def _compute_cached_image(self, selection_masks=None):
""" Updates the cached image.
"""
self._cached_image = None
if not self._mapped_image_cache_valid:
# Clear the old image. We don't need the extra memory lying around
# as we compute the new mapped image.
self._cached_mapped_image = None
self._cached_mapped_image =\
self.value_mapper.map_screen(self.value.data)
self._cached_mapped_image *= 255
self._cached_mapped_image = \
self._cached_mapped_image.astype('uint8')
if selection_masks is not None:
if len(selection_masks) > 0:
mask = selection_masks[0].copy()
for m in selection_masks[1:]:
mask |= m
else:
mask = zeros(self._cached_mapped_image.shape[:2],
dtype=bool)
# Apply the selection fade, from speedups.py
apply_selection_fade(self._cached_mapped_image, mask,
self.fade_alpha, self.fade_background)
self._mapped_image_cache_valid = True
ImagePlot._compute_cached_image(self, self._cached_mapped_image)
def _compute_cached_image(self, selection_masks=None):
""" Updates the cached image.
"""
self._cached_image = None
if not self._mapped_image_cache_valid:
# Clear the old image. We don't need the extra memory lying around
# as we compute the new mapped image.
self._cached_mapped_image = None
self._cached_mapped_image =\
self.value_mapper.map_screen(self.value.data)
self._cached_mapped_image *= 255
self._cached_mapped_image = \
self._cached_mapped_image.astype('uint8')
if selection_masks is not None:
if len(selection_masks) > 0:
mask = selection_masks[0].copy()
for m in selection_masks[1:]:
mask |= m
else:
mask = zeros(self._cached_mapped_image.shape[:2],
dtype=bool)
# Apply the selection fade, from speedups.py
apply_selection_fade(self._cached_mapped_image, mask,
self.fade_alpha, self.fade_background)
self._mapped_image_cache_valid = True
ImagePlot._compute_cached_image(self, self._cached_mapped_image)
def _compute_cached_image(self, selection_masks=None):
""" Updates the cached image.
"""
if self.cache_full_map:
if not self._mapped_image_cache_valid:
self._cached_mapped_image = self._cmap_values(self.value.data, selection_masks)
self._mapped_image_cache_valid = True
mapped_value = self._cached_mapped_image
ImagePlot._compute_cached_image(self, mapped_value)
else:
self._mapped_image_cache_valid = True
ImagePlot._compute_cached_image(self, self.value.data, mapper=lambda data: self._cmap_values(data))
def _compute_cached_image(self, selection_masks=None):
""" Updates the cached image.
"""
if self.cache_full_map:
if not self._mapped_image_cache_valid:
self._cached_mapped_image = self._cmap_values(self.value.data,
selection_masks)
self._mapped_image_cache_valid = True
mapped_value = self._cached_mapped_image
ImagePlot._compute_cached_image(self, mapped_value)
else:
self._mapped_image_cache_valid = True
ImagePlot._compute_cached_image(self, self.value.data, mapper=lambda data:
self._cmap_values(data))
def _compute_cached_image(self, selection_masks=None):
""" Updates the cached image.
"""
if not self._mapped_image_cache_valid:
cached_mapped_image = \
self.value_mapper.map_screen(self.value.data) * 255
if selection_masks is not None:
# construct a composite mask
mask = zeros(cached_mapped_image.shape[:2], dtype=bool)
for m in selection_masks:
mask = mask | m
invmask = invert(mask)
# do a cheap alpha blend with our specified color
cached_mapped_image[invmask,0:3] = \
self.fade_alpha*(cached_mapped_image[invmask,0:3] -
self.fade_background) + self.fade_background
self._cached_mapped_image = cached_mapped_image
self._mapped_image_cache_valid = True
mapped_value = self._cached_mapped_image
ImagePlot._compute_cached_image(self, mapped_value.astype("UInt8"))
def _compute_cached_image(self, selection_masks=None):
""" Updates the cached image.
"""
if not self._mapped_image_cache_valid:
cached_mapped_image = \
self.value_mapper.map_screen(self.value.data) * 255
if selection_masks is not None:
# construct a composite mask
mask = zeros(cached_mapped_image.shape[:2], dtype=bool)
for m in selection_masks:
mask = mask | m
invmask = invert(mask)
# do a cheap alpha blend with our specified color
cached_mapped_image[invmask,0:3] = \
self.fade_alpha*(cached_mapped_image[invmask,0:3] -
self.fade_background) + self.fade_background
self._cached_mapped_image = cached_mapped_image
self._mapped_image_cache_valid = True
mapped_value = self._cached_mapped_image
ImagePlot._compute_cached_image(self, mapped_value.astype("UInt8"))
