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| hollow stud not replaced by LGEO's one |
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Posted by: Bertrand Lequy - 2021-03-28, 12:13 - Forum: Rendering Techniques
- Replies (6)
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Hi,
I'm rendering a lot of part these days, and I only noticed recently that normal stud are replaced by LGEO's one but not hollowed stud.
I checkd old (2016) rendering of mine and find some files where it was the case. I tried the same parts today and the stud weren't smooth.
It wasn't on the same computer, so I something's different. Does anybody have an idea ?
I generate my pov file using LDView.
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| There'sa problem with part 527.dat |
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Posted by: Bertrand Lequy - 2021-03-26, 18:00 - Forum: Parts Tracker Discussion
- Replies (3)
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Hi, I suppose the matter comes from hi-res primitives, but when I open this file with LDview, and when I render it with pov-ray this helmet is hollowed, and some conditionnal lines don't match the trianlgles.
Problem disappear when I uncheck the primitives substitution.
Or is it a LDView problem I should post in Viewer's subforum ?
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| Rounding Errors in primitives? |
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Posted by: Tery Hamer - 2021-03-25, 18:42 - Forum: Official File Specifications/Standards
- Replies (23)
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I'm a newbie, so I am nervous about asking... can someone confirm that either A) I'm talking BS, or B) there are rounding errors in the Official LDraw Primitive .dat files?
These are mostly derived from PrimGen2 (- but I haven't checked all). Some of these files are perhaps 10 years old. Has anybody noticed this before?
AKAIK the standard is for the vectors in .dat files to be shown to 4 decimal places, removing trailing zeros.
For Rings, Cones the vector points for higher values of radii are a multiple of the cos/sin values of the segment angles times the radius. However, it would appear that the rounding is carried out on the cos/sin for the base radius (1, as used for Circle, Disc, etc), and <then> multiplied. That would be a No-No. For the base and lower radii, the error may be only 0.0001 in a few cases. But for the higher radii, these rounding errors mount up and impact the third decimal position.
So, BS or BUG?
tery
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| New 64 Bit AIOI ready for testing |
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Posted by: Willy Tschager - 2021-03-22, 11:44 - Forum: All Other Programs.
- Replies (3)
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Hi,
I compiled a 64 Bit version of the LDraw All-In-One-Installer and would appreciate if you could give it a try. The 64 Bit version installs exclusively 64 Bit programs:
LDCad
LeoCad
LPub3D
LDview
along with the usual goodies such as offline catalogue, models and links. Once this is published the 32 Bit AIOI will contain the rest of the progs such as MPDCenter or MLCad.
Please report if you run into issues with the new installer (which will be updated with the latest versions prior release):
www.holly-wood.it/tmp/LDraw_AIOI_2020-03_setup_64bit_v1.exe
w.
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