Opened 5 years ago
Last modified 5 years ago
#13444 assigned Bugs
boost::geometry::buffer returns only partial result (regression over 1.63.0)
| Reported by: | Owned by: | Barend Gehrels | |
|---|---|---|---|
| Milestone: | To Be Determined | Component: | geometry |
| Version: | Boost 1.66.0 | Severity: | Problem |
| Keywords: | Cc: |
Description
using boost::geometry::buffer with multilinestring, only 1 of expected 3 polygons are returned.
The fix ist to buffer each linestring separately and union_ them into one multipolygon. This also turned out to be much faster.
I do not have a simple example, but a rather complex one, which I will attach.
Version 1.63.0 returned all 3 polygons, but was also rather slow when compared with the workaround.
Change History (9)
comment:1 by , 5 years ago
comment:2 by , 5 years ago
Thanks for the ticket. Could you maybe increase precision on the WKT? Glancing the values, it is not enough (6,73675e+006 all the time). But if it is enough, than it is fine.
comment:3 by , 5 years ago
No, that is definitely not enough, sorry. I'll look into how to adjust precision and will upload again. The process of obtaining these values is rather tedious, though, so it may take some time.
comment:4 by , 5 years ago
How about the following?
std::cout << std::fixed << std::setprecision(20) << boost::geometry::wkt(geometry) << std::endl;
comment:5 by , 5 years ago
Thanks for the hint Adam. Please also take care to use "." as decimal separator, instead of the "," in the current sample - because "," is also used to separate the points.
comment:6 by , 5 years ago
Ok, here we go... "C"-locale still uses comma, though. Had to replace it by regexp... Attaching a file to the bug still does not work.
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comment:7 by , 5 years ago
That precision looks sufficient ;-) Thanks, hope to be able to look today at this.
comment:8 by , 5 years ago
| Status: | new → assigned |
|---|
comment:9 by , 5 years ago
I can reproduce it, thanks for the testcase.
What buffer-distance do you use? I tried 1, 2 and 3 and can reproduce it with 1.
It can be solved (for me) by specifying the define BOOST_GEOMETRY_NO_ROBUSTNESS which internally avoids rescaling.
We are trying to remove rescaling in one of the future releases.
Alternatively, or in combination with this, you can also try to simplify the input before.
But apparently you have already a workaround (which works because it uses different scaling for each of the linestrings).
Thanks again for the ticket, it is included in our testsuite
