/** cat. */
  private void cat3D_4D_4D() {

    int length;
    int xDim, yDim;
    float[] buffer;
    int cFactor = 1;
    int i, j;
    float[] resols = new float[3];
    float[] origins = new float[3];
    FileInfoBase[] fileInfo = null;
    FileInfoDicom[] fileInfoDicom = null;
    int srcALength, srcBLength;

    try {
      fireProgressStateChanged(srcImage1.getImageName(), "Concatenating images ...");
      resols = new float[4];
      origins = new float[4];
      xDim = srcImage1.getExtents()[0];
      yDim = srcImage1.getExtents()[1];

      if (srcImage1.isColorImage()) {
        cFactor = 4;
      }

      length = cFactor * xDim * yDim;
      buffer = new float[length];

      int nImages;

      if (srcImage1.getNDims() > srcImage2.getNDims()) {
        nImages =
            (srcImage1.getExtents()[2] * srcImage1.getExtents()[3]) + srcImage2.getExtents()[2];

        for (i = 0;
            (i < (srcImage1.getExtents()[2] * srcImage1.getExtents()[3])) && !threadStopped;
            i++) {
          fireProgressStateChanged(Math.round((float) (i) / (nImages - 1) * 100));

          srcImage1.exportData(i * length, length, buffer);
          destImage.importData(i * length, buffer, false);
        }

        if (threadStopped) {
          buffer = null;
          finalize();

          return;
        }

        for (j = 0; (j < srcImage2.getExtents()[2]) && !threadStopped; j++) {
          fireProgressStateChanged(Math.round((float) (i + j) / (nImages - 1) * 100));

          srcImage2.exportData(j * length, length, buffer);
          destImage.importData((i + j) * length, buffer, false);
        }

        if (threadStopped) {
          buffer = null;
          finalize();

          return;
        }

        destImage.calcMinMax();
      } else {
        nImages =
            (srcImage2.getExtents()[2] * srcImage2.getExtents()[3]) + srcImage1.getExtents()[2];

        for (j = 0; (j < srcImage1.getExtents()[2]) && !threadStopped; j++) {
          fireProgressStateChanged(Math.round((float) (j) / (nImages - 1) * 100));

          srcImage1.exportData(j * length, length, buffer);
          destImage.importData(j * length, buffer, false);
        }

        if (threadStopped) {
          buffer = null;
          finalize();

          return;
        }

        for (i = 0;
            (i < (srcImage2.getExtents()[2] * srcImage2.getExtents()[3])) && !threadStopped;
            i++) {
          fireProgressStateChanged(Math.round((float) (i + j) / (nImages - 1) * 100));

          srcImage2.exportData(i * buffer.length, length, buffer);
          destImage.importData((i + j) * buffer.length, buffer, false);
        }

        if (threadStopped) {
          buffer = null;
          finalize();

          return;
        }

        destImage.calcMinMax();
      }
    } catch (IOException error) {
      buffer = null;
      destImage.disposeLocal(); // Clean up memory of result image
      destImage = null;
      errorCleanUp("Algorithm Concat. Images: Image(s) locked", true);

      return;
    } catch (OutOfMemoryError e) {
      buffer = null;
      destImage.disposeLocal(); // Clean up memory of result image
      destImage = null;
      errorCleanUp("Algorithm Concat. Images: Out of memory", true);

      return;
    }

    resols[0] = srcImage1.getFileInfo()[0].getResolutions()[0];
    resols[1] = srcImage1.getFileInfo()[0].getResolutions()[1];
    resols[2] = srcImage1.getFileInfo()[0].getResolutions()[2];
    resols[3] = srcImage1.getFileInfo()[0].getResolutions()[3];
    origins[0] = srcImage1.getFileInfo()[0].getOrigin()[0];
    origins[1] = srcImage1.getFileInfo()[0].getOrigin()[1];
    origins[2] = srcImage1.getFileInfo()[0].getOrigin()[2];
    origins[3] = srcImage1.getFileInfo()[0].getOrigin()[3];

    if ((srcImage1.getFileInfo()[0] instanceof FileInfoDicom)
        && (srcImage2.getFileInfo()[0] instanceof FileInfoDicom)) {
      fileInfoDicom = new FileInfoDicom[destImage.getExtents()[2] * destImage.getExtents()[3]];

      if (srcImage1.getNDims() > srcImage2.getNDims()) {
        srcALength = srcImage1.getExtents()[2] * srcImage1.getExtents()[3];

        for (i = 0; (i < srcALength) && !threadStopped; i++) {
          fileInfoDicom[i] = (FileInfoDicom) (((FileInfoDicom) srcImage1.getFileInfo()[i]).clone());
          fileInfoDicom[i].setOrigin(origins);
        }

