#! /usr/bin/env python
"""
This script tests the SICK laser range sensor in MORSE.
"""
import sys
import math
from morse.testing.testing import MorseTestCase
from pymorse import Morse
# Include this import to be able to use your test file as a regular
# builder script, ie, usable with: 'morse [run|exec] base_testing.py
try:
from morse.builder import *
except ImportError:
pass
[docs]class Sick_Test(MorseTestCase):
[docs] def setUpEnv(self):
""" Defines the test scenario, using the Builder API.
"""
robot = ATRV()
robot.rotate(z = math.pi)
robot.translate(x = -4.5)
sick = Sick('Sick')
sick.translate(z=0.9)
sick.properties(laser_range = 10.0, Visible_arc = False)
sick.create_laser_arc()
robot.append(sick)
sick.add_stream('socket')
env = Environment('indoors-1/boxes', fastmode = True)
env.add_service('socket')
[docs] def test_sick(self):
""" This test is guaranteed to be started only when the simulator
is ready.
"""
with Morse() as morse:
# Read the data from the sick sensor
self.sick_stream = morse.robot.Sick
sick = self.sick_stream.get()
# On the right of the sensor, nothing to hit. So position is
# (0.0, 0.0, 0.0) and distance == laser_range
for index in range(105, 180):
ray = sick['point_list'][index]
self.assertAlmostEqual(ray[0], 0.0)
self.assertAlmostEqual(ray[1], 0.0)
self.assertAlmostEqual(ray[2], 0.0)
length = sick['range_list'][index]
self.assertAlmostEqual(length, 10.0)
# In the center of the sensor, we hit the red block (situed
# near (-7, 0)).
# Distance to hit is near 2.5
for index in range(80, 100):
length = sick['range_list'][index]
self.assertAlmostEqual(length, 2.5, delta=0.05)
# Check some specific point. Hit 90 is the ray corresponding
# to angle math.pi/2 (in front of the robot). y is computed
# by trigonometry.
ray = sick['point_list'][90]
self.assertAlmostEqual(ray[0], 2.5, delta=0.05)
self.assertAlmostEqual(ray[1], 0.0, delta=0.05)
self.assertAlmostEqual(ray[2], 0.0, delta=0.05)
ray = sick['point_list'][85]
self.assertAlmostEqual(ray[0], 2.5, delta=0.05)
self.assertAlmostEqual(ray[1], -2.5 * math.tan(math.radians(5)),
delta=0.05)
self.assertAlmostEqual(ray[2], 0.0, delta=0.05)
ray = sick['point_list'][95]
self.assertAlmostEqual(ray[0], 2.5, delta=0.05)
self.assertAlmostEqual(ray[1], -2.5 * math.tan(math.radians(-5)),
delta=0.05)
self.assertAlmostEqual(ray[2], 0.0, delta=0.05)
# Then, there is a full empty sector
for index in range(105, 150):
ray = sick['point_list'][index]
self.assertAlmostEqual(ray[0], 0.0)
self.assertAlmostEqual(ray[1], 0.0)
self.assertAlmostEqual(ray[2], 0.0)
length = sick['range_list'][index]
self.assertAlmostEqual(length, 10.0)
# The last ray hit the green block
# Distance and real position are a bit complicated to
# compute manually, so don't check real precision. Just
# verify that the distance is near 5.8
#print([i for i,r in enumerate(sick['range_list']) if 5<r<6])
for index in range(16, 22):
length = sick['range_list'][index]
self.assertAlmostEqual(length, 5.8, delta=0.15)
########################## Run these tests ##########################
if __name__ == "__main__":
from morse.testing.testing import main
main(Sick_Test)
