Java 3D Box and a custom Cuboid implementation
/**********************************************************
Copyright (C) 2001 Daniel Selman
First distributed with the book "Java 3D Programming"
by Daniel Selman and published by Manning Publications.
http://manning.com/selman
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, version 2.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
The license can be found on the WWW at:
http://www.fsf.org/copyleft/gpl.html
Or by writing to:
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Authors can be contacted at:
Daniel Selman: daniel@selman.org
If you make changes you think others would like, please
contact one of the authors or someone at the
www.j3d.org web site.
**************************************************************/
import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfigTemplate;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.net.URL;
import javax.media.j3d.Alpha;
import javax.media.j3d.Appearance;
import javax.media.j3d.AudioDevice;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.Bounds;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.Geometry;
import javax.media.j3d.GeometryArray;
import javax.media.j3d.GraphicsConfigTemplate3D;
import javax.media.j3d.Group;
import javax.media.j3d.Locale;
import javax.media.j3d.Node;
import javax.media.j3d.NodeComponent;
import javax.media.j3d.PhysicalBody;
import javax.media.j3d.PhysicalEnvironment;
import javax.media.j3d.PolygonAttributes;
import javax.media.j3d.QuadArray;
import javax.media.j3d.RotationInterpolator;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.media.j3d.TriangleArray;
import javax.media.j3d.View;
import javax.media.j3d.ViewPlatform;
import javax.media.j3d.VirtualUniverse;
import javax.vecmath.Color3f;
import javax.vecmath.Point2f;
import javax.vecmath.Point3d;
import javax.vecmath.Point3f;
import javax.vecmath.TexCoord2f;
import javax.vecmath.Vector3d;
import javax.vecmath.Vector3f;
import com.sun.j3d.audioengines.javasound.JavaSoundMixer;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.geometry.Primitive;
/**
* Creates a scene using the Java 3D Box and a custom Cuboid implementation that
* uses Quads for sides instead of TriArrays
*/
public class CuboidTest extends Java3dApplet implements ActionListener {
private static int m_kWidth = 400;
private static int m_kHeight = 400;
public CuboidTest() {
initJava3d();
}
public void actionPerformed(ActionEvent event) {
}
protected Background createBackground() {
return null;
}
protected double getScale() {
return 0.1;
}
protected BranchGroup createSceneBranchGroup() {
BranchGroup objRoot = super.createSceneBranchGroup();
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
BoundingSphere bounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
Transform3D yAxis = new Transform3D();
Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE, 0, 0,
4000, 0, 0, 0, 0, 0);
RotationInterpolator rotator = new RotationInterpolator(rotationAlpha,
objTrans, yAxis, 0.0f, (float) Math.PI * 2.0f);
rotator.setSchedulingBounds(bounds);
objTrans.addChild(rotator);
// create an appearance
Appearance ap = new Appearance();
// render as a wireframe
PolygonAttributes polyAttrbutes = new PolygonAttributes();
polyAttrbutes.setPolygonMode(PolygonAttributes.POLYGON_LINE);
polyAttrbutes.setCullFace(PolygonAttributes.CULL_NONE);
ap.setPolygonAttributes(polyAttrbutes);
objTrans.addChild(new Cuboid(50, 30, 20, ap));
objTrans.addChild(new Box(25, 15, 10, ap));
objRoot.addChild(objTrans);
return objRoot;
}
public static void main(String[] args) {
CuboidTest cuboidTest = new CuboidTest();
cuboidTest.saveCommandLineArguments(args);
new MainFrame(cuboidTest, m_kWidth, m_kHeight);
}
}
//Based on Sun's GeomBuffer.java 1.12 98/07/08 11:30:12
//This version actually returns Quadstrips for a Quadstrip array
//unlike the newer version that returns TriangleStrips....
/**
* OldGeomBuffer allows OpenGL-like input of geometry data. It outputs Java 3D
* geometry array objects. This utility is to simplify porting of OpenGL
* programs to Java 3D.
* <p>
* Here is a sample code that use this utility to create some quads.
