--- a/jdk/src/share/demo/applets/WireFrame/ThreeD.java Fri Mar 25 17:57:57 2011 +0100
+++ b/jdk/src/share/demo/applets/WireFrame/ThreeD.java Fri Mar 25 17:59:02 2011 +0100
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1995, 2006, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -29,28 +29,29 @@
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
-/*
- */
-
-/* A set of classes to parse, represent and display 3D wireframe models
- represented in Wavefront .obj format. */
import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Color;
-import java.awt.Event;
import java.awt.event.*;
import java.io.*;
import java.net.URL;
+
+/* A set of classes to parse, represent and display 3D wireframe models
+represented in Wavefront .obj format. */
+@SuppressWarnings("serial")
class FileFormatException extends Exception {
+
public FileFormatException(String s) {
super(s);
}
}
+
/** The representation of a 3D model */
-class Model3D {
+final class Model3D {
+
float vert[];
int tvert[];
int nvert, maxvert;
@@ -58,78 +59,90 @@
int ncon, maxcon;
boolean transformed;
Matrix3D mat;
-
float xmin, xmax, ymin, ymax, zmin, zmax;
- Model3D () {
- mat = new Matrix3D ();
+ Model3D() {
+ mat = new Matrix3D();
mat.xrot(20);
mat.yrot(30);
}
+
/** Create a 3D model by parsing an input stream */
- Model3D (InputStream is) throws IOException, FileFormatException {
- this();
- StreamTokenizer st = new StreamTokenizer(
- new BufferedReader(new InputStreamReader(is, "UTF-8")));
- st.eolIsSignificant(true);
- st.commentChar('#');
- scan:
+ Model3D(InputStream is) throws IOException, FileFormatException {
+ this();
+ StreamTokenizer st = new StreamTokenizer(
+ new BufferedReader(new InputStreamReader(is, "UTF-8")));
+ st.eolIsSignificant(true);
+ st.commentChar('#');
+ scan:
while (true) {
switch (st.nextToken()) {
- default:
- break scan;
- case StreamTokenizer.TT_EOL:
- break;
- case StreamTokenizer.TT_WORD:
- if ("v".equals(st.sval)) {
- double x = 0, y = 0, z = 0;
- if (st.nextToken() == StreamTokenizer.TT_NUMBER) {
- x = st.nval;
+ default:
+ break scan;
+ case StreamTokenizer.TT_EOL:
+ break;
+ case StreamTokenizer.TT_WORD:
+ if ("v".equals(st.sval)) {
+ double x = 0, y = 0, z = 0;
if (st.nextToken() == StreamTokenizer.TT_NUMBER) {
- y = st.nval;
- if (st.nextToken() == StreamTokenizer.TT_NUMBER)
- z = st.nval;
+ x = st.nval;
+ if (st.nextToken() == StreamTokenizer.TT_NUMBER) {
+ y = st.nval;
+ if (st.nextToken() == StreamTokenizer.TT_NUMBER) {
+ z = st.nval;
+ }
+ }
+ }
+ addVert((float) x, (float) y, (float) z);
+ while (st.ttype != StreamTokenizer.TT_EOL && st.ttype
+ != StreamTokenizer.TT_EOF) {
+ st.nextToken();
+ }
+ } else if ("f".equals(st.sval) || "fo".equals(st.sval) || "l".