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Input: MULTILINESTRING((-14900,4 6,73675e+006,-14903,4 6,73675e+006,-14906,6 6,73675e+006,-14906,6 6,73675e+006,-14906,6 6,73675e+006,-14906,6 6,73675e+006,-14906,6 6,73675e+006,-14906,6 6,73675e+006,-14906,3 6,73675e+006,-14906,3 6,73675e+006,-14922,6 6,73676e+006,-14943,1 6,73677e+006,-14943,1 6,73677e+006,-14943,1 6,73677e+006,-14943,1 6,73677e+006,-14943,1 6,73677e+006,-14943,1 6,73677e+006,-14943,5 6,73677e+006,-14943,5 6,73677e+006,-14977,8 6,73678e+006,-14978,2 6,73678e+006,-14978,2 6,73678e+006,-14978,2 6,73678e+006,-14978,2 6,73678e+006,-14978,2 6,73678e+006,-14978,2 6,73678e+006,-14978,2 6,73678e+006,-15011,9 6,73681e+006,-15011,5 6,73681e+006,-15044,5 6,73683e+006,-15044,6 6,73683e+006,-15044,6 6,73683e+006,-15044,6 6,73683e+006,-15044,6 6,73683e+006,-15044,6 6,73683e+006,-15044,6 6,73683e+006,-15044,6 6,73683e+006,-15059,4 6,73683e+006,-15068,1 6,73684e+006,-15069,5 6,73684e+006,-15071 6,73684e+006,-15087,9 6,73685e+006,-15089,5 6,73685e+006,-15091,2 6,73685e+006,-15094,2 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6,73696e+006,-15689,5 6,73696e+006,-15695,9 6,73696e+006,-15697,5 6,73696e+006,-15703,9 6,73696e+006),(-15024,3 6,73674e+006,-15043,4 6,73674e+006,-15098,6 6,73675e+006,-15109,7 6,73675e+006,-15114,2 6,73675e+006,-15209 6,73677e+006,-15329,1 6,73679e+006,-15330,7 6,73679e+006,-15351,3 6,7368e+006,-15398,9 6,7368e+006,-15419,6 6,73681e+006,-15424,2 6,73681e+006,-15445,5 6,73681e+006))
Output bounds for MultiLineString: MULTIPOLYGON(((-15329,5 6,73679e+006,-15329,5 6,73679e+006,-15331 6,73679e+006,-15419,9 6,7368e+006,-15420 6,7368e+006,-15424,6 6,73681e+006,-15424,7 6,73681e+006,-15446 6,73681e+006,-15445,1 6,73681e+006,-15423,7 6,73681e+006,-15419,2 6,73681e+006,-15330,3 6,73679e+006,-15330,3 6,73679e+006,-15328,7 6,73679e+006,-15328,7 6,73679e+006,-15113,9 6,73675e+006,-15109,4 6,73675e+006,-15098,4 6,73675e+006,-15043,2 6,73674e+006,-15024,2 6,73674e+006,-15024,5 6,73674e+006,-15043,5 6,73674e+006,-15043,6 6,73674e+006,-15098,8 6,73675e+006,-15098,9 6,73675e+006,-15110 6,73675e+006,-15110 6,73675e+006,-15114,6 6,73675e+006,-15114,6 6,73675e+006,-15329,5 6,73679e+006)))
Output union_ over all bounds for each LineString: MULTIPOLYGON(((-15329,5 6,73679e+006,-15331 6,73679e+006,-15419,9 6,7368e+006,-15420 6,7368e+006,-15424,6 6,73681e+006,-15424,7 6,73681e+006,-15446 6,73681e+006,-15445,1 6,73681e+006,-15423,7 6,73681e+006,-15419,2 6,73681e+006,-15330,3 6,73679e+006,-15330,3 6,73679e+006,-15328,7 6,73679e+006,-15328,7 6,73679e+006,-15113,9 6,73675e+006,-15109,4 6,73675e+006,-15098,4 6,73675e+006,-15043,2 6,73674e+006,-15024,2 6,73674e+006,-15024,5 6,73674e+006,-15043,5 6,73674e+006,-15043,6 6,73674e+006,-15098,8 6,73675e+006,-15098,9 6,73675e+006,-15110 6,73675e+006,-15110 6,73675e+006,-15114,6 6,73675e+006,-15114,6 6,73675e+006,-15329,5 6,73679e+006)),((-15190,4 6,73683e+006,-15190,4 6,73683e+006,-15222,4 6,73684e+006,-15222,4 