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vtkWindowToImageFilter.cxx
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vtkWindowToImageFilter.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkWindowToImageFilter.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm 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 "vtkWindowToImageFilter.h"
#include "vtkMath.h"
#include "vtkCamera.h"
#include "vtkImageData.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkRenderWindow.h"
#include "vtkRendererCollection.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkCoordinate.h"
#include "vtkActor2D.h"
#include "vtkActor2DCollection.h"
#include <vector>
#define BORDER_PIXELS 2
vtkStandardNewMacro(vtkWindowToImageFilter);
class vtkWTI2DHelperClass
{
public:
// maintain a list of 2D actors
vtkActor2DCollection *StoredActors;
// maintain lists of their vtkCoordinate objects
vtkCollection *Coord1s;
vtkCollection *Coord2s;
// Store the display coords for adjustment during tiling
std::vector< std::pair<int, int> > Coords1;
std::vector< std::pair<int, int> > Coords2;
//
vtkWTI2DHelperClass()
{
this->StoredActors = vtkActor2DCollection::New();
this->Coord1s = vtkCollection::New();
this->Coord2s = vtkCollection::New();
}
~vtkWTI2DHelperClass()
{
this->Coord1s->RemoveAllItems();
this->Coord2s->RemoveAllItems();
this->StoredActors->RemoveAllItems();
this->Coord1s->Delete();
this->Coord2s->Delete();
this->StoredActors->Delete();
}
};
//----------------------------------------------------------------------------
vtkWindowToImageFilter::vtkWindowToImageFilter()
{
this->Input = NULL;
this->Magnification = 1;
this->ReadFrontBuffer = 1;
this->ShouldRerender = 1;
this->Viewport[0] = 0;
this->Viewport[1] = 0;
this->Viewport[2] = 1;
this->Viewport[3] = 1;
this->InputBufferType = VTK_RGB;
this->FixBoundary = false;
this->SetNumberOfInputPorts(0);
this->SetNumberOfOutputPorts(1);
this->StoredData = new vtkWTI2DHelperClass;
}
//----------------------------------------------------------------------------
vtkWindowToImageFilter::~vtkWindowToImageFilter()
{
if (this->Input)
{
this->Input->UnRegister(this);
this->Input = NULL;
}
delete this->StoredData;
}
//----------------------------------------------------------------------------
vtkImageData* vtkWindowToImageFilter::GetOutput()
{
return vtkImageData::SafeDownCast(this->GetOutputDataObject(0));
}
//----------------------------------------------------------------------------
void vtkWindowToImageFilter::SetInput(vtkWindow *input)
{
if (input != this->Input)
{
if (this->Input) {this->Input->UnRegister(this);}
this->Input = input;
if (this->Input) {this->Input->Register(this);}
this->Modified();
}
}
//----------------------------------------------------------------------------
void vtkWindowToImageFilter::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
if ( this->Input )
{
os << indent << "Input:\n";
this->Input->PrintSelf(os,indent.GetNextIndent());
}
else
{
os << indent << "Input: (none)\n";
}
os << indent << "ReadFrontBuffer: " << this->ReadFrontBuffer << "\n";
os << indent << "Magnification: " << this->Magnification << "\n";
os << indent << "ShouldRerender: " << this->ShouldRerender << "\n";
os << indent << "Viewport: " << this->Viewport[0] << "," << this->Viewport[1]
<< "," << this->Viewport[2] << "," << this->Viewport[3] << "\n";
os << indent << "InputBufferType: " << this->InputBufferType << "\n";
os << indent << "FixBoundary: " << this->FixBoundary << endl;
}
//----------------------------------------------------------------------------
void vtkWindowToImageFilter::SetViewport(double a1, double a2, double a3, double a4)
{
a1 = vtkMath::ClampValue(a1, 0.0, 1.0);
a2 = vtkMath::ClampValue(a2, 0.0, 1.0);
a3 = vtkMath::ClampValue(a3, 0.0, 1.0);
a4 = vtkMath::ClampValue(a4, 0.0, 1.0);
vtkDebugMacro(<< this->GetClassName() << " (" << this << "): setting Viewport to (" << a1 << "," << a2 << "," << a3 << "," << a4 << ")");
if ((this->Viewport[0] != a1) || (this->Viewport[1] != a2) || (this->Viewport[2] != a3) || (this->Viewport[3] != a4))
{
this->Viewport[0] = a1;
this->Viewport[1] = a2;
this->Viewport[2] = a3;
this->Viewport[3] = a4;
this->Modified();
}
}
//----------------------------------------------------------------------------
void vtkWindowToImageFilter::SetViewport(double vp[4])
{
this->SetViewport(vp[0], vp[1], vp[2], vp[3]);
}
//----------------------------------------------------------------------------
// This method returns the largest region that can be generated.
