X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Futil%2FMappingUtils.java;h=b552c21413d761a427ed227c8876ffad801e5b7e;hb=91cf2210f6440d85c8a488c1bd18b0d3feb93f19;hp=5a26ed6d5d6a88ba0bf1a763bb00f0dc2c599a1c;hpb=0c83c631f7d7db0baad3335805c15dd40c0aed59;p=jalview.git

diff --git a/src/jalview/util/MappingUtils.java b/src/jalview/util/MappingUtils.java
index 5a26ed6..b552c21 100644
--- a/src/jalview/util/MappingUtils.java
+++ b/src/jalview/util/MappingUtils.java
@@ -943,6 +943,34 @@ public final class MappingUtils
   }
 
   /**
+   * Answers true if range's start-end positions include those of queryRange,
+   * where either range might be in reverse direction, else false
+   * 
+   * @param range
+   *          a start-end range
+   * @param queryRange
+   *          a candidate subrange of range (start2-end2)
+   * @return
+   */
+  public static boolean rangeContains(int[] range, int[] queryRange)
+  {
+    if (range == null || queryRange == null || range.length != 2
+            || queryRange.length != 2)
+    {
+      /*
+       * invalid arguments
+       */
+      return false;
+    }
+
+    int min = Math.min(range[0], range[1]);
+    int max = Math.max(range[0], range[1]);
+  
+    return (min <= queryRange[0] && max >= queryRange[0]
+            && min <= queryRange[1] && max >= queryRange[1]);
+  }
+
+  /**
    * Removes the specified number of positions from the given ranges. Provided
    * to allow a stop codon to be stripped from a CDS sequence so that it matches
    * the peptide translation length.