+ equals(st.sval)) {
+ int start = -1;
+ int prev = -1;
+ int n = -1;
+ while (true) {
+ if (st.nextToken() == StreamTokenizer.TT_NUMBER) {
+ n = (int) st.nval;
+ if (prev >= 0) {
+ add(prev - 1, n - 1);
+ }
+ if (start < 0) {
+ start = n;
+ }
+ prev = n;
+ } else if (st.ttype == '/') {
+ st.nextToken();
+ } else {
+ break;
+ }
+ }
+ if (start >= 0) {
+ add(start - 1, prev - 1);
+ }
+ if (st.ttype != StreamTokenizer.TT_EOL) {
+ break scan;
+ }
+ } else {
+ while (st.nextToken() != StreamTokenizer.TT_EOL
+ && st.ttype != StreamTokenizer.TT_EOF) {
+ // no-op
}
}
- addVert((float) x, (float) y, (float) z);
- while (st.ttype != StreamTokenizer.TT_EOL &&
- st.ttype != StreamTokenizer.TT_EOF)
- st.nextToken();
- } else if ("f".equals(st.sval) || "fo".equals(st.sval) || "l".equals(st.sval)) {
- int start = -1;
- int prev = -1;
- int n = -1;
- while (true)
- if (st.nextToken() == StreamTokenizer.TT_NUMBER) {
- n = (int) st.nval;
- if (prev >= 0)
- add(prev - 1, n - 1);
- if (start < 0)
- start = n;
- prev = n;
- } else if (st.ttype == '/')
- st.nextToken();
- else
- break;
- if (start >= 0)
- add(start - 1, prev - 1);
- if (st.ttype != StreamTokenizer.TT_EOL)
- break scan;
- } else {
- while (st.nextToken() != StreamTokenizer.TT_EOL
- && st.ttype != StreamTokenizer.TT_EOF);
- }
}
}
is.close();
- if (st.ttype != StreamTokenizer.TT_EOF)
+ if (st.ttype != StreamTokenizer.TT_EOF) {
throw new FileFormatException(st.toString());
+ }
}
/** Add a vertex to this model */
int addVert(float x, float y, float z) {
int i = nvert;
- if (i >= maxvert)
+ if (i >= maxvert) {
if (vert == null) {
maxvert = 100;
vert = new float[maxvert * 3];
@@ -139,18 +152,21 @@
System.arraycopy(vert, 0, nv, 0, vert.length);
vert = nv;
}
+ }
i *= 3;
vert[i] = x;
vert[i + 1] = y;
vert[i + 2] = z;
return nvert++;
}
+
/** Add a line from vertex p1 to vertex p2 */
void add(int p1, int p2) {
int i = ncon;
- if (p1 >= nvert || p2 >= nvert)
+ if (p1 >= nvert || p2 >= nvert) {
return;
- if (i >= maxcon)
+ }
+ if (i >= maxcon) {
if (con == null) {
maxcon = 100;
con = new int[maxcon];
@@ -160,6 +176,7 @@
System.arraycopy(con, 0, nv, 0, con.length);
con = nv;
}
+ }
if (p1 > p2) {
int t = p1;
p1 = p2;
@@ -168,79 +185,79 @@
con[i] = (p1 << 16) | p2;
ncon = i + 1;
}
+
/** Transform all the points in this model */
void transform() {
- if (transformed || nvert <= 0)
+ if (transformed || nvert <= 0) {
return;
- if (tvert == null || tvert.length < nvert * 3)
- tvert = new int[nvert*3];
+ }
+ if (tvert == null || tvert.length < nvert * 3) {
+ tvert = new int[nvert * 3];
+ }
mat.transform(vert, tvert, nvert);
transformed = true;
}
- /* Quick Sort implementation
- */
- private void quickSort(int a[], int left, int right)
- {
- int leftIndex = left;
- int rightIndex = right;
- int partionElement;
- if ( right > left)
- {
+ /* Quick Sort implementation
+ */
+ private void quickSort(int a[], int left, int right) {
+ int leftIndex = left;
+ int rightIndex = right;
+ int partionElement;
+ if (right > left) {
- /* Arbitrarily establishing partition element as the midpoint of
- * the array.
- */
- partionElement = a[ ( left + right ) / 2 ];
+ /* Arbitrarily establishing partition element as the midpoint of
+ * the array.
+ */
+ partionElement = a[(left + right) / 2];
- // loop through the array until indices cross
- while( leftIndex <= rightIndex )
- {
- /* find the first element that is greater than or equal to
- * the partionElement starting from the leftIndex.
- */
- while( ( leftIndex < right ) && ( a[leftIndex] < partionElement ) )
- ++leftIndex;
+ // loop through the array until indices cross
+ while (leftIndex <= rightIndex) {
+ /* find the first element that is greater than or equal to
+ * the partionElement starting from the leftIndex.
+ */
+ while ((leftIndex < right) && (a[leftIndex] < partionElement)) {
+ ++leftIndex;
+ }
- /* find an element that is smaller than or equal to
- * the partionElement starting from the rightIndex.
- */
- while( ( rightIndex > left ) &&
- ( a[rightIndex] > partionElement ) )
- --rightIndex;
+ /* find an element that is smaller than or equal to
+ * the partionElement starting from the rightIndex.
+ */
+ while ((rightIndex > left) && (a[rightIndex] > partionElement)) {
+ --rightIndex;
+ }
- // if the indexes have not crossed, swap
- if( leftIndex <= rightIndex )
- {
- swap(a, leftIndex, rightIndex);
- ++leftIndex;
- --rightIndex;
+ // if the indexes have not crossed, swap
+ if (leftIndex <= rightIndex) {
+ swap(a, leftIndex, rightIndex);
+ ++leftIndex;
+ --rightIndex;
+ }
}
- }
- /* If the right index has not reached the left side of array
- * must now sort the left partition.
