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advanced rendering for AutoCAD
Artifacts in a solid without textures...
The areas affected by these artifacts were subtracted from the solid cylindrical structures with swept polyline path. I tried to upgrade to the latest version of NXT, but the result is the same. I use 64bit Windows7, Autocad 2011, 8GB, I do not understand the cause! It's a bug? Any ideas ......
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Replies to This Discussion
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Permalink Reply by Marc Chaumier on
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Sometimes, it happen when you have 2 or more solids, faces, at the same place. But the artefact is not so regular.
Good modelisation!
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Permalink Reply by Carlos Sieiro on
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Sure, I had never encountered such a geometrical artifact. Relieved or reduced by changing the perspective ... I have no idea ....
Thanks Marc ..
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Permalink Reply by Roy Hirshkowitz on
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This sort of thing is usually a precision problem. Make sure your units are correct and that the WCS origin isn't too far away. Other than that I'll need to take a look at it. Use the upload link.
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I moved the model close to the point 0,0,0.
I put nxt to work and continues to generate artifacts in the same place, depending on where you place your perspective, the artifacts are more or less ....
Attached is a picture with the detail and due to the weight of the file, I sliced the solid in the affected area and proceed to upload it for analysis .....
Thanks in advance
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The units for this model is listed as millimeters (_INSUNITS=4), yet it appears to be drawn in meters. This could be the source of the problem. Try changing the units to meters.
Also-- FACETRES is set to its default of 0.5. You can try a value like 2 or 3 to see if it makes a difference.
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Hi Roy, sorry for the late reply.
I modified the value _insunits 6 (meters). _Ddunits Are also in meters. Facetres in value 5. I uploaded the value of e _Isolines _Splinesegs.
The result is the same. The artifacts reappear. The problem is always solid cylinders or revolutioned splines, any other ideas?Thank you again...
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I wasn't able to reproduce the artifacts here. If you want to try again, you need to send a model with the correct view required to reproduce. Make it a WalkAbout view with fixed resolution (not viewport) so my screen will exactly match yours.
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