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  geometry / geominfo / XithGeometryInfo / geometrycreator  (Read 932 times)
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Offline hawkwind

Junior Duke




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« Posted 2006-09-11 20:01:00 »

All

   Strangely enough I have never done the following.  I need to convert a TriangleArray to a TriangleStripArray.  How does one do this type of thing???
Offline Marvin Fröhlich

Senior Duke




May the 4th, be with you...


« Reply #1 - Posted 2006-09-12 07:38:58 »

All

   Strangely enough I have never done the following.  I need to convert a TriangleArray to a TriangleStripArray.  How does one do this type of thing???

You need to calculate the new vertices. Check how the real positions are, but let's assume, it is the following:

1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
TiangleArray:          TiangleStripArray:

3        4             4        3
+--------+             +--------+
|\       |             |\       |
| \      |             | \      |
|  \     |             |  \     |
|   \    |             |   \    |
|    \   |             |    \   |
|     \  |             |     \  |
|      \ |             |      \ |
|       \|             |       \|
+--------+             +--------+
1        2             1        2


Just calculate the right vertices for the other format and it should be done.
Offline Amos Wenger

Senior Duke




Everything's possible, but not everything's fun...


« Reply #2 - Posted 2006-09-12 16:45:27 »

Hmm Qudus you suggest a way to convert TriangleArrayStrip to TriangleArray, but hawkwind wants to do the other way round.
Have a look at nvidia stripifier. Don't know how it really works, but maybe *you*'re the one which makes it widely used, who know ?

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Offline Marvin Fröhlich

Senior Duke




May the 4th, be with you...


« Reply #3 - Posted 2006-09-12 19:04:43 »

Hmm Qudus you suggest a way to convert TriangleArrayStrip to TriangleArray, but hawkwind wants to do the other way round.

This can certainly be Wink. I didn't really remember how these ones were built. But the priciple should be just the same.
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