test and fix issue #358 (Centered BitmapText is rendered blurry)

jme3-core/src/main/java/com/jme3/font/Letters.java

@@ -214,7 +214,7 @@ class Letters {
             if (cursor.isEndOfLine()) {
                 lineWidth = cursor.getX1()-block.getTextBox().x;
                 if (alignment == Align.Center) {
-                    gapX = (width-lineWidth)/2;
+                    gapX = Math.round((width-lineWidth)/2);
                 } else if (alignment == Align.Right) {
                     gapX = width-lineWidth;
                 } else {

jme3-examples/src/main/java/jme3test/gui/TestIssue358.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package jme3test.gui;
+
+import com.jme3.app.SimpleApplication;
+import com.jme3.font.BitmapFont;
+import com.jme3.font.BitmapFont.Align;
+import com.jme3.font.BitmapText;
+import com.jme3.font.Rectangle;
+
+/**
+ * Test code for issue #358 ("Centered BitmapText is rendered blurry" based on
+ * code submitted by slyh80.
+ */
+public class TestIssue358 extends SimpleApplication {
+
+    public static void main(String[] args) {
+        new TestIssue358().start();
+    }
+
+    @Override
+    public void simpleInitApp() {
+        BitmapFont font = getAssetManager().loadFont("Interface/Fonts/Console.fnt");
+        BitmapText text = font.createLabel("This is a centered test text that does not look nice");
+        text.setBox(new Rectangle(250, 240, 110, 100));
+        text.setAlignment(Align.Center);
+
+        getGuiNode().attachChild(text);
+    }
+}