def three_plane(images, orient='clin', samples=128, cbar=None, contour=None,
    interactive=False):
    """
    Draw a standard 3-plane view through the center of the image
    
    Parameters:

    - images -- Either a filename (in a string or Path object) or a list of Layer objects
    - orient -- 'clin' or 'preclin'
    - sample -- Number of samples, default is 128, higher is better but slower
    - cbar -- Adds a colorbar. Either 'True' or an integer giving the layer the colorbar is from
    - contour -- Value(s) that contours are drawn at. Requires that cbar be set - contours will come from same layer
    - interactive -- Add sliders and make the view interactive
    """
