DIYLC/src/org/diylc/presenter/CalcUtils.java

@@ -0,0 +1,25 @@
+package org.diylc.presenter;
+
+import java.awt.Point;
+
+import org.diylc.core.measures.Size;
+
+public class CalcUtils {
+
+	/**
+	 * Rounds the number to the closest grid line.
+	 * 
+	 * @param x
+	 * @return
+	 */
+	public static int roundToGrid(int x, Size gridSpacing) {
+		int grid = gridSpacing.convertToPixels();
+		return (Math.round(1f * x / grid) * grid);
+	}
+
+	public static void snapPointToGrid(Point point, Size gridSpacing) {
+		int x = roundToGrid(point.x, gridSpacing);
+		int y = roundToGrid(point.y, gridSpacing);
+		point.setLocation(x, y);
+	}
+}