1 files changed, 104 insertions, 0 deletions
diff --git a/engine/src/core/com/jme3/light/DirectionalLight.java b/engine/src/core/com/jme3/light/DirectionalLight.java
new file mode 100644
index 0000000..e2bcdee
--- /dev/null
+++ b/engine/src/core/com/jme3/light/DirectionalLight.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2009-2010 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 com.jme3.light;
+
+import com.jme3.export.InputCapsule;
+import com.jme3.export.JmeExporter;
+import com.jme3.export.JmeImporter;
+import com.jme3.export.OutputCapsule;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Spatial;
+import java.io.IOException;
+
+/**
+ * <code>DirectionalLight</code> is a light coming from a certain direction in world space. 
+ * E.g sun or moon light.
+ * <p>
+ * Directional lights have no specific position in the scene, they always 
+ * come from their direction regardless of where an object is placed.
+ */
+public class DirectionalLight extends Light {
+
+    protected Vector3f direction = new Vector3f(0f, -1f, 0f);
+
+    @Override
+    public void computeLastDistance(Spatial owner) {
+        lastDistance = 0; // directional lights are always closest to their owner
+    }
+
+    /**
+     * Returns the direction vector of the light.
+     * 
+     * @return The direction vector of the light.
+     * 
+     * @see DirectionalLight#setDirection(com.jme3.math.Vector3f) 
+     */
+    public Vector3f getDirection() {
+        return direction;
+    }
+
+    /**
+     * Sets the direction of the light.
+     * <p>
+     * Represents the vector direction the light is coming from.
+     * (1, 0, 0) would represent a directional light coming from the X axis.
+     * 
+     * @param dir the direction of the light.
+     */
+    public void setDirection(Vector3f dir){
+        direction.set(dir);
+        if (!direction.isUnitVector()) {
+            direction.normalizeLocal();
+        }
+    }
+
+    @Override
+    public Type getType() {
+        return Type.Directional;
+    }
+
+    @Override
+    public void write(JmeExporter ex) throws IOException {
+        super.write(ex);
+        OutputCapsule oc = ex.getCapsule(this);
+        oc.write(direction, "direction", null);
+    }
+
+    @Override
+    public void read(JmeImporter im) throws IOException {
+        super.read(im);
+        InputCapsule ic = im.getCapsule(this);
+        direction = (Vector3f) ic.readSavable("direction", null);
+    }
+
+}