Thermal reliefs incorrectly calculated for TH oval pads

[Ionel]

See attached example board.

Application: kicad
Version: (5.1.0-1-g00a9b662f), release build
Libraries:
    wxWidgets 3.0.4
    libcurl/7.61.1 OpenSSL/1.1.1 (WinSSL) zlib/1.2.11 brotli/1.0.6 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) nghttp2/1.34.0
Platform: Windows 8 (build 9200), 64-bit edition, 64 bit, Little endian, wxMSW
Build Info:
    wxWidgets: 3.0.4 (wchar_t,wx containers,compatible with 2.8)
    Boost: 1.68.0
    OpenCASCADE Community Edition: 6.9.1
    Curl: 7.61.1
    Compiler: GCC 8.2.0 with C++ ABI 1013

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

[Rene Poeschl (poeschlr)]

Could you make a screenshot and mark out what you see vs what you expect?

[Ionel (ionelcompact)]

I expect all the thermal reliefs to be exactly as pad #2. As you can see on pad #6 and #10 the thermal relief is not correctly drawn.

Note: If the pad is changed from oval to circular the thermal reliefs are correctly drawn.

[KiCad Janitor (kicad-janitor)]

Fixed in revision b9944e2c06f5c56294051ddd360066e80773ced3
https://git.launchpad.net/kicad/patch/?id=b9944e2c06f5c56294051ddd360066e80773ced3