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/*=========================================================================
Program: ParaView
Module: vtkPVSinusoidKeyFrame.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 "vtkPVSinusoidKeyFrame.h"
#include "vtkObjectFactory.h"
#include "vtkPVAnimationCue.h"
//#include "vtkSMDomain.h"
//#include "vtkSMProxy.h"
//#include "vtkSMVectorProperty.h"
#include <math.h>
vtkStandardNewMacro(vtkPVSinusoidKeyFrame);
//----------------------------------------------------------------------------
vtkPVSinusoidKeyFrame::vtkPVSinusoidKeyFrame()
{
this->Phase = 0;
this->Frequency = 1;
this->Offset = 0;
}
//----------------------------------------------------------------------------
vtkPVSinusoidKeyFrame::~vtkPVSinusoidKeyFrame()
{
}
//----------------------------------------------------------------------------
// remeber that currenttime is 0 at the KeyTime of this key frame
// and 1 and the KeyTime of the next key frame. Hence,
// currenttime belongs to the interval [0,1).
void vtkPVSinusoidKeyFrame::UpdateValue(
double currenttime, vtkPVAnimationCue* cue, vtkPVKeyFrame* next)
{
if (!next)
{
return;
}
// Some computations: start + (end-start)*sin( 2*pi* (freq*t + phase/360) )
double t = sin(
8.0 * atan(static_cast<double>(1.0)) * (this->Frequency * currenttime + this->Phase / 360.0));
// Apply changes
cue->BeginUpdateAnimationValues();
int animated_element = cue->GetAnimatedElement();
if (animated_element != -1)
{
double amplitude = this->GetKeyValue();
double value = this->Offset + amplitude * t;
cue->SetAnimationValue(animated_element, value);
}
else
{
unsigned int i;
unsigned int start_novalues = this->GetNumberOfKeyValues();
unsigned int end_novalues = next->GetNumberOfKeyValues();
unsigned int min = (start_novalues < end_novalues) ? start_novalues : end_novalues;
// interpolate common indices.
for (i = 0; i < min; i++)
{
double amplitude = this->GetKeyValue(i);
double value = this->Offset + amplitude * t;
cue->SetAnimationValue(i, value);
}
// add any additional indices in start key frame.
for (i = min; i < start_novalues; i++)
{
cue->SetAnimationValue(i, this->GetKeyValue(i));
}
}
cue->EndUpdateAnimationValues();
}
//----------------------------------------------------------------------------
void vtkPVSinusoidKeyFrame::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Frequency: " << this->Frequency << endl;
os << indent << "Phase: " << this->Phase << endl;
os << indent << "Offset: " << this->Offset << endl;
}
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