SVG波形ジェネレーター
なめらかな波、階段、山型、こぶの4つの形で、セクションの区切りを作成します。高さ、振幅、波の数、位相を調整し、1つまたは2つのレイヤーを重ねられます。塗りつぶした形や線だけの波をSVGで書き出し、CSSをコピーしたりPNGを保存したりできます。
プリセット
プリセットを選ぶとすべての設定が一度に反映されます。そこから微調整できます。
波形
背景色
波の色
レイヤー
プリセットはワンクリックですべての設定を反映し、ランダム生成は同じことを乱数で行います。
SVG
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CSS
.divider {
height: 120px;
background-color: #0b0b12;
background-image: 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20240Z%22%20fill%3D%22%232563eb%22%20%2F%3E%3C%2Fsvg%3E");
background-repeat: no-repeat;
background-position: center bottom;
background-size: 100% 100%;
}2つのセクションの間の波は装飾であり、スクリーンリーダーが読み上げる必要はありません。ダウンロードするSVGにはすべて aria-hidden を付けています。見出しが区切りを示しているので、そのままにしてください。
Tailwindクラス
relative h-[120px] w-full bg-[#0b0b12] text-[#2563eb] 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bg-no-repeat bg-bottom bg-[length:100%_100%]空の要素にこのクラスを指定してください。SVGの波形は背景画像として含まれています。
SVG波形ジェネレーターはどう動きますか？
幅1440、高さ240の座標系に点を計算します。なめらかな波は正弦波、階段状は水平・垂直の線分、山形は三角波です。丸い波は正弦波の一部を点としてサンプリングして描きます。
振幅はviewBox内の波の高さを、波の数は幅全体に入る繰り返しの数を決めます。位相はどのスタイルでも1周期の中で位置をずらし、0%と100%は同じ形になります。左右反転は形を水平方向に反転します。
塗りつぶしではパスをセクションの端まで閉じます。細線モードは波の開いた曲線だけを描き、領域の四角い枠は描きません。背後には、振幅と不透明度を抑えた2つ目の波を追加できます。
SVGは`preserveAspectRatio="none"`を使い、幅と高さを独立に拡大縮小します。表示する高さを変えると、ピクセル単位の振幅も変わります。CSSはURLに符号化したSVGを使い、PNGは選択した背景色とともにブラウザ内で描画します。
波形の設定
波形 なめらか 高さ 120px 振幅 46% 波の数 2 位相 18%
生成したSVG
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SVG波形ジェネレーターが対応するオプションとエッジケースは？
| パラメータ | 型 | デフォルト | 動作とエッジケース |
|---|---|---|---|
| なめらか | サンプリングした正弦波 | — | 正弦波の点を計算し、滑らかな曲線を作ります。 |
| 階段状 | 階段 | — | 水平と垂直の線分を交互につなぎ、階段状の輪郭を作ります。 |
| 山形 | 三角波 | — | 直線で上り下りする三角波を使います。 |
| 丸い波 | サンプリングした曲線 | — | 正弦波の絶対値を点として計算し、丸みのある波を作ります。 |
| 振幅 | 割合（%） | 46 | viewBox内の波の高さを指定します。ピクセル単位の振幅はSVGの表示高さに比例します。 |
| 波の数 | 個数 | 2 | 幅全体に入る波の繰り返しの数を指定します。 |
| 位相 | 割合 | 18% | どのスタイルも周期の一部だけ位置をずらします。0%と100%は同じです。 |
| 左右反転 | 水平の鏡像 | 無効 | 高さを変えず、パスを左右に反転します。 |
| レイヤー | 1または2 | 2 | 背後の波は振幅60%、位相差12%、不透明度45%で描きます。 |
| preserveAspectRatio | none | 常に使用 | 座標を要素のボックスに合わせ、幅と高さをそれぞれ独立に拡大縮小します。 |
よくある質問
CSSでセクションに波形区切りを付けるには？
SVGをセクションの末尾に貼るか、生成したCSSを背景画像として使います。出力ではURLの特殊文字を符号化済みです。要素の高さを調整して、区切りの見た目の高さを決めてください。
波が伸びたりつぶれたりして見えるのはなぜ？
`preserveAspectRatio="none"`では幅と高さを独立に調整します。幅を増やすと横に伸び、高さを増やすとピクセル単位の振幅も大きくなります。表示高さと振幅の設定を組み合わせて調整してください。
区切りはSVGと背景画像のどちらにすべき？
インラインSVGはマークアップや色の属性を編集しやすく、data URIの背景画像はCSSから再利用するときに便利です。どちらも同じ形を使います。出力には明示的な色の値が設定されています。
鏡像になる2つの区切りを作るには？
左右反転を使うと、水平方向の鏡像になります。位相は1周期の中で波の位置をずらします。同じ形をセクションの上に置く場合は、SVGを180度回転することもできます。
この区切りはアクセシブル？
装飾だけの区切りはスクリーンリーダーの読み上げ対象から外します。SVGには`aria-hidden="true"`と`focusable="false"`を含めています。内容の区切りは見出しとページ構造でも示してください。
波をセクションの末尾ではなく先頭に置くには？
`transform: rotate(180deg)`で区切りを上下反転します。左右の向きも変える場合は`scaleX(-1)`を使います。その後、レイアウトに合わせて高さと位置を調整してください。