Line Types
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import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GraphicsConfiguration;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.text.NumberFormat;
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.ImageComponent;
import javax.media.j3d.ImageComponent2D;
import javax.media.j3d.LineArray;
import javax.media.j3d.LineAttributes;
import javax.media.j3d.Screen3D;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.View;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.vecmath.AxisAngle4f;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3f;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.universe.SimpleUniverse;
public class LineTypes extends Applet {
SimpleUniverse u;
boolean isApplication;
Canvas3D canvas;
View view;
/* image capture */
OffScreenCanvas3D offScreenCanvas;
float offScreenScale = 1.0f;
String snapImageString = "Snap Image";
// GUI elements
JTabbedPane tabbedPane;
// Temporaries that are reused
Transform3D tmpTrans = new Transform3D();
Vector3f tmpVector = new Vector3f();
AxisAngle4f tmpAxisAngle = new AxisAngle4f();
// colors for use in the cones
Color3f red = new Color3f(1.0f, 0.0f, 0.0f);
Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
// geometric constants
Point3f origin = new Point3f();
Vector3f yAxis = new Vector3f(0.0f, 1.0f, 0.0f);
// NumberFormat to print out floats with only two digits
NumberFormat nf;
// Returns the TransformGroup we will be editing to change the tranform
// on the lines
Group createLineTypes() {
Group lineGroup = new Group();
Appearance app = new Appearance();
ColoringAttributes ca = new ColoringAttributes(black,
ColoringAttributes.SHADE_FLAT);
app.setColoringAttributes(ca);
// Plain line
Point3f[] plaPts = new Point3f[2];
plaPts[0] = new Point3f(-0.9f, -0.7f, 0.0f);
plaPts[1] = new Point3f(-0.5f, 0.7f, 0.0f);
LineArray pla = new LineArray(2, LineArray.COORDINATES);
pla.setCoordinates(0, plaPts);
Shape3D plShape = new Shape3D(pla, app);
lineGroup.addChild(plShape);
// line pattern dot
Point3f[] dotPts = new Point3f[2];
dotPts[0] = new Point3f(-0.4f, -0.7f, 0.0f);
dotPts[1] = new Point3f(-0.0f, 0.7f, 0.0f);
LineArray dot = new LineArray(2, LineArray.COORDINATES);
dot.setCoordinates(0, dotPts);
LineAttributes dotLa = new LineAttributes();
dotLa.setLineWidth(2.0f);
dotLa.setLinePattern(LineAttributes.PATTERN_DOT);
Appearance dotApp = new Appearance();
dotApp.setLineAttributes(dotLa);
dotApp.setColoringAttributes(ca);
Shape3D dotShape = new Shape3D(dot, dotApp);
lineGroup.addChild(dotShape);
// line pattern dash
Point3f[] dashPts = new Point3f[2];
dashPts[0] = new Point3f(-0.0f, -0.7f, 0.0f);
dashPts[1] = new Point3f(0.4f, 0.7f, 0.0f);
LineArray dash = new LineArray(2, LineArray.COORDINATES);
dash.setCoordinates(0, dashPts);
LineAttributes dashLa = new LineAttributes();
dashLa.setLineWidth(4.0f);
dashLa.setLinePattern(LineAttributes.PATTERN_DASH);
Appearance dashApp = new Appearance();
dashApp.setLineAttributes(dashLa);
dashApp.setColoringAttributes(ca);
Shape3D dashShape = new Shape3D(dash, dashApp);
lineGroup.addChild(dashShape);
// line pattern dot-dash
Point3f[] dotDashPts = new Point3f[2];
dotDashPts[0] = new Point3f(0.5f, -0.7f, 0.0f);
dotDashPts[1] = new Point3f(0.9f, 0.7f, 0.0f);
LineArray dotDash = new LineArray(2, LineArray.COORDINATES);
dotDash.setCoordinates(0, dotDashPts);
LineAttributes dotDashLa = new LineAttributes();
dotDashLa.setLineWidth(4.0f);
dotDashLa.setLinePattern(LineAttributes.PATTERN_DASH_DOT);
Appearance dotDashApp = new Appearance();
dotDashApp.setLineAttributes(dotDashLa);
dotDashApp.setColoringAttributes(ca);
Shape3D dotDashShape = new Shape3D(dotDash, dotDashApp);
lineGroup.addChild(dotDashShape);
return lineGroup;
}
BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create a TransformGroup to scale the scene down by 3.5x
// TODO: move view platform instead of scene using orbit behavior
TransformGroup objScale = new TransformGroup();
Transform3D scaleTrans = new Transform3D();
//scaleTrans.set(1 / 3.5f); // scale down by 3.5x
objScale.setTransform(scaleTrans);
objRoot.addChild(objScale);
// Create a TransformGroup and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// the mouse behaviors code can modify it at runtime. Add it to the
// root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
objScale.addChild(objTrans);
