Fix/intersecting entities

See merge request !2274

Dennis Gläser authored 4 years ago and Timo Koch committed 4 years ago

When checking geometric equality of 2d intersections, the order of the
corners of the raw entities cannot be guaranteed to be the same. Thus,
for geometric equality checks we have to compare against all corners.

Dennis Gläser authored 4 years ago and Timo Koch committed 4 years ago

In case of 2d intersection geometries, the raw intersections can have
very large aspect ratios, i.e. they can have very short and much longer
edges. The current epsilon might be chosen based on a short edge, in
which case the identity of an intersection might not be found.

Merge branch '969-python-small-finite-volume-example-based-on-grid-geometry-abstraction' into 'master'

[python] Small finite volume example based on grid geometry abstraction

Closes #969

See merge request !2454

Follow change dune_python_add_test in dune-common

See merge request !2470

Stay compatible with 2.7 and 2.8.

[test] fix labels for Maxwell-Stefan tests

See merge request !2472

[test][1p][root] Remove dependency on UMFPack

See merge request !2467

[material][spline] Fix compiler error gcc

See merge request !2466

Attempt to get rid of the gcc internal compiler error
about implicitly capturing `this` in a generic lambda.

Resolve "Document if density and viscosity can be changed in freeflow tests"

Closes #984

See merge request !2456

[newton] fix docu

See merge request !2465

Fix/materiallaw epsilon

See merge request !2461

[bugfix][gridcapabilities] Add missing include

See merge request !2463