68 lines
2.0 KiB
Python
68 lines
2.0 KiB
Python
# Constructs line equastions from a set of polar cords that represent a room
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# Invoke python mklines.py <filename>
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import csv
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import sys
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import math
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from os.path import exists as file_exists
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from basictypes import PointWithID, StraightLine, point_from_polar
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def main():
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filename = get_filename()
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if filename == -1: return -1
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if not file_exists(filename):
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perr('File does not exist')
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return -1
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points = read_csv(filename, remove_header=True)
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if not valid_data(points): # Assumes header is removed
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perr('Invalid or corrupt samples')
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return -1
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#for val in points: print(val.get_cartesian())
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lines = list()
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for i in range(0, len(points), 2):
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p1 = points[i]
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p2 = points[i+1]
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print('p1 ', p1.get_x(), p1.get_y())
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print('p2 ', p2.get_x(), p2.get_y())
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line = StraightLine(p1, p2)
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lines.append(line)
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print('line ', line.get_m(), line.get_b())
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intercepts = list()
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for i, line in enumerate(lines):
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if i == len(lines) - 1: break # Last line is a special case
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p = lines[i].intercept(lines[i+1])
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print(p.get_x(), p.get_y())
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return 0
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def read_csv(filename: str, remove_header=False) -> list[PointWithID]:
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tmp_data = list() # New list of points (PointWithID)
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with open(filename, 'r') as csv_file:
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reader = csv.reader(csv_file)
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for i, row in enumerate(reader):
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if remove_header and i == 0: continue # Skip header
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# Assumes wall_id,r,theta
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point_tmp = point_from_polar(float(row[1]), float(row[2]), row[0])
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tmp_data.append(point_tmp)
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return tmp_data
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def valid_data(samples:list) -> bool:
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# Check if we have an even number of samples
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return len(samples) % 2 == 0
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def get_filename() -> str:
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try:
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filename = sys.argv[1]
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return filename
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except IndexError:
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perr('Provide target file name')
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return -1
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def perr(*args):
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print(*args, file=sys.stderr)
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if __name__ == '__main__':
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exit(main()) |