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Posts Tagged ‘rollover’

DJI confirms its drones are prepared for the GPS 2019 week rollover event

22 Mar

DJI has confirmed its drones are prepared for the GPS 2019 week rollover scheduled to take place on April 6. The event may disrupt some GPS receivers, but most manufacturers have confirmed that their systems have been tested ahead of time and are prepared for the rollover.

The GPS 2019 week rollover is an event that will take place due to how the Global Positioning System (GPS) works. Receivers are provided with time information from the GPS system, which uses a 10-bit week counter to count weeks from 0 to 1023. Upon reaching the end of that range, the system reverts back to 0 and starts over.

GPS receivers that aren’t prepared for the rollover may incorrectly report a date of 19.6 years in the past (1024 weeks), resulting in some GPS devices displaying a date of August 22, 1999, starting after the April 6 rollover. The first GPS rollover took place on August 21, 1999.

To avoid this complication, manufacturers must push out software updates to prepare their devices for the change. In a brief statement published on March 20, DJI said that all of its ‘platforms have been thoroughly tested’ and will not be impacted by the GPS rollover. DJI drone owners can continue to use the devices as normal.

Articles: Digital Photography Review (dpreview.com)

 
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Create a simple rollover in Fireworks CS4

10 Apr

A simple rollover swaps in the state directly under the top state and involves only one slice.
Creating and attaching a simple rollover

1. Ensure that the trigger object is not on a shared layer.

2. Select Edit > Insert > Rectangular Slice or Polygon Slice to create a slice on top of the trigger object.

3. Create a new state in the States panel by clicking the New/Duplicate State button.

4. Create, paste, or import an image to use as the swap image on the new state. Position the image beneath the slice you created in step 2. Although you are in state 2, the slice is visible.

5. Select State 1 in the States panel to return to the state that has the original image.

6. Select the slice and place the pointer over the behavior handle.

Selecting the behavior handle on a slice

Note: You can select the slice while in any state.

7. Click the behavior handle and select Add Simple Rollover Behavior from the menu.

8. Click the Preview tab and test the simple rollover, or press F12 to preview it in a browser.

Any suggestions, ideas? Feel free to comment on this article!

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