Atlas landmark inspection — source geometry

BodyParts3D reference surfaces in original shared metres: +X left, +Y posterior, +Z superior. Geometric triangle picks require anatomical review. No simulation or subject calibration.

Bone-axis diagnostic angle

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Click a visible triangle to read source part, triangle index and barycentric coordinates. Drag to orbit. Shared scene centering is a camera operation; individual parts are unchanged.

Changing the angle moves the two forearm bones about the candidate axis only. Tissues remain at atlas bind for comparison. This is an axis inspection, not a simulated or anatomically accepted arm pose.

Region colours: red belly, blue proximal region, gold distal region. Cuts use an authored 25% peak cross-section rule, not measured tendon/aponeurosis boundaries. Derived bellies preserve non-convex source cross sections; white guides are authored centreline tangents. No skin or simulation.

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Checked transfer identities

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BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International. Original OBJ notices are retained in the source package. Official licence.