Well, I take one thing back: There was a text object at the point
(30,10) -- a text object that was updated with mouse x,y coords every
time a <Button-1> event fired. When without that text object,
find_closest() works well. With it, find_closest gets confused again.
It should be possible, I hope, to work around this issue by means of
tags for the text objects. But I'm curious: why is this happening?
Here's the code, with updated output:
[code="seems like it oughta work"]
def display(self):
self.mainw = Tk()
self.mainw.f = Frame(self.mainw)
self.mainw.f.c = Canvas(self.mainw.f,width=400,height=400)
# remove next line for success with find_closest()
self.mainw.f.c.mouse_text =
self.mainw.f.c.create_text(30,10,text='')
...
self.print_canvas()
print "Center coords: (%.1f,%.1f) and (%.1f, %.1f)" % (x0,y0,x1,y1)
f = mathutils.line_func((x0,y0),(x1,y1))
g = mathutils.inv_line_func((x0,y0),(x1,y1))
print "Objects near (%.1f,%.1f)" % (x0,y0), \
self.mainw.f.c.find_closest(x0,y0)
start_id = self.mainw.f.c.find_closest(x0,y0)[0]
print "start_id: ", start_id
start_x0,start_y0,start_x1,start_y1 = self.mainw.f.c.bbox(start_id)
print "Bounding box near (%.1f,%.1f): (%.1f,%.1f) x (%.1f,%.1f)" % \
(x0,y0,start_x0,start_y0,start_x1,start_y1)
print "Objects near (%.1f,%.1f)" % (x1,y1), \
self.mainw.f.c.find_closest(x1,y1)
end_id = self.mainw.f.c.find_closest(x1,y1)[0]
print "end_id: ", end_id
end_x0,end_y0,end_x1,end_y1 = self.mainw.f.c.bbox(end_id)
print "Bounding box near (%.1f,%.1f): (%.1f,%.1f) x (%.1f,%.1f)" % \
(x1,y1,end_x0,end_y0,end_x1,end_y1)
raw_input("Press <Enter> to continue...")
...
[/code]
[output="without offending text object"]
>>> p.display()
The canvas contains
------------------
Item_ID Type coords
1 text [200.0, 20.0]
2 text [278.09907304116047, 37.825603777564567]
3 text [340.72966684424534, 87.771835665427943]
4 text [375.48702419272826, 159.94623188786341]
5 text [375.48702419272826, 240.05376811213657]
6 text [340.72966684424534, 312.22816433457206]
7 text [278.09907304116047, 362.17439622243546]
8 text [200.00000000000003, 380.0]
9 text [121.90092695883955, 362.17439622243546]
10 text [59.270333155754656, 312.22816433457206]
11 text [24.512975807271744, 240.05376811213659]
12 text [24.512975807271744, 159.94623188786343]
13 text [59.270333155754628, 87.771835665428]
14 text [121.90092695883949, 37.825603777564567]
Center coords: (278.1,37.8) and (375.5, 159.9)
Objects near (278.1,37.8) (2,)
start_id: 2
Bounding box near (278.1,37.8): (269.0,32.0) x (288.0,45.0)
Objects near (375.5,159.9) (4,)
end_id: 4
Bounding box near (375.5,159.9): (362.0,154.0) x (388.0,167.0)
Press <Enter> to continue...
[/output]
[output="with offending text object"]
>>> p.display()
The canvas contains
------------------
Item_ID Type coords
1 text [30.0, 10.0]
2 text [200.0, 20.0]
3 text [278.09907304116047, 37.825603777564567]
4 text [340.72966684424534, 87.771835665427943]
5 text [375.48702419272826, 159.94623188786341]
6 text [375.48702419272826, 240.05376811213657]
7 text [340.72966684424534, 312.22816433457206]
8 text [278.09907304116047, 362.17439622243546]
9 text [200.00000000000003, 380.0]
10 text [121.90092695883955, 362.17439622243546]
11 text [59.270333155754656, 312.22816433457206]
12 text [24.512975807271744, 240.05376811213659]
13 text [24.512975807271744, 159.94623188786343]
14 text [59.270333155754628, 87.771835665428]
15 text [121.90092695883949, 37.825603777564567]
Center coords: (278.1,37.8) and (375.5, 159.9)
Objects near (278.1,37.8) (1,)
start_id: 1
Bounding box near (278.1,37.8): (29.0,4.0) x (31.0,17.0)
Objects near (375.5,159.9) (1,)
end_id: 1
Bounding box near (375.5,159.9): (29.0,4.0) x (31.0,17.0)
Press <Enter> to continue...
[/output]
Thanks for any insights,
Jeff Cagle
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