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Guest MatthiasS

BGL terrain format and VTPWidePoint data stream

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Hello Mathias,It seems to me that you came across the VTPChildPoint structure which was discussed in this forum. It is a structure not documented in the MS SDK docs. Please do a search with the keywords VTP and Child. Regards, Luis

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YES ! Thanks so much, Luis. That is exactly it and it also explains that reserved = 3 anomaly.This forum rocks, I guess I should stop by here more often.

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Thanks Dick, that helped me find some more discrepancies.Unfortunately I still run into one issue for which I have not found documentation.That is the reserved value in VTPPolyMethod2 (2 bits) being set to 1, 2 or 3. It must have some meaning cause my chugger goes out of sync after that. It only happens in a few files though (NAMWsceneryHL916190.bgl for example).Edit: correction ... I think there is just something wrong with my handling of VTPPolyMethod2Ex Matthias

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Ok, I missed the part where VTPPolyMethod2Ex and VTPPolyMethod1Ex have changed to 16 bit values. It's getting through now with no more problems. Thanks again for all the help.Matthias

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