* <P>
* <blockquote>
*
* <pre>
*
*
* OldGeomBuffer gbuf = new OldGeomBuffer(100);
* gbuf.begin(OldGeomBuffer.QUADS);
*
* for (int i = 0; i < 5; i++) {
* gbuf.normal3d(0.0, 1.0, 0.0);
* gbuf.vertex3d(1.0, 1.0, 0.0);
*
* gbuf.normal3d(0.0, 1.0, 0.0);
* gbuf.vertex3d(0.0, 1.0, 0.0);
*
* gbuf.normal3d(0.0, 1.0, 0.0);
* gbuf.vertex3d(0.0, 0.0, 0.0);
*
* gbuf.normal3d(0.0, 1.0, 0.0);
* gbuf.vertex3d(1.0, 0.0, 0.0);
* }
* gbuf.end();
* Shape3D shape = new Shape3D(gbuf.getGeom(OldGeomBuffer.GENERATE_NORMALS));
* </pre>
*
* </blockquote> Notice, that you only need to specify some upperbound on the
* number of points you'll use at the beginning (100 in this case).
* <p>
* Currently, you are limited to one primitive type per geom buffer. Future
* versions will add support for mixed primitive types.
*
*/
class OldGeomBuffer extends Object {
//Supported Primitives
static final int QUAD_STRIP = 0x01;
static final int TRIANGLES = 0x02;
static final int QUADS = 0x04;
private int flags;
static final int GENERATE_NORMALS = 0x01;
static final int GENERATE_TEXTURE_COORDS = 0x02;
Point3f[] pts = null;
Vector3f[] normals = null;
Point2f[] tcoords = null;
int currVertCnt;
int currPrimCnt;
int[] currPrimType = null, currPrimStartVertex = null,
currPrimEndVertex = null;
GeometryArray geometry;
int numVerts = 0;
int numTris = 0;
static final int debug = 0;
/**
* Creates a geometry buffer of given number of vertices
*
* @param numVerts
* total number of vertices to allocate by this buffer. This is
* an upper bound estimate.
*/
OldGeomBuffer(int numVerts) {
pts = new Point3f[numVerts];
normals = new Vector3f[numVerts];
tcoords = new Point2f[numVerts];
// max primitives is numV/3
currPrimType = new int[numVerts / 3];
currPrimStartVertex = new int[numVerts / 3];
currPrimEndVertex = new int[numVerts / 3];
currVertCnt = 0;
currPrimCnt = 0;
}
/*
* Returns a Java 3D geometry array from the geometry buffer. You need to
* call begin, vertex3d, end, etc. before calling this, of course.
*
* @param format vertex format.
*/
GeometryArray getGeom(int format) {
GeometryArray obj;
flags = format;
numTris = 0;
//Switch based on first primitive.
switch (currPrimType[0]) {
case TRIANGLES:
obj = processTriangles();
obj.setCapability(Geometry.ALLOW_INTERSECT);
return obj;
case QUADS:
obj = processQuads();
obj.setCapability(Geometry.ALLOW_INTERSECT);
return obj;
case QUAD_STRIP:
obj = processQuadStrips();
obj.setCapability(Geometry.ALLOW_INTERSECT);
return obj;
}
return null;
}
/**
* Begins a new primitive given the primitive type.
*
* @param prim
* the primitive type (listed above).
*
*/
void begin(int prim) {
if (debug >= 1)
System.out.println("quad");
currPrimType[currPrimCnt] = prim;
currPrimStartVertex[currPrimCnt] = currVertCnt;
}
/**
* End of primitive.
*
*
*/
void end() {
if (debug >= 1)
System.out.println("end");
currPrimEndVertex[currPrimCnt] = currVertCnt;
currPrimCnt++;
}
void vertex3d(double x, double y, double z) {
if (debug >= 2)
System.out.println("v " + x + " " + y + " " + z);
pts[currVertCnt] = new Point3f();
pts[currVertCnt].x = (float) x;
pts[currVertCnt].y = (float) y;
pts[currVertCnt].z = (float) z;
currVertCnt++;
}
void normal3d(double x, double y, double z) {
if (debug >= 2)
System.out.println("n " + x + " " + y + " " + z);
double sum = x * x + y * y + z * z;
if (Math.abs(sum - 1.0) > 0.001) {
if (debug >= 2)
System.out.println("normalizing");
double root = Math.sqrt(sum) + 0.0000001;
x /= root;
y /= root;
z /= root;
}
normals[currVertCnt] = new Vector3f();
normals[currVertCnt].x = (float) x;
normals[currVertCnt].y = (float) y;
normals[currVertCnt].z = (float) z;
}
void texCoord2d(double s, double t) {
if (debug >= 2)
System.out.println("t " + s + " " + t);
tcoords[currVertCnt] = new Point2f();
tcoords[currVertCnt].x = (float) s;
tcoords[currVertCnt].y = (float) t;
}
/**
* Returns the Java 3D geometry gotten from calling getGeom.
