How to hide the center point when the model is moving

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as shown in the figure, the rotation and movement of the model will be displayed. How can I hide it?

Mar.22,2021

that is the base point for rotation, zooming and translation of the Viewer camera, which cannot be removed at present, but you can try to change its size, which is nearly invisible. The default size is 1 unit

viewer.utilities.setPivotSize( 0.05 )

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