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vtkRectilinearGrid.cxx
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/*=========================================================================
Program: Visualization Toolkit
Module: vtkRectilinearGrid.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 "vtkRectilinearGrid.h"
#include "vtkCellData.h"
#include "vtkDoubleArray.h"
#include "vtkGenericCell.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkLine.h"
#include "vtkMath.h"
#include "vtkObjectFactory.h"
#include "vtkPixel.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkStreamingDemandDrivenPipeline.h"
#include "vtkUnsignedCharArray.h"
#include "vtkVertex.h"
#include "vtkVoxel.h"
vtkStandardNewMacro(vtkRectilinearGrid);
vtkCxxSetObjectMacro(vtkRectilinearGrid,XCoordinates,vtkDataArray);
vtkCxxSetObjectMacro(vtkRectilinearGrid,YCoordinates,vtkDataArray);
vtkCxxSetObjectMacro(vtkRectilinearGrid,ZCoordinates,vtkDataArray);
//----------------------------------------------------------------------------
vtkRectilinearGrid::vtkRectilinearGrid()
{
this->Vertex = vtkVertex::New();
this->Line = vtkLine::New();
this->Pixel = vtkPixel::New();
this->Voxel = vtkVoxel::New();
this->Dimensions[0] = 0;
this->Dimensions[1] = 0;
this->Dimensions[2] = 0;
int extent[6] = {0, -1, 0, -1, 0, -1};
memcpy(this->Extent, extent, 6*sizeof(int));
this->DataDescription = VTK_EMPTY;
this->Information->Set(vtkDataObject::DATA_EXTENT_TYPE(), VTK_3D_EXTENT);
this->Information->Set(vtkDataObject::DATA_EXTENT(), this->Extent, 6);
this->XCoordinates=vtkDoubleArray::New();
this->XCoordinates->SetNumberOfTuples(1);
this->XCoordinates->SetComponent(0, 0, 0.0);
this->YCoordinates=vtkDoubleArray::New();
this->YCoordinates->SetNumberOfTuples(1);
this->YCoordinates->SetComponent(0, 0, 0.0);
this->ZCoordinates=vtkDoubleArray::New();
this->ZCoordinates->SetNumberOfTuples(1);
this->ZCoordinates->SetComponent(0, 0, 0.0);
this->PointReturn[0] = 0.0;
this->PointReturn[1] = 0.0;
this->PointReturn[2] = 0.0;
}
//----------------------------------------------------------------------------
vtkRectilinearGrid::~vtkRectilinearGrid()
{
this->Cleanup();
this->Vertex->Delete();
this->Line->Delete();
this->Pixel->Delete();
this->Voxel->Delete();
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::Cleanup()
{
if ( this->XCoordinates )
{
this->XCoordinates->UnRegister(this);
this->XCoordinates = NULL;
}
if ( this->YCoordinates )
{
this->YCoordinates->UnRegister(this);
this->YCoordinates = NULL;
}
if ( this->ZCoordinates )
{
this->ZCoordinates->UnRegister(this);
this->ZCoordinates = NULL;
}
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::Initialize()
{
this->Superclass::Initialize();
if(this->Information)
{
this->SetDimensions(0,0,0);
}
this->Cleanup();
}
//----------------------------------------------------------------------------
// Copy the geometric and topological structure of an input rectilinear grid
// object.
