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.exports;
christian@3242: 
christian@3242: import org.jfree.chart.axis.ValueAxis;
tom@8316: import org.jfree.chart.axis.LogarithmicAxis;
christian@3242: 
sascha@3257: /** Two Ranges that span a rectangular area. */
sascha@3257: public class ChartArea {
tom@8316:     protected double xLower;
tom@8316:     protected double xUpper;
tom@8316:     protected double xLength;
tom@8316:     protected double yLower;
tom@8316:     protected double yUpper;
tom@8316:     protected double yLength;
tom@8316:     protected boolean xIsLog;
tom@8316:     protected boolean yIsLog;
christian@3242: 
sascha@3257:     public ChartArea(ValueAxis axisX, ValueAxis axisY) {
tom@8316:         this.xLower = axisX.getRange().getLowerBound();
tom@8316:         this.xUpper = axisX.getRange().getUpperBound();
tom@8316:         this.xLength= axisX.getRange().getLength();
tom@8316:         this.yLower = axisY.getRange().getLowerBound();
tom@8316:         this.yUpper = axisY.getRange().getUpperBound();
tom@8316:         this.yLength= axisY.getRange().getLength();
tom@8316:         this.xIsLog = axisX instanceof LogarithmicAxis;
tom@8316:         this.yIsLog = axisY instanceof LogarithmicAxis;
sascha@3257:     }
christian@3242: 
sascha@3257:     public double ofLeft(double percent) {
tom@8316:         if (xIsLog) {
tom@8316:             return Math.pow(10,
tom@8316:                 Math.log10(xLower)
tom@8316:                 + Math.log10(xUpper / xLower) * percent
tom@8316:             );
tom@8316:         }
tom@8316:         return xLower + xLength * percent;
christian@3242:     }
sascha@3257: 
sascha@3257:     public double ofRight(double percent) {
tom@8316:         if (xIsLog) {
tom@8316:             return Math.pow(10,
tom@8316:                 Math.log10(xUpper)
tom@8316:                 - Math.log10(xUpper / xLower) * percent
tom@8316:             );
tom@8316:         }
tom@8316:         return xUpper - xLength * percent;
sascha@3257:     }
sascha@3257: 
sascha@3257:     public double ofGround(double percent) {
tom@8316:         if (yIsLog) {
tom@8316:             return Math.pow(10,
tom@8316:                 Math.log10(yLower)
tom@8316:                 + Math.log10(yUpper / yLower) * percent
tom@8316:             );
tom@8316:         }
tom@8316:         return yLower + yLength * percent;
sascha@3257:     }
sascha@3257: 
sascha@3257:     public double atTop() {
tom@8316:         return yUpper;
sascha@3257:     }
sascha@3257: 
sascha@3257:     public double atGround() {
tom@8316:         return yLower;
sascha@3257:     }
sascha@3257: 
sascha@3257:     public double atRight() {
tom@8316:         return xUpper;
sascha@3257:     }
sascha@3257: 
sascha@3257:     public double atLeft() {
tom@8316:         return xLower;
sascha@3257:     }
sascha@3257: 
sascha@3257:     public double above(double percent, double base) {
tom@8316:         if (yIsLog) {
tom@8316:             return Math.pow(10,
tom@8316:                 Math.log10(base)
tom@8316:                 + Math.log10(yUpper / yLower) * percent
tom@8316:             );
tom@8316:         }
tom@8316:         return base + yLength * percent;
sascha@3257:     }
sascha@3257: }
sascha@3259: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :