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Example of Bspline curve
Some ways this could be extended:
- Click midpoint between two key points to insert a new key point.
- Click on a key point to delete it.
- Toggle between open and closed curve.
- Toggle curve appearance: stroke or fill or both in different colors.
- Toggle key points between visible and invisible.
- Support multiple curves.
- Use multiple bsplines to create your own font.
- Build a font designer.
- Use multiple bsplines to make an animated face.
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