void vtkRectilinearGrid::CopyStructure(vtkDataSet *ds)
{
vtkRectilinearGrid *rGrid=static_cast<vtkRectilinearGrid *>(ds);
int i;
this->Initialize();
for (i=0; i<3; i++)
{
this->Dimensions[i] = rGrid->Dimensions[i];
}
this->SetExtent(rGrid->GetExtent());
this->DataDescription = rGrid->DataDescription;
this->SetXCoordinates(rGrid->XCoordinates);
this->SetYCoordinates(rGrid->YCoordinates);
this->SetZCoordinates(rGrid->ZCoordinates);
}
//----------------------------------------------------------------------------
vtkCell *vtkRectilinearGrid::GetCell(vtkIdType cellId)
{
vtkCell *cell = NULL;
vtkIdType idx, npts;
int loc[3];
int iMin, iMax, jMin, jMax, kMin, kMax;
int d01 = this->Dimensions[0]*this->Dimensions[1];
double x[3];
iMin = iMax = jMin = jMax = kMin = kMax = 0;
switch (this->DataDescription)
{
case VTK_EMPTY:
//return this->EmptyCell;
return NULL;
case VTK_SINGLE_POINT: // cellId can only be = 0
cell = this->Vertex;
break;
case VTK_X_LINE:
iMin = cellId;
iMax = cellId + 1;
cell = this->Line;
break;
case VTK_Y_LINE:
jMin = cellId;
jMax = cellId + 1;
cell = this->Line;
break;
case VTK_Z_LINE:
kMin = cellId;
kMax = cellId + 1;
cell = this->Line;
break;
case VTK_XY_PLANE:
iMin = cellId % (this->Dimensions[0]-1);
iMax = iMin + 1;
jMin = cellId / (this->Dimensions[0]-1);
jMax = jMin + 1;
cell = this->Pixel;
break;
case VTK_YZ_PLANE:
jMin = cellId % (this->Dimensions[1]-1);
jMax = jMin + 1;
kMin = cellId / (this->Dimensions[1]-1);
kMax = kMin + 1;
cell = this->Pixel;
break;
case VTK_XZ_PLANE:
iMin = cellId % (this->Dimensions[0]-1);
iMax = iMin + 1;
kMin = cellId / (this->Dimensions[0]-1);
kMax = kMin + 1;
cell = this->Pixel;
break;
case VTK_XYZ_GRID:
iMin = cellId % (this->Dimensions[0] - 1);
iMax = iMin + 1;
jMin = (cellId / (this->Dimensions[0] - 1)) % (this->Dimensions[1] - 1);
jMax = jMin + 1;
kMin = cellId / ((this->Dimensions[0] - 1) * (this->Dimensions[1] - 1));
kMax = kMin + 1;
cell = this->Voxel;
break;
}
// Extract point coordinates and point ids
for (npts=0,loc[2]=kMin; loc[2]<=kMax; loc[2]++)
{
x[2] = this->ZCoordinates->GetComponent(loc[2], 0);
for (loc[1]=jMin; loc[1]<=jMax; loc[1]++)
{
x[1] = this->YCoordinates->GetComponent(loc[1], 0);
for (loc[0]=iMin; loc[0]<=iMax; loc[0]++)
{
x[0] = this->XCoordinates->GetComponent(loc[0], 0);
idx = loc[0] + loc[1]*this->Dimensions[0] + loc[2]*d01;
cell->PointIds->SetId(npts,idx);
cell->Points->SetPoint(npts++,x);
}
}
}
return cell;
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::GetCell(vtkIdType cellId, vtkGenericCell *cell)
{
vtkIdType idx, npts;
int loc[3];
int iMin, iMax, jMin, jMax, kMin, kMax;
int d01 = this->Dimensions[0]*this->Dimensions[1];
double x[3];
iMin = iMax = jMin = jMax = kMin = kMax = 0;
switch (this->DataDescription)
{
case VTK_EMPTY:
cell->SetCellTypeToEmptyCell();
break;
case VTK_SINGLE_POINT: // cellId can only be = 0
cell->SetCellTypeToVertex();
break;
case VTK_X_LINE:
iMin = cellId;
iMax = cellId + 1;
cell->SetCellTypeToLine();
break;
case VTK_Y_LINE:
jMin = cellId;
jMax = cellId + 1;
cell->SetCellTypeToLine();
break;
case VTK_Z_LINE:
kMin = cellId;
kMax = cellId + 1;
cell->SetCellTypeToLine();
break;
case VTK_XY_PLANE:
iMin = cellId % (this->Dimensions[0]-1);
