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SpiroJ is a simple generator of hypotrochoids and similar roulettes. The basic principle is rolling one circle on another circle - similar to the classic Spirograph toy, but more flexible. It can export drawing to SVG, EPS and AI formats.
Explore with geometric curves. Create images of spirograph curves,
This software plots spirograph curves. Mainly Epicycloid, Hypocycloid, Epitrochoid and Hypotrochoid curves.
You can color the images. Svave images in jpg/png format. Export curves to AutoCAD script file for importing to dwg format. Print your design.