Hello,
I have issues with my Java3D application.I load my class and XYZ axis show in the canvas.Then I want to load the method LoadPointClouds() while program is running which will show a circle of point clouds,but this doesnt show up and I cant figure it out why.
I get no exceptions and I added the TransformGroup from the method to the BranchGroup and I have the capabilities set.
The point clouds must show up when I click the jButton.Tryed different things but did not succeed.I can confirm the method LoadPointClouds() gets called when I click the button because I put a message to be printed in the console as confirmation that is calling it,but still nothing is showing up in the scene.
Please help me 
Here is my code:
//------------------------------------------------------------------------------------------
/*
- To change this license header, choose License Headers in Project Properties.
- To change this template file, choose Tools | Templates
- and open the template in the editor.
*/
package Others;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.geometry.ColorCube;
import com.sun.j3d.utils.geometry.Sphere;
import com.sun.j3d.utils.geometry.Text2D;
import com.sun.j3d.utils.universe.SimpleUniverse;
import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.GraphicsConfiguration;
import static java.lang.Math.cos;
import static java.lang.Math.hypot;
import static java.lang.Math.sin;
import javax.media.j3d.Appearance;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.DirectionalLight;
import javax.media.j3d.GeometryArray;
import javax.media.j3d.PointArray;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.Vector3f;
/**
*
-
@author Me
*/
public class Java3D extends JPanel {public static Java3D instance;
public static Java3D getInstance() {
if (instance == null) { instance = new Java3D(); } return instance;}
BranchGroup branch;
SimpleUniverse universe;
BranchGroup b;public Java3D() {
setLayout(new BorderLayout()); GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration(); Canvas3D canvas = new Canvas3D(config); add("Center", canvas); universe = new SimpleUniverse(canvas); branch = new BranchGroup(); branch.setCapability(BranchGroup.ALLOW_CHILDREN_EXTEND); branch.setCapability(BranchGroup.ALLOW_CHILDREN_WRITE); branch.addChild(setLights()); branch.addChild(setAxis()); universe.getViewingPlatform().setNominalViewingTransform(); universe.addBranchGraph(branch);}
Shape3D plShape;public TransformGroup LoadPointCloud() {
Appearance app = new Appearance(); Point3f[] plaPts = new Point3f[361]; Color3f[] colPts = new Color3f[361]; //parallel to coordinates, colors. plaPts[0] = new Point3f(0.0f, 0.0f, 0.0f); colPts[0] = new Color3f(3.0f, 3.0f, 3.0f); float j = 0; for (int i = 0; i < 360; i++) { Point3f p3f1 = calc(0.2f, 0.0f, 0.2f, j++); plaPts[i + 1] = new Point3f(p3f1.x, p3f1.y, p3f1.z); colPts[i + 1] = new Color3f(0.8f, 1.0f, 5.0f); } PointArray pla = new PointArray(361, GeometryArray.COORDINATES | GeometryArray.COLOR_3); pla.setColors(0, colPts); //this is the color-array setting pla.setCoordinates(0, plaPts); plShape = new Shape3D(pla, app); TransformGroup transfPointCloud = new TransformGroup(); transfPointCloud.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); transfPointCloud.addChild(plShape); MouseRotate mouseRotate = new MouseRotate(); mouseRotate.setTransformGroup(transfPointCloud); mouseRotate.setSchedulingBounds(new BoundingSphere()); transfPointCloud.addChild(mouseRotate); System.out.println("Works"); return transfPointCloud;}
public Point3f calc(float x, float y, float z, float deg) {