iMax = iMin + 1;
jMin = cellId / (this->Dimensions[0]-1);
jMax = jMin + 1;
cell->SetCellTypeToPixel();
break;
case VTK_YZ_PLANE:
jMin = cellId % (this->Dimensions[1]-1);
jMax = jMin + 1;
kMin = cellId / (this->Dimensions[1]-1);
kMax = kMin + 1;
cell->SetCellTypeToPixel();
break;
case VTK_XZ_PLANE:
iMin = cellId % (this->Dimensions[0]-1);
iMax = iMin + 1;
kMin = cellId / (this->Dimensions[0]-1);
kMax = kMin + 1;
cell->SetCellTypeToPixel();
break;
case VTK_XYZ_GRID:
iMin = cellId % (this->Dimensions[0] - 1);
iMax = iMin + 1;
jMin = (cellId / (this->Dimensions[0] - 1)) % (this->Dimensions[1] - 1);
jMax = jMin + 1;
kMin = cellId / ((this->Dimensions[0] - 1) * (this->Dimensions[1] - 1));
kMax = kMin + 1;
cell->SetCellTypeToVoxel();
break;
}
// Extract point coordinates and point ids
for (npts=0,loc[2]=kMin; loc[2]<=kMax; loc[2]++)
{
x[2] = this->ZCoordinates->GetComponent(loc[2], 0);
for (loc[1]=jMin; loc[1]<=jMax; loc[1]++)
{
x[1] = this->YCoordinates->GetComponent(loc[1], 0);
for (loc[0]=iMin; loc[0]<=iMax; loc[0]++)
{
x[0] = this->XCoordinates->GetComponent(loc[0], 0);
idx = loc[0] + loc[1]*this->Dimensions[0] + loc[2]*d01;
cell->PointIds->SetId(npts,idx);
cell->Points->SetPoint(npts++,x);
}
}
}
}
//----------------------------------------------------------------------------
// Fast implementation of GetCellBounds(). Bounds are calculated without
// constructing a cell.
void vtkRectilinearGrid::GetCellBounds(vtkIdType cellId, double bounds[6])
{
int loc[3];
int iMin, iMax, jMin, jMax, kMin, kMax;
double x[3];
iMin = iMax = jMin = jMax = kMin = kMax = 0;
switch (this->DataDescription)
{
case VTK_EMPTY:
return;
case VTK_SINGLE_POINT: // cellId can only be = 0
break;
case VTK_X_LINE:
iMin = cellId;
iMax = cellId + 1;
break;
case VTK_Y_LINE:
jMin = cellId;
jMax = cellId + 1;
break;
case VTK_Z_LINE:
kMin = cellId;
kMax = cellId + 1;
break;
case VTK_XY_PLANE:
iMin = cellId % (this->Dimensions[0]-1);
iMax = iMin + 1;
jMin = cellId / (this->Dimensions[0]-1);
jMax = jMin + 1;
break;
case VTK_YZ_PLANE:
jMin = cellId % (this->Dimensions[1]-1);
jMax = jMin + 1;
kMin = cellId / (this->Dimensions[1]-1);
kMax = kMin + 1;
break;
case VTK_XZ_PLANE:
iMin = cellId % (this->Dimensions[0]-1);
iMax = iMin + 1;
kMin = cellId / (this->Dimensions[0]-1);
kMax = kMin + 1;
break;
case VTK_XYZ_GRID:
iMin = cellId % (this->Dimensions[0] - 1);
iMax = iMin + 1;
jMin = (cellId / (this->Dimensions[0] - 1)) % (this->Dimensions[1] - 1);
jMax = jMin + 1;
kMin = cellId / ((this->Dimensions[0] - 1) * (this->Dimensions[1] - 1));
kMax = kMin + 1;
break;
}
// carefully compute the bounds
if (kMax >= kMin && jMax >= jMin && iMax >= iMin)
{
bounds[0] = bounds[2] = bounds[4] = VTK_DOUBLE_MAX;
bounds[1] = bounds[3] = bounds[5] = -VTK_DOUBLE_MAX;
// Extract point coordinates
for (loc[2]=kMin; loc[2]<=kMax; loc[2]++)
{
x[2] = this->ZCoordinates->GetComponent(loc[2], 0);
bounds[4] = (x[2] < bounds[4] ? x[2] : bounds[4]);
bounds[5] = (x[2] > bounds[5] ? x[2] : bounds[5]);
}
for (loc[1]=jMin; loc[1]<=jMax; loc[1]++)
{
x[1] = this->YCoordinates->GetComponent(loc[1], 0);
bounds[2] = (x[1] < bounds[2] ? x[1] : bounds[2]);
bounds[3] = (x[1] > bounds[3] ? x[1] : bounds[3]);
}
for (loc[0]=iMin; loc[0]<=iMax; loc[0]++)
