| Author |
Message |
    
Scott Brayshaw
| | Posted on Thursday, September 07, 2000 - 3:29 pm: |   |
I am able to use the Panorama Factory to create great Panos, but I've realized that a portion of the top and bottom of the pano gets cut-off when I convert to QTVR. The odd thing is that if I zoom in, I'm able to see more of the image, but when I'm zoomed out, I'm unable to see it. For example, I made a pano of some mountains. When I'm zoomed out, all the mountain tops are cutoff in the QTVR, but if I zoom in, the tops of the mountains come into view. Is this normal or am I doing something wrong? |
Anonymous
| | Posted on Friday, September 08, 2000 - 3:00 pm: | |
How do you get QTVRs to preload, rather than starting as that black screen with lines? |
John Strait
| | Posted on Friday, September 08, 2000 - 6:05 pm: | |
The QTVR viewer is a product of Apple Computer and is outside the control of Smoky City Design. Details of its operation are beyond the scope of The Panorama Factory and this website.
All panorama viewers that de-warp a cylindrical image (QTVR) or spherical image (IVR, etc.) to flatten it onto the display screen will truncate the top and/or bottom of the image in the corners of the view. I think you will find that the tops of the mountains are visible when they are at the center of the view.
I cannot diagnose this problem further without more details (screen capture, etc) from the author of the question. Please give an email address when asking questions so that I can request additional information if needed. |
sbrayshaw
| | Posted on Saturday, September 09, 2000 - 1:14 pm: | |
Hello John-
Please see the example at http://www.4x4trails.net. Go to the 'Panos' section and select the 'Wheeler Lake' image. This was created with your software.
Thanks-Scott |
John Strait
| | Posted on Saturday, September 09, 2000 - 3:03 pm: | |
Hi Scott,
Thanks for the additional information. I visited the website you mentioned. Here's what I found out.
It appears that the QuickTime VR viewer plug-in behaves the way you describe if you specify too small a value for the height of the viewer in your html file. Each QuickTime VR .MOV file seems to have a minimum height requirement. If you specify a value smaller than this height, the top and bottom get cut off at lower zoom values. The minimum height is probably based in some way on the size or field of view of the panorama.
Increasing the height value from 200 to 300 corrects this problem for the Wheeler Lake panorama you mentioned.
You'll find that the other panoramas on the same page (built with other applications) exhibit the same problem if you reduce the viewer height to a small enough value. For example, the top and bottom of the Bill Moore Lake panorama are cut off with a viewer height of 150.
The QTVR viewer is a product of Apple Computer and is outside my control. Perhaps you should contact Apple Computer to find out why the plug-in viewer behaves this way.
It is interesting to note that the stand-alone QuickTime viewer (Windows application program) from Apple does not behave this way. It correctly shows the panorama at all zoom values and all window sizes.
I hope this helps! |
John Strait
| | Posted on Wednesday, May 23, 2001 - 11:53 pm: | |
Here is some additional information about this problem:
The Panorama Factory does not provide direct control over the displayed size of a QTVR image. Editing the WIDTH= and HEIGHT= values of the quicktime embed tag in the HTML file does not work correctly to change the displayed size.
Increasing the size beyond 400x320 merely surrounds the image with whitespace. Reducing the size below 400x320 clips the viewer, and in doing so removes the QuickTime toolbar.
Here is the workaround:
Adding "scale=tofit" to the HTML code corrects the problem. For example:
<embed src="test.mov"
width="200" height="160" scale=tofit
pluginspage="http://www.apple.com/quicktime"
controller="true" bgcolor="ffffff">
The next bug-fix release of The Panorama Factory will add the "scale=tofit" automatically. |
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