AnimationScene
VTKExamples/Cxx/Utilities/AnimationScene
Code
AnimationScene.cxx
#include <vtkSmartPointer.h>
#include <vtkAnimationCue.h>
#include <vtkRenderer.h>
#include <vtkSphereSource.h>
#include <vtkPolyDataMapper.h>
#include <vtkCommand.h>
#include <vtkAnimationScene.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
class CueAnimator
{
public:
CueAnimator()
{
this->SphereSource=0;
this->Mapper=0;
this->Actor=0;
}
~CueAnimator()
{
this->Cleanup();
}
void StartCue(vtkAnimationCue::AnimationCueInfo *vtkNotUsed(info),
vtkRenderer *ren)
{
cout << "*** IN StartCue " << endl;
this->SphereSource=vtkSphereSource::New();
this->SphereSource->SetRadius(0.5);
this->Mapper=vtkPolyDataMapper::New();
this->Mapper->SetInputConnection(this->SphereSource->GetOutputPort());
this->Actor=vtkActor::New();
this->Actor->SetMapper(this->Mapper);
ren->AddActor(this->Actor);
ren->ResetCamera();
ren->Render();
}
void Tick(vtkAnimationCue::AnimationCueInfo *info,
vtkRenderer *ren)
{
double newradius=0.1 +
(static_cast<double>(info->AnimationTime -
info->StartTime)/
static_cast<double>(info->EndTime-info->StartTime)) * 1;
this->SphereSource->SetRadius(newradius);
this->SphereSource->Update();
ren->Render();
}
void EndCue(vtkAnimationCue::AnimationCueInfo *vtkNotUsed(info),
vtkRenderer *ren)
{
(void)ren;
// don't remove the actor for the regression image.
// ren->RemoveActor(this->Actor);
this->Cleanup();
}
protected:
vtkSphereSource *SphereSource;
vtkPolyDataMapper *Mapper;
vtkActor *Actor;
void Cleanup()
{
if(this->SphereSource!=0)
{
this->SphereSource->Delete();
this->SphereSource=0;
}
if(this->Mapper!=0)
{
this->Mapper->Delete();
this->Mapper=0;
}
if(this->Actor!=0)
{
this->Actor->Delete();
this->Actor=0;
}
}
};
class vtkAnimationCueObserver : public vtkCommand
{
public:
static vtkAnimationCueObserver *New()
{
return new vtkAnimationCueObserver;
}
virtual void Execute(vtkObject *vtkNotUsed(caller),
unsigned long event,
void *calldata)
{
if(this->Animator!=0 && this->Renderer!=0)
{
vtkAnimationCue::AnimationCueInfo *info=
static_cast<vtkAnimationCue::AnimationCueInfo *>(calldata);
switch(event)
{
case vtkCommand::StartAnimationCueEvent:
this->Animator->StartCue(info,this->Renderer);
break;
case vtkCommand::EndAnimationCueEvent:
this->Animator->EndCue(info,this->Renderer);
break;
case vtkCommand::AnimationCueTickEvent:
this->Animator->Tick(info,this->Renderer);
break;
}
}
if(this->RenWin!=0)
{
this->RenWin->Render();
}
}
vtkRenderer *Renderer;
vtkRenderWindow *RenWin;
CueAnimator *Animator;
protected:
vtkAnimationCueObserver()
{
this->Renderer=0;
this->Animator=0;
this->RenWin=0;
}
};
int main(int, char *[])
{
// Create the graphics structure. The renderer renders into the
// render window.
vtkSmartPointer<vtkRenderWindowInteractor> iren =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkRenderer> ren1 =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renWin =
vtkSmartPointer<vtkRenderWindow>::New();
renWin->SetMultiSamples(0);
iren->SetRenderWindow(renWin);
renWin->AddRenderer(ren1);
renWin->Render();
// Create an Animation Scene
vtkSmartPointer<vtkAnimationScene> scene =
vtkSmartPointer<vtkAnimationScene>::New();
scene->SetModeToRealTime();
//scene->SetModeToSequence();
scene->SetLoop(0);
scene->SetFrameRate(5);
scene->SetStartTime(3);
scene->SetEndTime(20);
// Create an Animation Cue.
vtkSmartPointer<vtkAnimationCue> cue1 =
vtkSmartPointer<vtkAnimationCue>::New();
cue1->SetStartTime(5);
cue1->SetEndTime(23);
scene->AddCue(cue1);
// Create cue animator;
CueAnimator animator;
// Create Cue observer.
vtkSmartPointer<vtkAnimationCueObserver> observer =
vtkSmartPointer<vtkAnimationCueObserver>::New();
observer->Renderer=ren1;
observer->Animator=&animator;
observer->RenWin=renWin;
cue1->AddObserver(vtkCommand::StartAnimationCueEvent,observer);
cue1->AddObserver(vtkCommand::EndAnimationCueEvent,observer);
cue1->AddObserver(vtkCommand::AnimationCueTickEvent,observer);
scene->Play();
scene->Stop();
iren->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(AnimationScene)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(AnimationScene MACOSX_BUNDLE AnimationScene.cxx)
target_link_libraries(AnimationScene ${VTK_LIBRARIES})
Download and Build AnimationScene
Click here to download AnimationScene and its CMakeLists.txt file. Once the tarball AnimationScene.tar has been downloaded and extracted,
cd AnimationScene/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./AnimationScene
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.