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Custom Roundel

This is a simple tool to create a Transport for London roundel with custom text in the middle, and a choice of colours.


Font Scaling

An interesting problem that presented itself when I was developing this was how to scale the custom SVG text because the text size did not scale linearly with character number.

To solve this, I plotted the character to visual width ratio for a selection of roundel images and calculated a polynomial trendline that fit the points. The more the characters input, the smaller the font would scale.

Future Features

  • Custom colour input
  • Save SVG to file