Weird shadow noise artifact and extra lines on model

Rhino
1

Hi,

There are some weird artifacts appearing in my model in the rendered and arctic view.

First of all, there are extra lines appearing beyond the corner points of my polysurfaces.

lines
lines1368×1073 97.7 KB

Secondly, there are no shadows appearing in arctic view even when shadows are on. When you zoom in a lot, you can see what appears to be noise of the shadow?

strange artifacts
strange artifacts1368×1073 131 KB

artic
artic1368×1073 129 KB

I am guessing this issue is caused by some camera settings? I have no idea how to fix this, would appreciate if someone can help me out.

Here’s the rhino file
strange shadows.3dm (9.4 MB)

2

i don’t have rhino 8 but you should be able to solve it by moving your model to 0,0,0. Rhino freaks out when you are away from origin.

3

The model is quite close to the origin and I even changed units to meters from millimeters since I though its a floating point error, but to no avail.

4

Hi @Kyuubimode

The camera coordinates for the “Top” viewport are through the roof - I’ve no idea how you got the camera out there, but ZoomExtensAll fixes it here.

image
image506×295 4.98 KB

Use Camera and then Show to see just how far out in space the camera is.

image
image2706×1622 230 KB

This is what Rendered looks like after ZEA on my screen. The only objects that bleed through are curves within the block. ClearDrawOrder on those (using BlockEdit) if it’s not intentional.

image
image1920×1138 91.9 KB

HTH, Jakob

5

Thanks a lot Jakob! This was the fix I was looking for, and will help me troubleshoot when similar things happen. Regarding how this happened in the firstplace, I have no clue tbh. This particular file was baked using content cache from an existing file into a new file, maybe that could be the issue. I thought ZoomSelected would work but it seems to fix extents I need to use ZEA.