{
x[0] = this->XCoordinates->GetComponent(loc[0], 0);
bounds[0] = (x[0] < bounds[0] ? x[0] : bounds[0]);
bounds[1] = (x[0] > bounds[1] ? x[0] : bounds[1]);
}
}
else
{
vtkMath::UninitializeBounds(bounds);
}
}
//----------------------------------------------------------------------------
double *vtkRectilinearGrid::GetPoint(vtkIdType ptId)
{
int loc[3];
switch (this->DataDescription)
{
case VTK_EMPTY:
this->PointReturn[0] = 0.0;
this->PointReturn[1] = 0.0;
this->PointReturn[2] = 0.0;
vtkErrorMacro("Requesting a point from an empty data set.");
return this->PointReturn;
case VTK_SINGLE_POINT:
loc[0] = loc[1] = loc[2] = 0;
break;
case VTK_X_LINE:
loc[1] = loc[2] = 0;
loc[0] = ptId;
break;
case VTK_Y_LINE:
loc[0] = loc[2] = 0;
loc[1] = ptId;
break;
case VTK_Z_LINE:
loc[0] = loc[1] = 0;
loc[2] = ptId;
break;
case VTK_XY_PLANE:
loc[2] = 0;
loc[0] = ptId % this->Dimensions[0];
loc[1] = ptId / this->Dimensions[0];
break;
case VTK_YZ_PLANE:
loc[0] = 0;
loc[1] = ptId % this->Dimensions[1];
loc[2] = ptId / this->Dimensions[1];
break;
case VTK_XZ_PLANE:
loc[1] = 0;
loc[0] = ptId % this->Dimensions[0];
loc[2] = ptId / this->Dimensions[0];
break;
case VTK_XYZ_GRID:
loc[0] = ptId % this->Dimensions[0];
loc[1] = (ptId / this->Dimensions[0]) % this->Dimensions[1];
loc[2] = ptId / (this->Dimensions[0]*this->Dimensions[1]);
break;
default:
vtkErrorMacro( << "Unexpected value for DataDescription ("
<< this->DataDescription
<< ") in vtkRectilinearGrid::GetPoint" );
loc[0] = loc[1] = loc[2] = 0;
break;
}
this->PointReturn[0] = this->XCoordinates->GetComponent(loc[0], 0);
this->PointReturn[1] = this->YCoordinates->GetComponent(loc[1], 0);
this->PointReturn[2] = this->ZCoordinates->GetComponent(loc[2], 0);
return this->PointReturn;
}
void vtkRectilinearGrid::GetPoint(vtkIdType ptId, double x[3])
{
int loc[3];
switch (this->DataDescription)
{
case VTK_EMPTY:
vtkErrorMacro("Requesting a point from an empty data set.");
x[0] = x[1] = x[2] = 0.0;
return;
case VTK_SINGLE_POINT:
loc[0] = loc[1] = loc[2] = 0;
break;
case VTK_X_LINE:
loc[1] = loc[2] = 0;
loc[0] = ptId;
break;
case VTK_Y_LINE:
loc[0] = loc[2] = 0;
loc[1] = ptId;
break;
case VTK_Z_LINE:
loc[0] = loc[1] = 0;
loc[2] = ptId;
break;
case VTK_XY_PLANE:
loc[2] = 0;
loc[0] = ptId % this->Dimensions[0];
loc[1] = ptId / this->Dimensions[0];
break;
case VTK_YZ_PLANE:
loc[0] = 0;
loc[1] = ptId % this->Dimensions[1];
loc[2] = ptId / this->Dimensions[1];
break;
case VTK_XZ_PLANE:
loc[1] = 0;
loc[0] = ptId % this->Dimensions[0];
loc[2] = ptId / this->Dimensions[0];
break;
case VTK_XYZ_GRID:
loc[0] = ptId % this->Dimensions[0];
loc[1] = (ptId / this->Dimensions[0]) % this->Dimensions[1];
loc[2] = ptId / (this->Dimensions[0]*this->Dimensions[1]);
break;
default:
vtkErrorMacro( << "Unexpected value for DataDescription ("
<< this->DataDescription
<< ") in vtkRectilinearGrid::GetPoint" );
loc[0] = loc[1] = loc[2] = 0;
break;
}
x[0] = this->XCoordinates->GetComponent(loc[0], 0);
x[1] = this->YCoordinates->GetComponent(loc[1], 0);
x[2] = this->ZCoordinates->GetComponent(loc[2], 0);
}
//----------------------------------------------------------------------------
vtkIdType vtkRectilinearGrid::FindPoint(double x[3])
{
int i, j, loc[3];