6,73684e+006,-15268,7 6,73685e+006,-15268,8 6,73685e+006,-15301,3 6,73685e+006,-15301,4 6,73685e+006,-15302,9 6,73685e+006,-15303 6,73685e+006,-15394,1 6,73688e+006,-15394,1 6,73688e+006,-15455,5 6,7369e+006,-15454,3 6,7369e+006,-15393 6,73689e+006,-15301,8 6,73686e+006,-15300,3 6,73686e+006,-15267,9 6,73685e+006,-15247 6,73685e+006,-15387,7 6,73689e+006,-15387,7 6,73689e+006,-15541,7 6,73693e+006,-15541,7 6,73693e+006,-15680,7 6,73698e+006,-15680,7 6,73698e+006,-15696,2 6,73698e+006,-15696,3 6,73698e+006,-15697,7 6,73698e+006,-15697,7 6,73698e+006,-15719,8 6,73699e+006,-15719,9 6,73699e+006,-15721,4 6,73699e+006,-15721,5 6,73699e+006,-15727,2 6,73699e+006,-15725,6 6,737e+006,-15719,9 6,73699e+006,-15718,4 6,73699e+006,-15696,4 6,73699e+006,-15695 6,73698e+006,-15679,6 6,73698e+006,-15679,6 6,73698e+006,-15540,6 6,73694e+006,-15386,6 6,73689e+006,-15234 6,73685e+006,-15221,6 6,73684e+006,-15189,6 6,73683e+006,-15168,8 6,73683e+006,-15177,7 6,73683e+006,-15177,8 6,73683e+006,-15267 6,73686e+006,-15267 6,73686e+006,-15416,6 6,7369e+006,-15416,6 6,7369e+006,-15480,9 6,73692e+006,-15480,9 6,73692e+006,-15677,4 6,73698e+006,-15677,4 6,73698e+006,-15706,6 6,73699e+006,-15706,7 6,73699e+006,-15723,3 6,737e+006,-15723,4 6,737e+006,-15730,7 6,737e+006,-15729,1 6,737e+006,-15721,9 6,737e+006,-15705,4 6,73699e+006,-15676,3 6,73699e+006,-15676,3 6,73699e+006,-15479,8 6,73693e+006,-15479,8 6,73693e+006,-15415,5 6,73691e+006,-15415,5 6,73691e+006,-15265,9 6,73686e+006,-15176,6 6,73684e+006,-15135,9 6,73682e+006,-15111,2 6,73682e+006,-15111,2 6,73682e+006,-15103,6 6,73682e+006,-15098,4 6,73682e+006,-15094,1 6,73682e+006,-15122,1 6,73682e+006,-15293 6,73688e+006,-15353,1 6,73689e+006,-15352 6,7369e+006,-15291,9 6,73688e+006,-15291,9 6,73688e+006,-15120,9 6,73683e+006,-15120,9 6,73683e+006,-15090,1 6,73682e+006,-15090,1 6,73682e+006,-15058,6 6,73681e+006,-15058,6 6,73681e+006,-15030,6 6,7368e+006,-15030,5 6,7368e+006,-15030,1 6,7368e+006,-15030,1 6,7368e+006,-15011,4 6,73679e+006,-15012,9 6,73679e+006,-15012,9 6,73679e+006,-15013,4 6,73679e+006,-15022,5 6,7368e+006,-15028,5 6,7368e+006,-15043,5 6,73681e+006,-15074,6 6,73682e+006,-15276 6,73688e+006,-15274,8 6,73688e+006,-15073,4 6,73682e+006,-15073,4 6,73682e+006,-15049,9 6,73681e+006,-15059,1 6,73682e+006,-15082,1 6,73683e+006,-15100,3 6,73683e+006,-15252,7 6,73688e+006,-15252,7 6,73688e+006,-15500,6 6,73695e+006,-15500,6 6,73695e+006,-15576 6,73698e+006,-15576 6,73698e+006,-15731,2 6,73702e+006,-15734,3 6,73702e+006,-15737,4 6,73702e+006,-15740,5 6,73702e+006,-15739,7 6,73703e+006,-15736,6 6,73703e+006,-15736,5 6,73703e+006,-15733,3 6,73703e+006,-15733,2 6,73703e+006,-15730,1 6,73703e+006,-15730,1 6,73703e+006,-15574,8 6,73698e+006,-15499,5 6,73696e+006,-15251,5 