*
*/
GeometryArray getComputedGeometry() {
return geometry;
}
int getNumTris() {
return numTris;
}
int getNumVerts() {
return numVerts;
}
private GeometryArray processQuadStrips() {
GeometryArray obj = null;
int i;
int totalVerts = 0;
for (i = 0; i < currPrimCnt; i++) {
int numQuadStripVerts;
numQuadStripVerts = currPrimEndVertex[i] - currPrimStartVertex[i];
totalVerts += (numQuadStripVerts / 2 - 1) * 4;
}
if (debug >= 1)
System.out.println("totalVerts " + totalVerts);
if (((flags & GENERATE_NORMALS) != 0)
&& ((flags & GENERATE_TEXTURE_COORDS) != 0)) {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES
| QuadArray.NORMALS | QuadArray.TEXTURE_COORDINATE_2);
} else if (((flags & GENERATE_NORMALS) == 0)
&& ((flags & GENERATE_TEXTURE_COORDS) != 0)) {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES
| QuadArray.TEXTURE_COORDINATE_2);
} else if (((flags & GENERATE_NORMALS) != 0)
&& ((flags & GENERATE_TEXTURE_COORDS) == 0)) {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES
| QuadArray.NORMALS);
} else {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES);
}
Point3f[] newpts = new Point3f[totalVerts];
Vector3f[] newnormals = new Vector3f[totalVerts];
TexCoord2f[] newtcoords = new TexCoord2f[totalVerts];
int currVert = 0;
for (i = 0; i < currPrimCnt; i++) {
for (int j = currPrimStartVertex[i] + 2; j < currPrimEndVertex[i]; j += 2) {
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j - 2);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j - 1);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j + 1);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j);
numTris += 2;
}
}
numVerts = currVert;
obj.setCoordinates(0, newpts);
if ((flags & GENERATE_NORMALS) != 0)
obj.setNormals(0, newnormals);
if ((flags & GENERATE_TEXTURE_COORDS) != 0)
obj.setTextureCoordinates(0, 0, newtcoords);
geometry = obj;
return obj;
}
private GeometryArray processQuads() {
GeometryArray obj = null;
int i;
int totalVerts = 0;
for (i = 0; i < currPrimCnt; i++) {
totalVerts += currPrimEndVertex[i] - currPrimStartVertex[i];
}
if (debug >= 1)
System.out.println("totalVerts " + totalVerts);
if (((flags & GENERATE_NORMALS) != 0)
&& ((flags & GENERATE_TEXTURE_COORDS) != 0)) {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES
| QuadArray.NORMALS | QuadArray.TEXTURE_COORDINATE_2);
} else if (((flags & GENERATE_NORMALS) == 0)
&& ((flags & GENERATE_TEXTURE_COORDS) != 0)) {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES
| QuadArray.TEXTURE_COORDINATE_2);
} else if (((flags & GENERATE_NORMALS) != 0)
&& ((flags & GENERATE_TEXTURE_COORDS) == 0)) {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES
| QuadArray.NORMALS);
} else {
obj = new QuadArray(totalVerts, QuadArray.COORDINATES);
}
Point3f[] newpts = new Point3f[totalVerts];
Vector3f[] newnormals = new Vector3f[totalVerts];
TexCoord2f[] newtcoords = new TexCoord2f[totalVerts];
int currVert = 0;
if (debug > 1)
System.out.println("total prims " + currPrimCnt);
for (i = 0; i < currPrimCnt; i++) {
if (debug > 1)
System.out.println("start " + currPrimStartVertex[i] + " end "
+ currPrimEndVertex[i]);
for (int j = currPrimStartVertex[i]; j < currPrimEndVertex[i] - 3; j += 4) {
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j + 1);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j + 2);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j + 3);
numTris += 2;
}
}
numVerts = currVert;
obj.setCoordinates(0, newpts);
if ((flags & GENERATE_NORMALS) != 0)