double xPrev, xNext;
vtkDataArray *scalars[3];
scalars[0] = this->XCoordinates;
scalars[1] = this->YCoordinates;
scalars[2] = this->ZCoordinates;
//
// Find coordinates in x-y-z direction
//
for ( j=0; j < 3; j++ )
{
loc[j] = 0;
xPrev = scalars[j]->GetComponent(0, 0);
xNext = scalars[j]->GetComponent(scalars[j]->GetNumberOfTuples()-1, 0);
if ( x[j] < xPrev || x[j] > xNext )
{
return -1;
}
for (i=1; i < scalars[j]->GetNumberOfTuples(); i++)
{
xNext = scalars[j]->GetComponent(i, 0);
if ( x[j] >= xPrev && x[j] <= xNext )
{
if ( (x[j]-xPrev) < (xNext-x[j]) )
{
loc[j] = i-1;
}
else
{
loc[j] = i;
}
}
xPrev = xNext;
}
}
//
// From this location get the point id
//
return this->ComputePointId(loc);
}
vtkIdType vtkRectilinearGrid::FindCell(double x[3], vtkCell *vtkNotUsed(cell),
vtkGenericCell *vtkNotUsed(gencell),
vtkIdType vtkNotUsed(cellId),
double vtkNotUsed(tol2),
int& subId, double pcoords[3],
double *weights)
{
return this->FindCell(x, static_cast<vtkCell *>(NULL), 0, 0.0, subId,
pcoords, weights );
}
//----------------------------------------------------------------------------
vtkIdType vtkRectilinearGrid::FindCell(double x[3], vtkCell *vtkNotUsed(cell),
vtkIdType vtkNotUsed(cellId),
double vtkNotUsed(tol2),
int& subId, double pcoords[3],
double *weights)
{
int loc[3];
if ( this->ComputeStructuredCoordinates(x, loc, pcoords) == 0 )
{
return -1;
}
this->Voxel->InterpolationFunctions(pcoords,weights);
//
// From this location get the cell id
//
subId = 0;
return this->ComputeCellId(loc);
}
//----------------------------------------------------------------------------
vtkCell *vtkRectilinearGrid::FindAndGetCell(double x[3],
vtkCell *vtkNotUsed(cell),
vtkIdType vtkNotUsed(cellId),
double vtkNotUsed(tol2),
int& subId,
double pcoords[3], double *weights)
{
int loc[3];
vtkIdType cellId;
subId = 0;
if ( this->ComputeStructuredCoordinates(x, loc, pcoords) == 0 )
{
return NULL;
}
//
// Get the parametric coordinates and weights for interpolation
//
this->Voxel->InterpolationFunctions(pcoords,weights);
//
// Get the cell
//
cellId = this->ComputeCellId(loc);
return vtkRectilinearGrid::GetCell(cellId);
}
//----------------------------------------------------------------------------
int vtkRectilinearGrid::GetCellType(vtkIdType vtkNotUsed(cellId))
{
switch (this->DataDescription)
{
case VTK_EMPTY:
return VTK_EMPTY_CELL;
case VTK_SINGLE_POINT:
return VTK_VERTEX;
case VTK_X_LINE: case VTK_Y_LINE: case VTK_Z_LINE:
return VTK_LINE;
case VTK_XY_PLANE: case VTK_YZ_PLANE: case VTK_XZ_PLANE:
return VTK_PIXEL;
case VTK_XYZ_GRID:
return VTK_VOXEL;
default:
vtkErrorMacro(<<"Bad data description!");
return VTK_EMPTY_CELL;
}
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::ComputeBounds()
{
double tmp;
if (this->XCoordinates == NULL || this->YCoordinates == NULL ||
this->ZCoordinates == NULL)
{
vtkMath::UninitializeBounds(this->Bounds);
return;
}
if ( this->XCoordinates->GetNumberOfTuples() == 0 ||
this->YCoordinates->GetNumberOfTuples() == 0 ||
this->ZCoordinates->GetNumberOfTuples() == 0 )
{
vtkMath::UninitializeBounds(this->Bounds);
return;
}
this->Bounds[0] = this->XCoordinates->GetComponent(0, 0);
this->Bounds[2] = this->YCoordinates->GetComponent(0, 0);
