Java tutorial
/* * @(#)InterleavedNIOBuffer.java 1.4 02/10/21 13:42:27 * * Copyright (c) 1996-2002 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.awt.Container; import java.awt.Frame; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.nio.ByteBuffer; import java.nio.ByteOrder; import java.nio.FloatBuffer; import javax.media.j3d.AmbientLight; import javax.media.j3d.Appearance; 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.GeometryArray; import javax.media.j3d.IndexedTriangleArray; import javax.media.j3d.IndexedTriangleStripArray; import javax.media.j3d.J3DBuffer; import javax.media.j3d.Material; import javax.media.j3d.RenderingAttributes; import javax.media.j3d.Shape3D; import javax.media.j3d.Texture; import javax.media.j3d.TextureAttributes; import javax.media.j3d.TextureUnitState; import javax.media.j3d.Transform3D; import javax.media.j3d.TransformGroup; import javax.media.j3d.TransparencyAttributes; import javax.media.j3d.TriangleArray; import javax.media.j3d.TriangleStripArray; import javax.swing.BoxLayout; import javax.swing.JApplet; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.border.TitledBorder; import javax.vecmath.Color3f; import javax.vecmath.Point2f; import javax.vecmath.Point3d; import javax.vecmath.Point3f; import javax.vecmath.Vector3f; import com.sun.j3d.utils.applet.MainFrame; import com.sun.j3d.utils.behaviors.vp.OrbitBehavior; import com.sun.j3d.utils.image.TextureLoader; import com.sun.j3d.utils.universe.SimpleUniverse; import com.sun.j3d.utils.universe.ViewingPlatform; public class InterleavedNIOBuffer extends JApplet implements ActionListener { RenderingAttributes ra; ColoringAttributes ca; Material mat; Appearance app; JComboBox geomType; JCheckBox transparency; JCheckBox textureBox; Shape3D shape; TransparencyAttributes transp; GeometryArray tetraRegular, tetraStrip, tetraIndexed, tetraIndexedStrip; GeometryArray[] geoArrays = new GeometryArray[4]; // Globally used colors Color3f white = new Color3f(1.0f, 1.0f, 1.0f); Color3f red = new Color3f(1.0f, 0.0f, 0.0f); Color3f green = new Color3f(0.0f, 1.0f, 0.0f); Color3f blue = new Color3f(0.0f, 0.0f, 1.0f); Color3f[] colors = { white, red, green, blue }; private static final float sqrt3 = (float) Math.sqrt(3.0); private static final float sqrt3_3 = sqrt3 / 3.0f; private static final float sqrt24_3 = (float) Math.sqrt(24.0) / 3.0f; private static final float ycenter = 0.5f * sqrt24_3; private static final float zcenter = -sqrt3_3; private static final Point3f p1 = new Point3f(-1.0f, -ycenter, -zcenter); private static final Point3f p2 = new Point3f(1.0f, -ycenter, -zcenter); private static final Point3f p3 = new Point3f(0.0f, -ycenter, -sqrt3 - zcenter); private static final Point3f p4 = new Point3f(0.0f, sqrt24_3 - ycenter, 0.0f); private static final Point2f t1 = new Point2f(0.0f, 0.0f); private static final Point2f t2 = new Point2f(0.5f, 1.0f); private static final Point2f t3 = new Point2f(1.0f, 0.0f); private static final Point2f t4 = new Point2f(1.0f, 1.0f); private static final Color3f c1 = new Color3f(1.0f, 0.0f, 0.0f); private static final Color3f c2 = new Color3f(0.0f, 1.0f, 0.0f); private static final Color3f c3 = new Color3f(0.0f, 1.0f, 1.0f); private static final Color3f c4 = new Color3f(1.0f, 1.0f, 0.0f); private static final float[] interleaved = { t1.x, t1.y, t1.x, t1.y, c1.x, c1.y, c1.z, // front face