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Trouble report 399

Horizontal panning and hotspots are incorrect when "Automatic Resize" is used for a partial panorama with PTViewer

Versions affected

3.0 - 3.2


If you select the "Automatic Resize" option on the Save Image As dialog box, horizontal panning and hotspots will not work correctly for partial panoramas (less than 360 degrees) in PTViewer format:

  1. The viewer allows you to pan beyond the left end of the image, revealing a gray background. 
  2. The viewer stops before the right hand end of the image, preventing you from displaying the entire image.
  3. Hotspots are displaced to the left of their correct position.


To work around this problem, control the size of your panorama before applying hotspots. You can do this with the Resize command (New image menu) or by selecting "Image height" or "Image width" and entering an value for the height or width on Wizard Step 5. If you do enter a value, you can change the value later. To change the value later:

  1. Exit the Wizard by clicking "Done".
  2. Right-click on the "Resized" thumbnail and select "Show Source".
  3. Enter a new size and press "OK".
  4. Double-click the "Final image" thumbnail before applying hotspots or saving the image.

To use this technique, begin by entering an arbitrary starting value for the height (e.g. 400) in the Wizard. Complete the panorama and exit the Wizard. Use the "Compute file size" button on the Save Image As dialog box to determine  the file size. Resize the image (as described above) to be larger or smaller and test the file size using the "Compute file size" button. When you reach a good file size, add your hotspots to the final image and then save as IVR.


Corrected in V3.3.

Revised: June 23, 2004

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