Resolve a performance problem in rendering selections
Resolve a performance problem in rendering selections

We were iterating over all points in the graph when
updating a selection (in the "clear previous selection"
phase), instead of just visiting the selected ones and
updating those.

aeg-aeg/pcpfans,mbaldessari/pcp,adfernandes/pcp,wuliming/pcp,tjanez/pcp,wuliming/pcp,mbaldessari/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,andyvand/cygpcpfans,aeg-aeg/pcpfans,aeg-aeg/pcpfans,aeg-aeg/pcpfans,andyvand/cygpcpfans,prasincs/pcp,adfernandes/pcp,edwardt/pcp,prasincs/pcp,andyvand/cygpcpfans,tjanez/pcp,adfernandes/pcp,andyvand/cygpcpfans,edwardt/pcp,adfernandes/pcp,andyvand/cygpcpfans,mbaldessari/pcp,tjanez/pcp,mbaldessari/pcp,tjanez/pcp,wuliming/pcp,tjanez/pcp,tjanez/pcp,prasincs/pcp,wuliming/pcp,wuliming/pcp,wuliming/pcp,andyvand/cygpcpfans,prasincs/pcp,edwardt/pcp,mbaldessari/pcp,edwardt/pcp,adfernandes/pcp,prasincs/pcp,edwardt/pcp,wuliming/pcp,prasincs/pcp,prasincs/pcp,adfernandes/pcp,mbaldessari/pcp,adfernandes/pcp,adfernandes/pcp,aeg-aeg/pcpfans,aeg-aeg/pcpfans,aeg-aeg/pcpfans,prasincs/pcp,edwardt/pcp,wuliming/pcp,edwardt/pcp,aeg-aeg/pcpfans,tjanez/pcp,tjanez/pcp,edwardt/pcp