def zoom(self, factor, center=None):
# Init some variables
center = center if (center is not None) else self.center
assert len(center) in (2, 3, 4)
# Get scale factor, take scale ratio into account
if np.isscalar(factor):
scale = [factor, factor]
else:
if len(factor) != 2:
raise TypeError("factor must be scalar or length-2 sequence.")
scale = list(factor)
if self.aspect is not None:
scale[0] = scale[1]
# Make a new object (copy), so that allocation will
# trigger view_changed:
rect = Rect(self.rect)
# Get space from given center to edges
left_space = center[0] - rect.left
right_space = rect.right - center[0]
bottom_space = center[1] - rect.bottom
top_space = rect.top - center[1]
# Scale these spaces
rect.left = center[0] - left_space * scale[0]
rect.right = center[0] + right_space * scale[0]
rect.bottom = center[1] - bottom_space * scale[1]
rect.top = center[1] + top_space * scale[1]
self.rect = rect
self.currect_scale *= factor
for text, font_size in zip(self.texts,self.font_sizes):
text.font_size = font_size / self.currect_scale
def set_state(self, state=None, **kwargs):
D = state or {}
if 'rect' not in D:
return
for cam in self._linked_cameras:
r = Rect(D['rect'])
if cam is self._linked_cameras_no_update:
continue
try:
cam._linked_cameras_no_update = self
cam_rect = cam.get_state()['rect']
r.top = cam_rect.top
r.bottom = cam_rect.bottom
cam.set_state({'rect':r})
finally:
cam._linked_cameras_no_update = None
def set_state(self, state=None, **kwargs):
D = state or {}
if 'rect' not in D:
return
for cam in self._linked_cameras:
r = Rect(D['rect'])
if cam is self._linked_cameras_no_update:
continue
try:
cam._linked_cameras_no_update = self
cam_rect = cam.get_state()['rect']
r.top = cam_rect.top
r.bottom = cam_rect.bottom
cam.set_state({'rect': r})
finally:
cam._linked_cameras_no_update = None
def zoom(self, factor, center=None):
""" Zoom in (or out) at the given center
Parameters
----------
factor : float or tuple
Fraction by which the scene should be zoomed (e.g. a factor of 2
causes the scene to appear twice as large).
center : tuple of 2-4 elements
The center of the view. If not given or None, use the
current center.
"""
assert len(center) in (2, 3, 4)
# Get scale factor, take scale ratio into account
if np.isscalar(factor):
scale = [factor, factor]
else:
if len(factor) != 2:
raise TypeError("factor must be scalar or length-2 sequence.")
scale = list(factor)
if self.aspect is not None:
scale[0] = scale[1]
# Init some variables
center = center if (center is not None) else self.center
# Make a new object (copy), so that allocation will
# trigger view_changed:
rect = Rect(self.rect)
# Get space from given center to edges
left_space = center[0] - rect.left
right_space = rect.right - center[0]
bottom_space = center[1] - rect.bottom
top_space = rect.top - center[1]
# Scale these spaces
rect.left = center[0] - left_space * scale[0]
rect.right = center[0] + right_space * scale[0]
rect.bottom = center[1] - bottom_space * scale[1]
rect.top = center[1] + top_space * scale[1]
self.limit_zoom(rect)
self.rect = rect
def zoom(self, factor, center=None):
""" Zoom in (or out) at the given center
Parameters
----------
factor : float or tuple
Fraction by which the scene should be zoomed (e.g. a factor of 2
causes the scene to appear twice as large).
center : tuple of 2-4 elements
The center of the view. If not given or None, use the
current center.
