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/*=========================================================================
Program: ParaView
Module: vtkPVCameraCueManipulator.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkPVCameraCueManipulator.h"
#include "vtkCamera.h"
#include "vtkCameraInterpolator.h"
#include "vtkObjectFactory.h"
#include "vtkPVCameraAnimationCue.h"
#include "vtkPVCameraKeyFrame.h"
#include "vtkPVRenderView.h"
#include "vtkSMSourceProxy.h"
#include "vtkPVDataInformation.h"
#include "vtkVector.h"
#include "vtkVectorOperators.h"
vtkStandardNewMacro(vtkPVCameraCueManipulator);
//------------------------------------------------------------------------------
vtkPVCameraCueManipulator::vtkPVCameraCueManipulator()
{
this->Mode = PATH;
this->CameraInterpolator = vtkCameraInterpolator::New();
this->DataSourceProxy = 0;
}
//------------------------------------------------------------------------------
vtkPVCameraCueManipulator::~vtkPVCameraCueManipulator()
{
this->CameraInterpolator->Delete();
}
//------------------------------------------------------------------------------
void vtkPVCameraCueManipulator::Initialize(vtkPVAnimationCue* cue)
{
this->Superclass::Initialize(cue);
int nos = this->GetNumberOfKeyFrames();
this->CameraInterpolator->Initialize();
this->CameraInterpolator->SetInterpolationTypeToSpline();
if (nos < 2)
{
vtkErrorMacro("Too few keyframes to animate.");
return;
}
if (this->Mode == PATH || this->Mode == FOLLOW_DATA)
{
// No need to initialize this->CameraInterpolator in PATH or
// FOLLOW_DATA mode
return;
}
// Set up this->CameraInterpolator.
for(int i=0; i < nos; i++)
{
vtkPVCameraKeyFrame* kf;
kf = vtkPVCameraKeyFrame::SafeDownCast(this->GetKeyFrameAtIndex(i));
if (!kf)
{
vtkErrorMacro("All keyframes in a vtkPVCameraKeyFrame must be "
"vtkPVCameraKeyFrame");
continue;
}
this->CameraInterpolator->AddCamera(kf->GetKeyTime(), kf->GetCamera());
}
}
//------------------------------------------------------------------------------
void vtkPVCameraCueManipulator::Finalize(vtkPVAnimationCue* cue)
{
this->Superclass::Finalize(cue);
}
//------------------------------------------------------------------------------
void vtkPVCameraCueManipulator::UpdateValue(double currenttime,
vtkPVAnimationCue* cue)
{
vtkPVCameraAnimationCue* cameraCue =
vtkPVCameraAnimationCue::SafeDownCast(cue);
if (!cameraCue)
{
vtkErrorMacro("This manipulator only works with vtkPVCameraAnimationCue.");
return;
}
vtkCamera* animatedCamera = cameraCue->GetCamera();
if (!animatedCamera)
{
vtkErrorMacro("No camera to animate.");
return;
}
if (this->Mode == CAMERA)
{
vtkCamera* camera = vtkCamera::New();
this->CameraInterpolator->InterpolateCamera(currenttime, camera);
animatedCamera->SetPosition(camera->GetPosition());
animatedCamera->SetFocalPoint(camera->GetFocalPoint());
animatedCamera->SetViewUp(camera->GetViewUp());
animatedCamera->SetViewAngle(camera->GetViewAngle());
animatedCamera->SetParallelScale(camera->GetParallelScale());
camera->Delete();
cameraCue->GetView()->ResetCameraClippingRange();
}
else if(this->Mode == FOLLOW_DATA)
{
vtkSMSourceProxy *proxy = vtkSMSourceProxy::SafeDownCast(this->DataSourceProxy);
if (proxy)
{
// With changes in vtkSMAnimationScene when this cue "tick" is called,
// we no longer need to call UpdatePipeline(), the pipeline will already be updated.
// proxy->UpdatePipeline();
// get the data bounds
vtkPVDataInformation *info = proxy->GetDataInformation();
double bounds[6];
info->GetBounds(bounds);
// calculate the center of the data
vtkVector3d center((bounds[0] + bounds[1]) * 0.5,
(bounds[2] + bounds[3]) * 0.5,
(bounds[4] + bounds[5]) * 0.5);
// move the camera's position and focal point based on
// the data's position at the current time
vtkVector3d position;
cameraCue->GetCamera()->GetPosition(&position[0]);
vtkVector3d focalPoint;
cameraCue->GetCamera()->GetFocalPoint(&focalPoint[0]);
cameraCue->GetCamera()->SetFocalPoint(¢er[0]);
position = center + (position - focalPoint);
cameraCue->GetCamera()->SetPosition(&position[0]);
}
else
{
vtkWarningMacro("No Data Source for Follow-Data Animation");
}
}
else
{
this->Superclass::UpdateValue(currenttime, cue);
}
}
//------------------------------------------------------------------------------
void vtkPVCameraCueManipulator::SetDataSourceProxy(vtkSMProxy *dataSourceProxy)
{
if(dataSourceProxy != this->DataSourceProxy)
{
this->DataSourceProxy = dataSourceProxy;
}
}
//------------------------------------------------------------------------------
void vtkPVCameraCueManipulator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Mode:" << this->Mode << endl;
}
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