1 files changed, 21 insertions, 0 deletions
diff --git a/src/sims/collision/Pair.scala b/src/sims/collision/Pair.scala
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+++ b/src/sims/collision/Pair.scala
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+/*
+ * Simple Mechanics Simulator (SiMS)
+ * copyright (c) 2009 Jakob Odersky
+ * made available under the MIT License
+*/
+
+package sims.collision
+
+import sims.dynamics._
+
+/**Formenpaar.*/
+case class Pair(s1: Shape, s2: Shape) extends Tuple2(s1, s2){
+  def this(t: Tuple2[Shape, Shape]) = this(t._1, t._2)
+  
+  override def equals(other: Any) = { //overriden to prevent removal during "GridDetector.getPairs" 
+    other match {
+      case Pair(a, b) => ((a eq this.s1) && (b eq this.s2)) || ((b eq this.s1) && (a eq this.s2))  
+      case _ => false
+    }
+  }
+}