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staticconstantCesium.BillboardMode.FixedXYZ : Number
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Ground mode. That is, the billboard is attached to the globe surface.
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staticconstantCesium.BillboardMode.FixedZ : Number
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Axis alignment mode. In this mode, the billboard will rotate with the camera in the horizontal direction. When the camera is directly above the bulletin board, all you can see is a line, that is, the bulletin board in this mode can only be moved horizontally. Selected.
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staticconstantCesium.BillboardMode.None : Number
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Screen alignment mode. That is, the billboard will rotate with the camera in any direction, always facing the screen.
