add a create-flag to the node() method of a PropertyObject,
defaulting to false to maintain existing behaviour.
This could be used to add a listener to a non-existing property
without having to write a dummy-value beforehand.
Usage:
myPropertyObject->node() returns the corresponding node or NULL if
does not exist or has not been accessed before.
myPropertyObject->node(true) returns the corresponding node, never NULL.
If the property does not exist, it will gets created.
No need for this anymore as PRESERVE now works as expected.
Otherwise old canvasses are restored and do not work anymore
as the placements of the new canvasses do not apply.
Get rid of the possibilty to keep delted children. This was not
used actively, required unnecessary memory for each property node
and lead to subtile bugs, as creating a node after a node with
the same path has been deleted resulted in getting the old node
back instead of a cleanly initialized one.
Store unhandled xml attributes in a subnode named _attr_ for each
node on parsing propertylist files. This allows retrieving them at
a later stage where there is no access to the source xml file any
more.
Search the tree for leaves / sub-trees with a particular attribute set.
This permits both sparse selection as well as selection by sub-tree.
(This is needed for PRESERVE attribute, and once new reset is switched
on, will enable 'normal' copyProperties to revert to ignoring
attributes completely)
- without this change, elements aren't un-ref-ed and hence destroyed
until the actual dtor runs, which is too late (other systems may be
destroyed already)
Bug 1190, fix route-manager -> GPS activation on Windows
(and probably a couple of unrelated issues).
SGPropertyChangeCallback was missing a suitable copy-constructor,
leading to incorrect behaviour on compilers where the operation
is not elided. Such as MSVC.
Nodes inside the osg scenegraph now hold a strong reference to
the according canvas element. Canvas elements in turn now only
hold a weak reference to the according node. This simplifies
for example the canvas::Group as it does not need to keep a
list of children on its own anymore. This is now stored inside
the scenegraph (as it was already before).
The restructuring will also allow to use a canvas::Group for
the canvas gui inside FlightGear and share for example the
handling of stacking based on z-index.
Inspired by jQuery.animate() properties can be interpolated using
different easing functions and specifying an animation duration.
Additionally animations can be chained to get table-based
animations like with the current SGInterpolator, or also create
looped animations or other more complicated curves.
Currently this system is not used yet, but it is intended to
replace SGInterpolator and allow more advanced animations of
eg. also colors, for example, for the canvas.
Initial ground-work to support efficient updating of condition/expression results; allow collecting all the dependent property values from the hierarchy, so they can be observed. Also add a very small test-case for this.
- Fix overwriting of parent node if PropertyObject::node() is
called for a non-existing node.
- Prevent implicit conversion from const char* and
SGPropertyNode*
Erik Hofman