增加海康sdk获取高精度ptz

‘liusuyi’

2023-12-15 03f0316ede495bc4391b041232a982aa52e5d649

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// Bit masks to check which parts of element needs to be updated.
export const REDRAW_BIT = 1;
export const STYLE_CHANGED_BIT = 2;
export const SHAPE_CHANGED_BIT = 4;