| /* |
| * 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.*; |
| import com.jme3.math.ColorRGBA; |
| import com.jme3.scene.Spatial; |
| import java.io.IOException; |
| |
| /** |
| * Abstract class for representing a light source. |
| * <p> |
| * All light source types have a color. |
| */ |
| public abstract class Light implements Savable, Cloneable { |
| |
| /** |
| * Describes the light type. |
| */ |
| public enum Type { |
| |
| /** |
| * Directional light |
| * |
| * @see DirectionalLight |
| */ |
| Directional(0), |
| |
| /** |
| * Point light |
| * |
| * @see PointLight |
| */ |
| Point(1), |
| |
| /** |
| * Spot light. |
| * <p> |
| * Not supported by jMonkeyEngine |
| */ |
| Spot(2), |
| |
| /** |
| * Ambient light |
| * |
| * @see AmbientLight |
| */ |
| Ambient(3); |
| |
| private int typeId; |
| |
| Type(int type){ |
| this.typeId = type; |
| } |
| |
| /** |
| * Returns an index for the light type |
| * @return an index for the light type |
| */ |
| public int getId(){ |
| return typeId; |
| } |
| } |
| |
| protected ColorRGBA color = new ColorRGBA(1f,1f,1f,1f); |
| |
| /** |
| * Used in LightList for caching the distance |
| * to the owner spatial. Should be reset after the sorting. |
| */ |
| protected transient float lastDistance = -1; |
| |
| /** |
| * If light is disabled, it will not have any |
| */ |
| protected boolean enabled = true; |
| |
| /** |
| * The light name. |
| */ |
| protected String name; |
| |
| /** |
| * Returns the color of the light. |
| * |
| * @return The color of the light. |
| */ |
| public ColorRGBA getColor() { |
| return color; |
| } |
| |
| /** |
| * This method sets the light name. |
| * |
| * @param name the light name |
| */ |
| public void setName(String name) { |
| this.name = name; |
| } |
| |
| /** |
| * Return the light name. |
| * |
| * @return the light name |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /* |
| public void setLastDistance(float lastDistance){ |
| this.lastDistance = lastDistance; |
| } |
| |
| public float getLastDistance(){ |
| return lastDistance; |
| } |
| */ |
| |
| /** |
| * Sets the light color. |
| * |
| * @param color the light color. |
| */ |
| public void setColor(ColorRGBA color){ |
| this.color.set(color); |
| } |
| |
| |
| /* |
| * Returns true if the light is enabled |
| * |
| * @return true if the light is enabled |
| * |
| * @see Light#setEnabled(boolean) |
| */ |
| /* |
| public boolean isEnabled() { |
| return enabled; |
| } |
| */ |
| |
| @Override |
| public Light clone(){ |
| try { |
| return (Light) super.clone(); |
| } catch (CloneNotSupportedException ex) { |
| throw new AssertionError(); |
| } |
| } |
| |
| public void write(JmeExporter ex) throws IOException { |
| OutputCapsule oc = ex.getCapsule(this); |
| oc.write(color, "color", null); |
| oc.write(enabled, "enabled", true); |
| oc.write(name, "name", null); |
| } |
| |
| public void read(JmeImporter im) throws IOException { |
| InputCapsule ic = im.getCapsule(this); |
| color = (ColorRGBA) ic.readSavable("color", null); |
| enabled = ic.readBoolean("enabled", true); |
| name = ic.readString("name", null); |
| } |
| |
| /** |
| * Used internally to compute the last distance value. |
| */ |
| protected abstract void computeLastDistance(Spatial owner); |
| |
| /** |
| * Returns the light type |
| * |
| * @return the light type |
| * |
| * @see Type |
| */ |
| public abstract Type getType(); |
| |
| } |