elsewhere.

has been done so that the SceneOpts classes can copy them without
having to import the slicecanvas/lightboxcanvas modules, which would
then force import of all the OpenGL/GLObject stuff.

displayed with the bottom left voxel at display location (0, 0). This
means that calculating voxel location from display coordinates is
different depending on the space that the image is displayed in. I think
I've figured out the location panel, but need to double check, and need
to take a closer look at the editor.

Revamping ortho profile toolbar (which will be renamed to ortho edit
toolbar) - new icons and layouts.

I'm not happy with the edit profile behaviour, so am going to refactor
that soon too.

Bugfix to histgram panel (caused by changes to ViewPanel.togglePanel).

Bugfix to VectorOpts (removing listener  on overlay instead of display).

ActionButton class type is now optional, and argument order has changed.

GLImageObject now calls onUpdate whenever image data changes -
SliceCanvases were not being reset when images edited.

OrthoEditProfile explicitly calls Refresh on the OrthoPanel when various
things happen.

GLObject.getDataResolution

other things) listen on this property to detect overlay bounds/spatial
representation changes, instead of using a global listener on
DisplayOpts instances. ModelOpts is correspondingly broken, but about to
be fixed.

level.

appropriately. Some things are broken due to weakref-related changes in
the props package.

default values given to xax/yax/zax in
GLObject.__init__. generateVertices method, used by image objects which
display a slice through image texture, is implemenmted in GLImageObject
class, purely to eliminate code duplication. gllabel_funcs module now
has an init function. Other cosmetic changes.

crashing with GLModel instances, but they're not being rendered
properly.  No time to fix now.

<-> overlay type map to a module-level attribute.

needed to return one value per axis. Other minor cosmetic changes.

size. SceneOpts turns on software rendering before off-screen rendering.

documentation, need to be added.

complicated. LineVector hardware draw implementation is now working.

values. LineVector broken.

is buggy for LudoWeird-esque images

subclasses - GLRGBVector and GLLineVector. VectorOpts.displayMode no
longer exists.

voxCoords and texCoords. There may be a 0.5 voxel offset which I'm
currently not taking into account

the slice

preparation for a merge-into-master of the useful stuff. Also removed
'twoStageRender' option from SliceCanvas, as I am intending to build
this into GLImageObject/Volume/something.

to profile.mouseDown/Drag

to the GL representation. Removed references to GLVolume_pregen

is now done in the GLObject.__init__ constructor.