Camera jump to nand with follow path constraint #87313
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Reference: blender/blender#87313
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 461.09
Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-04-03 16:32, hash:
8681504f06Worked: (newest version of Blender that worked as expected)
Short description of error
By adding a follow path constraint and choose a bezier curve as the target, the camera already jumps away by a fair amount. The position values remains unchanged though.
When you now go into camera view, and start to navigate in the camera view, be it move rotate or zoom, then the camera jumps away with every navigation step until it reaches nand.
Exact steps for others to reproduce the error
Open Blender
Add bezier circle
Add Follow Path constraint to the camera
Choose the Bezier circle as the target. This is the first position jump
Now go into camera view
Turn off Lock Camera to view so that you can navigate in the camera view
Move the camera view by a small amount. You will notice that the ground grid will vanish. The location of the camera changes dramatically. Up to the point where you reach nand in the location values of the camera.
afternavigation.blend
beforenavigation.blend
2021-04-08 18-09-30.mp4
Added subscriber: @tiles
Added subscriber: @filedescriptor
Changed status from 'Needs Triage' to: 'Confirmed'
I can confirm this on the latest 2.93.0 Alpha, branch: master, commit date: 2021-04-08 16:19, hash:
18dca6911b.Confirmed still an issue in latest
main(b664de2c8e).Also, a note about reproduction: the effect is far more pronounced when the path being followed is scaled by some amount. The camera still drifts away with an unscaled curve, but it's a much slower incremental effect in that case.