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Point constrained to line has extra degree of freedom #654

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socialhacker opened this issue Jul 18, 2020 · 3 comments
Closed

Point constrained to line has extra degree of freedom #654

socialhacker opened this issue Jul 18, 2020 · 3 comments

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@socialhacker
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System information

SolveSpace version: e.g. 3.0~211ae8c4

Operating system: Arch Linux x86_64

Expected behavior

When a point is constrained to lie on a line that is perpendicular to the workplane I expect that would account for all of the degrees of freedom of the point.

Actual behavior

The group that contains the point (and nothing else) reports one degree of freedom unconstrained. But the point can't be moved.

Additional information

Here's a minimal test case:

point_on_line_dof.slvs.gz

@ghost
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ghost commented Jul 18, 2020

Probably duplicate of #599

@phkahler
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Yes, what @Symbian9 said. There is no way to know that the line will never be in-plane, in which case you'd have 1 DoF for the point. Constrain to a point instead of a line.

@socialhacker
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Agreed, I missed that one because it was already closed and I only looked through the open issues. :)

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