this->Bounds[4] = this->ZCoordinates->GetComponent(0, 0);
this->Bounds[1] = this->XCoordinates->GetComponent(
this->XCoordinates->GetNumberOfTuples()-1, 0);
this->Bounds[3] = this->YCoordinates->GetComponent(
this->YCoordinates->GetNumberOfTuples()-1, 0);
this->Bounds[5] = this->ZCoordinates->GetComponent(
this->ZCoordinates->GetNumberOfTuples()-1, 0);
// ensure that the bounds are increasing
for (int i = 0; i < 5; i += 2)
{
if (this->Bounds[i + 1] < this->Bounds[i])
{
tmp = this->Bounds[i + 1];
this->Bounds[i + 1] = this->Bounds[i];
this->Bounds[i] = tmp;
}
}
}
//----------------------------------------------------------------------------
// Set dimensions of rectilinear grid dataset.
void vtkRectilinearGrid::SetDimensions(int i, int j, int k)
{
this->SetExtent(0, i-1, 0, j-1, 0, k-1);
}
//----------------------------------------------------------------------------
// Set dimensions of rectilinear grid dataset.
void vtkRectilinearGrid::SetDimensions(int dim[3])
{
this->SetExtent(0, dim[0]-1, 0, dim[1]-1, 0, dim[2]-1);
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::SetExtent(int extent[6])
{
int description;
description = vtkStructuredData::SetExtent(extent, this->Extent);
if ( description < 0 ) //improperly specified
{
vtkErrorMacro (<< "Bad Extent, retaining previous values");
}
if (description == VTK_UNCHANGED)
{
return;
}
this->DataDescription = description;
this->Modified();
this->Dimensions[0] = extent[1] - extent[0] + 1;
this->Dimensions[1] = extent[3] - extent[2] + 1;
this->Dimensions[2] = extent[5] - extent[4] + 1;
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::SetExtent(int xMin, int xMax, int yMin, int yMax,
int zMin, int zMax)
{
int extent[6];
extent[0] = xMin; extent[1] = xMax;
extent[2] = yMin; extent[3] = yMax;
extent[4] = zMin; extent[5] = zMax;
this->SetExtent(extent);
}
//----------------------------------------------------------------------------
// Convenience function computes the structured coordinates for a point x[3].
// The cell is specified by the array ijk[3], and the parametric coordinates
// in the cell are specified with pcoords[3]. The function returns a 0 if the
// point x is outside of the grid, and a 1 if inside the grid.
int vtkRectilinearGrid::ComputeStructuredCoordinates(double x[3], int ijk[3],
double pcoords[3])
{
int i, j;
double xPrev, xNext, tmp;
vtkDataArray *scalars[3];
scalars[0] = this->XCoordinates;
scalars[1] = this->YCoordinates;
scalars[2] = this->ZCoordinates;
//
// Find locations in x-y-z direction
//
ijk[0] = ijk[1] = ijk[2] = 0;
pcoords[0] = pcoords[1] = pcoords[2] = 0.0;
for ( j=0; j < 3; j++ )
{
xPrev = scalars[j]->GetComponent(0, 0);
xNext = scalars[j]->GetComponent(scalars[j]->GetNumberOfTuples()-1, 0);
if (xNext < xPrev)
{
tmp = xNext;
xNext = xPrev;
xPrev = tmp;
}
if ( x[j] < xPrev || x[j] > xNext )
{
return 0;
}
if (x[j] == xNext && this->Dimensions[j] != 1)
{
return 0;
}
for (i=1; i < scalars[j]->GetNumberOfTuples(); i++)
{
xNext = scalars[j]->GetComponent(i, 0);
if ( x[j] >= xPrev && x[j] < xNext )
{
ijk[j] = i - 1;
pcoords[j] = (x[j]-xPrev) / (xNext-xPrev);
break;
}
else if ( x[j] == xNext )
{
ijk[j] = i - 1;
pcoords[j] = 1.0;
break;
}
xPrev = xNext;
}
}
return 1;
}
