public BranchGroup createSceneGraph() {
// Create the root of the branch graph
BranchGroup objRoot = new BranchGroup();
// Create the TransformGroup node and initialize it to the
// identity. Enable the TRANSFORM_WRITE capability so that
// our behavior code can modify it at run time. Add it to
// the root of the subgraph.
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objRoot.addChild(objTrans);
// Create a simple Shape3D 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 and add
// it into the scene graph.
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, 4000);
RotationInterpolator rotator =
new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0.0f, (float) Math.PI * 1.0f);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0);
rotator.setSchedulingBounds(bounds);
objRoot.addChild(rotator);
// Have Java 3D perform optimizations on this scene graph.
objRoot.compile();
return objRoot;
}
// In this method, the objects for the scene are generated and added to
// the SimpleUniverse.
public void createSceneGraph(SimpleUniverse su) {
// *** The root of the graph containing the scene (with a cube and a sphere). ***
BranchGroup theScene = new BranchGroup();
// Generate an Appearance.
Color3f ambientColourShaded = new Color3f(0.0f, 0.4f, 0.4f);
Color3f emissiveColourShaded = new Color3f(0.0f, 0.0f, 0.0f);
Color3f diffuseColourShaded = new Color3f(0.0f, 0.7f, 0.7f);
Color3f specularColourShaded = new Color3f(0.0f, 0.5f, 0.5f);
float shininessShaded = 20.0f;
Appearance shadedApp = new Appearance();
shadedApp.setMaterial(
new Material(
ambientColourShaded,
emissiveColourShaded,
diffuseColourShaded,
specularColourShaded,
shininessShaded));
float r = 0.3f; // The radius of the sphere.
float boxHL = 0.7f * r; // Half the vertex length of the cube.
float shift = 3.0f * r; // Distance between cube and sphere.
// *** The sphere and its transformation group ***
Sphere s = new Sphere(r, Sphere.GENERATE_NORMALS, 100, shadedApp);
Transform3D tfSphere = new Transform3D();
tfSphere.setTranslation(new Vector3f(-0.95f + r, 0.0f, 0.0f));
TransformGroup tgSphere = new TransformGroup(tfSphere);
tgSphere.addChild(s);
theScene.addChild(tgSphere);
// *** The cube and its transformation group ***
Box b2 = new Box(boxHL, boxHL, boxHL, shadedApp);
Transform3D tfBox2 = new Transform3D();
tfBox2.setTranslation(new Vector3f(-0.95f + r + shift, 0.0f, 0.0f));
Transform3D rotation = new Transform3D();
rotation.rotY(Math.PI / 4);
Transform3D rotationX = new Transform3D();
rotationX.rotX(Math.PI / 6);
rotation.mul(rotationX);
tfBox2.mul(rotation);
TransformGroup tgBox2 = new TransformGroup(tfBox2);
tgBox2.addChild(b2);
theScene.addChild(tgBox2);
// Generate a white background.
Background bg = new Background(new Color3f(1.0f, 1.0f, 1.0f));
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), Double.MAX_VALUE);
bg.setApplicationBounds(bounds);
theScene.addChild(bg);
theScene.compile();
// Add the scene to the universe.
su.addBranchGraph(theScene);
}
/**
* Set the version of VRML that this node should represent. Different versions have different
* capabilities, even within the same node.
