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+/*
+ * $RCSfile$
+ *
+ * Copyright (c) 2005 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:
+ *
+ * - Redistribution 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 MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
+ * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
+ * USING, MODIFYING OR DISTRIBUTING THIS 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 THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed, licensed or
+ * intended for use in the design, construction, operation or
+ * maintenance of any nuclear facility.
+ *
+ * $Revision$
+ * $Date$
+ * $State$
+ */
+
+import java.applet.Applet;
+import java.awt.*;
+import java.io.*;
+import com.sun.j3d.utils.applet.MainFrame;
+import com.sun.j3d.utils.geometry.Sphere;
+import com.sun.j3d.utils.shader.StringIO;
+import com.sun.j3d.utils.universe.*;
+import javax.media.j3d.*;
+import javax.vecmath.*;
+import java.util.Enumeration;
+import java.net.URL;
+import java.net.MalformedURLException;
+
+/**
+ * Simple GLSL Shader test program
+ */
+public class SphereGLSL extends Applet {
+
+ // Constants for type of light to use
+ private static final int DIRECTIONAL_LIGHT = 0;
+ private static final int POINT_LIGHT = 1;
+ private static final int SPOT_LIGHT = 2;
+
+ // Flag indicates type of lights: directional, point, or spot
+ // lights. This flag is set based on command line argument
+ private static int lightType = DIRECTIONAL_LIGHT;
+
+ private SimpleUniverse u = null;
+
+ public BranchGroup createSceneGraph(SimpleUniverse u) {
+ Color3f eColor = new Color3f(0.0f, 0.0f, 0.0f);
+ Color3f sColor = new Color3f(1.0f, 1.0f, 1.0f);
+ Color3f objColor = new Color3f(0.6f, 0.6f, 0.6f);
+ Color3f lColor1 = new Color3f(1.0f, 0.0f, 0.0f);
+ Color3f lColor2 = new Color3f(0.0f, 1.0f, 0.0f);
+ Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
+ Color3f bgColor = new Color3f(0.05f, 0.05f, 0.2f);
+
+ Transform3D t;
+
+ // Create the root of the branch graph
+ BranchGroup objRoot = new BranchGroup();
+
+ // Create a Transformgroup to scale all objects so they
+ // appear in the scene.
+ TransformGroup objScale = new TransformGroup();
+ Transform3D t3d = new Transform3D();
+ t3d.setScale(0.4);
+ objScale.setTransform(t3d);
+ objRoot.addChild(objScale);
+
+ // Create a bounds for the background and lights
+ BoundingSphere bounds =
+ new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+
+ // Set up the background
+ Background bg = new Background(bgColor);
+ bg.setApplicationBounds(bounds);
+ objScale.addChild(bg);
+
+ // Create a Sphere object, generate one copy of the sphere,
+ // and add it into the scene graph.
+ ShaderAppearance a = new ShaderAppearance();
+ Material m = new Material(objColor, eColor, objColor, sColor, 100.0f);
+ m.setLightingEnable(true);
+ String vertexProgram = null;
+ String fragmentProgram = null;
+ try {
+ vertexProgram = StringIO.readFully("./simple.vert");
+ fragmentProgram = StringIO.readFully("./simple.frag");
+ }
+ catch (IOException e) {
+ /*
+ e.printStackTrace();
+ System.exit(1);
+ */
+ System.err.println(e);
+ }
+ Shader[] shaders = new Shader[2];
+ shaders[0] = new SourceCodeShader(Shader.SHADING_LANGUAGE_GLSL,
+ Shader.SHADER_TYPE_VERTEX,
+ vertexProgram);
+ shaders[1] = new SourceCodeShader(Shader.SHADING_LANGUAGE_GLSL,
+ Shader.SHADER_TYPE_FRAGMENT,
+ fragmentProgram);
+ ShaderProgram shaderProgram = new GLSLShaderProgram();
+ shaderProgram.setShaders(shaders);
+
+ a.setShaderProgram(shaderProgram);
+ a.setMaterial(m);
+ Sphere sph = new Sphere(1.0f, Sphere.GENERATE_NORMALS, 200, a);
+ objScale.addChild(sph);
+
+ // Create the transform group node for the each light and initialize
+ // it to the identity. Enable the TRANSFORM_WRITE capability so that
+ // our behavior code can modify it at runtime. Add them to the root
+ // of the subgraph.
