OS: Windows 10
Browser: Chromium and Firefox
Playground: https://playground.babylonjs.com/#112FXI#2
Desc: I’m trying to drag a mesh with physics enabled with constraint, to make dragging more natural, but when the mesh VASE_CYL_VASE_CYL_CERAMIC_0 being clicked, it flies out.
Video:
cc @Cedric
Let’s be patient, though, as @Cedric is currently on vacation.
I think it’s due to a miscalculation of the position due to scaling (yours or babylonjs’).
After resetting the model scaling it behaves normally. Here is an example of pg.
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This is an interesting find. I’l check and see if I can find a fix in bjs.
I did some tries and @qq2315137135 is right, it’s a miscalculation in pivot for the constraint. It’s even more visibile with a scaling of 0.9.
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How could I compute pivot correctly, so the mesh does not move when pointer does not move? Thank you in advance.
You need to modulate the pivot position with the scaling.
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Can you kindly provide more info on this? Does it mean multiply the axis with scaling like this?
yes, scaling object and local coord.
check lines 32 and 102
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Thank you, it works 
1 Like