[Back to Blog](/blog) # ODA BimNv SDK: Save Viewpoints
Vadim Asandiy May 11, 2023 [\#BimNv](/blog/tag/bimnv) [\#getting started](/blog/tag/getting-started)
To access saved viewpoints in NWD/NWC files, use the method OdResult OdNwDatabase::getSavedViewsElements(OdNwObjectIdArray& aSavedViewsElementIds) const:
```
//…
OdNwDatabasePtr pDb;
//…
OdNwObjectIdArray aSavedViewElements;
if (pDb->getSavedViewsElements(aSavedViewElements) == eOk)
//…
```
All of these objects are derived from the OdNwSavedItem class:
```
//…
for (OdInt32 i = 0; i < aSavedViewElements.size(); i++)
{
OdNwSavedItemPtr pSI = aSavedViewElements[i].openObject();
//…
```
Each saved item has a common property set:
```
//…
OdArray aComments = pSI->getCommentCollection();
for (OdInt32 i = 0; i < aComments.size(); i++)
{
OdNwComment& comment = aComments[i];
//comment author
OdString sAuthor = comment.getAuthor();
//comment's content
OdString sBody = comment.getBody();
//when this comment was created
tm createDate = comment.getCreateDate();
//is this comment – new, active, approved or resolved
NwCommentStatus::Enum status = comment.getStatus();
}
OdString sSIName = pSI->getDisplayName();
OdGUID guidSI = pSI->getGuID();
OdNwObjectId parentId = pSI->getParentId();
//…
```
- Comment list — Get by using the method OdArray<OdNwComment> getCommentCollection() const.
- Saved item's name — Get by using the method OdString getDisplayName() const..
- Global GUID — Get by using the method OdGUID getGuID() const.
- Parent of current item — Get by using the method OdNwObjectId getParentId() const, which accesses the hierarchy of the saved item's root tree structure.
Saved viewpoints can be any of the following:
- Folder item, which contains nested saved items as children:
```
//…
if (pSI->isA() == OdNwSavedFolderItem::desc())
{
OdNwSavedFolderItemPtr pFolder = OdNwSavedFolderItem::cast(pSI);
OdNwObjectIdArray aChildren;
if (pFolder->getChildren(aChildren) == eOk)
{
for (OdInt32 i = 0; i < aChildren.size(); i++)
{
OdNwSavedItem pChildSI = aChildren[i].openObject();
//…
}
//…
```
- One frame cut from an animation:
```
//…
if (pSI->isA() == OdNwSavedViewpointAnimationCut::desc())
{
OdNwSavedViewpointAnimationCutPtr pAnimCut = OdNwSavedViewpointAnimationCut::cast(pSI);
double cutDelay = pAnimCut-> getDelay();
}
//…
```
- An animation, which can contain nested saved items as children:
```
//…
if (pSI->isA() == OdNwSavedViewpointAnimation::desc())
{
OdNwSavedViewpointAnimationPtr pAnim = OdNwSavedViewpointAnimation::cast(pSI);
OdInt32 loopPlayback = pAnim->getLoopPlayback();
NwAnimationSmoothing::Enum smoothing = pAnim->getSmoothing();
OdNwObjectIdArray aChildren;
if (pAnim->getChildren(aChildren) == eOk)
{
for (OdInt32 i = 0; i < aChildren.size(); i++)
{
OdNwSavedItem pChildSI = aChildren[i].openObject();
//…
}
//…
```
- Retrieved saved viewpoints with parameters, cutting plains, redline data, and override appearance information:
```
//…
if (pSI->isA() == OdNwSavedViewpoint::desc())
{
OdNwSavedViewpointPtr pSavedViewpoint = OdNwSavedViewpoint::cast(pSI);
// get viewpoint
OdNwViewpoint pView = pSavedViewpoint->getViewpointId().openObject();
// get section data
OdNwClipPlaneSetPtr pClipPlane = pSavedViewpoint->getClippingPlanesId().openObject();
// get redline data if saved viewpoints has
OdNwObjectIdArray aRedLines;
pSavedViewpoint->getRedLineList(aRedLines);
// get override appearance info for this saved viewpoint
OdNwObjectIdArray aHiddensMIs;
pSavedViewpoint->getHiddens(aHiddensMIs);
OdNwObjectIdArray aRequiredsMIs;
pSavedViewpoint->getRequireds (aRequiredsMIs);
OdUInt32 cntOfAppearanceOverride = pSavedViewpoint->getAppearanceOverrideCount();
OdNwObjectIdArray aOverrideAppearanceMIs;
OdNwObjectId matId;
pSavedViewpoint->getAppearanceOverride(0, aOverrideAppearanceMIs, matId);
}
//…
```
Example code that shows how to work with saved viewpoints can be found in the Nw2Visualize plugin source code.
For example, to import saved viewpoints from an NWD file:
1. Run OdVisualizeViewer and when opening an NWD/NWC file, mark Import Saved Viewpoints
2. All saved viewpoints without redlines are imported as TvCamera objects to Database > Models > Service Models > Model <$ODA\_TVVIEWER\_SAVEDVIEWS>.
3. Here is the saved viewpoint hierarchy from Autodesk® Navisworks®:
4. To set a saved viewpoint as the active view, select the needed camera in the Visualize Object Explorer and assign it as the active view from the properties window:
5. See the comparison of views in Navisworks and OdVisualizeViewer:
- internals |  |  |
| --- | --- |
| View in Navisworks | View in OdVisualizeViewer |
- rear drive |  |  |
| --- | --- |
| View in Navisworks | View in OdVisualizeViewer |
- overview |  |  |
| --- | --- |
Find out more in our documentation: [https://docs.opendesign.com/bimnv/bimnv\_saving\_viewpoints.html](https://docs.opendesign.com/bimnv/bimnv_saving_viewpoints.html)
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