VisualizationFoundation CAT3DLodRep
Usage: you must use this class as is. You should never derive it.
public class CAT3DLodRep
Class to define several representations, each of a different accuracy, to visualize
the same object.
Role: This representation introduces the concept of Levels Of Details within the
visualization of a scene. It manages a list of representations, that are
supposed to be of the same element, at different accuracy levels.
Representations of the element with a low accuracy level are supposed to
take less time to be drawn.
When the representation is requested to Draw itself, it chooses the best
of it's representations to draw, that is the representation whose accuracy
fits the pixel resolution of the element (size of a pixel onto the
object).
The CAT3DLodRep behaves as a CAT3DBagRep for which the children would be
a same representation computed at different accuracy levels.
Methods are provided, once the representation has been created, to add
Levels Of Detail (Lods). A Lod is added with a given accuracy (sag), that
will determine when it has to be drawn (at which distance from the eye)
instead of the original geometry.
The first Lod is considered as the 'original' geometry defining the
element.
The used bounding element is the one of the first Lod. Any other Lod
should fit in this bounding element.
At the representation destruction, every Lod is being deleted, including
the original geometry itself. A call to SuppressLod deletes the targetted
representation.
Constructor and Destructor Index
- o
CAT3DLodRep(void)
-
- o
~CAT3DLodRep(void)
- Destructor.
Method Index
- o
AddLod(CAT3DRep*,float)
- Adds a representation as a new level of detail.
- o
CreateRep()
- Default constructor.
- o
GetLod(int)
- Gets the representation of a given LOD.
- o
GetLodSag(int)
- Gets the sag associated to the representation of a given LOD.
- o
NbLods(void)
- Gets the number of different representations
used to represent the same object at different accuracy
levels.
- o
SuppressLod(int)
- Supresses a given representation
from the list of representations used
as levels of details.
Constructor and Destructor
o CAT3DLodRep
-
- Deprecated:
- R417 : Use CreateRep instead.
o ~CAT3DLodRep
| public virtual ~CAT3DLodRep( | | ) |
-
Destructor.
Methods
o AddLod
| public AddLod( | | iLod, |
| | iSag) |
-
Adds a representation as a new level of detail.
- Parameters:
-
- iLod
- The 3D representation that would be
used to visualize the object at the
associated accuracy.
- iSag
- The sag used to tessellate
the associated representation, expressed
in millimeters.
This sag is used to determine which LOD
is the most appropriated to represent the
object at a certain distance, and with a certain
session sag, fixed thanks to the CATIA
Tools > Options > Performance menu.
o CreateRep
| public static CreateRep( | ) |
-
Default constructor.
o GetLod
-
Gets the representation of a given LOD.
- Parameters:
-
- iNumLod
- The index of the LOD which
representation is retrieved.
o GetLodSag
| public GetLodSag( | | iNumLod) |
-
Gets the sag associated to the representation of a given LOD.
- Parameters:
-
- iNumLod
- The index of the LOD which
sag is retrieved.
o NbLods
-
Gets the number of different representations
used to represent the same object at different accuracy
levels.
o SuppressLod
| public SuppressLod( | | iNumLod) |
-
Supresses a given representation
from the list of representations used
as levels of details. The supressed representation
is destroyed.
- Parameters:
-
- iNumLod
- The index of the LOD you want to
supress.
This object is included in the file: CAT3DLodRep.h
If needed, your Imakefile.mk should include the module: CATVisFoundation
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