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#!/usr/bin/env python
""" """
__author__ = "Théo de la Hogue"
__credits__ = []
__copyright__ = "Copyright 2023, Ecole Nationale de l'Aviation Civile (ENAC)"
__license__ = "BSD"
from typing import Tuple
from argaze import DataStructures
from argaze.AreaOfInterest import AOIFeatures
from argaze import GazeFeatures
import cv2 as cv
import numpy
class AOI2DScene(AOIFeatures.AOIScene):
"""Define AOI 2D scene."""
def __init__(self, aois_2d = None):
super().__init__(2, aois_2d)
def draw(self, frame, exclude=[], color=(0, 255, 255)):
"""Draw AOI polygons on frame."""
for name, aoi in self.items():
if name in exclude:
continue
aoi.draw(frame, color)
def raycast(self, pointer:tuple) -> Tuple[str, "AOIFeatures.AreaOfInterest", bool]:
"""Iterate over aoi to know which aoi is matching the given pointer position.
Returns:
aoi name
aoi object
matching status
"""
for name, aoi in self.items():
matching = aoi.contains_point(pointer)
yield name, aoi, matching
def draw_raycast(self, frame, pointer:tuple, exclude=[], base_color=(0, 0, 255), matching_color=(0, 255, 0)):
"""Draw AOIs with their matching status."""
for name, aoi, matching in self.raycast(pointer):
if name in exclude:
continue
color = matching_color if matching else base_color
if matching:
top_left_corner_pixel = numpy.rint(aoi.clockwise()[0]).astype(int)
cv.putText(frame, name, top_left_corner_pixel, cv.FONT_HERSHEY_SIMPLEX, 1, (255, 255, 255), 1, cv.LINE_AA)
# Draw form
aoi.draw(frame, color)
def circlecast(self, center:tuple, radius:float) -> Tuple[str, "AOIFeatures.AreaOfInterest", numpy.array, float, float]:
"""Iterate over areas to know which aoi is matching circle.
Returns:
aoi name
aoi object
matching region points
ratio of matching region area relatively to aoi area
ratio of matching region area relatively to circle area
"""
for name, aoi in self.items():
matching_region, aoi_ratio, circle_ratio = aoi.circle_intersection(center, radius)
yield name, aoi, matching_region, aoi_ratio, circle_ratio
def draw_circlecast(self, frame, center:tuple, radius:float, exclude=[], base_color=(0, 0, 255), matching_color=(0, 255, 0)):
"""Draw AOIs with their matching status and matching region."""
for name, aoi, matching_region, aoi_ratio, circle_ratio in self.circlecast(center, radius):
if name in exclude:
continue
# Draw matching region
if aoi_ratio > 0:
matching_region.draw(frame, base_color, 4)
# TODO : Externalise this criteria
matching = aoi_ratio > 0.25 or circle_ratio > 0.5
color = matching_color if matching else base_color
if matching:
top_left_corner_pixel = numpy.rint(aoi.clockwise()[0]).astype(int)
cv.putText(frame, name, top_left_corner_pixel, cv.FONT_HERSHEY_SIMPLEX, 1, (255, 255, 255), 1, cv.LINE_AA)
# Draw matching region
matching_region.draw(frame, matching_color, 4)
# Draw form
aoi.draw(frame, color)
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