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comparison python/moving.py @ 531:f012a8ad7a0e

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corrected bug in Point.timeToCollision that might result in negative TTCs
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Fri, 27 Jun 2014 17:32:11 -0400
parents 37830a831818
children a3add9f751ef 6c0923f1ce68
comparison
equal deleted inserted replaced
530:d6445cbe7791 531:f012a8ad7a0e
288 deltaRoot = sqrt(delta) 288 deltaRoot = sqrt(delta)
289 ttc1 = (-b + deltaRoot)/(2*a) 289 ttc1 = (-b + deltaRoot)/(2*a)
290 ttc2 = (-b - deltaRoot)/(2*a) 290 ttc2 = (-b - deltaRoot)/(2*a)
291 if ttc1 >= 0 and ttc2 >= 0: 291 if ttc1 >= 0 and ttc2 >= 0:
292 ttc = min(ttc1,ttc2) 292 ttc = min(ttc1,ttc2)
293 else: 293 elif ttc1 >= 0:
294 if ttc1 < 0: 294 ttc = ttc1
295 ttc = ttc2 295 elif ttc2 >= 0:
296 elif ttc2 < 0: 296 ttc = ttc2
297 ttc = ttc1 297 else: # ttc1 < 0 and ttc2 < 0:
298 else: # ttc1 < 0 and ttc2 < 0: 298 ttc = None
299 ttc = None
300 else: 299 else:
301 ttc = None 300 ttc = None
302 return ttc 301 return ttc
303 302
304 303