PNS router pushes "floating" vias in to traces and creates DRC

[Frank Severinsen]

Please see attached video.

If a via isn't connected via a trace, the PNS can push it into a trace, causing a DRC.

Tested on Nightly and pre 5.1.3

Application: KiCad
Version: 6.0.0-unknown-b5cf03f~100~ubuntu19.04.1, release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.64.0 OpenSSL/1.1.1b zlib/1.2.11 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) libssh/0.8.6/openssl/zlib nghttp2/1.36.0 librtmp/2.3
Platform: Linux 5.0.0-17-generic x86_64, 64 bit, Little endian, wxGTK
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8) GTK+ 3.24
    Boost: 1.67.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.64.0
    Compiler: GCC 8.3.0 with C++ ABI 1013

Build settings:
    KICAD_SCRIPTING=ON
    KICAD_SCRIPTING_MODULES=ON
    KICAD_SCRIPTING_PYTHON3=ON
    KICAD_SCRIPTING_WXPYTHON=ON
    KICAD_SCRIPTING_WXPYTHON_PHOENIX=ON
    KICAD_SCRIPTING_ACTION_MENU=ON
    BUILD_GITHUB_PLUGIN=ON
    KICAD_USE_OCE=ON
    KICAD_USE_OCC=OFF
    KICAD_SPICE=ON

[eelik (eelik)]

Tomasz, because you took this, can you say if this is the same thing which has bugged me, namely that if I drag a lone via with D in PNS routing mode (grabbing the via directly, not pushing it with a track as in the video) it doesn't respect DRC and doesn't push other items?

[Jeff Young (jeyjey)]

@Tom, I wandered into this area trying to fix another bug (https://bugs.launchpad.net/kicad/+bug/1833214).

I'm not sure how much success I'll have here, but I just wanted to flag that I am currently working in this area.

Cheers,
Jeff.

[Jeff Young (jeyjey)]

OK, I didn't fix the original bug, but I did fix:

1) dragging a free (stitching) via now shoves
2) dragging a free via now respects DRC
3) via dragging now supports spring-back while dragging

I'll commit it shortly after some more testing.

[KiCad Janitor (kicad-janitor)]

Fixed in revision 79934a327e0746bfee280e0a4fadfc500e676e94
https://git.launchpad.net/kicad/patch/?id=79934a327e0746bfee280e0a4fadfc500e676e94