pub fn check_rigid(
mechanism: &Mechanism<'_>,
tree: &Tree,
freedom: &BTreeMap<String, usize>,
) -> GeopResult<()>Expand description
Refuses parts that mates alone hold together but not rigidly: those of
mechanism that freedom — how free each placed part is, by name,
with every joint held at its coordinates — says can still move. Of the
links of tree, which hold every part.