📄 exappearance.htm
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<TITLE>ExAppearance.java</TITLE>
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<CENTER>Controlling appearance</CENTER></FONT>
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<CENTER><B><I>ExAppearance.java</I></B></CENTER></FONT>
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/*
* @(#)ExAppearance.java 1.16 98/04/09 15:33:34
*
* Copyright (c) 1996-1998 Sun Microsystems, Inc. All Rights Reserved.
*
* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
* modify and redistribute this software in source and binary code form,
* provided that i) this copyright notice and license appear on all copies of
* the software; and ii) Licensee does not utilize the software in a manner
* which is disparaging to Sun.
*
* 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 DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* This software is not designed or intended for use in on-line control of
* aircraft, air traffic, aircraft navigation or aircraft communications; or in
* the design, construction, operation or maintenance of any nuclear
* facility. Licensee represents and warrants that it will not use or
* redistribute the Software for such purposes.
*/
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.image.TextureLoader;
import javax.media.j3d.*;
import javax.vecmath.*;
public class ExAppearance
extends Example
{
//--------------------------------------------------------------
// SCENE CONTENT
//--------------------------------------------------------------
public Group buildScene( )
{
// Turn off the example headlight
setHeadlightEnable( false );
// Build the scene group
Group objRoot = new Group( );
// 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);
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
AmbientLight aLgt = new AmbientLight(alColor);
aLgt.setInfluencingBounds(bounds);
DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
lgt1.setInfluencingBounds(bounds);
objRoot.addChild(aLgt);
objRoot.addChild(lgt1);
// Add a background
Background background = new Background( );
background.setColor( new Color3f( 0.0f, 0.5f, 1.0f ) );
background.setApplicationBounds( bounds );
objRoot.addChild( background );
// Create a bunch of objects with a behavior and add them
// into the scene graph.
int row, col;
Appearance[][] app = new Appearance[3][3];
for (row = 0; row < 3; row++)
for (col = 0; col < 3; col++)
app[row][col] = createAppearance(row * 3 + col);
for (int i = 0; i < 3; i++) {
double ypos = (double)(i - 1) * 1.9;
for (int j = 0; j < 3; j++) {
double xpos = (double)(j - 1) * 2.1;
objRoot.addChild(createObject(app[i][j], 1.0, xpos, ypos));
}
}
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);
switch (idx) {
// Unlit solid
case 0:
{
// Set up the coloring properties
Color3f objColor = new Color3f(1.0f, 0.2f, 0.4f);
ColoringAttributes ca = new ColoringAttributes();
ca.setColor(objColor);
app.setColoringAttributes(ca);
break;
}
// Unlit wire frame
case 1:
{
// Set up the coloring properties
Color3f objColor = new Color3f(1.0f, 0.2f, 0.4f);
ColoringAttributes ca = new ColoringAttributes();
ca.setColor(objColor);
app.setColoringAttributes(ca);
// Set up the polygon attributes
PolygonAttributes pa = new PolygonAttributes();
pa.setPolygonMode(pa.POLYGON_LINE);
pa.setCullFace(pa.CULL_NONE);
app.setPolygonAttributes(pa);
// Set up line attributes
LineAttributes lta = new LineAttributes();
lta.setLineWidth(10.0f);
app.setLineAttributes(lta);
break;
}
// Unlit points
case 2:
{
// Set up the coloring properties
Color3f objColor = new Color3f(1.0f, 0.2f, 0.4f);
ColoringAttributes ca = new ColoringAttributes();
ca.setColor(objColor);
app.setColoringAttributes(ca);
// Set up the polygon attributes
PolygonAttributes pa = new PolygonAttributes();
pa.setPolygonMode(pa.POLYGON_POINT);
pa.setCullFace(pa.CULL_NONE);
app.setPolygonAttributes(pa);
// Set up point attributes
PointAttributes pta = new PointAttributes();
pta.setPointSize(10.0f);
app.setPointAttributes(pta);
break;
}
// Lit solid
case 3:
{
// 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;
}
// Texture mapped, lit solid
case 4:
{
// Set up the texture map
TextureLoader tex = new TextureLoader("apimage.jpg", this);
app.setTexture(tex.getTexture());
// Set up the material properties
app.setMaterial(new Material(white, black, white, black, 1.0f));
break;
}
// Transparent, lit solid
case 5:
{
// Set up the transparency properties
TransparencyAttributes ta = new TransparencyAttributes();
ta.setTransparencyMode(ta.BLENDED);
ta.setTransparency(0.6f);
app.setTransparencyAttributes(ta);
// Set up the polygon attributes
PolygonAttributes pa = new PolygonAttributes();
pa.setCullFace(pa.CULL_NONE);
app.setPolygonAttributes(pa);
// Set up the material properties
Color3f objColor = new Color3f(0.7f, 0.8f, 1.0f);
app.setMaterial(new Material(objColor, black, objColor,
black, 1.0f));
break;
}
// Lit solid, no specular
case 6:
{
// Set up the material properties
Color3f objColor = new Color3f(0.0f, 0.0f, 0.8f);
app.setMaterial(new Material(objColor, black, objColor,
black, 80.0f));
break;
}
// Lit solid, specular only
case 7:
{
// Set up the material properties
Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
app.setMaterial(new Material(black, black, black,
white, 80.0f));
break;
}
// Another lit solid with a different color
case 8:
{
// Set up the material properties
Color3f objColor = new Color3f(0.8f, 0.8f, 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(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);
// Create a simple shape leaf node and set the appearance
Shape3D shape = new Tetrahedron( );
shape.setAppearance(app);
// add it to the scene graph.
spinTg.addChild(shape);
// 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;
}
//--------------------------------------------------------------
// USER INTERFACE
//--------------------------------------------------------------
//
// Main
//
public static void main( String[] args )
{
ExAppearance ex = new ExAppearance( );
ex.initialize( args );
ex.buildUniverse( );
ex.showFrame( );
}
//
// Initialize the GUI (application and applet)
//
public void initialize( String[] args )
{
// Initialize the window, menubar, etc.
super.initialize( args );
exampleFrame.setTitle( "Java 3D Appearance Example" );
}
}
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