toggle selected off-curve point(s)

toggle_bcp_selection.py

'''
toggle bcp selection
'''


def toggle_bcp_selection(bcp):
    pts = bcp.contour.points
    p_prev = pts[(bcp.index - 1) % len(pts)]
    p_prev_2 = pts[(bcp.index - 2) % len(pts)]
    p_next = pts[(bcp.index + 1) % len(pts)]
    p_next_2 = pts[(bcp.index + 2) % len(pts)]

    if p_prev.type == 'curve' and p_prev_2.type == 'offcurve':
        bcp_opposite = p_prev_2
    elif p_next.type == 'curve' and p_next_2.type == 'offcurve':
        bcp_opposite = p_next_2
    else:
        bcp_opposite = None
    if bcp_opposite:
        bcp.selected = False
        bcp_opposite.selected = True


g = CurrentGlyph()
for point in g.selectedPoints:
    if point.type == 'offcurve':
        toggle_bcp_selection(point)