obj.setNormals(0, newnormals);
if ((flags & GENERATE_TEXTURE_COORDS) != 0)
obj.setTextureCoordinates(0, 0, newtcoords);
geometry = obj;
return obj;
}
private GeometryArray processTriangles() {
GeometryArray obj = null;
int i;
int totalVerts = 0;
for (i = 0; i < currPrimCnt; i++) {
totalVerts += currPrimEndVertex[i] - currPrimStartVertex[i];
}
if (debug >= 1)
System.out.println("totalVerts " + totalVerts);
if (((flags & GENERATE_NORMALS) != 0)
&& ((flags & GENERATE_TEXTURE_COORDS) != 0)) {
obj = new TriangleArray(totalVerts, TriangleArray.COORDINATES
| TriangleArray.NORMALS
| TriangleArray.TEXTURE_COORDINATE_2);
} else if (((flags & GENERATE_NORMALS) == 0)
&& ((flags & GENERATE_TEXTURE_COORDS) != 0)) {
obj = new TriangleArray(totalVerts, TriangleArray.COORDINATES
| TriangleArray.TEXTURE_COORDINATE_2);
} else if (((flags & GENERATE_NORMALS) != 0)
&& ((flags & GENERATE_TEXTURE_COORDS) == 0)) {
obj = new TriangleArray(totalVerts, TriangleArray.COORDINATES
| TriangleArray.NORMALS);
} else {
obj = new TriangleArray(totalVerts, TriangleArray.COORDINATES);
}
Point3f[] newpts = new Point3f[totalVerts];
Vector3f[] newnormals = new Vector3f[totalVerts];
TexCoord2f[] newtcoords = new TexCoord2f[totalVerts];
int currVert = 0;
for (i = 0; i < currPrimCnt; i++) {
for (int j = currPrimStartVertex[i]; j < currPrimEndVertex[i] - 2; j += 3) {
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j + 1);
outVertex(newpts, newnormals, newtcoords, currVert++, pts,
normals, tcoords, j + 2);
numTris += 1;
}
}
numVerts = currVert;
obj.setCoordinates(0, newpts);
if ((flags & GENERATE_NORMALS) != 0)
obj.setNormals(0, newnormals);
if ((flags & GENERATE_TEXTURE_COORDS) != 0)
obj.setTextureCoordinates(0, 0, newtcoords);
geometry = obj;
return obj;
}
void outVertex(Point3f[] dpts, Vector3f[] dnormals, TexCoord2f[] dtcoords,
int dloc, Point3f[] spts, Vector3f[] snormals, Point2f[] stcoords,
int sloc) {
if (debug >= 1)
System.out.println("v " + spts[sloc].x + " " + spts[sloc].y + " "
+ spts[sloc].z);
dpts[dloc] = new Point3f();
dpts[dloc].x = spts[sloc].x;
dpts[dloc].y = spts[sloc].y;
dpts[dloc].z = spts[sloc].z;
if ((flags & GENERATE_NORMALS) != 0) {
dnormals[dloc] = new Vector3f();
dnormals[dloc].x = snormals[sloc].x;
dnormals[dloc].y = snormals[sloc].y;
dnormals[dloc].z = snormals[sloc].z;
}
if ((flags & GENERATE_TEXTURE_COORDS) != 0) {
if (debug >= 2)
System.out.println("final out tcoord");
dtcoords[dloc] = new TexCoord2f();
dtcoords[dloc].x = stcoords[sloc].x;
dtcoords[dloc].y = stcoords[sloc].y;
}
}
}
//Based on Sun's Box.java 1.13 98/11/23 10:23:02
//Work around for the Box bug when rendered in Wireframe mode.
/**
* Cuboid is a geometry primitive created with a given length, width, and
* height. It is centered at the origin. By default, it lies within the bounding
* Cuboid, [-1,-1,-1] and [1,1,1].
*
* When a texture is applied to a Cuboid, it is map CCW like on a Cylinder. A
* texture is mapped CCW from the back of the body. The top and bottom faces are
* mapped such that the texture appears front facing when the faces are rotated
* 90 toward the viewer.
*/
class Cuboid extends Primitive {
protected int numTris = 0;
protected int numVerts = 0;
/**
* Primitive flags.
*/
protected int flags;
/**
* Used to designate the front side of the Cuboid when using getShape().
*
* @see Cuboid#getShape
*/
public static final int FRONT = 0;
/**
* Used to designate the back side of the Cuboid when using getShape().
