package jalview.datamodel.annotations;

import java.awt.Color;
import java.util.List;
import java.util.Map;

public interface AnnotationColouringI
{
  /**
   * Return the colour associated with this value
   * 
   * @param val
   * @return
   */
  public Color valueToColour(float val);

  /**
   * Given two values, val1 and val2, returns a list of (float,Color) pairs (as
   * Map.Entry objects). The float is a proportional distance (should start with
   * 0 and end with 1) and the Color is the color change from that point.
   * 
   * @param val1
   * @param val2
   * @return
   */
  public List<Map.Entry<Float, Color>> rangeColours(float val1, float val2);
}