Curve draw tool's cursor depth mode use a random Z value when viewport camera is orthographic #101347
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opened 2022-09-25 05:40:47 +02:00 by Zhen Dai
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Reference: blender/blender#101347
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System Information
Operating system: macOS-12.5.1-x86_64-i386-64bit 64 Bits
Graphics card: Intel(R) Iris(TM) Plus Graphics OpenGL Engine Intel Inc. 4.1 INTEL-18.8.4
Blender Version
Broken: version: 3.3.0, branch: master, commit date: 2022-09-06 15:39, hash:
0759f671ce
Worked: N/A
Short description of error
When drawing a curve at Top view, using Cursor Depth mode, my expectation is for a spline to appear at XY plane, at cursor's world space Z position; but what actually happens is a spline on XY plane with a random Z value, this issue happens when my viewport camera is in orthographic mode.
I wasn't able to reproduce this issue immediately with a new blend file, but it does fail in my uploaded blend file example, and I have experienced this many times in recent usage, suggesting some unrelated settings might have trigger this problem.
(If this is by design, the manual page need to go much deeper explaining this behavior, I certainly couldn't figure out how it works myself via googling.)
Exact steps for others to reproduce the error
draw-curve-bug.blend
Added subscriber: @Zhen-Dai
Added subscribers: @ideasman42, @mano-wii
Changed status from 'Needs Triage' to: 'Confirmed'
I can confirm the problem.
Apparently the problem is because
ED_view3d_win_to_3d_on_plane
doesn't work properly when thedo_clip
option istrue
and the view is orthographic.(Tagging @ideasman42 as the operator was introduced in
8ac662c77a
)@mano-wii Is there a way to disable
do_clip
option that you mentioned here? I would like to use cursor depth mode because surface mode cause my geoemetry to z-fight with the surface draw on.This issue was referenced by
93bbaad2f8
This issue was referenced by
2004827bc9
Changed status from 'Confirmed' to: 'Resolved'