*
* @see Cuboid#getShape
*/
public static final int BACK = 1;
/**
* Used to designate the right side of the Cuboid when using getShape().
*
* @see Cuboid#getShape
*/
public static final int RIGHT = 2;
/**
* Used to designate the left side of the Cuboid when using getShape().
*
* @see Cuboid#getShape
*/
public static final int LEFT = 3;
/**
* Used to designate the top side of the Cuboid when using getShape().
*
* @see Cuboid#getShape
*/
public static final int TOP = 4;
/**
* Used to designate the bottom side of the Cuboid when using getShape().
*
* @see Cuboid#getShape
*/
public static final int BOTTOM = 5;
float xDim, yDim, zDim;
/**
* Constructs a default Cuboid of 1.0 in all dimensions.
*/
public Cuboid() {
this(1.0f, 1.0f, 1.0f, GENERATE_NORMALS, null);
}
public Appearance getAppearance(int index) {
return null;
}
/**
* Constructs a Cuboid of a given dimension and appearance.
*
* @param xdim
* X-dimension size.
* @param ydim
* Y-dimension size.
* @param zdim
* Z-dimension size.
* @param ap
* Appearance
*/
public Cuboid(float xdim, float ydim, float zdim, Appearance ap) {
this(xdim, ydim, zdim, GENERATE_NORMALS, ap);
}
/**
* Constructs a Cuboid of a given dimension, flags, and appearance.
*
* @param xdim
* X-dimension size.
* @param ydim
* Y-dimension size.
* @param zdim
* Z-dimension size.
* @param primflags
* primitive flags.
* @param ap
* Appearance
*/
public Cuboid(float xdim, float ydim, float zdim, int primflags,
Appearance ap) {
int i;
double sign;
xDim = xdim;
yDim = ydim;
zDim = zdim;
flags = primflags;
//Depending on whether normal inward bit is set.
if ((flags & GENERATE_NORMALS_INWARD) != 0)
sign = -1.0;
else
sign = 1.0;
TransformGroup objTrans = new TransformGroup();
objTrans.setCapability(ALLOW_CHILDREN_READ);
this.addChild(objTrans);
Shape3D shape[] = new Shape3D[6];
for (i = FRONT; i <= BOTTOM; i++) {
OldGeomBuffer gbuf = new OldGeomBuffer(4);
gbuf.begin(OldGeomBuffer.QUAD_STRIP);
for (int j = 0; j < 2; j++) {
gbuf.normal3d((double) normals[i].x * sign,
(double) normals[i].y * sign, (double) normals[i].z
* sign);
gbuf.texCoord2d(tcoords[i * 8 + j * 2], tcoords[i * 8 + j * 2
+ 1]);
gbuf.vertex3d((double) verts[i * 12 + j * 3] * xdim,
(double) verts[i * 12 + j * 3 + 1] * ydim,
(double) verts[i * 12 + j * 3 + 2] * zdim);
}
for (int j = 3; j > 1; j--) {
gbuf.normal3d((double) normals[i].x * sign,
(double) normals[i].y * sign, (double) normals[i].z
* sign);
gbuf.texCoord2d(tcoords[i * 8 + j * 2], tcoords[i * 8 + j * 2
+ 1]);
gbuf.vertex3d((double) verts[i * 12 + j * 3] * xdim,
(double) verts[i * 12 + j * 3 + 1] * ydim,
(double) verts[i * 12 + j * 3 + 2] * zdim);
}
gbuf.end();
shape[i] = new Shape3D(gbuf.getGeom(flags));
numVerts = gbuf.getNumVerts();
numTris = gbuf.getNumTris();
if ((flags & ENABLE_APPEARANCE_MODIFY) != 0) {
(shape[i]).setCapability(Shape3D.ALLOW_APPEARANCE_READ);
(shape[i]).setCapability(Shape3D.ALLOW_APPEARANCE_WRITE);
}
objTrans.addChild(shape[i]);
}
if (ap == null) {
setAppearance();
} else
setAppearance(ap);
}
/**
* Gets one of the faces (Shape3D) from the Cuboid that contains the
* geometry and appearance. This allows users to modify the appearance or
* geometry of individual parts.
*
* @param partId
* The part to return.
* @return The Shape3D object associated with the partID. If an invalid
* partId is passed in, null is returned.
