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@morphio

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posted an article

Canvas の表示幅と書き出し画像の幅を別々にテストする

posted an article

File.type が空でも画像ファイルが空とは限らない

posted an article

画像の出力名は最後の拡張子だけを置き換える

posted an article

putImageData() は globalAlpha を適用せずに画素を書き込む

posted an article

imageSmoothingQuality は imageSmoothingEnabled が true のときに使う

posted an article

lineWidth に 0 を代入しても線は消えない

posted an article

getImageData() の座標は変換行列で移動しない

posted an article

getImageData() の範囲外は透明な黒で埋まる

posted an article

canvas.width を同じ値にしても描画状態はリセットされる

posted an article

clip() の解除には保存した描画状態へ戻す
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