void vtkWindowToImageFilter::RequestInformation (
vtkInformation * vtkNotUsed(request),
vtkInformationVector** vtkNotUsed( inputVector ),
vtkInformationVector *outputVector)
{
if (this->Input == NULL )
{
vtkErrorMacro(<<"Please specify a renderer as input!");
return;
}
int tileScale[2];
this->Input->GetTileScale(tileScale);
int magTileScale[2] = {tileScale[0] * this->Magnification,
tileScale[1] * this->Magnification};
if((magTileScale[0] > 1 || magTileScale[1] > 1) &&
(this->Viewport[0] != 0 || this->Viewport[1] != 0 ||
this->Viewport[2] != 1 || this->Viewport[3] != 1))
{
vtkWarningMacro(<<"Viewport extents are not used when Magnification > 1 "
"or tiled displays are used.");
this->Viewport[0] = 0;
this->Viewport[1] = 0;
this->Viewport[2] = 1;
this->Viewport[3] = 1;
}
// set the extent
int *size = this->Input->GetSize();
int wExtent[6];
wExtent[0]= 0;
wExtent[1] = (int(this->Viewport[2] * size[0] + 0.5)-
int(this->Viewport[0] * size[0])) * this->Magnification - 1;
wExtent[2] = 0;
wExtent[3] = (int(this->Viewport[3] * size[1] + 0.5)-
int(this->Viewport[1] * size[1])) * this->Magnification - 1;
wExtent[4] = 0;
wExtent[5] = 0;
// get the info objects
vtkInformation* outInfo = outputVector->GetInformationObject(0);
outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), wExtent, 6);
switch( this->InputBufferType )
{
case VTK_RGB:
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, VTK_UNSIGNED_CHAR, 3);
break;
case VTK_RGBA:
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, VTK_UNSIGNED_CHAR, 4);
break;
case VTK_ZBUFFER:
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, VTK_FLOAT, 1);
break;
default:
// VTK_RGB configuration by default
vtkDataObject::SetPointDataActiveScalarInfo(outInfo, VTK_UNSIGNED_CHAR, 3);
break;
}
}
//----------------------------------------------------------------------------
int vtkWindowToImageFilter::ProcessRequest(vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector)
{
// generate the data
if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA()))
{
this->RequestData(request, inputVector, outputVector);
return 1;
}
// execute information
if(request->Has(vtkDemandDrivenPipeline::REQUEST_INFORMATION()))
{
this->RequestInformation(request, inputVector, outputVector);
return 1;
}
return this->Superclass::ProcessRequest(request, inputVector, outputVector);
}
//----------------------------------------------------------------------------
// This function reads a region from a file. The regions extent/axes
// are assumed to be the same as the file extent/order.