*/
public Shape3D getShape(int partId) {
if ((partId >= FRONT) && (partId <= BOTTOM))
return (Shape3D) (((Group) getChild(0)).getChild(partId));
return null;
}
/**
* Sets appearance of the Cuboid. This will set each face of the Cuboid to
* the same appearance. To set each face's appearance separately, use
* getShape(partId) to get the individual shape and call
* shape.setAppearance(ap).
*/
public void setAppearance(Appearance ap) {
((Shape3D) ((Group) getChild(0)).getChild(TOP)).setAppearance(ap);
((Shape3D) ((Group) getChild(0)).getChild(LEFT)).setAppearance(ap);
((Shape3D) ((Group) getChild(0)).getChild(RIGHT)).setAppearance(ap);
((Shape3D) ((Group) getChild(0)).getChild(FRONT)).setAppearance(ap);
((Shape3D) ((Group) getChild(0)).getChild(BACK)).setAppearance(ap);
((Shape3D) ((Group) getChild(0)).getChild(BOTTOM)).setAppearance(ap);
}
private static final float[] verts = {
// front face
1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f,
-1.0f, 1.0f,
// back face
-1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f,
-1.0f, -1.0f,
// right face
1.0f, -1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f, 1.0f, 1.0f, 1.0f,
-1.0f, 1.0f,
// left face
-1.0f, -1.0f, 1.0f, -1.0f, 1.0f, 1.0f, -1.0f, 1.0f, -1.0f, -1.0f,
-1.0f, -1.0f,
// top face
1.0f, 1.0f, 1.0f, 1.0f, 1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f,
1.0f, 1.0f,
// bottom face
-1.0f, -1.0f, 1.0f, -1.0f, -1.0f, -1.0f, 1.0f, -1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, };
private static final double[] tcoords = {
// front
1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.0, 0.0,
// back
1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.0, 0.0,
//right
1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.0, 0.0,
// left
1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.0, 0.0,
// top
1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 0.0, 0.0,
// bottom
0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 1.0, 1.0 };
private static final Vector3f[] normals = { new Vector3f(0.0f, 0.0f, 1.0f), // front
// face
new Vector3f(0.0f, 0.0f, -1.0f), // back face
new Vector3f(1.0f, 0.0f, 0.0f), // right face
new Vector3f(-1.0f, 0.0f, 0.0f), // left face
new Vector3f(0.0f, 1.0f, 0.0f), // top face
new Vector3f(0.0f, -1.0f, 0.0f), // bottom face
};
/**
* Used to create a new instance of the node. This routine is called by
* <code>cloneTree</code> to duplicate the current node.
* <code>cloneNode</code> should be overridden by any user subclassed
* objects. All subclasses must have their <code>cloneNode</code> method
* consist of the following lines:
* <P>
* <blockquote>
*
* <pre>
* public Node cloneNode(boolean forceDuplicate) {
* UserSubClass usc = new UserSubClass();
* usc.duplicateNode(this, forceDuplicate);
* return usc;
* }
* </pre>
*
* </blockquote>
*
* @param forceDuplicate
* when set to <code>true</code>, causes the
* <code>duplicateOnCloneTree</code> flag to be ignored. When
* <code>false</code>, the value of each node's
* <code>duplicateOnCloneTree</code> variable determines
* whether NodeComponent data is duplicated or copied.
*
* @see Node#cloneTree
* @see Node#duplicateNode
* @see NodeComponent#setDuplicateOnCloneTree
*/
public Node cloneNode(boolean forceDuplicate) {
Cuboid b = new Cuboid(xDim, yDim, zDim, flags, getAppearance());
b.duplicateNode(this, forceDuplicate);
return b;
}
/**
* Copies all node information from <code>originalNode</code> into the
* current node. This method is called from the <code>cloneNode</code>
* method which is, in turn, called by the <code>cloneTree</code> method.
* <P>
* For any <i>NodeComponent </i> objects contained by the object being
* duplicated, each <i>NodeComponent </i> object's
* <code>duplicateOnCloneTree</code> value is used to determine whether
* the <i>NodeComponent </i> should be duplicated in the new node or if just
* a reference to the current node should be placed in the new node. This
* flag can be overridden by setting the <code>forceDuplicate</code>
* parameter in the <code>cloneTree</code> method to <code>true</code>.
*
* @param originalNode
* the original node to duplicate.
* @param forceDuplicate
* when set to <code>true</code>, causes the
* <code>duplicateOnCloneTree</code> flag to be ignored. When
* <code>false</code>, the value of each node's
* <code>duplicateOnCloneTree</code> variable determines
* whether NodeComponent data is duplicated or copied.
*
* @see Node#cloneTree
* @see Node#cloneNode
* @see NodeComponent#setDuplicateOnCloneTree
*/
public void duplicateNode(Node originalNode, boolean forceDuplicate) {
super.duplicateNode(originalNode, forceDuplicate);
}
}
/*******************************************************************************
* Copyright (C) 2001 Daniel Selman
*
* First distributed with the book "Java 3D Programming" by Daniel Selman and
* published by Manning Publications. http://manning.com/selman
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* The license can be found on the WWW at: http://www.fsf.org/copyleft/gpl.html
*
* Or by writing to: Free Software Foundation, Inc., 59 Temple Place - Suite
* 330, Boston, MA 02111-1307, USA.
*
* Authors can be contacted at: Daniel Selman: daniel@selman.org
*
* If you make changes you think others would like, please contact one of the
* authors or someone at the www.j3d.org web site.
******************************************************************************/
//*****************************************************************************
/**
* Java3dApplet
*
* Base class for defining a Java 3D applet. Contains some useful methods for
* defining views and scenegraphs etc.
*
* @author Daniel Selman
* @version 1.0
*/
//*****************************************************************************
abstract class Java3dApplet extends Applet {
public static int m_kWidth = 300;
public static int m_kHeight = 300;
protected String[] m_szCommandLineArray = null;
protected VirtualUniverse m_Universe = null;
protected BranchGroup m_SceneBranchGroup = null;
protected Bounds m_ApplicationBounds = null;
// protected com.tornadolabs.j3dtree.Java3dTree m_Java3dTree = null;
public Java3dApplet() {
}
public boolean isApplet() {
try {
System.getProperty("user.dir");
System.out.println("Running as Application.");
return false;
} catch (Exception e) {
}
System.out.println("Running as Applet.");
return true;
}
public URL getWorkingDirectory() throws java.net.MalformedURLException {
URL url = null;
try {
File file = new File(System.getProperty("user.dir"));
System.out.println("Running as Application:");
System.out.println(" " + file.toURL());
return file.toURL();
} catch (Exception e) {
}
System.out.println("Running as Applet:");
System.out.println(" " + getCodeBase());
return getCodeBase();
}
public VirtualUniverse getVirtualUniverse() {
return m_Universe;
}
//public com.tornadolabs.j3dtree.Java3dTree getJ3dTree() {
//return m_Java3dTree;
// }
public Locale getFirstLocale() {
java.util.Enumeration e = m_Universe.getAllLocales();
if (e.hasMoreElements() != false)
return (Locale) e.nextElement();
return null;
}
protected Bounds getApplicationBounds() {
if (m_ApplicationBounds == null)
m_ApplicationBounds = createApplicationBounds();
return m_ApplicationBounds;
}
protected Bounds createApplicationBounds() {
m_ApplicationBounds = new BoundingSphere(new Point3d(0.0, 0.0, 0.0),
100.0);
return m_ApplicationBounds;
}
protected Background createBackground() {
Background back = new Background(new Color3f(0.9f, 0.9f, 0.9f));
back.setApplicationBounds(createApplicationBounds());
return back;
}
public void initJava3d() {
// m_Java3dTree = new com.tornadolabs.j3dtree.Java3dTree();
m_Universe = createVirtualUniverse();
Locale locale = createLocale(m_Universe);
BranchGroup sceneBranchGroup = createSceneBranchGroup();
ViewPlatform vp = createViewPlatform();
BranchGroup viewBranchGroup = createViewBranchGroup(
getViewTransformGroupArray(), vp);
createView(vp);
Background background = createBackground();
if (background != null)
sceneBranchGroup.addChild(background);
// m_Java3dTree.recursiveApplyCapability(sceneBranchGroup);
// m_Java3dTree.recursiveApplyCapability(viewBranchGroup);
locale.addBranchGraph(sceneBranchGroup);
addViewBranchGroup(locale, viewBranchGroup);
onDoneInit();
}
protected void onDoneInit() {
// m_Java3dTree.updateNodes(m_Universe);
}
protected double getScale() {
return 1.0;
}
public TransformGroup[] getViewTransformGroupArray() {
TransformGroup[] tgArray = new TransformGroup[1];
tgArray[0] = new TransformGroup();
// move the camera BACK a little...
// note that we have to invert the matrix as
// we are moving the viewer
Transform3D t3d = new Transform3D();
t3d.setScale(getScale());
t3d.setTranslation(new Vector3d(0.0, 0.0, -20.0));
t3d.invert();
tgArray[0].setTransform(t3d);
return tgArray;
}
protected void addViewBranchGroup(Locale locale, BranchGroup bg) {
locale.addBranchGraph(bg);
}
protected Locale createLocale(VirtualUniverse u) {
return new Locale(u);
}
protected BranchGroup createSceneBranchGroup() {
m_SceneBranchGroup = new BranchGroup();
return m_SceneBranchGroup;
}
protected View createView(ViewPlatform vp) {
View view = new View();
PhysicalBody pb = createPhysicalBody();
PhysicalEnvironment pe = createPhysicalEnvironment();
AudioDevice audioDevice = createAudioDevice(pe);
if (audioDevice != null) {
pe.setAudioDevice(audioDevice);
audioDevice.initialize();
}
view.setPhysicalEnvironment(pe);
view.setPhysicalBody(pb);
if (vp != null)
view.attachViewPlatform(vp);
view.setBackClipDistance(getBackClipDistance());
view.setFrontClipDistance(getFrontClipDistance());
Canvas3D c3d = createCanvas3D();
view.addCanvas3D(c3d);
addCanvas3D(c3d);
return view;
}
protected PhysicalBody createPhysicalBody() {
return new PhysicalBody();
}
protected AudioDevice createAudioDevice(PhysicalEnvironment pe) {
JavaSoundMixer javaSoundMixer = new JavaSoundMixer(pe);
if (javaSoundMixer == null)
System.out.println("create of audiodevice failed");
return javaSoundMixer;
}
protected PhysicalEnvironment createPhysicalEnvironment() {
return new PhysicalEnvironment();
}
protected float getViewPlatformActivationRadius() {
return 100;
}
protected ViewPlatform createViewPlatform() {
ViewPlatform vp = new ViewPlatform();
vp.setViewAttachPolicy(View.RELATIVE_TO_FIELD_OF_VIEW);
vp.setActivationRadius(getViewPlatformActivationRadius());
return vp;
}
protected Canvas3D createCanvas3D() {
GraphicsConfigTemplate3D gc3D = new GraphicsConfigTemplate3D();
gc3D.setSceneAntialiasing(GraphicsConfigTemplate.PREFERRED);
GraphicsDevice gd[] = GraphicsEnvironment.getLocalGraphicsEnvironment()
.getScreenDevices();
Canvas3D c3d = new Canvas3D(gd[0].getBestConfiguration(gc3D));
c3d.setSize(getCanvas3dWidth(c3d), getCanvas3dHeight(c3d));
return c3d;
}
protected int getCanvas3dWidth(Canvas3D c3d) {
return m_kWidth;
}
protected int getCanvas3dHeight(Canvas3D c3d) {
return m_kHeight;
}
protected double getBackClipDistance() {
return 100.0;
}
protected double getFrontClipDistance() {
return 1.0;
}
protected BranchGroup createViewBranchGroup(TransformGroup[] tgArray,
ViewPlatform vp) {
BranchGroup vpBranchGroup = new BranchGroup();
if (tgArray != null && tgArray.length > 0) {
Group parentGroup = vpBranchGroup;
TransformGroup curTg = null;
for (int n = 0; n < tgArray.length; n++) {
curTg = tgArray[n];
parentGroup.addChild(curTg);
parentGroup = curTg;
}
tgArray[tgArray.length - 1].addChild(vp);
} else
vpBranchGroup.addChild(vp);
return vpBranchGroup;
}
protected void addCanvas3D(Canvas3D c3d) {
setLayout(new BorderLayout());
add(c3d, BorderLayout.CENTER);
doLayout();
}
protected VirtualUniverse createVirtualUniverse() {
return new VirtualUniverse();
}
protected void saveCommandLineArguments(String[] szArgs) {
m_szCommandLineArray = szArgs;
}
protected String[] getCommandLineArguments() {
return m_szCommandLineArray;
}
}
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