• David C. Lonie's avatar
    Fix vtkAxis scaling when TileScale is set on the renwin. · ef328bcf
    David C. Lonie authored
    Now vtkAxis will show the same number of ticks and the
    same relative text size when magnifying the image. Text
    will still be a little funky if the scaling is anisotropic,
    but at the moment our freetype engine doesn't support
    anisotropic dpi (not sure if the MPL backend can or not).
    
    New API: vtkContextScene::GetLogicalTileScale() returns
    the renderwindow tilescale or (1, 1) depending on whether
    ScaleTiles is enabled.
    
    There are some random fixes where vtkAxis objects were being
    used without a scene, which led to segfaults when trying to
    look up the tile scale internally.
    ef328bcf
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