+ TransformGroup l1RotTrans = new TransformGroup();
+ l1RotTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+ objScale.addChild(l1RotTrans);
+
+ TransformGroup l2RotTrans = new TransformGroup();
+ l2RotTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
+ objScale.addChild(l2RotTrans);
+
+ // Create transformations for the positional lights
+ t = new Transform3D();
+ Vector3d lPos1 = new Vector3d(0.0, 0.0, 2.0);
+ t.set(lPos1);
+ TransformGroup l1Trans = new TransformGroup(t);
+ l1RotTrans.addChild(l1Trans);
+
+ t = new Transform3D();
+ Vector3d lPos2 = new Vector3d(0.5, 0.8, 2.0);
+ t.set(lPos2);
+ TransformGroup l2Trans = new TransformGroup(t);
+ l2RotTrans.addChild(l2Trans);
+
+ /*
+ // Create Geometry for point lights
+ ColoringAttributes caL1 = new ColoringAttributes();
+ ColoringAttributes caL2 = new ColoringAttributes();
+ caL1.setColor(lColor1);
+ caL2.setColor(lColor2);
+ Appearance appL1 = new Appearance();
+ Appearance appL2 = new Appearance();
+ appL1.setColoringAttributes(caL1);
+ appL2.setColoringAttributes(caL2);
+ l1Trans.addChild(new Sphere(0.05f, appL1));
+ l2Trans.addChild(new Sphere(0.05f, appL2));
+ */
+
+ // Create lights
+ AmbientLight aLgt = new AmbientLight(alColor);
+
+ Light lgt1 = null;
+ Light lgt2 = null;
+
+ Point3f lPoint = new Point3f(0.0f, 0.0f, 0.0f);
+ Point3f atten = new Point3f(1.0f, 0.0f, 0.0f);
+ Vector3f lDirect1 = new Vector3f(lPos1);
+ Vector3f lDirect2 = new Vector3f(lPos2);
+ lDirect1.negate();
+ lDirect2.negate();
+
+ switch (lightType) {
+ case DIRECTIONAL_LIGHT:
+ lgt1 = new DirectionalLight(lColor1, lDirect1);
+ lgt2 = new DirectionalLight(lColor2, lDirect2);
+ break;
+ case POINT_LIGHT:
+ lgt1 = new PointLight(lColor1, lPoint, atten);
+ lgt2 = new PointLight(lColor2, lPoint, atten);
+ break;
+ case SPOT_LIGHT:
+ lgt1 = new SpotLight(lColor1, lPoint, atten, lDirect1,
+ 25.0f * (float)Math.PI / 180.0f, 10.0f);
+ lgt2 = new SpotLight(lColor2, lPoint, atten, lDirect2,
+ 25.0f * (float)Math.PI / 180.0f, 10.0f);
+ break;
+ }
+
+ // Set the influencing bounds
+ aLgt.setInfluencingBounds(bounds);
+ lgt1.setInfluencingBounds(bounds);
+ lgt2.setInfluencingBounds(bounds);
+
+ // Add the lights into the scene graph
+ objScale.addChild(aLgt);
+ l1Trans.addChild(lgt1);
+ l2Trans.addChild(lgt2);
+
+ // 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 rotor1Alpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+ 0, 0,
+ 4000, 0, 0,
+ 0, 0, 0);
+ RotationInterpolator rotator1 =
+ new RotationInterpolator(rotor1Alpha,
+ l1RotTrans,
+ yAxis,
+ 0.0f, (float) Math.PI*2.0f);
+ rotator1.setSchedulingBounds(bounds);
+ l1RotTrans.addChild(rotator1);
+
+ // Create a new Behavior object that will perform the desired
+ // operation on the specified transform object and add it into the
+ // scene graph.
+ Alpha rotor2Alpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
+ 0, 0,
+ 1000, 0, 0,
+ 0, 0, 0);
+ RotationInterpolator rotator2 =
+ new RotationInterpolator(rotor2Alpha,
+ l2RotTrans,
+ yAxis,
+ 0.0f, 0.0f);
+ bounds = new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
+ rotator2.setSchedulingBounds(bounds);
+ l2RotTrans.addChild(rotator2);
+
+ // Create a position interpolator and attach it to the view
+ // platform
+ TransformGroup vpTrans =
+ u.getViewingPlatform().getViewPlatformTransform();
+ Transform3D axisOfTranslation = new Transform3D();
+ Alpha transAlpha = new Alpha(-1,
+ Alpha.INCREASING_ENABLE |
+ Alpha.DECREASING_ENABLE,
+ 0, 0,
+ 5000, 0, 0,
+ 5000, 0, 0);
+ axisOfTranslation.rotY(-Math.PI/2.0);
+ PositionInterpolator translator =
+ new PositionInterpolator(transAlpha,
+ vpTrans,
+ axisOfTranslation,
+ 2.0f, 3.5f);
+ translator.setSchedulingBounds(bounds);
+ objScale.addChild(translator);
+
+ // Let Java 3D perform optimizations on this scene graph.
+ objRoot.compile();
+
+ return objRoot;
+ }
+
+ public SphereGLSL() {
+ }
+
+ public void init() {
+ setLayout(new BorderLayout());
+ GraphicsConfiguration config =
+ SimpleUniverse.getPreferredConfiguration();
+
+ Canvas3D c = new Canvas3D(config);
+ add("Center", c);
+
+ u = new SimpleUniverse(c);
+ BranchGroup scene = createSceneGraph(u);
+
+ // This will move the ViewPlatform back a bit so the
+ // objects in the scene can be viewed.
+ u.getViewingPlatform().setNominalViewingTransform();
+
+ /*
+ // Limit the frame rate to 100 Hz
+ u.getViewer().getView().setMinimumFrameCycleTime(10);
+ */
+
+ u.addBranchGraph(scene);
+ }
+
+ public void destroy() {
+ u.cleanup();
+ }
+
+ //
+ // The following allows SphereGLSL to be run as an application
+ // as well as an applet
+ //
+ public static void main(String[] args) {
+ // Parse the Input Arguments
+ String usage = "Usage: java SphereGLSL [-point | -spot | -dir]";
+ for (int i = 0; i < args.length; i++) {
+ if (args[i].startsWith("-")) {
+ if (args[i].equals("-point")) {
+ /*
+ System.out.println("Using point lights");
+ lightType = POINT_LIGHT;
+ */
+ System.out.println("Point lights not yet implemented, option ignored");
+ }
+ else if (args[i].equals("-spot")) {
+ /*
+ System.out.println("Using spot lights");
+ lightType = SPOT_LIGHT;
+ */
+ System.out.println("Spot lights not yet implemented, option ignored");
+ }
+ else if (args[i].equals("-dir")) {
+ System.out.println("Using directional lights");
+ lightType = DIRECTIONAL_LIGHT;
+ }
+ else {
+ System.out.println(usage);
+ System.exit(0);
+ }
+ }
+ else {
+ System.out.println(usage);
+ System.exit(0);
+ }
+ }
+
+ new MainFrame(new SphereGLSL(), 700, 700);
+ }
+}
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