Knife Project bad precision #42864
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Reference: blender/blender#42864
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System Information
Windows 8.1 x64
Renderer: GeForce GTX 860M/PCIe/SSE2
Blender Version
Broken: 2.72.2
c8995ec
Short description of error
Knife Project tool gives unexpected results depending on zoom level and global objects position. Some artifacts could be evaded by moving objects slightly right or increasing/reducing zoom level, but if somehow I managed to escape one artifact, another pops out.
This tool would be very handy in product/jewelry design if it will be predictable and stable.
Exact steps for others to reproduce the error
Here is few screenshots:
Changed status to: 'Open'
Added subscriber: @MikhailRachinskiy
This issue was referenced by
db0e2e7347
This issue was referenced by
2329b58fd3
Changed status from 'Open' to: 'Resolved'
Closed by commit
2329b58fd3
.Changed status from 'Open' to: 'Resolved'
Closed by commit
db0e2e7347
.Changed status from 'Resolved' to: 'Open'
Thanks for the comprehensive report.
Fixed 2 of the issues:
2329b58fd3
db0e2e7347
.This issue was referenced by
72341537e8
Changed status from 'Open' to: 'Resolved'
Closed by commit
72341537e8
.Note, all of the reported issues are fixed now from what I can tell, it even fixes some issue you didn't report :)
Big thanks! Test cases are perfectly handled.
But I still get artifacts:
In this case it's selection and cut artifacts, very rare to catch, usually fixed by moving viewport.
To reproduce open blend file and press Knife Project.
This is selection only artifact, cut is alright.
To reproduce open blend file and shake the viewport a few times to get rid off previous artifact, and eventually you'll get this one.
The same as previous — selection only artifact.
To reproduce open blend file, and try test set to the left from current one.
Could this be a weak design of Knife Project tool? So it doesn't matter how much you try, there is always be a possibility for an artifact?
Test file project_knf_2.blend
@MikhailRachinskiy,
project_knf_2.blend
is really related to #42459, so leaving this report closed & linked to the test-cast from there.That cutting at large or small scale will give problems. Its a real bug but unrelated to the other problems.
Id rather leave this for after 2.73 release.
OK, thanks!