When drawing a line, each segment (an unbroken straight line part) should get progressively bigger or smaller.
even line := Each segment or
[[cluster___20240619_095817|cluster]] is of the same length.
There are gaps in even lines which may need anti-aliasing
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Documents/vimwiki/figures/screenshot_20240703_095147.png}}
This figure shows that if we only use even lines there is a limited number of shapes we can show, especially between the vertical line, the n:1 line, and before and after the 1:1 line.