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Gray field holds a circle drawn from fine black lines radiating from an edge focal point, creating shaded volume.
Summary
Light gray square contains a large circle built from black lines that converge to a point on the right edge, darkening that side.
Visual description
Hundreds of straight radiating strokes increase in density toward the right origin, producing a spherical highlight on the left and deep shadow on the right. Paper grain is visible in the background. No typography or color beyond black and gray.
Key takeaway
Shifting the radial origin off-center generates 3D shading using only parallel line weight.
Reuse notes
Op-art posters, data-viz metaphors, or logo explorations needing mathematical precision.
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