        for (i = 0; (i < srcImage2.getExtents()[2]) && !threadStopped; i++) {
          fileInfoDicom[srcALength + i] =
              (FileInfoDicom) (((FileInfoDicom) srcImage2.getFileInfo()[i]).clone());
          fileInfoDicom[srcALength + i].setOrigin(origins);
        }
      } else {
        srcBLength = srcImage2.getExtents()[2] * srcImage2.getExtents()[3];

        for (i = 0; (i < srcImage1.getExtents()[2]) && !threadStopped; i++) {
          fileInfoDicom[i] = (FileInfoDicom) (((FileInfoDicom) srcImage1.getFileInfo()[i]).clone());
          fileInfoDicom[i].setOrigin(origins);
        }

        for (i = 0; (i < srcBLength) && !threadStopped; i++) {
          fileInfoDicom[srcImage1.getExtents()[2] + i] =
              (FileInfoDicom) (((FileInfoDicom) srcImage2.getFileInfo()[i]).clone());
          fileInfoDicom[srcImage1.getExtents()[2] + i].setOrigin(origins);
        }
      }

      destImage.setFileInfo(fileInfoDicom);
    } else {
      fileInfo = destImage.getFileInfo();

      for (i = 0;
          (i < (destImage.getExtents()[2] * destImage.getExtents()[3])) && !threadStopped;
          i++) {
        fileInfo[i].setModality(srcImage1.getFileInfo()[0].getModality());
        fileInfo[i].setFileDirectory(srcImage1.getFileInfo()[0].getFileDirectory());
        fileInfo[i].setEndianess(srcImage1.getFileInfo()[0].getEndianess());
        fileInfo[i].setUnitsOfMeasure(srcImage1.getFileInfo()[0].getUnitsOfMeasure());
        fileInfo[i].setResolutions(resols);
        fileInfo[i].setExtents(destImage.getExtents());
        fileInfo[i].setMax(destImage.getMax());
        fileInfo[i].setMin(destImage.getMin());
        fileInfo[i].setImageOrientation(srcImage1.getImageOrientation());
        fileInfo[i].setPixelPadValue(srcImage1.getFileInfo()[0].getPixelPadValue());
        fileInfo[i].setPhotometric(srcImage1.getFileInfo()[0].getPhotometric());
        fileInfo[i].setAxisOrientation(srcImage1.getAxisOrientation());
      }

      if (srcImage1.getFileInfo()[0] instanceof FileInfoImageXML) {

        if (srcImage1.getNDims() > srcImage2.getNDims()) {
          srcALength = srcImage1.getExtents()[2] * srcImage1.getExtents()[3];

          for (i = 0; (i < srcALength) && !threadStopped; i++) {

            if (((FileInfoImageXML) srcImage1.getFileInfo()[i]).getPSetHashtable() != null) {
              ((FileInfoImageXML) fileInfo[i])
                  .setPSetHashtable(
                      ((FileInfoImageXML) srcImage1.getFileInfo()[i]).getPSetHashtable());
            }
          }
        } else {

          for (i = 0; (i < srcImage1.getExtents()[2]) && !threadStopped; i++) {

            if (((FileInfoImageXML) srcImage1.getFileInfo()[i]).getPSetHashtable() != null) {
              ((FileInfoImageXML) fileInfo[i])
                  .setPSetHashtable(
                      ((FileInfoImageXML) srcImage1.getFileInfo()[i]).getPSetHashtable());
            }
          }
        }
      }

      if (srcImage2.getFileInfo()[0] instanceof FileInfoImageXML) {

        if (srcImage1.getNDims() > srcImage2.getNDims()) {
          srcALength = srcImage1.getExtents()[2] * srcImage1.getExtents()[3];

          for (i = 0; (i < srcImage2.getExtents()[2]) && !threadStopped; i++) {

            if (((FileInfoImageXML) srcImage2.getFileInfo()[i]).getPSetHashtable() != null) {
              ((FileInfoImageXML) fileInfo[srcALength + i])
                  .setPSetHashtable(
                      ((FileInfoImageXML) srcImage2.getFileInfo()[i]).getPSetHashtable());
            }
          }