//----------------------------------------------------------------------------
unsigned long vtkRectilinearGrid::GetActualMemorySize()
{
unsigned long size=this->vtkDataSet::GetActualMemorySize();
if ( this->XCoordinates )
{
size += this->XCoordinates->GetActualMemorySize();
}
if ( this->YCoordinates )
{
size += this->YCoordinates->GetActualMemorySize();
}
if ( this->ZCoordinates )
{
size += this->ZCoordinates->GetActualMemorySize();
}
return size;
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::GetCellNeighbors(vtkIdType cellId, vtkIdList *ptIds,
vtkIdList *cellIds)
{
int numPtIds=ptIds->GetNumberOfIds();
// Use special methods for speed
switch (numPtIds)
{
case 0:
cellIds->Reset();
return;
case 1: case 2: case 4: //vertex, edge, face neighbors
vtkStructuredData::GetCellNeighbors(cellId, ptIds,
cellIds, this->Dimensions);
break;
default:
this->vtkDataSet::GetCellNeighbors(cellId, ptIds, cellIds);
}
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::ShallowCopy(vtkDataObject *dataObject)
{
vtkRectilinearGrid *grid = vtkRectilinearGrid::SafeDownCast(dataObject);
if ( grid != NULL )
{
this->SetDimensions(grid->GetDimensions());
memcpy(this->Extent, grid->GetExtent(), 6*sizeof(int));
this->DataDescription = grid->DataDescription;
this->SetXCoordinates(grid->GetXCoordinates());
this->SetYCoordinates(grid->GetYCoordinates());
this->SetZCoordinates(grid->GetZCoordinates());
}
// Do superclass
this->vtkDataSet::ShallowCopy(dataObject);
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::DeepCopy(vtkDataObject *dataObject)
{
vtkRectilinearGrid *grid = vtkRectilinearGrid::SafeDownCast(dataObject);
if ( grid != NULL )
{
vtkDoubleArray *s;
this->SetDimensions(grid->GetDimensions());
memcpy(this->Extent, grid->GetExtent(), 6*sizeof(int));
this->DataDescription = grid->DataDescription;
s = vtkDoubleArray::New();
s->DeepCopy(grid->GetXCoordinates());
this->SetXCoordinates(s);
s->Delete();
s = vtkDoubleArray::New();
s->DeepCopy(grid->GetYCoordinates());
this->SetYCoordinates(s);
s->Delete();
s = vtkDoubleArray::New();
s->DeepCopy(grid->GetZCoordinates());
this->SetZCoordinates(s);
s->Delete();
}
// Do superclass
this->vtkDataSet::DeepCopy(dataObject);
}
//----------------------------------------------------------------------------
void vtkRectilinearGrid::Crop()
{
int i, j, k;
// What we want.
int uExt[6];
// What we have.
int ext[6];
const int* extent = this->Extent;
int updateExtent[6] = {0,-1,0,-1,0,-1};
this->GetUpdateExtent(updateExtent);
// If the update extent is larger than the extent,
// we cannot do anything about it here.
for (i = 0; i < 3; ++i)
{
uExt[i*2] = updateExtent[i*2];
ext[i*2] = extent[i*2];
if (uExt[i*2] < ext[i*2])
{
uExt[i*2] = ext[i*2];
}
uExt[i*2+1] = updateExtent[i*2+1];
ext[i*2+1] = extent[i*2+1];
if (uExt[i*2+1] > ext[i*2+1])
{
uExt[i*2+1] = ext[i*2+1];
}
}
// If extents already match, then we need to do nothing.
if (ext[0] == uExt[0] && ext[1] == uExt[1]
&& ext[2] == uExt[2] && ext[3] == uExt[3]
&& ext[4] == uExt[4] && ext[5] == uExt[5])
{
return;
}
else
{
vtkRectilinearGrid *newGrid;
vtkPointData *inPD, *outPD;
vtkCellData *inCD, *outCD;
int outSize, jOffset, kOffset;
vtkIdType idx, newId;
int inInc1, inInc2;
vtkDataArray *coords, *newCoords;