sascha@3138: package de.intevation.flys.artifacts.model;
sascha@3138: 
sascha@3138: import java.io.Serializable;
sascha@3138: 
sascha@3138: public class Range implements Serializable {
sascha@3138: 
sascha@3138:     public static final double EPSILON  = 1e-5;
sascha@3138: 
sascha@3138:     protected double start;
sascha@3138:     protected double end;
sascha@3138: 
sascha@3138:     public Range() {
sascha@3138:     }
sascha@3138: 
sascha@3138:     public Range(double start, double end) {
sascha@3138:         this.start = start;
sascha@3138:         this.end   = end;
sascha@3138:     }
sascha@3138: 
sascha@3138:     public double getStart() {
sascha@3138:         return start;
sascha@3138:     }
sascha@3138: 
sascha@3138:     public double getEnd() {
sascha@3138:         return end;
sascha@3138:     }
sascha@3138: 
sascha@3138:     public boolean disjoint(Range other) {
sascha@3138:         return start > other.end || other.start > end;
sascha@3138:     }
sascha@3138: 
sascha@3138:     public boolean intersects(Range other) {
sascha@3138:         return !disjoint(other);
sascha@3138:     }
sascha@3138: 
sascha@3138:     public void extend(Range other) {
sascha@3138:         if (other.start < start) start = other.start;
sascha@3138:         if (other.end   > end  ) end   = other.end;
sascha@3138:     }
sascha@3138: 
sascha@3138:     public boolean clip(Range other) {
sascha@3138:         if (disjoint(other)) return false;
sascha@3138: 
sascha@3138:         if (other.start > start) start = other.start;
sascha@3138:         if (other.end   < end  ) end   = other.end;
sascha@3138: 
sascha@3138:         return true;
sascha@3138:     }
sascha@3138: 
sascha@3138:     public boolean inside(double x) {
sascha@3138:         return x > start-EPSILON && x < end+EPSILON;
sascha@3138:     }
sascha@3138: }
sascha@3138: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :