--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/org/dive4elements/river/exports/ChartArea.java	Thu Apr 25 12:06:39 2013 +0200
@@ -0,0 +1,57 @@
+package org.dive4elements.river.exports;
+
+import org.jfree.chart.axis.ValueAxis;
+
+import org.jfree.data.Range;
+
+/** Two Ranges that span a rectangular area. */
+public class ChartArea {
+    protected Range xRange;
+    protected Range yRange;
+
+    public ChartArea(Range rangeX, Range rangeY) {
+        this.xRange = rangeX;
+        this.yRange = rangeY;
+    }
+
+    public ChartArea(ValueAxis axisX, ValueAxis axisY) {
+        this.xRange = axisX.getRange();
+        this.yRange = axisY.getRange();
+    }
+
+    public double ofLeft(double percent) {
+        return xRange.getLowerBound()
+            + xRange.getLength() * percent;
+    }
+
+    public double ofRight(double percent) {
+        return xRange.getUpperBound()
+            - xRange.getLength() * percent;
+    }
+
+    public double ofGround(double percent) {
+        return yRange.getLowerBound()
+            + yRange.getLength() * percent;
+    }
+
+    public double atTop() {
+        return yRange.getUpperBound();
+    }
+
+    public double atGround() {
+        return yRange.getLowerBound();
+    }
+
+    public double atRight() {
+        return xRange.getUpperBound();
+    }
+
+    public double atLeft() {
+        return xRange.getLowerBound();
+    }
+
+    public double above(double percent, double base) {
+        return base + yRange.getLength() * percent;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :