id summary reporter owner description type status priority milestone component version severity resolution keywords cc 3129 Contour orientation GregersP chaitanya "Hi, When building and using contours I find it nice to have a knowledge of the uphill and downhill directions, eg. when placing labels one can place them facing up-hill, or simply deciding the up-hill direction when looking at a contour direction locally. Therefore I have made a little patch to my local version of contours.cpp, which I attach to this ticket. My solution beares evidence of the fact that I do most of my programming in other languages than C++, though - as far as I have been able to test - it should be correct. The idea behind the patch is simple: register if it is the left or the right side, which is the high side, and use this information to make the right side the ""high side"" (meaning a clockwise contour around a top) when ejecting the contours. As stated earlier I have not been able to produce errors in my tests of the code, though my patch has the assumption that a saddle would not be connected ""left - top"" + ""bottom - right"". It is stated in the comment explaining the algorithm that this might happen, though when reading through the code, I was not able to actually pinpoint the location of this type of connection." enhancement closed normal 1.7.0 Algorithms unspecified normal fixed contour warmerdam