Hi Curtis, Le 12/10/2012 17:49, Curtis Jensen a écrit : > Should I create a bug report in Jira?
Yes please. This will allow us to not forget this report and check what's going on. thanks, Luc > > -- > Curtis > > On Thu, Oct 11, 2012 at 2:32 PM, [email protected] <[email protected]> wrote: >> Those sound like problems with the precision of floating point arithmetic. >> >> Christian >> >> On Thu, Oct 11, 2012 at 2:27 PM, Curtis Jensen <[email protected]> >> wrote: >>> I originally saw this problem with the released 3.0 version. I got >>> the latest from subversion to see if the latest would behave >>> differently. >>> I think the problem has always been there. >>> >>> Thanks, >>> Curtis >>> >>> On Thu, Oct 11, 2012 at 2:16 PM, <[email protected]> wrote: >>>> The obvious question is, does it return the same thing under previous >>>> releases? >>>> ________________________________________ >>>> From: Curtis Jensen [[email protected]] >>>> Sent: 11 October 2012 21:52 >>>> To: [email protected] >>>> Subject: [math] >>>> >>>> Using the latest Apache math from the Subversion repository, I'm >>>> finding a case where polygon difference is returning incorrect >>>> results. Below is a test case of subtracting two polygons (Sorry, >>>> this is the simplest case that I could find that duplicates the >>>> problem). Attached are charts of the inputs, the results and inputs >>>> and results all together. >>>> >>>> There are three problems with the result. The first is that the first >>>> point of the first set of vertices is null (and the first point of the >>>> second set is also null). The second is that, even if the first null >>>> points are ignored, the returned polygon is not the correct result. >>>> The first and last points are way off, and the remaining points do not >>>> match the original polygon boundaries. Additionally, there are two >>>> holes that are returned in the results. This subtraction case should >>>> not have holes. >>>> >>>> Can someone verify that this is either a bug, or something I am doing >>>> incorrectly in my test case? >>>> >>>> Thanks, >>>> Curtis >>>> >>>> public void testComplexDifference() { >>>> Vector2D[][] vertices1 = new Vector2D[][] { >>>> new Vector2D[] { >>>> new Vector2D( 90.08714908223715, 38.370299337260235), >>>> new Vector2D( 90.08709517675004, 38.3702895991413), >>>> new Vector2D( 90.08401538704919, 38.368849330127944), >>>> new Vector2D( 90.08258210430711, 38.367634558585564), >>>> new Vector2D( 90.08251455106665, 38.36763409247078), >>>> new Vector2D( 90.08106599752608, 38.36761621664249), >>>> new Vector2D( 90.08249585300035, 38.36753627557965), >>>> new Vector2D( 90.09075743352184, 38.35914647644972), >>>> new Vector2D( 90.09099945896571, 38.35896264724079), >>>> new Vector2D( 90.09269383800086, 38.34595756121246), >>>> new Vector2D( 90.09638631543191, 38.3457988093121), >>>> new Vector2D( 90.09666417351019, 38.34523360999418), >>>> new Vector2D( 90.1297082145872, 38.337670454923625), >>>> new Vector2D( 90.12971687748956, 38.337669827794684), >>>> new Vector2D( 90.1240820219179, 38.34328502001131), >>>> new Vector2D( 90.13084259656404, 38.34017811765017), >>>> new Vector2D( 90.13378567942857, 38.33860579180606), >>>> new Vector2D( 90.13519557833206, 38.33621054663689), >>>> new Vector2D( 90.13545616732307, 38.33614965452864), >>>> new Vector2D( 90.13553111202748, 38.33613962818305), >>>> new Vector2D( 90.1356903436448, 38.33610227127048), >>>> new Vector2D( 90.13576283227428, 38.33609255422783), >>>> new Vector2D( 90.13595870833188, 38.33604606376991), >>>> new Vector2D( 90.1361556630693, 38.3360024198866), >>>> new Vector2D( 90.13622408795709, 38.335987048115726), >>>> new Vector2D( 90.13696189099994, 38.33581914328681), >>>> new Vector2D( 90.13746655304897, 