/* * @(#)HelloUniverse.java 1.48 00/02/10 13:14:09 * * Copyright (c) 1996-2000 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.Graphics; import java.awt.event.*; import java.awt.GraphicsConfiguration; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.geometry.ColorCube; import com.sun.j3d.utils.universe.*; import javax.media.j3d.*; import javax.vecmath.*; import java.awt.*; import java.awt.geom.*; import java.awt.image.BufferedImage; import java.awt.font.TextLayout; import java.awt.font.FontRenderContext; import java.io.*; import java.util.*; public class HelloUniverse extends Applet { public BranchGroup createSceneGraph(Canvas3D canvas) { // Create the root of the branch graph BranchGroup objRoot = new BranchGroup(); // Create the transform group node and initialize it to the // identity. Enable the TRANSFORM_WRITE capability so that // our behavior code can modify it at runtime. Add it to the // root of the subgraph. TransformGroup objTrans = new TransformGroup(); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); objRoot.addChild(objTrans); // Create a simple shape leaf node, add it to the scene graph. objTrans.addChild(new ColorCube(0.4)); // 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, 4000, 0, 0, 0, 0, 0); RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, 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); objTrans.addChild(rotator); // Have Java 3D perform optimizations on this scene graph. objRoot.compile(); return objRoot; } class HelloCanvas3D extends Canvas3D { private GraphicsContext3D gc; private J3DGraphics2D g2 = null; private Dimension d = new Dimension(0, 0); private BufferedImage mOffScreenImg; private Graphics2D mOffScreenGfx; public HelloCanvas3D(GraphicsConfiguration gcfg) { super(gcfg,false); mOffScreenImg = new BufferedImage(100, 100, BufferedImage.TYPE_4BYTE_ABGR); mOffScreenGfx = (Graphics2D)mOffScreenImg.getGraphics(); } public void postRender() { if (g2 == null) { g2 = this.getGraphics2D(); g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); } this.getSize(d); if (mOffScreenImg.getWidth() != d.width || mOffScreenImg.getHeight() != d.height) { mOffScreenImg = new BufferedImage(d.width, d.height, BufferedImage.TYPE_4BYTE_ABGR); mOffScreenGfx = (Graphics2D)mOffScreenImg.getGraphics(); } // SCALE PROBLEM //drawDemo(d.width, d.height, mOffScreenGfx); //g2.drawAndFlushImage(mOffScreenImg, 0, 0, null); // END SCALE PROBLEM // WORKS drawDemo(d.width, d.height, g2); g2.flush(true); // END WORKS } } public void drawDemo(int w, int h, Graphics2D g2) { FontRenderContext frc = g2.getFontRenderContext(); Font font = g2.getFont(); TextLayout tl = new TextLayout("Dashes", font, frc); float sw = (float) tl.getBounds().getWidth(); float sh = (float) tl.getAscent() + tl.getDescent(); g2.setColor(Color.green); tl.draw(g2, (float) (w/2-sw/2), sh+5); BasicStroke dotted = new BasicStroke(3, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 0, new float[]{0,6,0,6}, 0); g2.setStroke(dotted); g2.drawRect(3,3,w-6,h-6); int x = 0; int y = h-34; BasicStroke bs[] = new BasicStroke[6]; float j = 1.1f; for (int i = 0; i < bs.length; i++, j += 1.0f) { float dash[] = { j }; BasicStroke b = new BasicStroke(1.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, dash, 0.0f); g2.setStroke(b); g2.drawLine(20, y, w-20, y); bs[i] = new BasicStroke(3.0f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 10.0f, dash, 0.0f); y += 5; } Shape shape = null; y = 0; for (int i = 0; i < 6; i++) { x = (i == 0 || i == 3) ? (w/3-w/5)/2 : x + w/3; y = (i <= 2) ? (int) sh+h/12 : h/2; g2.setStroke(bs[i]); g2.translate(x, y); switch (i) { case 0 : shape = new Arc2D.Float(0.0f, 0.0f, w/5, h/4, 45, 270, Arc2D.PIE); break; case 1 : shape = new Ellipse2D.Float(0.0f, 0.0f, w/5, h/4); break; case 2 : shape = new RoundRectangle2D.Float(0.0f, 0.0f, w/5, h/4, 10.0f, 10.0f); break; case 3 : shape = new Rectangle2D.Float(0.0f, 0.0f, w/5, h/4); break; case 4 : shape = new QuadCurve2D.Float(0.0f,0.0f,w/10, h/2,w/5,0.0f); break; case 5 : shape = new CubicCurve2D.Float(0.0f,0.0f,w/15,h/2, w/10,h/4,w/5,0.0f); break; } g2.draw(shape); g2.translate(-x, -y); } } public HelloUniverse() { setLayout(new BorderLayout()); GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration(); HelloCanvas3D c = new HelloCanvas3D(config); add("Center", c); // Create a simple scene and attach it to the virtual universe BranchGroup scene = createSceneGraph(c); SimpleUniverse u = new SimpleUniverse(c); // This will move the ViewPlatform back a bit so the // objects in the scene can be viewed. u.getViewingPlatform().setNominalViewingTransform(); u.addBranchGraph(scene); } // // The following allows HelloUniverse to be run as an application // as well as an applet // public static void main(String[] args) { new MainFrame(new HelloUniverse(), 256, 256); } }