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Fix minor bug in vertex insert #9396

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Merged
merged 4 commits into from
Oct 21, 2017
Merged

Fix minor bug in vertex insert #9396

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312d26a
Fix minor bug in vertex insert
fuzzythecat Oct 13, 2017
d9839d4
Make insert clearer
fuzzythecat Oct 13, 2017
a7c4e9f
Make delete clearer
fuzzythecat Oct 13, 2017
bcfd4f5
DOC: tweak how initial draw and updates are handled
tacaswell Oct 21, 2017
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20 changes: 10 additions & 10 deletions examples/event_handling/poly_editor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -59,7 +59,8 @@ def draw_callback(self, event):
self.background = self.canvas.copy_from_bbox(self.ax.bbox)
self.ax.draw_artist(self.poly)
self.ax.draw_artist(self.line)
self.canvas.blit(self.ax.bbox)
# do not need to blit here, this will fire before the screen is
# updated

def poly_changed(self, poly):
'this method is called whenever the polygon object is called'
Expand Down Expand Up @@ -114,9 +115,8 @@ def key_press_callback(self, event):
elif event.key == 'd':
ind = self.get_ind_under_point(event)
if ind is not None:
self.poly.xy = [tup
for i, tup in enumerate(self.poly.xy)
if i != ind]
self.poly.xy = np.delete(self.poly.xy,
ind, axis=0)
self.line.set_data(zip(*self.poly.xy))
elif event.key == 'i':
xys = self.poly.get_transform().transform(self.poly.xy)
Expand All @@ -126,14 +126,14 @@ def key_press_callback(self, event):
s1 = xys[i + 1]
d = dist_point_to_segment(p, s0, s1)
if d <= self.epsilon:
self.poly.xy = np.array(
list(self.poly.xy[:i]) +
[(event.xdata, event.ydata)] +
list(self.poly.xy[i:]))
self.poly.xy = np.insert(
self.poly.xy, i+1,
[event.xdata, event.ydata],
axis=0)
self.line.set_data(zip(*self.poly.xy))
break

self.canvas.draw()
if self.line.stale:
self.canvas.draw_idle()

def motion_notify_callback(self, event):
'on mouse movement'
Expand Down