5 Commits

Author	SHA1	Message	Date
Andreas Fabri	93712c46cd	Add recenter and improve help	2010-09-23 14:42:13 +00:00
Andreas Fabri	20e83656cf	cleanup and use of CrossCursor only in the GraphicsView	2010-09-23 12:22:24 +00:00
Andreas Fabri	b8db07094a	Draw points with line width 0, otherwise it is too slow when we have 1mio points	2010-09-23 09:25:29 +00:00
Andreas Fabri	ef0c072342	Switch to PointsGraphicsItem that uses a kd-tree to quickly determine what points to redraw	2010-09-23 07:52:12 +00:00
Andreas Fabri	086ce1423f	First version of a Qt4 based 2D spatial searching demo	2010-09-22 14:31:13 +00:00