6,73688e+006,-15251,5 6,73688e+006,-15099,1 6,73684e+006,-15099 6,73684e+006,-15080,8 6,73683e+006,-15080,7 6,73683e+006,-15057,6 6,73682e+006,-15057,4 6,73682e+006,-15040,6 6,73681e+006,-15040,5 6,73681e+006,-15011,5 6,7368e+006,-15011,1 6,7368e+006,-14995,2 6,73679e+006,-14980,3 6,73678e+006,-15012,6 6,7368e+006,-15025,6 6,73681e+006,-15031,6 6,73681e+006,-15042,2 6,73682e+006,-15049,7 6,73682e+006,-15051,2 6,73682e+006,-15085,6 6,73684e+006,-15087,1 6,73684e+006,-15085,8 6,73684e+006,-15084,3 6,73684e+006,-15084,3 6,73684e+006,-15049,8 6,73683e+006,-15049,7 6,73683e+006,-15048,2 6,73683e+006,-15048,2 6,73683e+006,-15047,8 6,73683e+006,-15069 6,73684e+006,-15070,4 6,73684e+006,-15071,7 6,73684e+006,-15088,6 6,73685e+006,-15091,8 6,73685e+006,-15336,5 6,73692e+006,-15335,3 6,73692e+006,-15090,6 6,73685e+006,-15090,5 6,73685e+006,-15087,3 6,73685e+006,-15087,2 6,73685e+006,-15078,5 6,73685e+006,-15079,1 6,73685e+006,-15098,3 6,73686e+006,-15107,3 6,73686e+006,-15126,4 6,73686e+006,-15128 6,73686e+006,-15215,8 6,73689e+006,-15215,8 6,73689e+006,-15218,9 6,73689e+006,-15218,9 6,73689e+006,-15462,3 6,73696e+006,-15462,3 6,73696e+006,-15574,7 6,737e+006,-15711,1 6,73704e+006,-15712,6 6,73704e+006,-15742,5 6,73705e+006,-15744 6,73705e+006,-15748,8 6,73705e+006,-15748,5 6,73705e+006,-15743,7 6,73705e+006,-15743,6 6,73705e+006,-15741,9 6,73705e+006,-15741,7 6,73705e+006,-15711,6 6,73704e+006,-15711,6 6,73704e+006,-15710 6,73704e+006,-15710 6,73704e+006,-15573,6 6,737e+006,-15573,6 6,737e+006,-15461,2 6,73697e+006,-15217,8 6,7369e+006,-15214,7 6,73689e+006,-15126,8 6,73687e+006,-15126,8 6,73687e+006,-15125,2 6,73687e+006,-15125,2 6,73687e+006,-15120,6 6,73687e+006,-15131,1 6,73687e+006,-15135,4 6,73687e+006,-15147,5 6,73688e+006,-15195 6,73689e+006,-15196,6 6,73689e+006,-15195,4 6,7369e+006,-15193,9 6,7369e+006,-15193,8 6,7369e+006,-15146,3 6,73688e+006,-15146,2 6,73688e+006,-15134,1 6,73688e+006,-15134 6,73688e+006,-15129,6 6,73688e+006,-15129,4 6,73688e+006,-15089,4 6,73686e+006,-15089,3 6,73686e+006,-15086,4 6,73685e+006,-15086,3 6,73685e+006,-15077,2 6,73685e+006,-15077,1 6,73685e+006,-15077,1 6,73685e+006,-15077,1 6,73685e+006,-15077 6,73685e+006,-15077 6,73685e+006,-15076 6,73685e+006,-15076 6,73685e+006,-15043,6 6,73683e+006,-15043,6 6,73683e+006,-15012 6,73681e+006,-15023,9 6,73682e+006,-15061 6,73685e+006,-15063,5 6,73685e+006,-15071,5 6,73686e+006,-15088,1 6,73686e+006,-15089,5 6,73687e+006,-15096,7 6,73687e+006,-15116,9 6,73688e+006,-15124,4 6,73688e+006,-15135,1 6,73688e+006,-15181,3 6,7369e+006,-15180,2 6,7369e+006,-15134 6,73689e+006,-15133,9 6,73689e+006,-15123,2 6,73688e+006,-15123,2 6,73688e+006,-15115,6 6,73688e+006,-15115,5 6,73688e+006,-15095,2 6,73687e+006,-15095,1 6,73687e+006,-15087,8 6,73687e+006,-15087,7 