--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2011 Association for Decentralized Information Management in\r
+ * Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.diagram.connection;\r
+\r
+public class Directions {\r
+\r
+ public static boolean isAllowed(int allowedDirection, int direction) {\r
+ return ((allowedDirection >> direction)&1) == 1;\r
+ }\r
+\r
+ public static int firstAllowedDirection(int allowedDirections) {\r
+ for(int dir=0;dir<4;++dir,allowedDirections>>=1) {\r
+ if((allowedDirections&1) == 1)\r
+ return dir;\r
+ }\r
+ return 0;\r
+ }\r
+ \r
+}\r