Freehand Shape Tool

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The Freehand Shape Tool lets you either sketch a function, or you can draw a freehand circle, segment or polygon and it will be recognized and converted to an exact shape. If a function f is created, you can compute its value at certain point, place a point on it or perform some transformations. Tangents and derivatives for these functions are not supported.

Note: You can use all the curve fitting commands on functions created by this Tool, eg FitSin[f]
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