p1.x, p1.y, p1.z, // front face t2.x, t2.y, t2.x, t2.y, c2.x, c2.y, c2.z, p2.x, p2.y, p2.z, t4.x, t4.y, t4.x, t4.y, c4.x, c4.y, c4.z, p4.x, p4.y, p4.z, t1.x, t1.y, t1.x, t1.y, c1.x, c1.y, c1.z, // left, back face p1.x, p1.y, p1.z, // left, back face t4.x, t4.y, t4.x, t4.y, c4.x, c4.y, c4.z, p4.x, p4.y, p4.z, t3.x, t3.y, t3.x, t3.y, c3.x, c3.y, c3.z, p3.x, p3.y, p3.z, t2.x, t2.y, t2.x, t2.y, c2.x, c2.y, c2.z, // right, back face p2.x, p2.y, p2.z, // right, back face t3.x, t3.y, t3.x, t3.y, c3.x, c3.y, c3.z, p3.x, p3.y, p3.z, t4.x, t4.y, t4.x, t4.y, c4.x, c4.y, c4.z, p4.x, p4.y, p4.z, t1.x, t1.y, t1.x, t1.y, c1.x, c1.y, c1.z, // bottom face p1.x, p1.y, p1.z, // bottom face t3.x, t3.y, t3.x, t3.y, c3.x, c3.y, c3.z, p3.x, p3.y, p3.z, t2.x, t2.y, t2.x, t2.y, c2.x, c2.y, c2.z, p2.x, p2.y, p2.z, }; private static final float[] indexedInterleaved = { t1.x, t1.y, t1.x, t1.y, c1.x, c1.y, c1.z, p1.x, p1.y, p1.z, t2.x, t2.y, t2.x, t2.y, c2.x, c2.y, c2.z, p2.x, p2.y, p2.z, t3.x, t3.y, t3.x, t3.y, c3.x, c3.y, c3.z, p3.x, p3.y, p3.z, t4.x, t4.y, t4.x, t4.y, c4.x, c4.y, c4.z, p4.x, p4.y, p4.z, }; private static final int[] indices = { 0, 1, 3, 0, 3, 2, 1, 2, 3, 0, 2, 1 }; private int[] stripVertexCounts = { 3, 3, 3, 3 }; TextureUnitState textureUnitState[] = new TextureUnitState[2]; Texture tex1; Texture tex2; private java.net.URL texImage1 = null; private java.net.URL texImage2 = null; private SimpleUniverse u; private J3DBuffer interleavedBuffer; private J3DBuffer indexedInterleavedBuffer; void createInterleavedBuffers() { int size; ByteOrder order = ByteOrder.nativeOrder(); size = (2 + 2 + 3 + 3) * 3 * 4; FloatBuffer vertex = ByteBuffer.allocateDirect(size * 4).order(order).asFloatBuffer(); vertex.put(interleaved, 0, size); interleavedBuffer = new J3DBuffer(vertex); size = (2 + 2 + 3 + 3) * 4; FloatBuffer indexedVertex = ByteBuffer.allocateDirect(size * 4).order(order).asFloatBuffer(); indexedVertex.put(indexedInterleaved, 0, size); indexedInterleavedBuffer = new J3DBuffer(indexedVertex); } BranchGroup createSceneGraph() { BranchGroup objRoot = new BranchGroup(); // Set up attributes to render lines app = new Appearance(); app.setCapability(Appearance.ALLOW_TEXTURE_UNIT_STATE_WRITE); transp = new TransparencyAttributes(); transp.setTransparency(0.5f); transp.setCapability(TransparencyAttributes.ALLOW_MODE_WRITE); transp.setTransparencyMode(TransparencyAttributes.NONE); app.setTransparencyAttributes(transp); // load textures TextureAttributes texAttr1 = new TextureAttributes(); texAttr1.setTextureMode(TextureAttributes.DECAL); TextureAttributes texAttr2 = new TextureAttributes(); texAttr2.setTextureMode(TextureAttributes.MODULATE); TextureLoader tex = new TextureLoader(texImage1, new String("RGB"), this); if (tex == null) return null; tex1 = tex.getTexture(); tex = new TextureLoader(texImage2, new String("RGB"), this); if (tex == null) return null; tex2 = tex.getTexture(); textureUnitState[0] = new TextureUnitState(tex1, texAttr1, null); textureUnitState[1] = new TextureUnitState(tex2, texAttr2, null); createInterleavedBuffers(); tetraRegular = createGeometry(1); tetraStrip = createGeometry(2); tetraIndexed = createGeometry(3); tetraIndexedStrip = createGeometry(4); geoArrays[0] = tetraRegular; geoArrays[1] = tetraStrip; geoArrays[2] = tetraIndexed; geoArrays[3] = tetraIndexedStrip; shape = new