Java tutorial
/* * %Z%%M% %I% %E% %U% * * ************************************************************** "Copyright (c) * 2001 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 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. * * You acknowledge that Software is not designed,licensed or intended for use in * the design, construction, operation or maintenance of any nuclear facility." * * *************************************************************************** */ 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); } } }