Andy,
I guess I want to change the scene on the fly. I have included a quick
demo of what I am
trying to do. It is a demo that displays three strings of text. The user
can change and update
the text by clicking a button.
thanks again for any help or suggestions.
Steve
At 11:44 AM 12/10/99 -0600, you wrote:
>Steve,
>
>Can you be more specific with the problem?
>Is it that you do not know how to physically change shapes on the scene
>graph, or are you having problems changing the scene on the fly (as a
>function of time)?
>
>Andy
>
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.geometry.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.behaviors.keyboard.*;
class TextProblemJPanel extends JPanel
{
String []my_list = new String[3];
Button updateB = new Button("Update");
JTextField field1 = new JTextField(10);
JTextField field2 = new JTextField(10);
JTextField field3 = new JTextField(10);
public TextProblemJPanel(String sOne, String sTwo, String sThree)
{
my_list[0] = sOne;
my_list[1] = sTwo;
my_list[2] = sThree;
this.setPreferredSize(new Dimension(400,400));
setLayout(new BorderLayout());
Canvas3D canvas3D = new Canvas3D(null);
add("Center", canvas3D);
Vector3f translate = new Vector3f();
Transform3D t3d = new Transform3D();
TransformGroup tg = null;
SimpleUniverse simpleU = new SimpleUniverse(canvas3D);
tg = simpleU.getViewingPlatform().getViewPlatformTransform();
translate.set(0.0f,0.0f, 1.0f);
t3d.setTranslation(translate);
tg.setTransform(t3d);
simpleU.addBranchGraph(createSceneGraph());
JPanel instructionPanel = new JPanel(new GridLayout(0,1));
instructionPanel.add(field1);
field1.setText(my_list[0]);
instructionPanel.add(field2);
field2.setText(my_list[1]);
instructionPanel.add(field3);
field3.setText(my_list[2]);
instructionPanel.add(updateB);
add(instructionPanel, BorderLayout.SOUTH);
// create a mouse listener
MouseListen mListen = new MouseListen();
// register listeners
updateB.addMouseListener(mListen);
}
// setup font stuff
private String fontName = "TestFont";
// create 3D text
Font3D f3d = new Font3D(new Font(fontName, Font.PLAIN, 1), new FontExtrusion());
public void createMethodRepresentation( double x, double y, double z, String
methName, TransformGroup objScale, BoundingSphere bounds, boolean allow_billboard )
{
float slen = methName.length();
float adjust_x_len = (float)(x - (slen/3.0f));
Transform3D sphereMat = new Transform3D();
TransformGroup sphereTrans = new TransformGroup(sphereMat);
sphereTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
sphereTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
///////////////////////////////////////////////
Text3D txt = new Text3D(f3d, methName, new Point3f( (float)adjust_x_len,
(float)(y), (float)z));
Shape3D textShape = new Shape3D();
textShape.setGeometry(txt);
Appearance apText = new Appearance();
Material m = new Material();
m.setLightingEnable(true);
// m.setAmbientColor(0.0f,0.0f,0.0f); // r,g,b
m.setAmbientColor( new Color3f(0.0f,1.0f,0.0f) ); // have to pass in color
m.setDiffuseColor( new Color3f(0.0f,1.0f,0.0f) ); // have to pass in color
apText.setMaterial(m);
textShape.setAppearance(apText);
///////////////////////////////////////
// bboardY.setSchedulingBounds( bounds );
sphereTrans.addChild( textShape );
objScale.addChild( sphereTrans );
}
public BranchGroup createSceneGraph()
{
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
TransformGroup objScale = new TransformGroup();
Transform3D textMat = new Transform3D();
textMat.setScale(0.05);
objScale.setTransform(textMat);
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objTrans.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
objRoot.addChild(objTrans);
objTrans.addChild(objScale);
BoundingSphere bounds = new BoundingSphere(new
Point3d(0.0,0.0,0.0), 1000.0);
for ( int i = 0; i < 3; i++ )
{
createMethodRepresentation( 0.0, -i, 0.0, my_list[i],
objScale, bounds, true );
}
setupRotations( bounds, objRoot, objTrans );
setupLights( bounds, objRoot );
return objRoot;
}
public void setupRotations( BoundingSphere bounds, BranchGroup objRoot,
TransformGroup objTrans )
{
// Create the rotate behavior node
MouseRotate behavior = new MouseRotate();
behavior.setTransformGroup(objTrans);
objTrans.addChild(behavior);
behavior.setSchedulingBounds(bounds);
// Create the zoom behavior node
MouseZoom behavior2 = new MouseZoom();
behavior2.setTransformGroup(objTrans);
objTrans.addChild(behavior2);
behavior2.setSchedulingBounds(bounds);
// Create the translate behavior node
MouseTranslate behavior3 = new MouseTranslate();
behavior3.setTransformGroup(objTrans);
objTrans.addChild(behavior3);
behavior3.setSchedulingBounds(bounds);
}
public void setupLights( BoundingSphere bounds, BranchGroup objRoot )
{
// Set up the ambient light
Color3f ambientColor = new Color3f(0.1f, 0.1f, 0.1f);
AmbientLight ambientLightNode = new AmbientLight(ambientColor);
ambientLightNode.setInfluencingBounds(bounds);
objRoot.addChild(ambientLightNode);
// Set up the directional lights
Color3f light1Color = new Color3f(1.0f, 1.0f, 0.9f);
Vector3f light1Direction = new Vector3f(4.0f, -7.0f, -12.0f);
Color3f light2Color = new Color3f(0.3f, 0.3f, 0.4f);
Vector3f light2Direction = new Vector3f(-6.0f, -2.0f, -1.0f);
DirectionalLight light1
= new DirectionalLight(light1Color, light1Direction);
light1.setInfluencingBounds(bounds);
objRoot.addChild(light1);
DirectionalLight light2
= new DirectionalLight(light2Color, light2Direction);
light2.setInfluencingBounds(bounds);
objRoot.addChild(light2);
}
protected class MouseListen extends MouseAdapter
{
public void mouseReleased(MouseEvent evt)
{
Object obj = evt.getSource();
if(obj == updateB )
{
String msg = "When you click on the button I want the text to update
the view.";
JOptionPane.showMessageDialog(null,msg,"Error",JOptionPane.ERROR_MESSAGE);
my_list[0] = field1.getText();
my_list[1] = field2.getText();
my_list[2] = field3.getText();
msg = my_list[0] + "\n" + my_list[1] + "\n" +
my_list[2] + "\n";
JOptionPane.showMessageDialog(null,msg,"Error",JOptionPane.ERROR_MESSAGE);
}
}
}
public static void main (String args[])
{
JFrame frame = new JFrame("Text View");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {System.exit(0);}
});
frame.setContentPane(new TextProblemJPanel("string 1","string 2","string 3"));
frame.pack();
frame.setVisible(true);
}
}