6,73687e+006,-15086,3 6,73687e+006,-15086,2 6,73687e+006,-15069,5 6,73686e+006,-15069,4 6,73686e+006,-15061,3 6,73685e+006,-15061,2 6,73685e+006,-15058,6 6,73685e+006,-15058,5 6,73685e+006,-15021,4 6,73682e+006,-15021,3 6,73682e+006,-14997 6,7368e+006,-14991,2 6,7368e+006,-14985,6 6,73679e+006,-14982,5 6,73679e+006,-14977,1 6,73679e+006,-14976,9 6,73679e+006,-14961,7 6,73678e+006,-14942,8 6,73677e+006,-14942,6 6,73677e+006,-14942,5 6,73677e+006,-14937,7 6,73677e+006,-14933,5 6,73676e+006,-14922 6,73676e+006,-14905,8 6,73676e+006,-14905,8 6,73676e+006,-14903 6,73676e+006,-14903 6,73676e+006,-14899,9 6,73675e+006,-14900,8 6,73675e+006,-14903,9 6,73675e+006,-14907 6,73675e+006,-14907,1 6,73675e+006,-14923,1 6,73676e+006,-14923,2 6,73676e+006,-14923,8 6,73676e+006,-14943,8 6,73676e+006,-14943,9 6,73676e+006,-14944,1 6,73676e+006,-14944,4 6,73676e+006,-14944,5 6,73676e+006,-14952 6,73677e+006,-14981,2 6,73678e+006,-15022,3 6,73679e+006,-15031,4 6,7368e+006,-15031,6 6,7368e+006,-15031,7 6,7368e+006,-15078,4 6,73681e+006,-15099,8 6,73681e+006,-15112,9 6,73682e+006,-15190,4 6,73683e+006)),((-15318,7 6,73684e+006,-15104,8 6,7368e+006,-15104,8 6,7368e+006,-15103,7 6,7368e+006,-15101,7 6,7368e+006,-15101,6 6,7368e+006,-15098,5 6,73679e+006,-15098,5 6,73679e+006,-15035,5 6,73678e+006,-15036,2 6,73678e+006,-15064,2 6,73678e+006,-14997,6 6,73676e+006,-14997 6,73676e+006,-14996,5 6,73676e+006,-14996,3 6,73676e+006,-14996,4 6,73676e+006,-14996,7 6,73676e+006,-14997,3 6,73676e+006,-14998 6,73676e+006,-14998,7 6,73676e+006,-14999,4 6,73676e+006,-14999,4 6,73676e+006,-15075,1 6,73678e+006,-15102,1 6,73679e+006,-15102,5 6,73679e+006,-15104,4 6,73679e+006,-15330,2 6,73684e+006,-15330,3 6,73684e+006,-15347,5 6,73684e+006,-15347,6 6,73684e+006,-15352,2 6,73684e+006,-15352,3 6,73684e+006,-15372,1 6,73685e+006,-15372,2 6,73685e+006,-15381,3 6,73685e+006,-15381,4 6,73685e+006,-15415,9 6,73687e+006,-15415,9 6,73687e+006,-15444,1 6,73689e+006,-15455,6 6,73689e+006,-15456,6 6,73689e+006,-15459,9 6,73689e+006,-15487,4 6,7369e+006,-15543,9 6,73692e+006,-15670,9 6,73696e+006,-15675,5 6,73696e+006,-15696,2 6,73696e+006,-15704,2 6,73696e+006,-15703,7 6,73697e+006,-15695,6 6,73696e+006,-15695,5 6,73696e+006,-15674,7 6,73696e+006,-15674,7 6,73696e+006,-15670 6,73696e+006,-15669,9 6,73696e+006,-15569,5 6,73693e+006,-15568,6 6,73693e+006,-15542,5 6,73692e+006,-15486,2 6,73691e+006,-15486,1 6,73691e+006,-15458,5 6,7369e+006,-15458,4 6,7369e+006,-15454 6,73689e+006,-15454 6,73689e+006,-15442,4 6,73689e+006,-15442,3 6,73689e+006,-15414,1 6,73687e+006,-15379,6 6,73686e+006,-15370,7 6,73685e+006,-15361,9 6,73685e+006,-15351,1 6,73685e+006,-15349,1 6,73685e+006,-15346,6 6,73685e+006,-15338,7 6,73684e+006,-15329,4 6,73684e+006,-15318,7 6,73684e+006)))