implement panning, mouse wheel zoom, don't crash on `ValueError`

Vindaar / ggplotnim

A port of ggplot2 for Nim

https://vindaar.github.io/ggplotnim

MIT License

175 stars 15 forks source link

Closed Vindaar closed 10 months ago

Vindaar commented 10 months ago

Makes the interactivity with the mouse at least usable. :)

Left mouse button: hold to pan
Right mouse button: hold to zoom to a rectangle upon release
Mouse wheel: zoom towards mouse cursor position (zoom amount: -d:ZoomFactor=<int>, by default 10 == 10 % of current viewport size)