        } else {
          srcBLength = srcImage2.getExtents()[2] * srcImage2.getExtents()[3];

          for (i = 0; (i < srcBLength) && !threadStopped; i++) {

            if (((FileInfoImageXML) srcImage2.getFileInfo()[i]).getPSetHashtable() != null) {
              ((FileInfoImageXML) fileInfo[srcImage1.getExtents()[2] + i])
                  .setPSetHashtable(
                      ((FileInfoImageXML) srcImage2.getFileInfo()[i]).getPSetHashtable());
            }
          }
        }
      }
    }

    if (threadStopped) {
      buffer = null;
      finalize();

      return;
    }

    setCompleted(true);
    fileInfo = null;
    fileInfoDicom = null;
  }
  /**
   * This function produces a new image that has been concatenated. Two 2D-images become one 3D
   * image.
   */
  private void cat2D_2D_3D() {

    int length;
    int xDim, yDim;
    int i;
    float[] buffer;
    int cFactor = 1;
    float[] resols = new float[3];
    FileInfoBase[] fileInfo = null;
    FileInfoDicom[] fileInfoDicom = null;

    try {
      resols = new float[3];
      xDim = srcImage1.getExtents()[0];
      yDim = srcImage1.getExtents()[1];

      if (srcImage1.isColorImage()) {
        cFactor = 4;
      }

      length = cFactor * xDim * yDim;
      buffer = new float[length];
      srcImage1.exportData(0, length, buffer);
      destImage.importData(0, buffer, false);
      srcImage2.exportData(0, length, buffer);
      destImage.importData(buffer.length, buffer, true);
    } catch (IOException error) {
      buffer = null;
      destImage.disposeLocal(); // Clean up memory of result image
      destImage = null;
      errorCleanUp("Algorithm Concat. Images: Image(s) locked", true);

      return;
    } catch (OutOfMemoryError e) {
      buffer = null;
      destImage.disposeLocal(); // Clean up memory of result image
      destImage = null;
      errorCleanUp("Algorithm Concat. Images: Out of memory", true);

      return;
    }

    resols[0] = srcImage1.getFileInfo()[0].getResolutions()[0];
    resols[1] = srcImage1.getFileInfo()[0].getResolutions()[1];
    resols[2] = 1;

    if ((srcImage1.getFileInfo()[0] instanceof FileInfoDicom)
        && (srcImage2.getFileInfo()[0] instanceof FileInfoDicom)) {
      fileInfoDicom = new FileInfoDicom[destImage.getExtents()[2]];
      fileInfoDicom[0] = (FileInfoDicom) (((FileInfoDicom) srcImage1.getFileInfo()[0]).clone());
      fileInfoDicom[1] = (FileInfoDicom) (((FileInfoDicom) srcImage2.getFileInfo()[0]).clone());
      destImage.setFileInfo(fileInfoDicom);
    } else {
      fileInfo = destImage.getFileInfo();

      for (i = 0; (i < destImage.getExtents()[2]) && !threadStopped; i++) {
        fileInfo[i].setModality(srcImage1.getFileInfo()[0].getModality());
        fileInfo[i].setFileDirectory(srcImage1.getFileInfo()[0].getFileDirectory());
        fileInfo[i].setEndianess(srcImage1.getFileInfo()[0].getEndianess());
        fileInfo[i].setUnitsOfMeasure(srcImage1.getFileInfo()[0].getUnitsOfMeasure());
        fileInfo[i].setResolutions(resols);
        fileInfo[i].setExtents(destImage.getExtents());
        fileInfo[i].setMax(destImage.getMax());
        fileInfo[i].setMin(destImage.getMin());
        fileInfo[i].setImageOrientation(srcImage1.getImageOrientation());
        fileInfo[i].setPixelPadValue(srcImage1.getFileInfo()[0].getPixelPadValue());
        fileInfo[i].setPhotometric(srcImage1.getFileInfo()[0].getPhotometric());
        fileInfo[i].setAxisOrientation(srcImage1.getAxisOrientation());
      }

      if (srcImage1.getFileInfo()[0] instanceof FileInfoImageXML) {

        if (((FileInfoImageXML) srcImage1.getFileInfo()[0]).getPSetHashtable() != null) {
          ((FileInfoImageXML) fileInfo[0])
              .setPSetHashtable(((FileInfoImageXML) srcImage1.getFileInfo()[0]).getPSetHashtable());
        }
      }

      if (srcImage2.getFileInfo()[0] instanceof FileInfoImageXML) {

        if (((FileInfoImageXML) srcImage2.getFileInfo()[0]).getPSetHashtable() != null) {
          ((FileInfoImageXML) fileInfo[1])
              .setPSetHashtable(((FileInfoImageXML) srcImage2.getFileInfo()[0]).getPSetHashtable());
        }
      }
    }

    if (threadStopped) {
      buffer = null;
      finalize();

      return;
    }

    setCompleted(true);

    fileInfo = null;
    fileInfoDicom = null;
  }