fix: マウスドラッグのパン操作を直感的に修正 - #31
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パン操作のスケーリング変換でハードコード値(400)を使用していたため、 マウスの移動量とSVGの移動量が一致しない問題を修正。 SVG要素のgetBoundingClientRect()で実際のピクセルサイズを取得し、 1:1対応の直感的なパン操作を実現。 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
useRef+getBoundingClientRect()でSVG要素の実寸を取得し、マウス移動量とSVGの移動量が1:1で対応するように改善Test plan
npm run buildでビルドが通ることを確認🤖 Generated with Claude Code