Mega Code Archive
Spheres, cylinders, and cones of different resolutions and colors
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/*
* @(#)ConicWorld.java 1.27 02/10/21 13:38:29
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. 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.
*
* - Redistribution 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 Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
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*/
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;
import javax.media.j3d.Alpha;
import javax.media.j3d.AmbientLight;
import javax.media.j3d.Appearance;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.ColoringAttributes;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.Group;
import javax.media.j3d.Material;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.TextureAttributes;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Cone;
import com.sun.j3d.utils.geometry.Cylinder;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.universe.SimpleUniverse;
/**
* ConicWorld creates spheres, cylinders, and cones of different resolutions and
* colors. Demonstrates the use of the various geometry creation constructors
* found in the com.sun.j3d.utils.geometry package.
*/
public class ConicWorld extends Applet {
private java.net.URL texImage = null;
private SimpleUniverse u = null;
public BranchGroup createSceneGraph(Canvas3D c) {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create a bounds for the background and behaviors
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
// Set up the background
Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
Background bg = new Background(bgColor);
bg.setApplicationBounds(bounds);
objRoot.addChild(bg);
// Set up the global lights
Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
Vector3f lDir1 = new Vector3f(-1.0f, -1.0f, -1.0f);
Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
AmbientLight aLgt = new AmbientLight(alColor);
aLgt.setInfluencingBounds(bounds);
DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
lgt1.setInfluencingBounds(bounds);
objRoot.addChild(aLgt);
objRoot.addChild(lgt1);
// Create a bunch of objects with a behavior and add them
// into the scene graph.
int row, col;
int numRows = 3, numCols = 5;
Appearance[][] app = new Appearance[numRows][numCols];
for (row = 0; row < numRows; row++)
for (col = 0; col < numCols; col++)
app[row][col] = createAppearance(row * numCols + col);
// Space between each row/column
double xspace = 2.0 / ((double) numCols - 1.0);
double yspace = 2.0 / ((double) numRows - 1.0);
for (int i = 0; i < numRows; i++) {
double ypos = ((double) i * yspace - 1.0) * 0.6;
for (int j = 0; j < numCols; j++) {
double xpos = xpos = ((double) j * xspace - 1.0) * 0.6;
objRoot
.addChild(createObject(i, j, app[i][j], 0.1, xpos, ypos));
}
}
// Let Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
}
private Appearance createAppearance(int idx) {
Appearance app = new Appearance();
// Globally used colors
Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
idx = idx % 5;
switch (idx) {
// Lit solid
case 0: {
// Set up the material properties
Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
app.setMaterial(new Material(objColor, black, objColor, white,
80.0f));
break;
}
// Lit solid, no specular
case 1: {
// Set up the material properties
Color3f objColor = new Color3f(0.0f, 0.8f, 0.0f);
app.setMaterial(new Material(objColor, black, objColor, white,
80.0f));
break;
}
// Lit solid, specular only
case 2: {
// Set up the material properties
Color3f objColor = new Color3f(0.0f, 0.8f, 0.8f);
app.setMaterial(new Material(black, black, objColor, white, 80.0f));
break;
}
// Texture mapped, lit solid
case 3: {
// Set up the texture map
TextureLoader tex = new TextureLoader(texImage, this);
app.setTexture(tex.getTexture());
// Set up the material properties
app.setMaterial(new Material(white, black, white, black, 1.0f));
TextureAttributes texAttr = new TextureAttributes();
texAttr.setTextureMode(TextureAttributes.MODULATE);
app.setTextureAttributes(texAttr);
break;
}
// Another lit solid with a different color
case 4: {
// Set up the material properties
Color3f objColor = new Color3f(1.0f, 1.0f, 0.0f);
app.setMaterial(new Material(objColor, black, objColor, white,
80.0f));
break;
}
default: {
ColoringAttributes ca = new ColoringAttributes();
ca.setColor(new Color3f(0.0f, 1.0f, 0.0f));
app.setColoringAttributes(ca);
}
}
return app;
}
private Group createObject(int i, int j, Appearance app, double scale,
double xpos, double ypos) {
// Create a transform group node to scale and position the object.
Transform3D t = new Transform3D();
t.set(scale, new Vector3d(xpos, ypos, 0.0));
TransformGroup objTrans = new TransformGroup(t);
// Create a second transform group node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at runtime.
TransformGroup spinTg = new TransformGroup();
spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
Primitive obj = null;
if (i % 3 == 2) {
obj = (Primitive) new Sphere(1.0f, Sphere.GENERATE_NORMALS
| Sphere.GENERATE_TEXTURE_COORDS, j * 8 + 4, app);
} else if (i % 3 == 1) {
obj = (Primitive) new Cylinder(1.0f, 2.0f,
Cylinder.GENERATE_TEXTURE_COORDS
| Cylinder.GENERATE_NORMALS, j * 8 + 4, j * 8 + 4,
app);
} else if (i % 3 == 0) {
obj = (Primitive) new Cone(1.0f, 2.0f, Cone.GENERATE_NORMALS
| Cone.GENERATE_TEXTURE_COORDS, j * 8 + 4, j * 8 + 4, app);
}
// add it to the scene graph.
spinTg.addChild(obj);
// Create a new Behavior object that will perform the desired
// operation on the specified transform object and add it into
// the scene graph.
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0,
5000, 0, 0, 0, 0, 0);
RotationInterpolator rotator = new RotationInterpolator(rotationAlpha,
spinTg, yAxis, 0.0f, (float) Math.PI * 2.0f);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
rotator.setSchedulingBounds(bounds);
// Add the behavior and the transform group to the object
objTrans.addChild(rotator);
objTrans.addChild(spinTg);
return objTrans;
}
public ConicWorld() {
}
public ConicWorld(java.net.URL url) {
texImage = url;
}
public void init() {
if (texImage == null) {
// the path to the image for an applet
try {
texImage = new java.net.URL(getCodeBase().toString()
+ "/earth.jpg");
} catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
}
setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
Canvas3D c = new Canvas3D(config);
add("Center", c);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph(c);
u = new SimpleUniverse(c);
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
}
public void destroy() {
u.cleanup();
}
//
// The following allows ConicWorld to be run as an application
// as well as an applet
//
public static void main(String[] args) {
// the path to the image file for an application
java.net.URL url = null;
try {
url = new java.net.URL("file:earth.jpg");
} catch (java.net.MalformedURLException ex) {
System.out.println(ex.getMessage());
System.exit(1);
}
new MainFrame(new ConicWorld(url), 700, 700);
}
}
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