void vtkWindowToImageFilter::RequestData(
vtkInformation* vtkNotUsed( request ),
vtkInformationVector** vtkNotUsed( inputVector ),
vtkInformationVector* outputVector)
{
vtkInformation *outInfo = outputVector->GetInformationObject(0);
vtkImageData *out =
vtkImageData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()));
out->SetExtent(
outInfo->Get(vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT()));
out->AllocateScalars(outInfo);
if (!this->Input)
{
return;
}
vtkRenderWindow *renWin = vtkRenderWindow::SafeDownCast(this->Input);
if (!renWin)
{
vtkWarningMacro(
"The window passed to window to image should be a RenderWindow or one of its subclasses");
return;
}
if (! ((out->GetScalarType() == VTK_UNSIGNED_CHAR &&
(this->InputBufferType == VTK_RGB || this->InputBufferType == VTK_RGBA)) ||
(out->GetScalarType() == VTK_FLOAT && this->InputBufferType == VTK_ZBUFFER)))
{
vtkErrorMacro("mismatch in scalar types!");
return;
}
int tileScale[2];
this->Input->GetTileScale(tileScale);
int magTileScale[2] = {this->Magnification * tileScale[0],
this->Magnification * tileScale[1]};
int tileSize[2] = {this->Input->GetActualSize()[0],
this->Input->GetActualSize()[1]};
// This is the size of the window with all tiles accounted for:
int winSize[2] = {this->Input->GetSize()[0], this->Input->GetSize()[1]};
int imageBounds[4] =
{
int(this->Viewport[0] * tileSize[0]),
int(this->Viewport[1] * tileSize[1]),
int(this->Viewport[2] * tileSize[0] + 0.5) - 1,
int(this->Viewport[3] * tileSize[1] + 0.5) - 1
};
int vpSize[2] = {imageBounds[2] - imageBounds[0] + 1,
imageBounds[3] - imageBounds[1] + 1};
int imageSize[2] = {vpSize[0] * magTileScale[0],
vpSize[1] * magTileScale[1]};
int inIncrY = vpSize[0];
inIncrY *= (this->InputBufferType == VTK_RGB) ? 3 :
((this->InputBufferType == VTK_RGBA) ? 4 : 1);
int outIncrY = imageSize[0] * out->GetNumberOfScalarComponents();
vtkRendererCollection *rc = renWin->GetRenderers();
vtkRenderer *aren;
vtkCamera *cam;
int numRenderers = rc->GetNumberOfItems();
// for each renderer
vtkCamera **cams = new vtkCamera *[numRenderers];
float* viewAngles = new float [numRenderers];
double* windowCenters = new double [numRenderers*2];
double *parallelScale = new double [numRenderers];
vtkCollectionSimpleIterator rsit;
rc->InitTraversal(rsit);
for (int i = 0; i < numRenderers; ++i)
{
aren = rc->GetNextRenderer(rsit);
cams[i] = aren->GetActiveCamera();
cams[i]->Register(this);
cams[i]->GetWindowCenter(windowCenters+i*2);
viewAngles[i] = cams[i]->GetViewAngle();
parallelScale[i] = cams[i]->GetParallelScale();
cam = cams[i]->NewInstance();
cam->ShallowCopy(cams[i]);
aren->SetActiveCamera(cam);
}
// render each of the tiles required to fill this request
this->Input->SetTileScale(magTileScale);
this->Input->GetSize();
//this->Rescale2DActors();
int num_iterations[2] = {magTileScale[0], magTileScale[1]};
bool overlap_viewports = false;
if (this->FixBoundary)
{
if ((magTileScale[0] > 1 || magTileScale[1] > 1) && winSize[0] >= 50)
{
++num_iterations[0];
++num_iterations[1];
overlap_viewports = true;
}
}
// Precompute the tile this->Viewport for each iteration.
