improve polyline_collection rendering: -single draw call -add colored draw modes

7 jobs for PolyLineCollection in 51 minutes and 12 seconds
Status Job ID Name Coverage
  Test
passed clang-c++11-Qt5 #19137
Linux MultiThreads

00:08:35

passed cppcheck #19138
Linux MultiThreads

00:39:25

passed gcc-c++11-Qt5 #19136
Linux

00:04:00

passed Mac-Cpp11 #19142
Apple

00:51:10

passed VS2013-Qt-5.5.1-x64 #19141
VS2013 Qt551

00:15:22

passed VS2015-Qt-5.6.0-x32 #19140
VS2015 Qt56

00:21:19

passed VS2015-Qt-5.6.0-x64 #19139
VS2015 Qt56

00:17:43