package jalview.datamodel;

import java.awt.Color;

/**
 * Dummy contact matrix based on sequence distance
 * 
 * @author jprocter
 *
 */
public class ContactMatrixTest implements ContactMatrixI
{
  private int width = 0;

  public ContactMatrixTest(int width)
  {
    this.width = width;
  }
  @Override
  public ContactListI getContactList(final int column)
  {
    if (column<0 || column >= width)
    {
      return null;
    }
    return new ContactListI() {
      int p = column;
      @Override
      public Color getColorForScore(int column)
      {
        return jalview.util.ColorUtils.getGraduatedColour(Math.abs(column-p), 0, Color.white, width, Color.magenta);
      }
      @Override
      public Color getColorForRange(int from_column, int to_column)
      {
        return jalview.util.ColorUtils.getGraduatedColour(
                Math.abs(to_column + from_column - 2 * p) / 2, 0, Color.white, width,
                Color.magenta);
      }

      @Override
      public int getColumnWidth()
      {
        return 1;
      }
      @Override
      public int getContactHeight()
      {
        return width;

      }

      @Override
      public double getContactAt(int column)
      {
        return Math.abs(column - p);
      }
    };
  }

}