vtkVisItRectilinearGrid.C 9.6 KB
Newer Older
1 2
/*****************************************************************************
*
3
* Copyright (c) 2000 - 2014, Lawrence Livermore National Security, LLC
4
* Produced at the Lawrence Livermore National Laboratory
5
* LLNL-CODE-442911
6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316
* All rights reserved.
*
* This file is  part of VisIt. For  details, see https://visit.llnl.gov/.  The
* full copyright notice is contained in the file COPYRIGHT located at the root
* of the VisIt distribution or at http://www.llnl.gov/visit/copyright.html.
*
* Redistribution  and  use  in  source  and  binary  forms,  with  or  without
* modification, are permitted provided that the following conditions are met:
*
*  - Redistributions of  source code must  retain the above  copyright notice,
*    this list of conditions and the disclaimer below.
*  - Redistributions in binary form must reproduce the above copyright notice,
*    this  list of  conditions  and  the  disclaimer (as noted below)  in  the
*    documentation and/or other materials provided with the distribution.
*  - Neither the name of  the LLNS/LLNL nor the names of  its contributors may
*    be used to endorse or promote products derived from this software without
*    specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT  HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR  IMPLIED WARRANTIES, INCLUDING,  BUT NOT  LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND  FITNESS FOR A PARTICULAR  PURPOSE
* ARE  DISCLAIMED. IN  NO EVENT  SHALL LAWRENCE  LIVERMORE NATIONAL  SECURITY,
* LLC, THE  U.S.  DEPARTMENT OF  ENERGY  OR  CONTRIBUTORS BE  LIABLE  FOR  ANY
* DIRECT,  INDIRECT,   INCIDENTAL,   SPECIAL,   EXEMPLARY,  OR   CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT  LIMITED TO, PROCUREMENT OF  SUBSTITUTE GOODS OR
* SERVICES; LOSS OF  USE, DATA, OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER
* CAUSED  AND  ON  ANY  THEORY  OF  LIABILITY,  WHETHER  IN  CONTRACT,  STRICT
* LIABILITY, OR TORT  (INCLUDING NEGLIGENCE OR OTHERWISE)  ARISING IN ANY  WAY
* OUT OF THE  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*****************************************************************************/

#include "vtkVisItRectilinearGrid.h"
#include <vtkObjectFactory.h>
#include "vtkCellData.h"
#include "vtkEmptyCell.h"
#include "vtkGenericCell.h"
#include "vtkLine.h"
#include "vtkMath.h"
#include "vtkPoints.h"
#include "vtkPixel.h"
#include "vtkVertex.h"
#include "vtkVoxel.h"

vtkStandardNewMacro(vtkVisItRectilinearGrid);


// ****************************************************************************
//  Method: vtkVisItRectilinearGrid::vtkVisItRectilinearGrid
//
//  Purpose:
//      Constructor for vtkVisItRectilinearGrid.  Deletes most of what the base 
//      class allocates by default, so it can be created on demand instead.
//
//  Programmer: Dave Bremer
//  Creation:   May 25, 2007
// ****************************************************************************

vtkVisItRectilinearGrid::vtkVisItRectilinearGrid()
{
    // Delete most of what the base class makes by default, and create it on demand.
    if (this->Vertex)
    {
        this->Vertex->Delete();
        this->Vertex = NULL;
    }
    if (this->Line)
    {
        this->Line->Delete();
        this->Line = NULL;
    }
    if (this->Pixel)
    {
        this->Pixel->Delete();
        this->Pixel = NULL;
    }
    if (this->Voxel)
    {
        this->Voxel->Delete();
        this->Voxel = NULL;
    }
}


// ****************************************************************************
//  Method: vtkVisItRectilinearGrid::~vtkVisItRectilinearGrid
//
//  Purpose:
//      Destructor for vtkVisItRectilinearGrid.  Unfortunately, I need to 
//      allocate some data members because ~vtkRectilinearGrid will segv
//      otherwise, when it deletes them.
//
//  Programmer: Dave Bremer
//  Creation:   May 25, 2007
//
// ****************************************************************************

vtkVisItRectilinearGrid::~vtkVisItRectilinearGrid()
{
    // The base class destructor expects all these classes to exist.  So I have
    // to instantiate them right before destruction.
    if (!this->Vertex)
    {
        this->Vertex = vtkVertex::New();
    }
    if (!this->Line)
    {
        this->Line = vtkLine::New();
    }
    if (!this->Pixel)
    {
        this->Pixel = vtkPixel::New();
    }
    if (!this->Voxel)
    {
        this->Voxel = vtkVoxel::New();
    }
}


// ****************************************************************************
//  Method: vtkVisItRectilinearGrid::GetCell
//
//  Purpose:
//      Reimplementation of vtkRectilinearGrid::GetCell, which allocates the
//      cells on demand.  This is exactly the same as the implementation of 
//      vtkRectilinearGrid::GetCell in VTK 5.0.0, except for formatting 
//      changes and a few lines for on-demand allocation.
//
//  Programmer: Dave Bremer
//  Creation:   May 25, 2007
//
//  Modifications:
//
//    Hank Childs, Fri Feb 15 11:56:28 PST 2008
//    Add a check in case a new cell type is added later.
//
// ****************************************************************************

vtkCell *
vtkVisItRectilinearGrid::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 NULL;
    
    case VTK_SINGLE_POINT: // cellId can only be = 0
        if (!this->Vertex)
        {
            this->Vertex = vtkVertex::New();
        }
    
        cell = this->Vertex;
        break;
    
    case VTK_X_LINE:
        if (!this->Line)
        {
            this->Line = vtkLine::New();
        }
        iMin = cellId;
        iMax = cellId + 1;
        cell = this->Line;
        break;
    
    case VTK_Y_LINE:
        if (!this->Line)
        {
            this->Line = vtkLine::New();
        }
        jMin = cellId;
        jMax = cellId + 1;
        cell = this->Line;
        break;
    
    case VTK_Z_LINE:
        if (!this->Line)
        {
            this->Line = vtkLine::New();
        }
        kMin = cellId;
        kMax = cellId + 1;
        cell = this->Line;
        break;
    
    case VTK_XY_PLANE:
        if (!this->Pixel)
        {
            this->Pixel = vtkPixel::New();
        }
        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:
        if (!this->Pixel)
        {
            this->Pixel = vtkPixel::New();
        }
        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:
        if (!this->Pixel)
        {
            this->Pixel = vtkPixel::New();
        }
        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:
        if (!this->Voxel)
        {
            this->Voxel = vtkVoxel::New();
        }
        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;
    }

    if (cell == NULL)
        return NULL;

    // 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;
}


// ****************************************************************************
//  Method: vtkVisItRectilinearGrid::FindAndGetCell
//
//  Purpose:
//      Reimplementation of vtkRectilinearGrid::FindAndGetCell.  This is
//      exactly the same as the implementation in vtk 5.0.0, except that I
//      call GetCell() instead of calling vtkRectilinearGrid::GetCell()
//
//  Programmer: Dave Bremer
//  Creation:   June 22, 2007
// ****************************************************************************
vtkCell *vtkVisItRectilinearGrid::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
  //
  vtkVoxel::InterpolationFunctions(pcoords,weights);
  //
  // Get the cell
  //
  cellId = loc[2] * (this->Dimensions[0]-1)*(this->Dimensions[1]-1) +
           loc[1] * (this->Dimensions[0]-1) + loc[0];

  return GetCell(cellId);
}