"""
if self._zoomed:
return
assert len(center) in (2, 3, 4)
# Get scale factor, take scale ratio into account
if np.isscalar(factor):
scale = [factor, factor]
else:
if len(factor) != 2:
raise TypeError("factor must be scalar or length-2 sequence.")
scale = list(factor)
if self.aspect is not None:
scale[0] = scale[1]
# Init some variables
center = center if (center is not None) else self.center
# Make a new object (copy), so that allocation will
# trigger view_changed:
rect = Rect(self.rect)
if rect.right - rect.left < 0.1 and scale[0] < 1:
return
# Get space from given center to edges
left_space = center[0] - rect.left
right_space = rect.right - center[0]
bottom_space = center[1] - rect.bottom
top_space = rect.top - center[1]
# Scale these spaces
if self._zoom_axis == 'both' or self._zoom_axis == 'x':
rect.left = center[0] - left_space * scale[0]
rect.right = center[0] + right_space * scale[0]
if self._zoom_axis == 'both' or self._zoom_axis == 'y':
rect.bottom = center[1] - bottom_space * scale[1]
rect.top = center[1] + top_space * scale[1]
if self._ybounds is not None:
if rect.bottom < self._ybounds[0]:
rect.bottom = self._ybounds[0]
if rect.top > self._ybounds[1]:
rect.top = self._ybounds[1]
if self._xbounds is not None:
if rect.left < self._xbounds[0]:
rect.left = self._xbounds[0]
if rect.right > self._xbounds[1]:
rect.right = self._xbounds[1]
self.rect = rect
self._zoomed = True
for c in self._linked_panzoom:
if c._zoomed:
continue
new_center = []
new_center.append(rescale(center[0], self._xbounds[1], c._xbounds[1]))
new_center.append(rescale(center[1], self._ybounds[1], c._ybounds[1]))
new_center.extend([0,1])
c.zoom(factor, np.array(new_center))
self._zoomed = False
def zoom(self, factor, center=None):
""" Zoom in (or out) at the given center
Parameters
----------
factor : float or tuple
Fraction by which the scene should be zoomed (e.g. a factor of 2
causes the scene to appear twice as large).
center : tuple of 2-4 elements
The center of the view. If not given or None, use the
current center.
"""
if self.zoom is None:
return
if self._zoomed:
return
assert len(center) in (2, 3, 4)
# Get scale factor, take scale ratio into account
if np.isscalar(factor):
scale = [factor, factor]
else:
if len(factor) != 2:
raise TypeError("factor must be scalar or length-2 sequence.")
scale = list(factor)
if self.aspect is not None:
scale[0] = scale[1]
# Init some variables
center = center if (center is not None) else self.center
# Make a new object (copy), so that allocation will
# trigger view_changed:
rect = Rect(self.rect)
if rect.right - rect.left < 0.1 and scale[0] < 1:
return
# Get space from given center to edges
left_space = center[0] - rect.left
right_space = rect.right - center[0]
bottom_space = center[1] - rect.bottom
top_space = rect.top - center[1]
# Scale these spaces
if self._zoom_axis == 'both' or self._zoom_axis == 'x':
rect.left = center[0] - left_space * scale[0]
rect.right = center[0] + right_space * scale[0]
if self._zoom_axis == 'both' or self._zoom_axis == 'y':
rect.bottom = center[1] - bottom_space * scale[1]
rect.top = center[1] + top_space * scale[1]
if self._ybounds is not None:
if rect.bottom < self._ybounds[0]:
rect.bottom = self._ybounds[0]
if rect.top > self._ybounds[1]:
rect.top = self._ybounds[1]
if self._xbounds is not None:
if rect.left < self._xbounds[0]:
rect.left = self._xbounds[0]
if rect.right > self._xbounds[1]:
rect.right = self._xbounds[1]
self.rect = rect
self._zoomed = True
for c in self._linked_panzoom:
if c._zoomed:
continue
new_center = []
new_center.append(
rescale(center[0], self._xbounds[1], c._xbounds[1]))
new_center.append(
rescale(center[1], self._ybounds[1], c._ybounds[1]))
new_center.extend([0, 1])
c.zoom(factor, np.array(new_center))
self._zoomed = False
