Realistic, procedurally generated coffee stains for QGIS print layouts.
Adds procedurally generated, realistic coffee stains (cup ring, spill, drip) to the current QGIS print layout. Deegan edge profile + fBm + stick-slip, with paper porosity, a Marangoni central spot and a dewetting interior network. Composited with the Multiply blend mode and rendered at export-aware DPI. Uses numpy (bundled with QGIS); optionally uses scipy.ndimage for sharper edges and falls back to a radial approximation when it is unavailable. Licensed under GPL-3.0-or-later.
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