- */
- if( left < rightIndex )
- quickSort( a, left, rightIndex );
+ /* If the right index has not reached the left side of array
+ * must now sort the left partition.
+ */
+ if (left < rightIndex) {
+ quickSort(a, left, rightIndex);
+ }
- /* If the left index has not reached the right side of array
- * must now sort the right partition.
- */
- if( leftIndex < right )
- quickSort( a, leftIndex, right );
-
- }
- }
+ /* If the left index has not reached the right side of array
+ * must now sort the right partition.
+ */
+ if (leftIndex < right) {
+ quickSort(a, leftIndex, right);
+ }
- private void swap(int a[], int i, int j)
- {
- int T;
- T = a[i];
- a[i] = a[j];
- a[j] = T;
- }
+ }
+ }
+ private void swap(int a[], int i, int j) {
+ int T;
+ T = a[i];
+ a[i] = a[j];
+ a[j] = T;
+ }
/** eliminate duplicate lines */
void compress() {
@@ -259,21 +276,21 @@
}
ncon = d;
}
-
static Color gr[];
/** Paint this model to a graphics context. It uses the matrix associated
- with this model to map from model space to screen space.
- The next version of the browser should have double buffering,
- which will make this *much* nicer */
+ with this model to map from model space to screen space.
+ The next version of the browser should have double buffering,
+ which will make this *much* nicer */
void paint(Graphics g) {
- if (vert == null || nvert <= 0)
+ if (vert == null || nvert <= 0) {
return;
+ }
transform();
if (gr == null) {
gr = new Color[16];
for (int i = 0; i < 16; i++) {
- int grey = (int) (170*(1-Math.pow(i/15.0, 2.3)));
+ int grey = (int) (170 * (1 - Math.pow(i / 15.0, 2.3)));
gr[i] = new Color(grey, grey, grey);
}
}
@@ -281,151 +298,181 @@
int lim = ncon;
int c[] = con;
int v[] = tvert;
- if (lim <= 0 || nvert <= 0)
+ if (lim <= 0 || nvert <= 0) {
return;
+ }
for (int i = 0; i < lim; i++) {
int T = c[i];
int p1 = ((T >> 16) & 0xFFFF) * 3;
int p2 = (T & 0xFFFF) * 3;
int grey = v[p1 + 2] + v[p2 + 2];
- if (grey < 0)
+ if (grey < 0) {
grey = 0;
- if (grey > 15)
+ }
+ if (grey > 15) {
grey = 15;
+ }
if (grey != lg) {
lg = grey;
g.setColor(gr[grey]);
}
g.drawLine(v[p1], v[p1 + 1],
- v[p2], v[p2 + 1]);
+ v[p2], v[p2 + 1]);
}
}
/** Find the bounding box of this model */
void findBB() {
- if (nvert <= 0)
+ if (nvert <= 0) {
return;
+ }
float v[] = vert;
- float xmin = v[0], xmax = xmin;
- float ymin = v[1], ymax = ymin;
- float zmin = v[2], zmax = zmin;
+ float _xmin = v[0], _xmax = _xmin;
+ float _ymin = v[1], _ymax = _ymin;
+ float _zmin = v[2], _zmax = _zmin;
for (int i = nvert * 3; (i -= 3) > 0;) {
float x = v[i];
- if (x < xmin)
- xmin = x;
- if (x > xmax)
- xmax = x;
+ if (x < _xmin) {
+ _xmin = x;
+ }
+ if (x > _xmax) {
+ _xmax = x;
+ }
float y = v[i + 1];
- if (y < ymin)
- ymin = y;
- if (y > ymax)
- ymax = y;
+ if (y < _ymin) {
+ _ymin = y;
+ }
+ if (y > _ymax) {
+ _ymax = y;
+ }
float z = v[i + 2];
- if (z < zmin)
- zmin = z;
- if (z > zmax)
- zmax = z;
+ if (z < _zmin) {
+ _zmin = z;
+ }
+ if (z > _zmax) {
+ _zmax = z;
+ }
}
- this.xmax = xmax;
- this.xmin = xmin;
- this.ymax = ymax;
- this.ymin = ymin;
- this.zmax = zmax;
- this.zmin = zmin;
+ this.xmax = _xmax;
+ this.xmin = _xmin;
+ this.ymax = _ymax;
+ this.ymin = _ymin;
+ this.zmax = _zmax;
+ this.zmin = _zmin;
}
}
+
/** An applet to put a 3D model into a page */
+@SuppressWarnings("serial")
public class ThreeD extends Applet
- implements Runnable, MouseListener, MouseMotionListener {
+ implements Runnable, MouseListener, MouseMotionListener {
+
Model3D md;
boolean painted = true;
float xfac;
int prevx, prevy;
- float xtheta, ytheta;
float scalefudge = 1;
Matrix3D amat = new Matrix3D(), tmat = new Matrix3D();