38.33616706665265), >>>> new Vector2D( 90.13845973716064, 38.33650776167099), >>>> new Vector2D( 90.13950901827667, 38.3368469456463), >>>> new Vector2D( 90.14393814424852, 38.337591835857495), >>>> new Vector2D( 90.14483839716831, 38.337076122362475), >>>> new Vector2D( 90.14565474433601, 38.33769000964429), >>>> new Vector2D( 90.14569421179482, 38.3377117256905), >>>> new Vector2D( 90.14577067124333, 38.33770883625908), >>>> new Vector2D( 90.14600350631684, 38.337714326520995), >>>> new Vector2D( 90.14600355139731, 38.33771435193319), >>>> new Vector2D( 90.14600369112401, 38.33771443882085), >>>> new Vector2D( 90.14600382486884, 38.33771453466096), >>>> new Vector2D( 90.14600395205912, 38.33771463904344), >>>> new Vector2D( 90.14600407214999, 38.337714751520764), >>>> new Vector2D( 90.14600418462749, 38.337714871611695), >>>> new Vector2D( 90.14600422249327, 38.337714915811034), >>>> new Vector2D( 90.14867838361471, 38.34113888210675), >>>> new Vector2D( 90.14923750157374, 38.341582537502575), >>>> new Vector2D( 90.14877083250991, 38.34160685841391), >>>> new Vector2D( 90.14816667319519, 38.34244232585684), >>>> new Vector2D( 90.14797696744586, 38.34248455284745), >>>> new Vector2D( 90.14484318014337, 38.34385573215269), >>>> new Vector2D( 90.14477919958296, 38.3453797747614), >>>> new Vector2D( 90.14202393306448, 38.34464324839456), >>>> new Vector2D( 90.14198920640195, 38.344651155237216), >>>> new Vector2D( 90.14155207025175, 38.34486424263724), >>>> new Vector2D( 90.1415196143314, 38.344871730519), >>>> new Vector2D( 90.14128611910814, 38.34500196593859), >>>> new Vector2D( 90.14047850603913, 38.34600084496253), >>>> new Vector2D( 90.14045907000337, 38.34601860032171), >>>> new Vector2D( 90.14039496493928, 38.346223030432384), >>>> new Vector2D( 90.14037626063737, 38.346240203360026), >>>> new Vector2D( 90.14030005823724, 38.34646920000705), >>>> new Vector2D( 90.13799164754806, 38.34903093011013), >>>> new Vector2D( 90.11045289492762, 38.36801537312368), >>>> new Vector2D( 90.10871471476526, 38.36878044144294), >>>> new Vector2D( 90.10424901707671, 38.374300101757), >>>> new Vector2D( 90.10263482039932, 38.37310041316073), >>>> new Vector2D( 90.09834601753448, 38.373615053823414), >>>> new Vector2D( 90.0979455456843, 38.373578376172475), >>>> new Vector2D( 90.09086514328669, 38.37527884194668), >>>> new Vector2D( 90.09084931407364, 38.37590801712463), >>>> new Vector2D( 90.09081227075944, 38.37526295920463), >>>> new Vector2D( 90.09081378927135, 38.375193883266434) >>>> } >>>> }; >>>> PolygonsSet set1 = buildSet(vertices1); >>>> >>>> Vector2D[][] vertices2 = new Vector2D[][] { >>>> new Vector2D[] { >>>> new Vector2D( 90.13067558880044, 38.36977255037573), >>>> new Vector2D( 90.12907570488, 38.36817308242706), >>>> new Vector2D( 90.1342774136516, 38.356886880294724), >>>> new Vector2D( 90.13090330629757, 38.34664392676211), >>>> new Vector2D( 90.13078571364593, 38.344904617518466), >>>> new Vector2D( 90.1315602208914, 38.3447185040846), >>>> new Vector2D( 90.1316336226821, 38.34470643148342), >>>> new Vector2D( 90.134020944832, 38.340936644972885), >>>> new Vector2D( 90.13912536387306, 38.335497255122334), >>>> new Vector2D( 90.1396178806582, 38.334878075552126), >>>> new Vector2D( 90.14083049696671, 38.33316530644106), >>>> new Vector2D( 90.14145252901329, 38.33152722916191), >>>> new Vector2D( 90.1404779335565, 38.32863516047786), >>>> new Vector2D( 90.14282712131586, 38.327504432532066), >>>> new Vector2D( 90.14616669875488, 38.3237354115015), >>>> new Vector2D( 90.14860976050608, 38.315714862457924), >>>> new Vector2D( 90.14999277782437, 38.3164932507504), >>>> new Vector2D( 90.15005207194997, 38.316534677663356), >>>> new Vector2D( 90.15508513859612, 38.31878731691609), >>>> new Vector2D( 