1 # Copyright (C) 2010-2012 W. Trevor King <wking@tremily.us>
3 # This file is part of Hooke.
5 # Hooke is free software: you can redistribute it and/or modify it under the
6 # terms of the GNU Lesser General Public License as published by the Free
7 # Software Foundation, either version 3 of the License, or (at your option) any
10 # Hooke is distributed in the hope that it will be useful, but WITHOUT ANY
11 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
12 # A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
15 # You should have received a copy of the GNU Lesser General Public License
16 # along with Hooke. If not, see <http://www.gnu.org/licenses/>.
18 from numpy import arange
23 class ClickedPoint(object):
24 """Defines a clicked point from a curve plot.
28 self.is_marker=None #boolean ; decides if it is a marker
29 self.is_line_edge=None #boolean ; decides if it is the edge of a line (unused)
30 self.absolute_coords=(None,None) #(float,float) ; the absolute coordinates of the clicked point on the graph
31 self.graph_coords=(None,None) #(float,float) ; the coordinates of the plot that are nearest in X to the clicked point
32 self.index=None #integer ; the index of the clicked point with respect to the vector selected
33 self.dest=None #0 or 1 ; 0=top plot 1=bottom plot
35 def find_graph_coords(self,xvector,yvector):
36 """Find the point in the dataset that is closest to `self`.
38 Given a clicked point on the plot, finds the nearest point in
39 the dataset (in X) that corresponds to the clicked point.
42 for index in arange(1,len(xvector),1):
43 dists.append(((self.absolute_coords[0]-xvector[index])**2)+((self.absolute_coords[1]-yvector[index])**2))
45 self.index=dists.index(min(dists))
46 self.graph_coords=(xvector[self.index],yvector[self.index])
49 def measure_N_points(hooke_frame, N, message='', block=0):
51 General helper function for N-points measurements
52 By default, measurements are done on the retraction
55 dialog = wx.MessageDialog(None, message, 'Info', wx.OK)
58 figure = self.GetActiveFigure()
60 xvector = self.displayed_plot.curves[block].x
61 yvector = self.displayed_plot.curves[block].y
63 clicked_points = figure.ginput(N, timeout=-1, show_clicks=True)
66 for clicked_point in clicked_points:
67 point = lib.clickedpoint.ClickedPoint()
68 point.absolute_coords = clicked_point[0], clicked_point[1]
70 #TODO: make this optional?
71 #so far, the clicked point is taken, not the corresponding data point
72 point.find_graph_coords(xvector, yvector)
73 point.is_line_edge = True
74 point.is_marker = True