# Tag: geometry

## Self-similar petals

Original drawn in hand-coded PostScript from a path worked out using InkScape. Translating from InkScape’s SVG paths to PostScript is slightly annoying: PS uses Cartesian conventions, while SVG inverts the Y-axis. At least the SVG path commands map well to PostScript: **m** → *moveto*, **c** → *curveto*, **Z** → *closepath*, **S** → *stroke*.

There’s no magic to this figure. Each row of petals is half the length of the row outside it. As there are 6 petals arranged in a circle, each petal is 60° of arc. To make the half-step between rows, the petals are rotated 30°, so the rows have to be scaled by *sin* 30°, or ½.

Instagram filter used: Normal

## not much of anything really

## Tidied-up edition of Bourgoin’s Arabic Geometrical Design sourcebook on archive.org

Just uploaded Les éléments de l’art arabe: Le trait des entrelacs by Jules Bourgoin (aka *Arabic Geometrical Pattern & Design*) to archive.org. This is much cleaned up from the Google Books scan, which had many duplicate pages and no metadata.

This is much better than the (now returned) Kindle edition …