Simple Bezier Drawing Tool
The Drawing Tool
The drawing tool has three modes of drawing, which can be picked from
a menu:
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Extending
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Adding one more point to the control polygon.
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Editing
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Moving existing control points by picking and dragging them.
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Deleting
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Deleting an existing control point by picking it.
There are two additional buttons:
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Clear - Resets and clears all drawing area.
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Show de-Casteljau - Enters the "Show de-Casteljau" mode.
The "Show de-Casteljau" mode demonstrates the steps in the de-Casteljau
algorithm by clicking the Step button. Different values of the parameter
t can be chosen using the scroll bar. The OK button returns to the
drawing session.