*
* @param major The major version number of this scene
* @param minor The minor version number of this scene
* @param isStatic true if this node is under a static group and won't change after the setup is
* finished
*/
public void setVersion(int major, int minor, boolean isStatic) {
super.setVersion(major, minor, isStatic);
if (isStatic) return;
implGroup.setCapability(BranchGroup.ALLOW_DETACH);
implGroup.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE);
implGroup.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND);
implTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
implTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
implTG.setCapability(BranchGroup.ENABLE_PICK_REPORTING);
}
private TransformGroup makeText(Vector3d vertex, String text)
// Create a Text2D object at the specified vertex
{
Text2D message = new Text2D(text, white, "SansSerif", 36, Font.BOLD);
// 36 point bold Sans Serif
TransformGroup tg = new TransformGroup();
Transform3D t3d = new Transform3D();
t3d.setTranslation(vertex);
tg.setTransform(t3d);
tg.addChild(message);
return tg;
} // end of getTG()
public void addLinesAroundRegion(TransformGroup tg) {
Color3f x = new Color3f(Color.green.brighter().brighter());
Color3f y = new Color3f(Color.yellow.brighter().brighter());
Color3f z = new Color3f(Color.red.brighter().brighter());
LineArray wireframe = new LineArray(12 * 2, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
wireframe.setCapability(LineArray.ALLOW_COLOR_WRITE);
wireframe.setCapability(LineArray.ALLOW_COORDINATE_READ);
wireframe.setCapability(LineArray.ALLOW_COUNT_READ);
ArrayList<Point3f> vx = getVertices();
// Add lines parallel to x
wireframe.setCoordinate(0, vx.get(0));
wireframe.setCoordinate(1, vx.get(2));
wireframe.setCoordinate(2, vx.get(1));
wireframe.setCoordinate(3, vx.get(3));
wireframe.setCoordinate(4, vx.get(4));
wireframe.setCoordinate(5, vx.get(6));
wireframe.setCoordinate(6, vx.get(5));
wireframe.setCoordinate(7, vx.get(7));
for (int i = 0; i < 8; i++) wireframe.setColor(i, x);
// Add lines parallel to y
wireframe.setCoordinate(8, vx.get(0));
wireframe.setCoordinate(9, vx.get(4));
wireframe.setCoordinate(10, vx.get(1));
wireframe.setCoordinate(11, vx.get(5));
wireframe.setCoordinate(12, vx.get(2));
wireframe.setCoordinate(13, vx.get(6));
wireframe.setCoordinate(14, vx.get(3));
wireframe.setCoordinate(15, vx.get(7));
for (int i = 8; i < 16; i++) wireframe.setColor(i, y);
// Add lines parallel to z
wireframe.setCoordinate(16, vx.get(0));
wireframe.setCoordinate(17, vx.get(1));
wireframe.setCoordinate(18, vx.get(2));
wireframe.setCoordinate(19, vx.get(3));
wireframe.setCoordinate(20, vx.get(4));
wireframe.setCoordinate(21, vx.get(5));
wireframe.setCoordinate(22, vx.get(6));
wireframe.setCoordinate(23, vx.get(7));
for (int i = 16; i < 24; i++) wireframe.setColor(i, z);
Shape3D shape = new Shape3D(wireframe);
tg.addChild(shape);
}
// Directional light rotating around the scene and some ambient light.
public void addLight(SimpleUniverse su) {
BranchGroup bgLight = new BranchGroup();
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), Double.MAX_VALUE);
// Directional light (to be rotated).
Color3f lightColour = new Color3f(1.0f, 1.0f, 1.0f);
Vector3f lightDir = new Vector3f(0.0f, 0.0f, -1.0f);
DirectionalLight light = new DirectionalLight(lightColour, lightDir);
light.setInfluencingBounds(bounds);
// The transformation group for the directional light and its rotation.
TransformGroup tfmLight = new TransformGroup();
tfmLight.addChild(light);
// The Alpha for the rotation.
Alpha alphaLight = new Alpha(-1, 4000);
// The rotation
RotationInterpolator rot =
new RotationInterpolator(
alphaLight, tfmLight, new Transform3D(), 0.0f, (float) Math.PI * 2);
rot.setSchedulingBounds(bounds);
tfmLight.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
tfmLight.addChild(rot);
bgLight.addChild(tfmLight);
// Ambient light.
