def __init__(self,
ax,
on_move=None,
on_release=None,
on_enter=None,
maxdist=10,
line_props=None):
super(LineTool, self).__init__(ax,
on_move=on_move,
on_enter=on_enter,
on_release=on_release)
props = dict(color='r', linewidth=1, alpha=0.4, solid_capstyle='butt')
props.update(line_props if line_props is not None else {})
self.linewidth = props['linewidth']
self.maxdist = maxdist
self._active_pt = None
x = (0, 0)
y = (0, 0)
self._end_pts = np.transpose([x, y])
self._line = lines.Line2D(x, y, visible=False, animated=True, **props)
ax.add_line(self._line)
self._handles = ToolHandles(ax, x, y)
self._handles.set_visible(False)
self._artists = [self._line, self._handles.artist]
if on_enter is None:
def on_enter(pts):
x, y = np.transpose(pts)
print "length = %0.2f" % np.sqrt(np.diff(x)**2 + np.diff(y)**2)
self.callback_on_enter = on_enter
self.connect_event('button_press_event', self.on_mouse_press)
self.connect_event('button_release_event', self.on_mouse_release)
self.connect_event('motion_notify_event', self.on_move)