// Add the primitives to the scene
objTrans.addChild(createLineTypes());
BoundingSphere bounds = new BoundingSphere(new Point3d(), 100.0);
Background bg = new Background(new Color3f(1.0f, 1.0f, 1.0f));
bg.setApplicationBounds(bounds);
objTrans.addChild(bg);
// set up the mouse rotation behavior
MouseRotate mr = new MouseRotate();
mr.setTransformGroup(objTrans);
mr.setSchedulingBounds(bounds);
mr.setFactor(0.007);
objTrans.addChild(mr);
// 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, 1.0f);
Vector3f light1Direction = new Vector3f(0.0f, -0.2f, -1.0f);
DirectionalLight light1 = new DirectionalLight(light1Color,
light1Direction);
light1.setInfluencingBounds(bounds);
objRoot.addChild(light1);
return objRoot;
}
public LineTypes() {
this(false);
}
public LineTypes(boolean isApplication) {
this.isApplication = isApplication;
}
public void init() {
// set up a NumFormat object to print out float with only 3 fraction
// digits
nf = NumberFormat.getInstance();
nf.setMaximumFractionDigits(3);
setLayout(new BorderLayout());
GraphicsConfiguration config = SimpleUniverse
.getPreferredConfiguration();
canvas = new Canvas3D(config);
add("Center", canvas);
// Create a simple scene and attach it to the virtual universe
BranchGroup scene = createSceneGraph();
u = new SimpleUniverse(canvas);
if (isApplication) {
offScreenCanvas = new OffScreenCanvas3D(config, true);
// set the size of the off-screen canvas based on a scale
// of the on-screen size
Screen3D sOn = canvas.getScreen3D();
Screen3D sOff = offScreenCanvas.getScreen3D();
Dimension dim = sOn.getSize();
dim.width *= 1.0f;
dim.height *= 1.0f;
sOff.setSize(dim);
sOff.setPhysicalScreenWidth(sOn.getPhysicalScreenWidth()
* offScreenScale);
sOff.setPhysicalScreenHeight(sOn.getPhysicalScreenHeight()
* offScreenScale);
// attach the offscreen canvas to the view
u.getViewer().getView().addCanvas3D(offScreenCanvas);
}
// This will move the ViewPlatform back a bit so the
// objects in the scene can be viewed.
u.getViewingPlatform().setNominalViewingTransform();
u.addBranchGraph(scene);
view = u.getViewer().getView();
add("South", guiPanel());
}
// create a panel with a tabbed pane holding each of the edit panels
JPanel guiPanel() {
JPanel panel = new JPanel();
panel.setLayout(new GridLayout(0, 1));
if (isApplication) {
JButton snapButton = new JButton(snapImageString);
snapButton.setActionCommand(snapImageString);
snapButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
doSnapshot();
}
});
panel.add(snapButton);
}
return panel;
}
void doSnapshot() {
Point loc = canvas.getLocationOnScreen();
offScreenCanvas.setOffScreenLocation(loc);
Dimension dim = canvas.getSize();
dim.width *= offScreenScale;
dim.height *= offScreenScale;
nf.setMinimumIntegerDigits(3);
offScreenCanvas.snapImageFile("lineTypes", dim.width, dim.height);
nf.setMinimumIntegerDigits(0);
}
public void destroy() {
u.removeAllLocales();
}
// The following allows LineTypes to be run as an application
// as well as an applet
//
public static void main(String[] args) {
new MainFrame(new LineTypes(true), 600, 600);
}
}
class OffScreenCanvas3D extends Canvas3D {
OffScreenCanvas3D(GraphicsConfiguration graphicsConfiguration,
boolean offScreen) {
super(graphicsConfiguration, offScreen);
}
private BufferedImage doRender(int width, int height) {
BufferedImage bImage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
ImageComponent2D buffer = new ImageComponent2D(
ImageComponent.FORMAT_RGB, bImage);
//buffer.setYUp(true);
setOffScreenBuffer(buffer);
renderOffScreenBuffer();
waitForOffScreenRendering();
bImage = getOffScreenBuffer().getImage();
return bImage;
}
void snapImageFile(String filename, int width, int height) {
BufferedImage bImage = doRender(width, height);
/*
* JAI: RenderedImage fImage = JAI.create("format", bImage,
* DataBuffer.TYPE_BYTE); JAI.create("filestore", fImage, filename +
* ".tif", "tiff", null);
*/
/* No JAI: */
try {
FileOutputStream fos = new FileOutputStream(filename + ".jpg");
BufferedOutputStream bos = new BufferedOutputStream(fos);
JPEGImageEncoder jie = JPEGCodec.createJPEGEncoder(bos);
JPEGEncodeParam param = jie.getDefaultJPEGEncodeParam(bImage);
param.setQuality(1.0f, true);
jie.setJPEGEncodeParam(param);
jie.encode(bImage);
bos.flush();
fos.close();
} catch (Exception e) {
System.out.println(e);
}
}
}
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