String mdname = null;
String message = null;
+ @Override
public void init() {
mdname = getParameter("model");
try {
scalefudge = Float.valueOf(getParameter("scale")).floatValue();
- }catch(Exception e){};
+ } catch (Exception ignored) {
+ // fall back to default scalefudge = 1
+ }
amat.yrot(20);
amat.xrot(20);
- if (mdname == null)
+ if (mdname == null) {
mdname = "model.obj";
+ }
resize(getSize().width <= 20 ? 400 : getSize().width,
- getSize().height <= 20 ? 400 : getSize().height);
+ getSize().height <= 20 ? 400 : getSize().height);
addMouseListener(this);
addMouseMotionListener(this);
}
+ @Override
public void destroy() {
removeMouseListener(this);
removeMouseMotionListener(this);
}
+ @Override
public void run() {
InputStream is = null;
try {
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
is = new URL(getDocumentBase(), mdname).openStream();
- Model3D m = new Model3D (is);
+ Model3D m = new Model3D(is);
md = m;
m.findBB();
m.compress();
float xw = m.xmax - m.xmin;
float yw = m.ymax - m.ymin;
float zw = m.zmax - m.zmin;
- if (yw > xw)
+ if (yw > xw) {
xw = yw;
- if (zw > xw)
+ }
+ if (zw > xw) {
xw = zw;
+ }
float f1 = getSize().width / xw;
float f2 = getSize().height / xw;
xfac = 0.7f * (f1 < f2 ? f1 : f2) * scalefudge;
- } catch(Exception e) {
+ } catch (Exception e) {
md = null;
message = e.toString();
}
try {
- if (is != null)
+ if (is != null) {
is.close();
- } catch(Exception e) {
+ }
+ } catch (Exception e) {
}
repaint();
}
+ @Override
public void start() {
- if (md == null && message == null)
+ if (md == null && message == null) {
new Thread(this).start();
+ }
}
+ @Override
public void stop() {
}
- public void mouseClicked(MouseEvent e) {
+ @Override
+ public void mouseClicked(MouseEvent e) {
}
- public void mousePressed(MouseEvent e) {
+ @Override
+ public void mousePressed(MouseEvent e) {
prevx = e.getX();
prevy = e.getY();
e.consume();
}
- public void mouseReleased(MouseEvent e) {
+ @Override
+ public void mouseReleased(MouseEvent e) {
}
- public void mouseEntered(MouseEvent e) {
+ @Override
+ public void mouseEntered(MouseEvent e) {
}
- public void mouseExited(MouseEvent e) {
+ @Override
+ public void mouseExited(MouseEvent e) {
}
- public void mouseDragged(MouseEvent e) {
+ @Override
+ public void mouseDragged(MouseEvent e) {
int x = e.getX();
int y = e.getY();
@@ -444,15 +491,17 @@
e.consume();
}
- public void mouseMoved(MouseEvent e) {
+ @Override
+ public void mouseMoved(MouseEvent e) {
}
+ @Override
public void paint(Graphics g) {
if (md != null) {
md.mat.unit();
md.mat.translate(-(md.xmin + md.xmax) / 2,
- -(md.ymin + md.ymax) / 2,
- -(md.zmin + md.zmax) / 2);
+ -(md.ymin + md.ymax) / 2,
+ -(md.zmin + md.zmax) / 2);
md.mat.mult(amat);
md.mat.scale(xfac, -xfac, 16 * xfac / getSize().width);
md.mat.translate(getSize().width / 2, getSize().height / 2, 8);
@@ -469,20 +518,18 @@
painted = true;
notifyAll();
}
-// private synchronized void waitPainted() {
-// while (!painted)
-// wait();
-// painted = false;
-// }
+ @Override
public String getAppletInfo() {
- return "Title: ThreeD \nAuthor: James Gosling? \nAn applet to put a 3D model into a page.";
+ return "Title: ThreeD \nAuthor: James Gosling? \n"
+ + "An applet to put a 3D model into a page.";
}
+ @Override
public String[][] getParameterInfo() {
String[][] info = {
- {"model", "path string", "The path to the model to be displayed."},
- {"scale", "float", "The scale of the model. Default is 1."}
+ { "model", "path string", "The path to the model to be displayed." },
+ { "scale", "float", "The scale of the model. Default is 1." }
};
return info;
}