teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5994:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5994:  * documentation coming with Dive4Elements River for details.
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.artifacts.model;
sascha@3138: 
sascha@3138: import java.io.Serializable;
sascha@3138: 
felix@4334: /** A range from ... to .*/
sascha@3138: public class Range implements Serializable {
sascha@3138: 
felix@5636:     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@3401:     public Range(Range other) {
sascha@3401:         start = other.start;
sascha@3401:         end   = other.end;
sascha@3401:     }
sascha@3401: 
sascha@3138:     public Range(double start, double end) {
sascha@3138:         this.start = start;
sascha@3138:         this.end   = end;
sascha@3138:     }
sascha@3138: 
felix@6380:     public void setStart(double start) {
felix@6380:         this.start = start;
felix@6380:     }
felix@6380: 
sascha@3138:     public double getStart() {
sascha@3138:         return start;
sascha@3138:     }
sascha@3138: 
felix@6380: 
felix@6380:     public void setEnd(double end) {
felix@6380:         this.end = end;
felix@6380:     }
felix@6380: 
sascha@3138:     public double getEnd() {
sascha@3138:         return end;
sascha@3138:     }
sascha@3138: 
sascha@3743:     public boolean disjoint(double ostart, double oend) {
sascha@3743:         return start > oend || ostart > end;
sascha@3743:     }
sascha@3743: 
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: 
felix@4334:     /** True if start>x<end (+ some epsilon) . */
sascha@3138:     public boolean inside(double x) {
sascha@3138:         return x > start-EPSILON && x < end+EPSILON;
sascha@3138:     }
felix@6372: 
felix@6380:     public boolean contains(double x) {
felix@6380:         return inside(x);
felix@6380:     }
felix@6380: 
felix@6380: 
felix@6380:     /** Hash Code. */
felix@6372:     @Override
felix@6372:     public int hashCode() {
felix@6372:         return new Double(this.start).hashCode() ^
felix@6372:                new Double(this.end).hashCode();
felix@6372:     }
felix@6372: 
felix@6380: 
felix@6380:     /**
felix@6380:      * Compares start and end values with some epsilon.
felix@6380:      */
felix@6372:     @Override
felix@6372:     public boolean equals(Object otherRange) {
teichmann@6378:         if (otherRange instanceof Range) {
felix@6372:             Range oRange = (Range) otherRange;
felix@6372:             return
felix@6372:                 Math.abs(oRange.start - this.start) <= EPSILON
felix@6372:                 && Math.abs(oRange.end - this.end) <= EPSILON;
felix@6372:         }
felix@6372:         return false;
felix@6372:     }
felix@6380: 
felix@6380:     /** Returns clone with same start and end values. */
felix@6380:     @Override
felix@6380:     public Object clone() {
felix@6380:         return new Range(this.start, this.end);
felix@6380:     }
teichmann@6494: 
teichmann@6494:     public String toString() {
teichmann@6494:         return "[Range: start=" + start + " end=" + end + "]";
teichmann@6494:     }
sascha@3138: }
sascha@3138: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :