I need to texture mapping some text such as "C A R" to a sphere. First I create a
text2D object then I use TextCoordGeneration. The problem is the text is textured to
the metaball properly, but there is also a reflection of the text is also textured. I
use OBJECT_LINEAR. I can't figure it out. I attach all my program below. Thank you
very very much if you can help me.
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.BorderLayout;
import java.awt.Frame;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.behaviors.keyboard.KeyNavigatorBehavior;
import com.sun.j3d.utils.behaviors.keyboard.*;
import com.sun.j3d.utils.universe.PlatformGeometry;
import java.awt.event.KeyEvent;
import com.sun.j3d.utils.geometry.Text2D;
import java.awt.Font;
import javax.vecmath.Vector3f;
public class sphere {
static Sphere createMetaball(){
String result = " C A R ";
Text2D text2d = new Text2D(result, new Color3f(0.9f, 1.0f, 1.0f), "Courier",
12, Font.BOLD);
text2d.setString(result);
text2d.setCapability( Shape3D.ALLOW_GEOMETRY_READ);
text2d.setCapability( Shape3D.ALLOW_GEOMETRY_WRITE);
text2d.setRectangleScaleFactor(1.0f / 256.0f);
text2d.setString(result);
Appearance appearance = text2d.getAppearance();
TexCoordGeneration tcg = new
TexCoordGeneration(TexCoordGeneration.OBJECT_LINEAR,TexCoordGeneration.TEXTURE_COORDINATE_2);
tcg.setEnable( true );
appearance.setTexCoordGeneration(tcg);
appearance.getTexture().setBoundaryModeS(Texture.CLAMP_TO_BOUNDARY);
appearance.getTexture().setBoundaryModeT(Texture.CLAMP_TO_BOUNDARY);
PolygonAttributes pa1 = new PolygonAttributes();
pa1.setPolygonMode( PolygonAttributes.POLYGON_FILL);
pa1.setCullFace(PolygonAttributes.CULL_BACK);
//pa1.setBackFaceNormalFlip( true );
appearance.setPolygonAttributes( pa1 );
TextureAttributes texturemode = new TextureAttributes();
texturemode.setTextureMode(TextureAttributes.DECAL);
texturemode.setPerspectiveCorrectionMode(TextureAttributes.NICEST);
appearance.setTextureAttributes(texturemode);
// set material
Material material = new Material(); // lighting attributes
material.setShininess(50.0f); // add by ldu
material.setAmbientColor( new Color3f( 0.2f, 0.0f, 0.0f ) );
material.setDiffuseColor( new Color3f( 0.0f, 0.0f, 0.7f ) );
material.setLightingEnable( true );
appearance.setMaterial( material);
TransparencyAttributes transparencyAttributes = new TransparencyAttributes();
transparencyAttributes.setTransparencyMode(TransparencyAttributes.NONE);
transparencyAttributes.setTransparency(0.0f);
appearance.setTransparencyAttributes(transparencyAttributes);
Sphere sphere = new Sphere(3.0f);
// ball.setGeometry(gi.getGeometryArray());
sphere.setAppearance(appearance);
return sphere;
}
public static void main( String[] args ) {
// Build the canvas
GraphicsConfigTemplate3D tmpl = new GraphicsConfigTemplate3D( );
GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice device = env.getDefaultScreenDevice();
GraphicsConfiguration config = device.getBestConfiguration(tmpl);
Canvas3D canvas = new Canvas3D( config );
// Build the view
PhysicalBody body = new PhysicalBody( );
PhysicalEnvironment environment = new PhysicalEnvironment();
View view = new View();
view.addCanvas3D( canvas );
view.setPhysicalBody( body );
view.setPhysicalEnvironment( environment );
// create the universe
VirtualUniverse universe = new VirtualUniverse( );
Locale locale = new Locale( universe );
// Create the view branch
BranchGroup viewRoot = new BranchGroup( );
TransformGroup viewTransform = new TransformGroup( );
viewTransform.setCapability( TransformGroup.ALLOW_TRANSFORM_READ );
viewTransform.setCapability( TransformGroup.ALLOW_TRANSFORM_WRITE );
Transform3D transform = new Transform3D( );
transform.set( new Vector3d( 0, 0, 15 ) );
viewTransform.setTransform( transform );
ViewPlatform vp = new ViewPlatform( );
vp.setCapability(ViewPlatform.ALLOW_POLICY_READ);
vp.setCapability(ViewPlatform.ALLOW_POLICY_WRITE);
vp.setViewAttachPolicy(View.NOMINAL_HEAD);
view.attachViewPlatform( vp );
viewTransform.addChild( vp );
viewRoot.addChild( viewTransform );
viewRoot.compile( );
locale.addBranchGraph( viewRoot );
BranchGroup objectRoot = new BranchGroup( );
TransformGroup objectTransform = new TransformGroup( );
//TransformGroup objectTransform2 = new TransformGroup( );
transform.set( new Vector3d( 0, 0, 0 ) );
//transform.rotX(Math.PI/4.0d);
objectTransform.setTransform( transform );
objectTransform.setCapability( TransformGroup.ALLOW_TRANSFORM_READ );
objectTransform.setCapability( TransformGroup.ALLOW_TRANSFORM_WRITE );
objectRoot.addChild(objectTransform);
objectTransform.addChild(createMetaball());
Alpha rotationAlpha = new Alpha(-1, 50000);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objectTransform);
// a bounding sphere specifies a region a behavior is active
// create a sphere centered at the origin with radius of 1
BoundingSphere bounds = new BoundingSphere();
rotator.setSchedulingBounds(bounds);
objectTransform.addChild(rotator);
// add KeyNavigatorBehavior
KeyNavigatorBehavior keyNavBeh = new KeyNavigatorBehavior(viewTransform);
keyNavBeh.setSchedulingBounds(new BoundingSphere(new Point3d(),1000.0));
keyNavBeh.setEnable( true );
objectRoot.addChild(keyNavBeh);
// Create the light
AmbientLight ambLight = new AmbientLight(new Color3f(1.0f,1.0f,1.0f) );
ambLight.setInfluencingBounds(new BoundingSphere(new Point3d( 0.0, 0.0,
0.0),1000));
objectRoot.addChild(ambLight);
DirectionalLight dirLight = new DirectionalLight(new Color3f(1.0f, 1.0f, 1.0f
),new Vector3f( -1.0f, -1.0f, -1.0f ) );
dirLight.setInfluencingBounds(new BoundingSphere(new Point3d(0.0,0.0,0.0),1000.0));
objectRoot.addChild(dirLight);
objectRoot.compile( );
locale.addBranchGraph(objectRoot);
// Create the UI
javax.swing.JFrame frame = new javax.swing.JFrame( "Metaball Universe");
frame.getContentPane( ).setLayout( new java.awt.BorderLayout( ) );
frame.getContentPane( ).add( canvas, "Center" );
//frame.addKeyListener(java.awt.event.KeyListener);
frame.setSize( new java.awt.Dimension( 300, 300 ) );
frame.addWindowListener( new java.awt.event.WindowAdapter( ) {
public void windowClosing( java.awt.event.WindowEvent e ) {
System.exit( 0 );
}
} );
frame.setVisible( true );
}
}
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