( For those who compile Blender themselves theres also a
patch that enables realtime update
of proportional highlight when changing radius during grab/rotate/scale. Second patch : enables new Python
function ".occlusion_get(rv3d)" for getting occlusion state of
BMesh elements in a certain RegionView3D, used in PreSel for making circle
limited visibility on faster and more accurate.)
The PreSel addon simply enables mesh element preselection highlighting
BEWARE : dont change the name of the addon file, or the addon will stop
First go to User Preferences->Addons and enable the PreSel addon in the
Then simply click "Start PreSel" at the bottom of the Mesh Tools panel et
Then click "Stop PreSel" to stop preselection highlighting.
When pressing Ctrl, one can highlight face/edge/vert paths.
When pressing Alt or Alt+Ctrl one can highlight loops/rings.
When proportional editing is on a gradient highlight will be made for
everything selected and the element highlighted (this last one can be turned
off). Proportional highlighting will at the moment not update when
changing the radius during tool operation, a current shortcoming in the
Python API, but a feature is implemented which allows using
CTRL+SHIFT+MOUSEWHEEL to interactively set the proportional radius!
This addon replaces the circle select with its own implementation:
toggle circle select on/off with Ckey
use ALT+MOUSEWHEEL to set circle select radius
select using RIGHTMOUSE, deselect using ALT+MIDDLEMOUSE
the reason for this is the user can now transform the view during circle
select (so MIDDLEMOUSE cannot be used for deselecting)
also other tools can be used with circle select still operating
Go to Presel Addon Preferences
(UserPreferences->Addons->Mesh->PreSel and click arrow next to it)
to change options :
SelColour : Change the highlight colour when hovering over a selected
element with the picker in the panel.
NoSelColour : Change the highlight colour when hovering over a
non-selected element with the picker in the panel.
Change vertex size and edge thickness.
Set face outline drawing to on or off.
When on, you can set the face outline thickness.
Also the realtime updating of proportional editing of the highlighted
element can be switched on/off.
Circle select tweaking: if on, use LeftMouse-drag (or RightMouse if you
select with Left) to do a one off circle select
operation, use with Alt to do deselecting. Will be slower when not in
circle select, because coordinates need to be
constantly recalculated when something changes.
Show Normals : when on, the normals of "single highlight" faces/verts
will be drawn.
Normal Length : set the draw length of the normals.
Ortho: circle zooms : sets behaviour of the circle select radius when
in orthogonal mode - changes when zooming or not
Circle select starting radius : whenever starting the addon, this will
be the default circle select radius