openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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import numpy as np
class Conversions:
#Speed
MPH_TO_KPH = 1.609344
KPH_TO_MPH = 1. / MPH_TO_KPH
MS_TO_KPH = 3.6
KPH_TO_MS = 1. / MS_TO_KPH
MS_TO_MPH = MS_TO_KPH * KPH_TO_MPH
MPH_TO_MS = MPH_TO_KPH * KPH_TO_MS
MS_TO_KNOTS = 1.9438
KNOTS_TO_MS = 1. / MS_TO_KNOTS
#Angle
DEG_TO_RAD = np.pi/180.
RAD_TO_DEG = 1. / DEG_TO_RAD
#Mass
LB_TO_KG = 0.453592
RADAR_TO_CENTER = 2.7 # RADAR is ~ 2.7m ahead from center of car
class UIParams:
lidar_x, lidar_y, lidar_zoom = 384, 960, 6
lidar_car_x, lidar_car_y = lidar_x/2., lidar_y/1.1
car_hwidth = 1.7272/2 * lidar_zoom
car_front = 2.6924 * lidar_zoom
car_back = 1.8796 * lidar_zoom
car_color = 110