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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._
/**Pair of shapes.*/
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
}
}
}
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