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'''
(*)~---------------------------------------------------------------------------
Pupil - eye tracking platform
Copyright (C) 2012-2018 Pupil Labs

Distributed under the terms of the GNU
Lesser General Public License (LGPL v3.0).
See COPYING and COPYING.LESSER for license details.
---------------------------------------------------------------------------~(*)
'''

import plugin
from pyglui.cygl.utils import draw_points_norm,RGBA
from pyglui import ui

class Display_Recent_Gaze2(Plugin):
    """
    DisplayGaze shows the three most
    recent gaze position on the screen
    """
    icon_chr = '^_^'
    icon_font = 'pupil_icons'

    def __init__(self, g_pool):
        super().__init__(g_pool)
        self.order = .8
        self.pupil_display_list = []

    def init_ui(self):
        # Create a floating menu
        self.add_menu()
        self.menu.label = 'Display_Recent_Gaze2'
        # Create a simple info text
        help_str = "Display recent gaze (too)"
        self.menu.append(ui.Info_Text(help_str))


    def recent_events(self,events):
        for pt in events.get('gaze_positions',[]):
            self.pupil_display_list.append((pt['norm_pos'] , pt['confidence']*0.8))
        self.pupil_display_list[:-3] = []


    def gl_display(self):
        for pt,a in self.pupil_display_list:
            #This could be faster if there would be a method to also add multiple colors per point
            draw_points_norm([pt],
                        size=35,
                        color=RGBA(1.,.2,.4,a))
    def deinit_ui(self):
        self.remove_menu()

    def get_init_dict(self):
        return {}
    
    @property
    def pretty_class_name(self):
        return "My Plugin