View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0020053||Open CASCADE||OCCT:Visualization||public||2008-07-02 22:38||2018-05-07 12:50|
|Fixed in Version||6.3.0|
|Summary||0020053: Introduction of NIS vizualization library|
|Description||The new library 'NIS' is created, providing the API similar to the traditional|
AIS but with the main differences/improvements:
1. For every type of InteractiveObject there should be provided a corresponding
Drawer class that defines the presentation of the Object type using direct
OpenGl calls. This is a much faster way to display 3D objects, allowing to have
more than 1 million separate selectable entities in one view.
2. The abstract type NIS_InteractiveObject does not support any properties
(color, material, other aspects). The relevant properties should be defined in
the specializations of Drawer class, and the API to set/modify should be
implemented in the specializations of InteractiveObject class.
3. Interactive selection is managed by InteractiveObject methods instead of
special selector classes and data types. This is possible since in NIS the
selection is based on 3D representation (by a ray or a box corresponding to the
view direction) without intermediate 2D projection.
4. Many InteractiveContext instances can be attached to a V3d_View, these
instances being independent containers of interactive objects; removal
(detaching) of InteractiveContext instance destroys the contained objects.
All data types and algorithms are designed to provide the best performance for
both OpenGl (server side) and application. On the other hand, the API is open to
any feature supported by any version of OpenGl. This allows to build custom
presentations quickly and efficiently.
The type NIS_View subclasses V3d_View thus providing all its public API like
scene definition (view orientation, lights, background, etc.) as well as the
standard view transformations (pan/zoom/rotate,fitAll,...). The traditional
AIS-based presentations (e.g., AIS_Shape) are also supported, they can be
rendered together with NIS presentations in the same view window.
The DRAW test plugin, TKViewerTest, is modified so that it manages now
AIS_InteractiveContext and NIS_InteractiveContext together in one view window.
|Tags||No tags attached.|
|Test case number|
|2008-07-02 22:43||agv||OtherBugsDependingOnThis||=> 20035|
|2008-07-04 20:33||bugmaster||Assigned To||bugmaster => agv|
|2008-07-04 20:33||bugmaster||Status||new => assigned|
|2008-07-04 20:34||bugmaster||Status||assigned => tested|
|2008-08-26 17:11||bugmaster||Status||tested => verified|
|2009-06-23 18:57||bugmaster||Status||verified => closed|
|2009-06-23 18:57||bugmaster||Resolution||@0@ => fixed|
|2011-08-02 11:24||bugmaster||Category||OCCT:VIZ => OCCT:Visualization|
|2014-08-14 09:36||kgv||Relationship added||related to 0025148|
|2018-05-07 12:50||kgv||Relationship added||parent of 0029740|