//
// VisADLineArray.java
//

/*
VisAD system for interactive analysis and visualization of numerical
data.  Copyright (C) 1996 - 2017 Bill Hibbard, Curtis Rueden, Tom
Rink, Dave Glowacki, Steve Emmerson, Tom Whittaker, Don Murray, and
Tommy Jasmin.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA
*/

package visad;

/**
   VisADLineArray stands in for j3d.LineArray
   and is Serializable.

*/
public class VisADLineArray extends VisADGeometryArray {

  /**
   * Merge an array of VisADLineArrays into a single VisADLineArray.
   * @param  arrays  array of VisADLineArrays (may be null)
   * @return a single VisADLineArray with all the info of arrays.
   *         returns null if input is null.
   */
  public static VisADLineArray merge(VisADLineArray[] arrays)
         throws VisADException {
    if (arrays == null || arrays.length == 0) return null;
    VisADLineArray array = new VisADLineArray();
    merge(arrays, array);
/*
    int n = arrays.length;
    int count = 0;
    boolean color_flag = (arrays[0].colors != null);
    for (int i=0; i max_length) max_length = lengths[i];
      }
    } // end for (int i=0; i= limit_length) {
      for (int i=0; i limit_length);
      }
    }
    */

    cs = null;
    rs = null;

    float[] lastcoord = null;
    byte[] lastcol = null;
    VisADLineArray array = new VisADLineArray();
    // worst case splits every line
    float[] coords = new float[3 * coordinates.length];
    int color_length = 0;
    byte[] cols = null;
    if (colors != null) {
      color_length = 3;
      cols = new byte[3 * colors.length];
      if (colors.length != coordinates.length) color_length = 4;
    }

    int ki = 0;
    int kj = 0;
    j = 0;
    for (int i=0; i<3*len; i+=6) {
      if (!test[i/3]) {
        coords[ki] = coordinates[i];
        coords[ki+1] = coordinates[i+1];
        coords[ki+2] = coordinates[i+2];
        coords[ki+3] = coordinates[i+3];
        coords[ki+4] = coordinates[i+4];
        coords[ki+5] = coordinates[i+5];
        ki += 6;
        if (color_length == 3) {
          cols[kj] = colors[j];
          cols[kj+1] = colors[j+1];
          cols[kj+2] = colors[j+2];
          cols[kj+3] = colors[j+3];
          cols[kj+4] = colors[j+4];
          cols[kj+5] = colors[j+5];
          kj += 6;
        }
        else if (color_length == 4) {
          cols[kj] = colors[j];
          cols[kj+1] = colors[j+1];
          cols[kj+2] = colors[j+2];
          cols[kj+3] = colors[j+3];
          cols[kj+4] = colors[j+4];
          cols[kj+5] = colors[j+5];
          cols[kj+6] = colors[j+6];
          cols[kj+7] = colors[j+7];
          kj += 8;
        }
      }
      else {
        any_split = true;
      }
      j += 2 * color_length;
    }

   //System.out.println("VisADLineArray.adjustSeam any_split = " + any_split);

    if (!any_split) {
      return this;
    }
    else {
      array.vertexCount = ki / 3;
      array.coordinates = new float[ki];
      System.arraycopy(coords, 0, array.coordinates, 0, ki);
      if (colors != null) {
        array.colors = new byte[kj];
        System.arraycopy(cols, 0, array.colors, 0, kj);
      }
      return array;
    }
  }

  public VisADGeometryArray removeMissing() {
    VisADLineArray array = new VisADLineArray();
    float[] coords = new float[coordinates.length];
    int color_length = 3;
    byte[] cols = null;
    if (colors != null) {
      cols = new byte[colors.length];
      if (colors.length != coordinates.length) color_length = 4;
    }
    int k = 0;
    int m = 0;
    int j = 0;
    boolean any_missing = false;
    for (int i=0; i