Add printWave example.

Author: jpsacha

scala-console/examples/printWave.scala

@@ -0,0 +1,40 @@
+/*
+ * ImageJ Plugins
+ * Copyright (C) 2002-2016 Jarek Sacha
+ * Author's email: jpsacha at gmail dot com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Latest release available at https://github.com/ij-plugins
+ *
+ */
+
+import scala.math._
+
+/*
+* Print a wave to the standard output
+*/
+val scale = 2
+for (x <- Range.Double(-Pi / 2, 3.5 * Pi, Pi / 5)) {
+  // Prepare empty line
+  val line = Array.fill(scale * 2 + 1) {
+    " "
+  }
+  // Create marker at location `y`
+  val y = round((sin(x) + 1) * scale).toInt
+  line(y) = "*"
+  // Print line as string
+  println(line.mkString(" "))
+}