Color3f ambientLightColour = new Color3f(0.5f, 0.5f, 0.5f);
AmbientLight ambLight = new AmbientLight(ambientLightColour);
ambLight.setInfluencingBounds(bounds);
bgLight.addChild(ambLight);
su.addBranchGraph(bgLight);
}
public ObjectViewer(URL url) {
setLayout(new BorderLayout());
Canvas3D canvas3D = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
add("Center", canvas3D);
BoundingSphere bounds = new BoundingSphere(new Point3d(), 1000);
BranchGroup root = new BranchGroup();
BranchGroup scene = createSceneGraph(url);
scene.setBoundsAutoCompute(true);
System.out.println(scene.getBounds());
BoundingSphere sceneBounds = new BoundingSphere(scene.getBounds());
SimpleUniverse univ = new SimpleUniverse(canvas3D);
ViewingPlatform view = univ.getViewingPlatform();
view.setNominalViewingTransform();
Transform3D t = new Transform3D();
TransformGroup viewTransform = view.getViewPlatformTransform();
t.set(new Vector3d(0, 0, 3 * sceneBounds.getRadius()));
viewTransform.setTransform(t);
BranchGroup lights = new BranchGroup();
Light light = new AmbientLight();
light.setInfluencingBounds(bounds);
lights.addChild(light);
light = new DirectionalLight();
light.setInfluencingBounds(bounds);
lights.addChild(light);
root.addChild(lights);
TransformGroup tg = new TransformGroup();
tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
tg.addChild(scene);
root.addChild(tg);
MouseRotate mouse = new MouseRotate();
mouse.setTransformGroup(tg);
mouse.setSchedulingBounds(bounds);
root.addChild(mouse);
MouseZoom mousezoom = new MouseZoom();
mousezoom.setTransformGroup(tg);
mousezoom.setSchedulingBounds(bounds);
root.addChild(mousezoom);
Background background = new Background(1, 1, 1);
background.setApplicationBounds(bounds);
root.addChild(background);
root.compile();
univ.addBranchGraph(root);
}
public void processStimulus(Enumeration criteria) {
posVector.set(
(float) targetHistogram.neutronNumber - ((float) targetMaxNeutron / 2.0f),
(float) targetHistogram.abundance[step] - targetHistogram.normalizationFactor,
(float) -targetHistogram.protonNumber + ((float) targetMaxProton / 2.0f));
ca = targetHistogram.fillingAppearance.getColoringAttributes();
targetColorRamp.getColor(
targetHistogram.abundance[step] - targetHistogram.normalizationFactor, histColor);
ca.setColor(histColor);
step++;
if (step >= targetHistogram.abundance.length) {
step = 0;
}
targetT3D.set(posVector);
targetTG.setTransform(targetT3D);
this.wakeupOn(new WakeupOnAWTEvent(MouseEvent.MOUSE_CLICKED));
}
/** Calculate transforms needed to handle VRML semantics formula: T x C x R x SR x S x -SR x -C */
private void updateTransform() {
// System.out.println(this);
tempVec.x = -vfCenter[0];
tempVec.y = -vfCenter[1];
tempVec.z = -vfCenter[2];
matrix.setIdentity();
matrix.setTranslation(tempVec);
float scaleVal = 1.0f;
if (floatEq(vfScale[0], vfScale[1]) && floatEq(vfScale[0], vfScale[2])) {
scaleVal = vfScale[0];
tempMtx1.set(scaleVal);
// System.out.println("S" + tempMtx1);
} else {
// non-uniform scale
// System.out.println("Non Uniform Scale");
tempAxis.x = vfScaleOrientation[0];
tempAxis.y = vfScaleOrientation[1];
tempAxis.z = vfScaleOrientation[2];
tempAxis.angle = -vfScaleOrientation[3];
double tempAxisNormalizer =
1
/ Math.sqrt(
tempAxis.x * tempAxis.x + tempAxis.y * tempAxis.y + tempAxis.z * tempAxis.z);
tempAxis.x *= tempAxisNormalizer;
tempAxis.y *= tempAxisNormalizer;
tempAxis.z *= tempAxisNormalizer;
tempMtx1.set(tempAxis);
tempMtx2.mul(tempMtx1, matrix);
// Set the scale by individually setting each element
tempMtx1.setIdentity();
tempMtx1.m00 = vfScale[0];
