Home  Trees  Index  Help 


Package wx ::
Package lib ::
Package floatcanvas ::
Module FloatCanvas ::
Class PointSet


ColorOnlyMixin
+ DrawObject
+ PointsObjectMixin
+  PointSet
The PointSet class takes a list of 2tuples, or a NX2 NumPy array of point coordinates.
If Points is a sequence of tuples: Points[N][0] is the xcoordinate of point N and Points[N][1] is the ycoordinate.
If Points is a NumPy array: Points[N,0] is the xcoordinate of point N and Points[N,1] is the ycoordinate for arrays.
Each point will be drawn the same color and Diameter. The Diameter is in screen pixels, not world coordinates.
The hittest code does not distingish between the points, you will only know that one of the points got hit, not which one. You can use PointSet.FindClosestPoint(WorldPoint) to find out which one
In the case of points, the HitLineWidth is used as diameter.
Method Summary  

__init__(self,
Points,
Color,
Diameter,
InForeground)
 
DrawD2(self,
dc,
Points)
 
Returns the index of the closest point to the point, XY, given in World coordinates.  
SetDiameter(self,
Diameter)

Class Variable Summary 

Method Details 

FindClosestPoint(self, XY)Returns the index of the closest point to the point, XY, given in World coordinates. It's essentially random which you get if there are more than one that are the same. This can be used to figure out which point got hit in a mouse binding callback, for instance. It's a lot faster that using a lot of separate points. 
Home  Trees  Index  Help 


Generated by Epydoc 2.1.20050511.rpd on Mon Feb 16 12:54:40 2009  http://epydoc.sf.net 