This visualization reproduces a geometric pattern composed of triangular polygons arranged in two overlapping fan-like sets. The polygons radiate from the top-right corner across the full width and height of the viewport, creating a layered lattice of intersecting shapes outlined in black. The rendering uses React with D3’s `select` and `join` methods to bind array data to SVG `polygon` elements, where each polygon’s points are generated programmatically by the `getData1` function using viewport dimensions. The example demonstrates a pure SVG approach with no external data sources, relying solely on computed coordinates.