/***************************************************************************** * J3D.org Copyright (c) 2000 * Java Source * * This source is licensed under the GNU LGPL v2.1 * Please read http://www.gnu.org/copyleft/lgpl.html for more information * * This software comes with the standard NO WARRANTY disclaimer for any * purpose. Use it at your own risk. If there's a problem you get to fix it. * ****************************************************************************/ // Standard imports import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.media.j3d.*; import javax.vecmath.*; import java.io.File; import java.io.IOException; import java.util.HashMap; // Application Specific imports import org.j3d.geom.Axis; import org.j3d.loaders.HeightMapTerrainData; import org.j3d.terrain.AppearanceGenerator; import org.j3d.terrain.Landscape; import org.j3d.terrain.roam.SplitMergeLandscape; import org.j3d.texture.TextureCache; import org.j3d.texture.TextureCacheFactory; import org.j3d.ui.navigation.MouseViewHandler; import org.j3d.ui.navigation.NavigationStateManager; import org.j3d.ui.navigation.NavigationState; import org.j3d.util.interpolator.ColorInterpolator; import org.j3d.util.frustum.ViewFrustum; /** * Demonstration of the ROAM code. * * * @author Justin Couch * @version $Revision: 1.2 $ */ public class ROAMTest extends DemoFrame implements ItemListener, AppearanceGenerator { private static final double BACK_CLIP_DISTANCE = 3000.0; private static final double FRONT_CLIP_DISTANCE = 1; /** Test static landscape */ private static final float[][] STATIC_HEIGHTS = { {0, 0, 0, 0, 0}, {0, 5, 0, 5, 0}, {0, 0, 8, 0, 0}, {0, 5, 0, 5, 0}, {0, 0, 0, 0, 0} }; /** Step details for the static heights */ private static final Point2d STATIC_STEPS = new Point2d(20, 20); /** The name of the texture file to go onto the static terrain */ private static final String STATIC_TEXTURE = "textures/single32x32.jpg"; /** The main canvas that we are navigating on */ private Canvas3D navCanvas; /** Global material instance to use */ private Material material; /** Global polygon attributes to use */ private PolygonAttributes polyAttr; private MouseViewHandler groundNav; /** The view frustum for the ground canvas */ private ViewFrustum viewFrustum; /** The landscape we are navigating around */ private Landscape landscape; /** The branchgroup to add our terrain to */ private BranchGroup terrainGroup; /** Mapping of the button to the polygon mode value */ private HashMap polyModeMap; /** The color interpolator for doing height interpolations with */ private ColorInterpolator heightRamp; /** Button to show static terrain data */ private JRadioButton staticButton; /** Button to show tiled terrain data */ private JRadioButton tiledButton; /** * Construct a new demo with no geometry currently showing, but the * default type is set to quads. */ public ROAMTest() { super("Terrain Culling Demo"); navCanvas = createCanvas(); Cursor curse = Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR); navCanvas.setCursor(curse); add(navCanvas, BorderLayout.CENTER); JPanel p1 = new JPanel(new FlowLayout()); p1.add(new JLabel("Terrain type:")); ButtonGroup grp = new ButtonGroup(); staticButton = new JRadioButton("Static"); staticButton.addItemListener(this); grp.add(staticButton); p1.add(staticButton); tiledButton = new JRadioButton("Tiled"); tiledButton.addItemListener(this); grp.add(tiledButton); p1.add(tiledButton); add(p1, BorderLayout.SOUTH); // Panel for the polygon mode style polyModeMap = new HashMap(); JPanel p2 = new JPanel(new GridLayout(4, 1)); p2.add(new JLabel("Render As...")); grp = new ButtonGroup(); JRadioButton button = new JRadioButton("Polygons", true); button.addItemListener(this); grp.add(button); p2.add(button); polyModeMap.put(button, new Integer(PolygonAttributes.POLYGON_FILL)); button = new JRadioButton("Lines"); button.addItemListener(this); grp.add(button); p2.add(button); polyModeMap.put(button, new Integer(PolygonAttributes.POLYGON_LINE)); button = new JRadioButton("Points"); button.addItemListener(this); grp.add(button); p2.add(button); polyModeMap.put(button, new Integer(PolygonAttributes.POLYGON_POINT)); JPanel p3 = new JPanel(new BorderLayout()); p3.add(p2, BorderLayout.NORTH); add(p3, BorderLayout.EAST); groundNav = new MouseViewHandler(); groundNav.setCanvas(navCanvas); groundNav.setButtonNavigation(MouseEvent.BUTTON1_MASK, NavigationState.FLY_STATE); groundNav.setButtonNavigation(MouseEvent.BUTTON2_MASK, NavigationState.TILT_STATE); groundNav.setButtonNavigation(MouseEvent.BUTTON3_MASK, NavigationState.PAN_STATE); NavigationStateManager gnd_nav_mgr = new NavigationStateManager(navCanvas); gnd_nav_mgr.setMouseHandler(groundNav); buildScene(); viewFrustum = new ViewFrustum(navCanvas); // Now set up the material and appearance handling for the generator material = new Material(); material.setLightingEnable(true); polyAttr = new PolygonAttributes(); polyAttr.setCapability(PolygonAttributes.ALLOW_MODE_WRITE); heightRamp = new ColorInterpolator(ColorInterpolator.HSV_SPACE); heightRamp.addRGBKeyFrame(-20, 0, 0, 1, 0); heightRamp.addRGBKeyFrame(0, 0, 0.7f, 0.95f, 0); heightRamp.addRGBKeyFrame(5, 1, 1, 0, 0); heightRamp.addRGBKeyFrame(10, 0, 0.6f, 0, 0); heightRamp.addRGBKeyFrame(100, 0, 1, 0, 0); heightRamp.addRGBKeyFrame(1000, 0.6f, 0.7f, 0, 0); heightRamp.addRGBKeyFrame(1500, 0.5f, 0.5f, 0.3f, 0); heightRamp.addRGBKeyFrame(2500, 1, 1, 1, 