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an actor that supports multiple levels of detail More...
#include <vtkLODActor.h>
an actor that supports multiple levels of detail
vtkLODActor is an actor that stores multiple levels of detail (LOD) and can automatically switch between them. It selects which level of detail to use based on how much time it has been allocated to render. Currently a very simple method of TotalTime/NumberOfActors is used. (In the future this should be modified to dynamically allocate the rendering time between different actors based on their needs.)
There are three levels of detail by default. The top level is just the normal data. The lowest level of detail is a simple bounding box outline of the actor. The middle level of detail is a point cloud of a fixed number of points that have been randomly sampled from the mapper's input data. Point attributes are copied over to the point cloud. These two lower levels of detail are accomplished by creating instances of a vtkOutlineFilter (low-res) and vtkMaskPoints (medium-res). Additional levels of detail can be add using the AddLODMapper() method.
To control the frame rate, you typically set the vtkRenderWindowInteractor DesiredUpdateRate and StillUpdateRate. This then will cause vtkLODActor to adjust its LOD to fulfill the requested update rate.
For greater control on levels of detail, see also vtkLODProp3D. That class allows arbitrary definition of each LOD.
Definition at line 75 of file vtkLODActor.h.
typedef vtkActor vtkLODActor::Superclass |
Reimplemented from vtkActor.
Definition at line 78 of file vtkLODActor.h.
vtkLODActor::vtkLODActor | ( | ) | [protected] |
vtkLODActor::~vtkLODActor | ( | ) | [protected] |
static int vtkLODActor::IsTypeOf | ( | const char * | name | ) | [static] |
Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkActor.
virtual int vtkLODActor::IsA | ( | const char * | name | ) | [virtual] |
Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkActor.
static vtkLODActor* vtkLODActor::SafeDownCast | ( | vtkObjectBase * | o | ) | [static] |
Reimplemented from vtkActor.
virtual vtkObjectBase* vtkLODActor::NewInstanceInternal | ( | ) | const [protected, virtual] |
Reimplemented from vtkActor.
vtkLODActor* vtkLODActor::NewInstance | ( | ) | const |
Reimplemented from vtkActor.
void vtkLODActor::PrintSelf | ( | ostream & | os, |
vtkIndent | indent | ||
) | [virtual] |
static vtkLODActor* vtkLODActor::New | ( | ) | [static] |
Creates a vtkLODActor with the following defaults: origin(0,0,0) position=(0,0,0) scale=(1,1,1) visibility=1 pickable=1 dragable=1 orientation=(0,0,0). NumberOfCloudPoints is set to 150.
Reimplemented from vtkActor.
virtual void vtkLODActor::Render | ( | vtkRenderer * | , |
vtkMapper * | |||
) | [virtual] |
This causes the actor to be rendered. It, in turn, will render the actor's property and then mapper.
Reimplemented from vtkActor.
int vtkLODActor::RenderOpaqueGeometry | ( | vtkViewport * | viewport | ) | [virtual] |
This method is used internally by the rendering process. We overide the superclass method to properly set the estimated render time.
Reimplemented from vtkActor.
void vtkLODActor::ReleaseGraphicsResources | ( | vtkWindow * | ) | [virtual] |
Release any graphics resources that are being consumed by this actor. The parameter window could be used to determine which graphic resources to release.
Reimplemented from vtkActor.
void vtkLODActor::AddLODMapper | ( | vtkMapper * | mapper | ) |
Add another level of detail. They do not have to be in any order of complexity.
virtual void vtkLODActor::SetLowResFilter | ( | vtkPolyDataAlgorithm * | ) | [virtual] |
You may plug in your own filters to decimate/subsample the input. The default is to use a vtkOutlineFilter (low-res) and vtkMaskPoints (medium-res).
virtual void vtkLODActor::SetMediumResFilter | ( | vtkPolyDataAlgorithm * | ) | [virtual] |
You may plug in your own filters to decimate/subsample the input. The default is to use a vtkOutlineFilter (low-res) and vtkMaskPoints (medium-res).
virtual vtkPolyDataAlgorithm* vtkLODActor::GetLowResFilter | ( | ) | [virtual] |
You may plug in your own filters to decimate/subsample the input. The default is to use a vtkOutlineFilter (low-res) and vtkMaskPoints (medium-res).
virtual vtkPolyDataAlgorithm* vtkLODActor::GetMediumResFilter | ( | ) | [virtual] |
You may plug in your own filters to decimate/subsample the input. The default is to use a vtkOutlineFilter (low-res) and vtkMaskPoints (medium-res).
virtual int vtkLODActor::GetNumberOfCloudPoints | ( | ) | [virtual] |
Set/Get the number of random points for the point cloud.
virtual void vtkLODActor::SetNumberOfCloudPoints | ( | int | ) | [virtual] |
Set/Get the number of random points for the point cloud.
virtual vtkMapperCollection* vtkLODActor::GetLODMappers | ( | ) | [virtual] |
All the mappers for different LODs are stored here. The order is not important.
void vtkLODActor::Modified | ( | ) | [virtual] |
When this objects gets modified, this method also modifies the object.
Reimplemented from vtkObject.
void vtkLODActor::ShallowCopy | ( | vtkProp * | prop | ) | [virtual] |
virtual void vtkLODActor::CreateOwnLODs | ( | ) | [protected, virtual] |
virtual void vtkLODActor::UpdateOwnLODs | ( | ) | [protected, virtual] |
virtual void vtkLODActor::DeleteOwnLODs | ( | ) | [protected, virtual] |
vtkActor* vtkLODActor::Device [protected] |
Definition at line 136 of file vtkLODActor.h.
vtkMapperCollection* vtkLODActor::LODMappers [protected] |
Definition at line 137 of file vtkLODActor.h.
vtkPolyDataAlgorithm* vtkLODActor::LowResFilter [protected] |
Definition at line 141 of file vtkLODActor.h.
vtkPolyDataAlgorithm* vtkLODActor::MediumResFilter [protected] |
Definition at line 142 of file vtkLODActor.h.
vtkPolyDataMapper* vtkLODActor::LowMapper [protected] |
Definition at line 143 of file vtkLODActor.h.
vtkPolyDataMapper* vtkLODActor::MediumMapper [protected] |
Definition at line 144 of file vtkLODActor.h.
vtkTimeStamp vtkLODActor::BuildTime [protected] |
Definition at line 146 of file vtkLODActor.h.
int vtkLODActor::NumberOfCloudPoints [protected] |
Definition at line 147 of file vtkLODActor.h.