/**
* Copyright (c) 2008-2012 Ardor Labs, Inc.
*
* This file is part of Ardor3D.
*
* Ardor3D is free software: you can redistribute it and/or modify it
* under the terms of its license which may be found in the accompanying
* LICENSE file or at <http://www.ardor3d.com/LICENSE>.
*/
package com.ardor3d.example.renderer;
import java.util.Random;
import com.ardor3d.bounding.BoundingSphere;
import com.ardor3d.example.ExampleBase;
import com.ardor3d.example.Purpose;
import com.ardor3d.light.PointLight;
import com.ardor3d.math.ColorRGBA;
import com.ardor3d.math.MathUtils;
import com.ardor3d.math.Vector3;
import com.ardor3d.scenegraph.Node;
import com.ardor3d.scenegraph.Spatial;
import com.ardor3d.scenegraph.controller.SpatialController;
import com.ardor3d.scenegraph.hint.LightCombineMode;
import com.ardor3d.scenegraph.shape.Sphere;
import com.ardor3d.util.ReadOnlyTimer;
/**
* A demonstration of randomly placed spheres being illuminated by numerious PointLight sources.
*/
@Purpose(htmlDescriptionKey = "com.ardor3d.example.renderer.ManyLightsExample", //
thumbnailPath = "com/ardor3d/example/media/thumbnails/renderer_ManyLightsExample.jpg", //
maxHeapMemory = 64)
public class ManyLightsExample extends ExampleBase {
private final Random rand = new Random();
private Node colornode;
private final double worldsize = 20;
public static void main(final String[] args) {
start(ManyLightsExample.class);
}
@Override
protected void updateExample(final ReadOnlyTimer timer) {
_root.sortLights();
}
/**
* Create a randomly positioned light and lightsphere with a controller
*
* @param i
* Index of the light
*/
void randomLight(final int i) {
// Chose the color for the lights.
final ColorRGBA lightColor = ColorRGBA.randomColor(new ColorRGBA());
// Create a sphere to show where the light is in the demo.
final Sphere lightSphere = new Sphere("lightSphere" + i, 9, 9, .1f);
lightSphere.setModelBound(new BoundingSphere());
lightSphere.getSceneHints().setLightCombineMode(LightCombineMode.Off);
lightSphere.setDefaultColor(lightColor);
// Create a new point light and fill out the properties
final PointLight pointLight = new PointLight();
pointLight.setAttenuate(true);
pointLight.setConstant(.01f);
pointLight.setLinear(.001f);
pointLight.setQuadratic(.1f);
pointLight.setEnabled(true);
pointLight.setDiffuse(lightColor);
pointLight.setAmbient(new ColorRGBA(.1f, .1f, .1f, .1f));
_lightState.attach(pointLight);
lightSphere.addController(new SpatialController<Spatial>() {
double timeX = rand.nextDouble() * Math.PI * 8;
double timeY = rand.nextDouble() * Math.PI * 8;
double timeZ = rand.nextDouble() * Math.PI * 8;
double speed = MathUtils.nextRandomDouble();
public void update(final double tpf, final Spatial caller) {
timeX += tpf * speed;
timeY += tpf * speed;
timeZ += tpf * speed;
final double xPos = Math.sin(timeX * 0.4) * worldsize;
final double yPos = Math.cos(timeY * 0.5) * worldsize;
final double zPos = Math.sin(timeZ * 0.6) * worldsize;
caller.setTranslation(xPos, yPos, zPos);
pointLight.setLocation(xPos, yPos, zPos);
}
});
// Add the light to the world part 2.
colornode.attachChild(lightSphere);
}
/**
* Create a random sphere to be affected by the light
*
* @param i
* Index of the sphere
*/
void randomSphere(final int i) {
// Crate a sphere and position it.
final Sphere sphere = new Sphere("sphere" + i, 18, 18, MathUtils.nextRandomDouble() * 1.75 + 1.25);
sphere.updateModelBound();
sphere.setTranslation(new Vector3(rand.nextDouble() * worldsize * 2 - worldsize, rand.nextDouble() * worldsize
* 2 - worldsize, rand.nextDouble() * worldsize * 2 - worldsize));
_root.attachChild(sphere);
}
@Override
protected void initExample() {
_lightState.detachAll();
_lightState.setTwoSidedLighting(true);
_lightState.setLocalViewer(true);
rand.setSeed(1337);
// Now add all the lights.
colornode = new Node("LightNode");
for (int i = 0; i < 40; i++) {
randomLight(i);
}
// Add the spheres.
for (int i = 0; i < 30; i++) {
randomSphere(i);
}
_root.attachChild(colornode);
}
}