90.15919938519221, 38.31852743183782), >>>> new Vector2D( 90.16093758658837, 38.31880662005153), >>>> new Vector2D( 90.16099420184912, 38.318825953291594), >>>> new Vector2D( 90.1665411125756, 38.31859497874757), >>>> new Vector2D( 90.16999653861313, 38.32505772048029), >>>> new Vector2D( 90.17475243391698, 38.32594398441148), >>>> new Vector2D( 90.17940844844992, 38.327427213761325), >>>> new Vector2D( 90.20951909541378, 38.330616833491774), >>>> new Vector2D( 90.2155400467941, 38.331746223670336), >>>> new Vector2D( 90.21559881391778, 38.33175551425302), >>>> new Vector2D( 90.21916646426041, 38.332584299620805), >>>> new Vector2D( 90.23863749852285, 38.34778978875795), >>>> new Vector2D( 90.25459855175802, 38.357790570608984), >>>> new Vector2D( 90.25964298227257, 38.356918010203174), >>>> new Vector2D( 90.26024593994703, 38.361692743151366), >>>> new Vector2D( 90.26146187570015, 38.36311080550837), >>>> new Vector2D( 90.26614159359622, 38.36510808579902), >>>> new Vector2D( 90.26621342936448, 38.36507942500333), >>>> new Vector2D( 90.26652190211962, 38.36494042196722), >>>> new Vector2D( 90.26621240678867, 38.365113172030874), >>>> new Vector2D( 90.26614057102057, 38.365141832826794), >>>> new Vector2D( 90.26380080055299, 38.3660381760273), >>>> new Vector2D( 90.26315345241, 38.36670658276421), >>>> new Vector2D( 90.26251574942881, 38.367490323488084), >>>> new Vector2D( 90.26247873448426, 38.36755266444749), >>>> new Vector2D( 90.26234628016698, 38.36787989125406), >>>> new Vector2D( 90.26214559424784, 38.36945909356126), >>>> new Vector2D( 90.25861728442555, 38.37200753430875), >>>> new Vector2D( 90.23905557537864, 38.375405314295904), >>>> new Vector2D( 90.22517251874075, 38.38984691662256), >>>> new Vector2D( 90.22549955153215, 38.3911564273979), >>>> new Vector2D( 90.22434386063355, 38.391476432092134), >>>> new Vector2D( 90.22147729457276, 38.39134652252034), >>>> new Vector2D( 90.22142070120117, 38.391349167741964), >>>> new Vector2D( 90.20665060751588, 38.39475580900313), >>>> new Vector2D( 90.20042268367109, 38.39842558622888), >>>> new Vector2D( 90.17423771242085, 38.402727751805344), >>>> new Vector2D( 90.16756796257476, 38.40913898597597), >>>> new Vector2D( 90.16728283954308, 38.411255399912875), >>>> new Vector2D( 90.16703538220418, 38.41136059866693), >>>> new Vector2D( 90.16725865657685, 38.41013618805954), >>>> new Vector2D( 90.16746107640665, 38.40902614307544), >>>> new Vector2D( 90.16122795307462, 38.39773101873203) >>>> } >>>> }; >>>> PolygonsSet set2 = buildSet(vertices2); >>>> PolygonsSet set = (PolygonsSet) new >>>> RegionFactory<Euclidean2D>().difference(set1.copySelf(), >>>> >>>> set2.copySelf()); >>>> >>>> Vector2D[][] verticies = set.getVertices(); >>>> Assert.assertTrue(verticies[0][0] != null); >>>> Assert.assertEquals(1, verticies.length); >>>> } >>>> >>>> >>>> -- >>>> This e-mail and any attachments may contain confidential, copyright and or >>>> privileged material, and are for the use of the intended addressee only. >>>> If you are not the intended addressee or an authorised recipient of the >>>> addressee please notify us of receipt by returning the e-mail and do not >>>> use, copy, retain, distribute or disclose the information in or attached >>>> to the e-mail. >>>> Any opinions expressed within this e-mail are those of the individual and >>>> not necessarily of Diamond Light Source Ltd. >>>> Diamond Light Source Ltd. cannot guarantee that this e-mail or any >>>> attachments are free from viruses and we cannot accept liability for any >>>> damage which you may sustain as a result of software viruses which may be >>>> transmitted in or with the message. >>>> Diamond Light Source Limited (company no. 4375679). 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