double *viewports = new double[4 * num_iterations[0] * num_iterations[1]];
for (int y = 0; y < num_iterations[1]; y++)
{
for (int x = 0; x < num_iterations[0]; x++)
{
double* cur_viewport = &viewports[(num_iterations[1] * y + x) * 4];
cur_viewport[0] = static_cast<double>(x) / magTileScale[0];
cur_viewport[1] = static_cast<double>(y) / magTileScale[1];
cur_viewport[2] = (x + 1.0) / magTileScale[0];
cur_viewport[3] = (y + 1.0) / magTileScale[1];
if (overlap_viewports)
{
if (x > 0 && x < num_iterations[0] - 1)
{
cur_viewport[0] -= x * (BORDER_PIXELS * 2.0) / tileSize[0];
cur_viewport[2] -= x * (BORDER_PIXELS * 2.0) / tileSize[0];
}
if (x == num_iterations[0] - 1)
{
cur_viewport[0] = static_cast<double>(x - 1) / magTileScale[0];
cur_viewport[2] = static_cast<double>(x) / magTileScale[0];
}
if (y > 0 && y < num_iterations[1] - 1)
{
cur_viewport[1] -= y * (BORDER_PIXELS * 2.0) / tileSize[1];
cur_viewport[3] -= y * (BORDER_PIXELS * 2.0) / tileSize[1];
}
if (y == num_iterations[1] - 1)
{
cur_viewport[1] = static_cast<double>(y - 1) / magTileScale[1];
cur_viewport[3] = static_cast<double>(y) / magTileScale[1];
}
}
}
}
for (int y = 0; y < num_iterations[1]; y++)
{
for (int x = 0; x < num_iterations[0]; x++)
{
// setup the Window ivars
double* cur_viewport = &viewports[(num_iterations[1] * y + x) * 4];
this->Input->SetTileViewport(cur_viewport);
double *tvp = this->Input->GetTileViewport();
// for each renderer, setup camera
rc->InitTraversal(rsit);
for (int i = 0; i < numRenderers; ++i)
{
aren = rc->GetNextRenderer(rsit);
cam = aren->GetActiveCamera();
double *vp = aren->GetViewport();
double visVP[4];
visVP[0] = (vp[0] < tvp[0]) ? tvp[0] : vp[0];
visVP[0] = (visVP[0] > tvp[2]) ? tvp[2] : visVP[0];
visVP[1] = (vp[1] < tvp[1]) ? tvp[1] : vp[1];
visVP[1] = (visVP[1] > tvp[3]) ? tvp[3] : visVP[1];
visVP[2] = (vp[2] > tvp[2]) ? tvp[2] : vp[2];
visVP[2] = (visVP[2] < tvp[0]) ? tvp[0] : visVP[2];
visVP[3] = (vp[3] > tvp[3]) ? tvp[3] : vp[3];
visVP[3] = (visVP[3] < tvp[1]) ? tvp[1] : visVP[3];
// compute magnification
double mag = (visVP[3] - visVP[1])/(vp[3] - vp[1]);
// compute the delta
double deltax = (visVP[2] + visVP[0])/2.0 - (vp[2] + vp[0])/2.0;
double deltay = (visVP[3] + visVP[1])/2.0 - (vp[3] + vp[1])/2.0;
// scale by original window size
if (visVP[2] - visVP[0] > 0)
{
deltax = 2.0*deltax/(visVP[2] - visVP[0]);
}
if (visVP[3] - visVP[1] > 0)
{
deltay = 2.0*deltay/(visVP[3] - visVP[1]);
}
cam->SetWindowCenter(windowCenters[i*2]+deltax,windowCenters[i*2+1]+deltay);
//cam->SetViewAngle(atan(tan(viewAngles[i]*vtkMath::Pi()/360.0)*mag) //FIXME
cam->SetViewAngle(asin(sin(viewAngles[i]*vtkMath::Pi()/360.0)*mag)
* 360.0 / vtkMath::Pi());
cam->SetParallelScale(parallelScale[i]*mag);
}
// Shift 2d actors just before rendering
//this->Shift2DActors(size[0]*x, size[1]*y);
// now render the tile and get the data
if (this->ShouldRerender ||
num_iterations[0] > 1 || num_iterations[1] > 1)
{
// if interactor is present, trigger render through interactor. This
// allows for custom applications that provide interactors that
// customize rendering e.g. ParaView.
if (renWin->GetInteractor())
{
renWin->GetInteractor()->Render();
}
else
{
this->Input->Render();
}
}
this->Input->MakeCurrent();
int buffer = this->ReadFrontBuffer;
if (!this->Input->GetDoubleBuffer())
{
buffer = 1;
}
if (this->InputBufferType == VTK_RGB || this->InputBufferType == VTK_RGBA)
{
unsigned char *pixels, *pixels1, *outPtr;
if (this->InputBufferType == VTK_RGB)
{
pixels = this->Input->GetPixelData(
imageBounds[0], imageBounds[1], imageBounds[2], imageBounds[3], buffer);
}
else
{
pixels = renWin->GetRGBACharPixelData(
imageBounds[0], imageBounds[1], imageBounds[2], imageBounds[3], buffer);
}
pixels1 = pixels;
// now write the data to the output image
if (overlap_viewports)
{
int xpos = int(cur_viewport[0] * imageSize[0] + 0.5);
int ypos = int(cur_viewport[1] * imageSize[1] + 0.5);
outPtr = static_cast<unsigned char *>(
out->GetScalarPointer(xpos,ypos, 0));
// We skip padding pixels around internal borders.