Shape3D(tetraRegular, app); shape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE); Transform3D t = new Transform3D(); // move the object upwards t.set(new Vector3f(0.0f, 0.3f, 0.0f)); // rotate the shape Transform3D temp = new Transform3D(); temp.rotX(Math.PI / 4.0d); t.mul(temp); temp.rotY(Math.PI / 4.0d); t.mul(temp); // Shrink the object t.setScale(0.6); TransformGroup trans = new TransformGroup(t); trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); objRoot.addChild(trans); trans.addChild(shape); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); // Set up the global lights Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f); Vector3f lDir1 = new Vector3f(-1.0f, -1.0f, -1.0f); Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f); AmbientLight aLgt = new AmbientLight(alColor); aLgt.setInfluencingBounds(bounds); DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1); lgt1.setInfluencingBounds(bounds); objRoot.addChild(aLgt); objRoot.addChild(lgt1); // Let Java 3D perform optimizations on this scene graph. objRoot.compile(); return objRoot; } JPanel createGeometryByReferencePanel() { JPanel panel = new JPanel(); panel.setBorder(new TitledBorder("Geometry Type")); String values[] = { "Array", "Strip", "Indexed", "IndexedStrip" }; geomType = new JComboBox(values); geomType.setLightWeightPopupEnabled(false); geomType.addActionListener(this); geomType.setSelectedIndex(0); panel.add(new JLabel("Geometry Type")); panel.add(geomType); transparency = new JCheckBox("EnableTransparency", false); transparency.addActionListener(this); panel.add(transparency); textureBox = new JCheckBox("EnableTexture", false); textureBox.addActionListener(this); panel.add(textureBox); return panel; } public InterleavedNIOBuffer() { } public InterleavedNIOBuffer(java.net.URL texURL1, java.net.URL texURL2) { texImage1 = texURL1; texImage2 = texURL2; } public void init() { // create textures if (texImage1 == null) { // the path to the image for an applet try { texImage1 = new java.net.URL(getCodeBase().toString() + "/bg.jpg"); } catch (java.net.MalformedURLException ex) { System.out.println(ex.getMessage()); System.exit(1); } } if (texImage2 == null) { // the path to the image for an applet try { texImage2 = new java.net.URL(getCodeBase().toString() + "/one.jpg"); } catch (java.net.MalformedURLException ex) { System.out.println(ex.getMessage()); System.exit(1); } } Container contentPane = getContentPane(); Canvas3D c = new Canvas3D(SimpleUniverse.getPreferredConfiguration()); contentPane.add("Center", c); BranchGroup scene = createSceneGraph(); // SimpleUniverse is a Convenience Utility class u = new SimpleUniverse(c); // add mouse behaviors to the viewingPlatform ViewingPlatform viewingPlatform = u.getViewingPlatform(); // This will move the ViewPlatform back a bit so the // objects in the scene can be viewed. viewingPlatform.setNominalViewingTransform(); // add Orbit behavior to the viewing platform OrbitBehavior orbit = new OrbitBehavior(c, OrbitBehavior.REVERSE_ALL); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); orbit.setSchedulingBounds(bounds); viewingPlatform.setViewPlatformBehavior(orbit); u.addBranchGraph(scene); // Create GUI JPanel p = new JPanel(); BoxLayout boxlayout = new BoxLayout(p, BoxLayout.Y_AXIS); p.add(createGeometryByReferencePanel()); p.setLayout(boxlayout); contentPane.add("South", p); } public void destroy() { u.cleanup(); } public