Parabolic Arcs

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The parabolic arc tool draws a parabolic arc which is part of a parabola with a vertical axis. The three points define the two end points and a point on the parabolic arc.

You can draw this arc in two ways.

 

Click AND HOLD the left mouse button – this determines one end of the arc.
Move the mouse (while holding the button) to the other end of your arc.  While you are moving the mouse, FX Draw will synthesize a third point and show you an arc.  Release the button when you are at the second point.
Click AND HOLD the left mouse button and move the mouse to a third point on your arc. As you move the mouse, FX Draw will draw an arc defined by your points.  Release the button when you are at the third point.

 

Alternatively you can click three times - once on each point.