float r = (float) hypot(x, y);//radical (x2+y2) float xx = (float) (r * sin(deg)); float yy = (float) y; float zz = (float) (r * cos(deg)); Point3f p3 = new Point3f(xx, yy, zz); return p3;}
public TransformGroup setAxis() {
TransformGroup tgg = new TransformGroup(); float x; TransformGroup tgX = null; float y; TransformGroup tgY = null; float z; TransformGroup tgZ = null; for (x = -1.0f; x <= 1.0f; x = x + 0.01f) { Sphere sphere = new Sphere(0.01f); tgX = new TransformGroup(); Transform3D transform = new Transform3D(); Vector3f vector = new Vector3f(x, .0f, .0f); transform.setTranslation(vector); tgX.setTransform(transform); tgX.addChild(sphere); tgg.addChild(tgX); } Text2D textX = new Text2D("X", new Color3f(0.9f, 1.0f, 1.0f), "Helvetica", 24, Font.BOLD); Transform3D tX = new Transform3D(); tX.set(2, new Vector3f(x - 1.0f, 0.0f, 0.0f)); TransformGroup tgTemp = new TransformGroup(tX); tgTemp.addChild(textX); tgX.addChild(tgTemp); for (y = -1.0f; y <= 1.0f; y = y + 0.01f) { Sphere sphere = new Sphere(0.01f); tgY = new TransformGroup(); Transform3D transform = new Transform3D(); Vector3f vector = new Vector3f(.0f, y, .0f); transform.setTranslation(vector); tgY.setTransform(transform); tgY.addChild(sphere); tgg.addChild(tgY); } Text2D textY = new Text2D("Y", new Color3f(0.9f, 1.0f, 1.0f), "Helvetica", 24, Font.BOLD); Transform3D tY = new Transform3D(); tY.set(2, new Vector3f(0.0f, y - 1.0f, 0.0f)); TransformGroup tgTempY = new TransformGroup(tY); tgTempY.addChild(textY); tgY.addChild(tgTempY); for (z = -1.0f; z <= 1.0f; z = z + 0.01f) { Sphere sphere = new Sphere(0.01f); tgZ = new TransformGroup(); Transform3D transform = new Transform3D(); Vector3f vector = new Vector3f(.0f, .0f, z); transform.setTranslation(vector); tgZ.setTransform(transform); tgZ.addChild(sphere); tgg.addChild(tgZ); } Text2D textZ = new Text2D("Z", new Color3f(0.9f, 1.0f, 1.0f), "Helvetica", 24, Font.BOLD); Transform3D tZ = new Transform3D(); tZ.set(2, new Vector3f(0.0f, 0.0f, z - 1.0f)); TransformGroup tgTempZ = new TransformGroup(tZ); tgTempZ.addChild(textZ); tgZ.addChild(tgTempZ); tgg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); MouseRotate mouseRotate = new MouseRotate(); mouseRotate.setTransformGroup(tgg); mouseRotate.setSchedulingBounds(new BoundingSphere()); tgg.addChild(mouseRotate); MouseZoom mouseDepth = new MouseZoom(); mouseDepth.setTransformGroup(tgg); mouseDepth.setSchedulingBounds(new BoundingSphere()); tgg.addChild(mouseDepth); MouseTranslate mouseTranslate = new MouseTranslate(); mouseTranslate.setTransformGroup(tgg); mouseTranslate.setSchedulingBounds(new BoundingSphere()); tgg.addChild(mouseTranslate); return tgg;}
public DirectionalLight setLights() {
Color3f light1Color = new Color3f(.1f, 1.4f, .1f); BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0); Vector3f light1Direction = new Vector3f(4.0f, -7.0f, -12.0f); DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction); light1.setInfluencingBounds(bounds); return light1;}
public static void main(String[] args) {
JFrame frame = new JFrame(); Java3D j = new Java3D(); frame.add(new JScrollPane(j)); frame.setSize(800, 800); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); Button b = new Button(); b.setVisible(true);}
}
and here is the method I use to call and set the pointclouds from another JForm class
//----------------------------------------------------------------------------------
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Java3D j3d = Java3D.getInstance();
BranchGroup b = new BranchGroup();
b.addChild(j3d.LoadPointCloud());
j3d.universe.addBranchGraph(b);
}