void actionPerformed(ActionEvent e) { Object target = e.getSource(); if (target == geomType) { shape.setGeometry(geoArrays[geomType.getSelectedIndex()]); } else if (target == transparency) { if (transparency.isSelected()) { transp.setTransparencyMode(TransparencyAttributes.BLENDED); } else { transp.setTransparencyMode(TransparencyAttributes.NONE); } } else if (target == textureBox) { if (textureBox.isSelected()) { app.setTextureUnitState(textureUnitState); } else { app.setTextureUnitState(null); } } } public static void main(String[] args) { java.net.URL texURL1 = null; java.net.URL texURL2 = null; // the path to the image for an application try { texURL1 = new java.net.URL("file:bg.jpg"); texURL2 = new java.net.URL("file:one.jpg"); } catch (java.net.MalformedURLException ex) { System.out.println(ex.getMessage()); System.exit(1); } Frame frame = new MainFrame(new InterleavedNIOBuffer(texURL1, texURL2), 800, 800); } public GeometryArray createGeometry(int type) { GeometryArray tetra = null; int texCoordSetMap[] = { 0, 0 }; if (type == 1) { tetra = new TriangleArray(12, TriangleArray.COORDINATES | TriangleArray.COLOR_3 | /* * TriangleArray.NORMAL_3| */ TriangleArray.TEXTURE_COORDINATE_2 | TriangleArray.INTERLEAVED | TriangleArray.BY_REFERENCE | TriangleArray.USE_NIO_BUFFER, 2, texCoordSetMap); tetra.setInterleavedVertexBuffer(interleavedBuffer); } else if (type == 2) { tetra = new TriangleStripArray(12, TriangleStripArray.COORDINATES | TriangleStripArray.COLOR_3 | /* * TriangleArray.NORMAL_3| */ TriangleArray.TEXTURE_COORDINATE_2 | TriangleStripArray.INTERLEAVED | TriangleStripArray.BY_REFERENCE | TriangleStripArray.USE_NIO_BUFFER, 2, texCoordSetMap, stripVertexCounts); tetra.setInterleavedVertexBuffer(interleavedBuffer); } else if (type == 3) { // Indexed Geometry tetra = new IndexedTriangleArray(4, IndexedTriangleArray.COORDINATES | IndexedTriangleArray.COLOR_3 | /* * IndexedTriangleArray.NORMAL_3| */ IndexedTriangleArray.TEXTURE_COORDINATE_2 | IndexedTriangleArray.INTERLEAVED | IndexedTriangleArray.BY_REFERENCE | IndexedTriangleArray.USE_NIO_BUFFER | IndexedTriangleArray.USE_COORD_INDEX_ONLY, 2, texCoordSetMap, 12); tetra.setInterleavedVertexBuffer(indexedInterleavedBuffer); ((IndexedTriangleArray) tetra).setCoordinateIndices(0, indices); ((IndexedTriangleArray) tetra).setColorIndices(0, indices); ((IndexedTriangleArray) tetra).setTextureCoordinateIndices(0, 0, indices); ((IndexedTriangleArray) tetra).setTextureCoordinateIndices(1, 0, indices); } else if (type == 4) { // Indexed strip geometry tetra = new IndexedTriangleStripArray(4, IndexedTriangleStripArray.COORDINATES | IndexedTriangleStripArray.COLOR_3 | /* * IndexedTriangleArray.NORMAL_3| */ IndexedTriangleArray.TEXTURE_COORDINATE_2 | IndexedTriangleStripArray.INTERLEAVED | IndexedTriangleStripArray.BY_REFERENCE | IndexedTriangleStripArray.USE_NIO_BUFFER, //IndexedTriangleStripArray.USE_COORD_INDEX_ONLY, 2, texCoordSetMap, 12, stripVertexCounts); tetra.setInterleavedVertexBuffer(indexedInterleavedBuffer); ((IndexedTriangleStripArray) tetra).setCoordinateIndices(0, indices); ((IndexedTriangleStripArray) tetra).setColorIndices(0, indices); ((IndexedTriangleStripArray) tetra).setTextureCoordinateIndices(0, 0, indices); ((IndexedTriangleStripArray) tetra).setTextureCoordinateIndices(1, 0, indices); } else if (type == 5) { // Interleaved array } return tetra; } }