int ncomp = out->GetNumberOfScalarComponents();
int start_x_offset = (x != 0)? BORDER_PIXELS : 0;
int end_x_offset = (x != num_iterations[0]-1 && x!=0) ? BORDER_PIXELS
: 0;
int start_y_offset = (y != 0)? BORDER_PIXELS : 0;
int end_y_offset = (y != num_iterations[1]-1)? BORDER_PIXELS : 0;
start_x_offset *= ncomp;
end_x_offset *= ncomp;
for (int idxY = 0; idxY < tileSize[1]; idxY++)
{
if (idxY >= start_y_offset && idxY < tileSize[1] - end_y_offset)
{
memcpy(outPtr + start_x_offset, pixels1 + start_x_offset,
inIncrY - (start_x_offset + end_x_offset));
}
outPtr += outIncrY;
pixels1 += inIncrY;
}
}
else
{
outPtr = static_cast<unsigned char *>(
out->GetScalarPointer(x * vpSize[0], y * vpSize[1], 0));
for (int idxY = 0; idxY < vpSize[1]; idxY++)
{
memcpy(outPtr, pixels1, inIncrY);
outPtr += outIncrY;
pixels1 += inIncrY;
}
}
// free the memory
delete [] pixels;
}
else
{ // VTK_ZBUFFER
float* pixels = renWin->GetZbufferData(
imageBounds[0], imageBounds[1], imageBounds[2], imageBounds[3]);
float* pixels1 = pixels;
// now write the data to the output image
float* outPtr = static_cast<float *>(
out->GetScalarPointer(x * vpSize[0], y * vpSize[1], 0));
for (int idxY = 0; idxY < vpSize[1]; idxY++)
{
memcpy(outPtr, pixels1, inIncrY * sizeof(float));
outPtr += outIncrY;
pixels1 += inIncrY;
}
// free the memory
delete [] pixels;
}
}
}
// restore settings
// for each renderer
rc->InitTraversal(rsit);
for (int i = 0; i < numRenderers; ++i)
{
aren = rc->GetNextRenderer(rsit);
// store the old view angle & set the new
cam = aren->GetActiveCamera();
aren->SetActiveCamera(cams[i]);
cams[i]->UnRegister(this);
cam->Delete();
}
delete [] viewAngles;
delete [] windowCenters;
delete [] parallelScale;
delete [] cams;
delete [] viewports;
// render each of the tiles required to fill this request
this->Input->SetTileScale(tileScale);
this->Input->SetTileViewport(0.0,0.0,1.0,1.0);
this->Input->GetSize();
// restore every 2d actors
//this->Restore2DActors();
}
//----------------------------------------------------------------------------
// On each tile we must subtract the origin of each actor to ensure
// it appears in the corrrect relative location
void vtkWindowToImageFilter::Restore2DActors()
{
vtkActor2D *actor;
vtkCoordinate *c1, *c2;
vtkCoordinate *n1, *n2;
int i;
//
for (this->StoredData->StoredActors->InitTraversal(), i=0;
(actor = this->StoredData->StoredActors->GetNextItem()); i++)
{
c1 = actor->GetPositionCoordinate();
c2 = actor->GetPosition2Coordinate();
n1 = vtkCoordinate::SafeDownCast(this->StoredData->Coord1s->GetItemAsObject(i));
n2 = vtkCoordinate::SafeDownCast(this->StoredData->Coord2s->GetItemAsObject(i));
c1->SetCoordinateSystem(n1->GetCoordinateSystem());
c1->SetReferenceCoordinate(n1->GetReferenceCoordinate());
c1->SetReferenceCoordinate(n1->GetReferenceCoordinate());
c1->SetValue(n1->GetValue());
c2->SetCoordinateSystem(n2->GetCoordinateSystem());
c2->SetReferenceCoordinate(n2->GetReferenceCoordinate());
c2->SetValue(n2->GetValue());
}
this->StoredData->Coord1s->RemoveAllItems();
this->StoredData->Coord2s->RemoveAllItems();
this->StoredData->StoredActors->RemoveAllItems();
}
