26 lines
992 B
Python
26 lines
992 B
Python
"""Bounding box coordinate normalization for Docling output.
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Docling's BoundingBox uses two possible coordinate origins:
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- TOPLEFT: y=0 at top, t < b (t is smaller, closer to origin)
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- BOTTOMLEFT: y=0 at bottom, t > b (t is larger, further from origin)
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The frontend canvas uses TOPLEFT coordinates. This module ensures all
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bboxes are normalized to TOPLEFT [left, top, right, bottom] before
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being sent to the frontend.
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"""
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from docling_core.types.doc.base import BoundingBox, CoordOrigin
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def to_topleft_list(bbox: BoundingBox, page_height: float) -> list[float]:
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"""Convert a Docling BoundingBox to a [l, t, r, b] list in TOPLEFT origin.
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Args:
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bbox: Docling BoundingBox (any origin).
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page_height: Height of the page (needed for BOTTOMLEFT conversion).
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Returns:
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[left, top, right, bottom] in TOPLEFT coordinates.
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"""
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normalized = bbox.to_top_left_origin(page_height)
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return [normalized.l, normalized.t, normalized.r, normalized.b]
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