INNER CODE UNIT · Python

begin

unitedrhino/things · scripts/generate-energy-demo-svg.py:91

        begin = index * frame_seconds
        lines.extend(
            [
                f'  <image width="{width}" height="{height}" visibility="{base_visibility}" href="data:image/jpeg;base64,{encoded}">',
                (
                    '    <animate attributeName="visibility" '
                    f'values="visible;hidden;hidden" keyTimes="0;{visible_until:.8f};1" '
                    f'begin="{begin:.1f}s" dur="{demo.duration}s" repeatCount="indefinite" calcMode="discrete"/>'
                ),
                "  </image>",
            ]
        )
    lines.append("</svg>")
    output.write_text("\n".join(lines) + "\n", encoding="utf-8")

    if output.stat().st_size > MAX_SVG_BYTES:
        raise RuntimeError(f"{output.name} 超过 5 MB：{output.stat().st_size} bytes")
    tree = ET.parse(output)

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