//----------------------------------------------------------------------------
void vtkWindowToImageFilter::Rescale2DActors()
{
vtkActor2D *actor;
vtkProp *aProp;
vtkRenderer *aren;
vtkPropCollection *pc;
vtkRendererCollection *rc;
vtkCoordinate *c1, *c2;
vtkCoordinate *n1, *n2;
int *p1, *p2;
double d1[3], d2[3];
//
vtkRenderWindow *renWin = vtkRenderWindow::SafeDownCast(this->Input);
rc = renWin->GetRenderers();
for (rc->InitTraversal(); (aren = rc->GetNextItem()); )
{
pc = aren->GetViewProps();
if (pc)
{
for ( pc->InitTraversal(); (aProp = pc->GetNextProp()); )
{
actor = vtkActor2D::SafeDownCast((aProp));
if (actor)
{
// put the actor in our list for retrieval later
this->StoredData->StoredActors->AddItem(actor);
// Copy all existing coordinate stuff
n1 = actor->GetPositionCoordinate();
n2 = actor->GetPosition2Coordinate();
c1 = vtkCoordinate::New();
c2 = vtkCoordinate::New();
c1->SetCoordinateSystem(n1->GetCoordinateSystem());
c1->SetReferenceCoordinate(n1->GetReferenceCoordinate());
c1->SetReferenceCoordinate(n1->GetReferenceCoordinate());
c1->SetValue(n1->GetValue());
c2->SetCoordinateSystem(n2->GetCoordinateSystem());
c2->SetReferenceCoordinate(n2->GetReferenceCoordinate());
c2->SetValue(n2->GetValue());
this->StoredData->Coord1s->AddItem(c1);
this->StoredData->Coord2s->AddItem(c2);
c1->Delete();
c2->Delete();
// work out the position in new magnified pixels
p1 = n1->GetComputedDisplayValue(aren);
p2 = n2->GetComputedDisplayValue(aren);
d1[0] = p1[0]*this->Magnification;
d1[1] = p1[1]*this->Magnification;
d1[2] = 0.0;
d2[0] = p2[0]*this->Magnification;
d2[1] = p2[1]*this->Magnification;
d2[2] = 0.0;
this->StoredData->Coords1.push_back(
std::pair<int, int>(static_cast<int>(d1[0]), static_cast<int>(d1[1])) );
this->StoredData->Coords2.push_back(
std::pair<int, int>(static_cast<int>(d2[0]), static_cast<int>(d2[1])) );
// Make sure they have no dodgy offsets
n1->SetCoordinateSystemToDisplay();
n2->SetCoordinateSystemToDisplay();
n1->SetReferenceCoordinate(NULL);
n2->SetReferenceCoordinate(NULL);
n1->SetValue(d1[0], d1[1]);
n2->SetValue(d2[0], d2[1]);
//
}
}
}
}
}
//----------------------------------------------------------------------------
// On each tile we must subtract the origin of each actor to ensure
// it appears in the correct relative location
void vtkWindowToImageFilter::Shift2DActors(int x, int y)
{
vtkActor2D *actor;
vtkCoordinate *c1, *c2;
double d1[3], d2[3];
int i;
//
for (this->StoredData->StoredActors->InitTraversal(), i=0;
(actor = this->StoredData->StoredActors->GetNextItem()); i++)
{
c1 = actor->GetPositionCoordinate();
c2 = actor->GetPosition2Coordinate();
c1->GetValue(d1);
c2->GetValue(d2);
d1[0] = this->StoredData->Coords1[i].first - x;
d1[1] = this->StoredData->Coords1[i].second - y + 1;
d2[0] = this->StoredData->Coords2[i].first - x;
d2[1] = this->StoredData->Coords2[i].second - y + 1;
c1->SetValue(d1);
c2->SetValue(d2);
}
}
//----------------------------------------------------------------------------
int vtkWindowToImageFilter::FillOutputPortInformation(
int vtkNotUsed(port), vtkInformation* info)
{
// now add our info
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkImageData");
return 1;
}