

## パラメータ

<table><thead><tr><th width="199.7999267578125">プロパティ</th><th>説明</th></tr></thead><tbody><tr><td><strong>反復回数</strong></td><td>シミュレーションが実行される反復回数です。</td></tr><tr><td><strong>速度しきい値</strong></td><td>この値未満の速度を持つ粒子は除去されます。</td></tr><tr><td><strong>雨の強さ</strong></td><td>シミュレーション開始時に落とされる雨粒子の数です。</td></tr><tr><td><strong>滑らかさ</strong></td><td>生成されたマスクを滑らかにします。</td></tr><tr><td><strong>流れのカットオフ</strong></td><td>一定量以下の水分を持つすべての粒子を除去します。</td></tr><tr><td><strong>流れの滑らかさ</strong></td><td>個々の流れの間にあるより柔らかな領域をブレンドします。</td></tr></tbody></table>

## 結果

<div><figure><img src="/files/804abd2a144b72c2073eb91ef4774f007139d70d" alt=""><figcaption></figcaption></figure> <figure><img src="/files/2d42eab8de46d3dd86cfabcd259b3fcefa23b2ed" alt=""><figcaption></figcaption></figure></div>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.world-creator.com/ja/rifarensu/terrain/effects/fast-flow.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.