tempMtx1.m11 = vfScale[1];
tempMtx1.m22 = vfScale[2];
matrix.mul(tempMtx1, tempMtx2);
tempAxis.x = vfScaleOrientation[0];
tempAxis.y = vfScaleOrientation[1];
tempAxis.z = vfScaleOrientation[2];
tempAxis.angle = vfScaleOrientation[3];
tempMtx1.set(tempAxis);
}
tempMtx2.mul(tempMtx1, matrix);
// System.out.println("Sx-C" + tempMtx2);
float magSq =
vfRotation[0] * vfRotation[0]
+ vfRotation[1] * vfRotation[1]
+ vfRotation[2] * vfRotation[2];
if (magSq < ZEROEPS) {
tempAxis.x = 0;
tempAxis.y = 0;
tempAxis.z = 1;
tempAxis.angle = 0;
} else {
if ((magSq > 1.01) || (magSq < 0.99)) {
float mag = (float) (1 / Math.sqrt(magSq));
tempAxis.x = vfRotation[0] * mag;
tempAxis.y = vfRotation[1] * mag;
tempAxis.z = vfRotation[2] * mag;
} else {
tempAxis.x = vfRotation[0];
tempAxis.y = vfRotation[1];
tempAxis.z = vfRotation[2];
}
tempAxis.angle = vfRotation[3];
}
tempMtx1.set(tempAxis);
// System.out.println("R" + tempMtx1);
matrix.mul(tempMtx1, tempMtx2);
// System.out.println("RxSx-C" + matrix);
tempVec.x = vfCenter[0];
tempVec.y = vfCenter[1];
tempVec.z = vfCenter[2];
tempMtx1.setIdentity();
tempMtx1.setTranslation(tempVec);
// System.out.println("C" + tempMtx1);
tempMtx2.mul(tempMtx1, matrix);
// System.out.println("CxRxSx-C" + tempMtx2);
tempVec.x = vfTranslation[0];
tempVec.y = vfTranslation[1];
tempVec.z = vfTranslation[2];
tempMtx1.setIdentity();
tempMtx1.setTranslation(tempVec);
matrix.mul(tempMtx1, tempMtx2);
transform.set(matrix);
implTG.setTransform(transform);
}
/** Setup the basic scene which consists of a quad and a viewpoint */
private void setupSceneGraph() {
// View group
Viewpoint vp = new Viewpoint();
Vector3f trans = new Vector3f(0, 0, 1);
Matrix4f mat = new Matrix4f();
mat.setIdentity();
mat.setTranslation(trans);
TransformGroup tx = new TransformGroup();
tx.addChild(vp);
tx.setTransform(mat);
Group scene_root = new Group();
scene_root.addChild(tx);
// Flat panel that has the viewable object as the demo
float[] coord = {0, 0, -1, 0.25f, 0, -1, 0, 0.25f, -1};
float[] normal = {0, 0, 1, 0, 0, 1, 0, 0, 1};
TriangleArray geom = new TriangleArray();
geom.setValidVertexCount(3);
geom.setVertices(TriangleArray.COORDINATE_3, coord);
geom.setNormals(normal);
Material material = new Material();
material.setDiffuseColor(new float[] {0, 0, 1});
material.setEmissiveColor(new float[] {0, 0, 1});
material.setSpecularColor(new float[] {1, 1, 1});
material.setTransparency(0.5f);
Appearance app = new Appearance();
app.setMaterial(material);
Shape3D shape = new Shape3D();
shape.setGeometry(geom);
shape.setAppearance(app);
TransformGroup tg = new TransformGroup();
Matrix4f transform = new Matrix4f();
transform.setIdentity();
transform.setTranslation(new Vector3f(0.15f, 0, -1));
tg.setTransform(transform);
Shape3D backShape = new Shape3D();
Material material2 = new Material();
material2.setDiffuseColor(new float[] {1, 0, 0});
material2.setEmissiveColor(new float[] {1, 0, 0});
material2.setSpecularColor(new float[] {1, 1, 1});
Appearance app2 = new Appearance();
app2.setMaterial(material2);
backShape.setGeometry(geom);
backShape.setAppearance(app2);
tg.addChild(backShape);
scene_root.addChild(tg);
scene_root.addChild(shape);
SimpleScene scene = new SimpleScene();
scene.setRenderedGeometry(scene_root);
scene.setActiveView(vp);
// Then the basic layer and viewport at the top:
SimpleViewport view = new SimpleViewport();
view.setDimensions(0, 0, 500, 500);
view.setScene(scene);
SimpleLayer layer = new SimpleLayer();
layer.setViewport(view);
Layer[] layers = {layer};
displayManager.setLayers(layers, 1);
}