0); } //---------------------------------------------------------- // Methods required by ItemListener //---------------------------------------------------------- /** * Process the change of state request from the colour selector panel. * * @param evt The event that caused this method to be called */ public void itemStateChanged(ItemEvent evt) { if(evt.getStateChange() != ItemEvent.SELECTED) return; Object src = evt.getSource(); if(src == staticButton) { loadTerrain(true); } else if(src == tiledButton) { loadTerrain(false); } else { Integer mode_int = (Integer)polyModeMap.get(src); polyAttr.setPolygonMode(mode_int.intValue()); } } //---------------------------------------------------------- // Methods required by AppearanceGenerator //---------------------------------------------------------- /** * Create a new appearance instance. We set them all up with different * appearance instances, but share the material information. * * @return The new appearance instance to use */ public Appearance createAppearance() { Appearance app = new Appearance(); app.setMaterial(material); app.setPolygonAttributes(polyAttr); return app; } //---------------------------------------------------------- // Internal convenience methods //---------------------------------------------------------- /** * Build the scenegraph for the canvas */ private void buildScene() { Color3f ambientBlue = new Color3f(0.0f, 0.02f, 0.5f); Color3f white = new Color3f(1, 1, 1); Color3f black = new Color3f(0.0f, 0.0f, 0.0f); Color3f blue = new Color3f(0.00f, 0.20f, 0.80f); Color3f specular = new Color3f(0.7f, 0.7f, 0.7f); VirtualUniverse universe = new VirtualUniverse(); Locale locale = new Locale(universe); BranchGroup view_group = new BranchGroup(); BranchGroup world_object_group = new BranchGroup(); PhysicalBody body = new PhysicalBody(); PhysicalEnvironment env = new PhysicalEnvironment(); Point3d origin = new Point3d(0, 0, 0); BoundingSphere light_bounds = new BoundingSphere(origin, BACK_CLIP_DISTANCE); DirectionalLight headlight = new DirectionalLight(); headlight.setColor(white); headlight.setInfluencingBounds(light_bounds); // // View group for the ground navigation system that the // roam code will apply to. // ViewPlatform gnd_camera = new ViewPlatform(); Transform3D angle = new Transform3D(); angle.setTranslation(new Vector3d(0, 1, 5)); TransformGroup gnd_view_tg = new TransformGroup(angle); gnd_view_tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); gnd_view_tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); gnd_view_tg.addChild(gnd_camera); gnd_view_tg.addChild(headlight); View gnd_view = new View(); gnd_view.setBackClipDistance(BACK_CLIP_DISTANCE); gnd_view.setFrontClipDistance(FRONT_CLIP_DISTANCE); gnd_view.setPhysicalBody(body); gnd_view.setPhysicalEnvironment(env); gnd_view.addCanvas3D(navCanvas); gnd_view.attachViewPlatform(gnd_camera); groundNav.setViewInfo(gnd_view, gnd_view_tg); groundNav.setNavigationSpeed(50.0f); view_group.addChild(gnd_view_tg); view_group.addChild(groundNav.getTimerBehavior()); // Just an axis for reference world_object_group.addChild(new Axis()); // Create a new branchgroup that is for the geometry. Initially starts // with a null child at position zero so that we only need to write the // child and not extend. One less capability to set is good. terrainGroup = new BranchGroup(); terrainGroup.setCapability(Group.ALLOW_CHILDREN_WRITE); terrainGroup.setCapability(Group.ALLOW_CHILDREN_EXTEND); // terrainGroup.addChild(null); // Set up corner markers world_object_group.addChild(new Axis()); world_object_group.addChild(terrainGroup); // Add everything to the locale locale.addBranchGraph(view_group); locale.addBranchGraph(world_object_group); } /** * Load the terrain and get it read to roll. If the texture file is not * specified then no texture will be loaded and colour information is * used instead. * * @param isStatic true if this is the static data to load * @param textureName The name of the texture file, or null */ private void loadTerrain(boolean isStatic) { try { if(landscape != null) { landscape.setAppearanceGenerator(null); landscape.detach(); landscape = null; } System.gc(); System.out.println("Loading terrain Please wait"); HeightMapTerrainData terrain = null; if(isStatic) { terrain = new HeightMapTerrainData(STATIC_HEIGHTS, false, STATIC_STEPS); terrain.setColorInterpolator(heightRamp); System.out.println("Terrain loading complete"); System.out.println("Loading texture file"); TextureCache t_cache = TextureCacheFactory.getCache(); Texture texture = t_cache.fetchTexture(STATIC_TEXTURE); if(texture != null) terrain.setTexture(texture); System.out.println("Finished texture"); System.out.println("Building landscape"); landscape = new SplitMergeLandscape(viewFrustum, terrain, 2); } else { // tiled terrain code to go here. terrain = new HeightMapTerrainData(STATIC_HEIGHTS, false, STATIC_STEPS); landscape = new SplitMergeLandscape(viewFrustum, terrain, 2); } landscape.setCapability(BranchGroup.ALLOW_DETACH); landscape.setAppearanceGenerator(this); landscape.initialize(new Point3f(0, 0, 1), new Vector3f(0, 0, -1)); groundNav.setFrameUpdateListener(landscape); terrainGroup.addChild(landscape); System.out.println("Ready for rendering"); } catch(IOException ioe) { System.out.println("I/O Error " + ioe); ioe.printStackTrace(); } } public static void main(String[] argv) { ROAMTest demo = new ROAMTest(); demo.setSize(600, 400); demo.setVisible(true); } }