Lets you select the circle's center from a relative (or absolute) Euler pole, selectable from the popup menus in the window like the figure below. Once you made your pole choice, the center is already defined and you only have to give another left click to select a point on the perimeter. Now, if you want to change the circle’s radius or move it double-click on the circle. A red point shows the center (if visible on the figure). Click and drag to move the circle. The radius can be changed by click and dragging the red circle on the perimeter. These and other settings may be also done in the parameter window that has meanwhile shown up. Double clicking again removes the circle’s editing properties. If the circle is of the Circle about an Euler pole type, right clicking lets you choose to calculate the Euler velocity on the point where the red circle is displayed.

Copyright © <2010>, <Joaquim Luis>

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