diff options
| author | Sven Gothel <[email protected]> | 2000-11-18 06:43:49 +0000 |
|---|---|---|
| committer | Sven Gothel <[email protected]> | 2000-11-18 06:43:49 +0000 |
| commit | 880653d31a8f1ff8384fdbc75b84934bceecfdb8 (patch) | |
| tree | bdafb71416f176d2a4b73bf716c9dc3f13685a8b /demos/RonsDemos/polyoff.java | |
Initial revision
Diffstat (limited to 'demos/RonsDemos/polyoff.java')
| -rw-r--r-- | demos/RonsDemos/polyoff.java | 332 |
1 files changed, 332 insertions, 0 deletions
diff --git a/demos/RonsDemos/polyoff.java b/demos/RonsDemos/polyoff.java new file mode 100644 index 0000000..a79a398 --- /dev/null +++ b/demos/RonsDemos/polyoff.java @@ -0,0 +1,332 @@ +/**
+ * @(#) polyoff.java
+ * @(#) author: Silicon Graphics, Inc. (converted to Java by Ron Cemer)
+ */
+
+/*
+ * Copyright (c) 1993-1997, Silicon Graphics, Inc.
+ * ALL RIGHTS RESERVED
+ * Permission to use, copy, modify, and distribute this software for
+ * any purpose and without fee is hereby granted, provided that the above
+ * copyright notice appear in all copies and that both the copyright notice
+ * and this permission notice appear in supporting documentation, and that
+ * the name of Silicon Graphics, Inc. not be used in advertising
+ * or publicity pertaining to distribution of the software without specific,
+ * written prior permission.
+ *
+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
+ * FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
+ * GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * US Government Users Restricted Rights
+ * Use, duplication, or disclosure by the Government is subject to
+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software
+ * clause at DFARS 252.227-7013 and/or in similar or successor
+ * clauses in the FAR or the DOD or NASA FAR Supplement.
+ * Unpublished-- rights reserved under the copyright laws of the
+ * United States. Contractor/manufacturer is Silicon Graphics,
+ * Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
+ *
+ * OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
+ */
+
+/*
+ * This program demonstrates polygon offset to draw a shaded
+ * polygon and its wireframe counterpart without ugly visual
+ * artifacts ("stitching").
+ */
+
+import java.applet.*;
+import java.awt.*;
+import java.awt.event.*;
+import java.lang.*;
+import java.util.*;
+import java.io.*;
+import java.util.*;
+import gl4java.GLContext;
+import gl4java.awt.GLCanvas;
+
+public class polyoff extends Applet
+{
+ polyoffCanvas canvas = null;
+
+
+ /* Initialize the applet */
+
+
+ public void init()
+ {
+ Dimension d = getSize();
+ setLayout(new BorderLayout());
+ canvas = new polyoffCanvas(d.width, d.height);
+ canvas.requestFocus();
+ add("Center", canvas);
+ }
+
+
+ /* Start the applet */
+
+
+ public void start()
+ {
+ }
+
+
+ /* Stop the applet */
+
+
+ public void stop()
+ {
+ }
+
+
+ /* Destroy the applet */
+
+
+ public void destroy()
+ {
+ canvas.cvsDispose();
+ }
+
+
+ /* Local GLCanvas extension class */
+
+
+ private class polyoffCanvas extends GLCanvas
+ implements KeyListener, MouseListener
+ {
+ private int list;
+ private int spinx = 0;
+ private int spiny = 0;
+ private float tdist = 0.0f;
+ private float polyfactor = 1.0f;
+ private float polyunits = 1.0f;
+
+ public polyoffCanvas(int w, int h)
+ {
+ super(w, h);
+ GLContext.gljNativeDebug = false;
+ GLContext.gljClassDebug = false;
+ }
+
+ public void preInit()
+ {
+ doubleBuffer = true;
+ stereoView = false;
+ }
+
+ public void init()
+ {
+ System.out.println("init(): " + this);
+ reshape(getSize().width, getSize().height);
+
+ /* specify initial properties
+ * create display list with sphere
+ * initialize lighting and depth buffer
+ */
+
+ float light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+ float light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+ float light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+ float light_position[] = { 1.0f, 1.0f, 1.0f, 0.0f };
+
+ float global_ambient[] = { 0.2f, 0.2f, 0.2f, 1.0f };
+
+ gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+
+ list = gl.glGenLists(1);
+ gl.glNewList (list, GL_COMPILE);
+
+ int qobj = glu.gluNewQuadric();
+ glu.gluQuadricOrientation(qobj,GLU_OUTSIDE);
+ glu.gluQuadricNormals(qobj,GLU_SMOOTH);
+ glu.gluQuadricTexture(qobj,false);
+ glu.gluSphere(qobj,1.0f,20,12);
+ glu.gluDeleteQuadric(qobj);
+
+ gl.glEndList();
+
+ gl.glEnable(GL_DEPTH_TEST);
+
+ gl.glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
+ gl.glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
+ gl.glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
+ gl.glLightfv(GL_LIGHT0, GL_POSITION, light_position);
+ gl.glLightModelfv (GL_LIGHT_MODEL_AMBIENT, global_ambient);
+
+ glj.gljCheckGL();
+
+ addKeyListener(this);
+ addMouseListener(this);
+ }
+
+ public void cvsDispose()
+ {
+ System.out.println("destroy(): " + this);
+ removeKeyListener(this);
+ super.cvsDispose();
+ }
+
+ public void reshape(int width, int height)
+ {
+ gl.glViewport(0,0,width,height);
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glLoadIdentity();
+ glu.gluPerspective(45.0,(double)width/(double)height,1.0,10.0);
+ gl.glMatrixMode (GL_MODELVIEW);
+ gl.glLoadIdentity();
+ glu.gluLookAt (0.0, 0.0, 5.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
+ }
+
+ public void display()
+ {
+ if (glj.gljMakeCurrent() == false) return;
+
+ float mat_ambient[] = { 0.8f, 0.8f, 0.8f, 1.0f };
+ float mat_diffuse[] = { 1.0f, 0.0f, 0.5f, 1.0f };
+ float mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+ float gray[] = { 0.8f, 0.8f, 0.8f, 1.0f };
+ float black[] = { 0.0f, 0.0f, 0.0f, 1.0f };
+
+ gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ gl.glPushMatrix();
+ gl.glTranslatef(0.0f, 0.0f, tdist);
+ gl.glRotatef((float)spinx, 1.0f, 0.0f, 0.0f);
+ gl.glRotatef((float)spiny, 0.0f, 1.0f, 0.0f);
+
+ gl.glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, gray);
+ gl.glMaterialfv(GL_FRONT, GL_SPECULAR, black);
+ gl.glMaterialf(GL_FRONT, GL_SHININESS, 0.0f);
+ gl.glEnable(GL_LIGHTING);
+ gl.glEnable(GL_LIGHT0);
+ gl.glEnable(GL_POLYGON_OFFSET_FILL);
+ gl.glPolygonOffset(polyfactor, polyunits);
+ gl.glCallList (list);
+ gl.glDisable(GL_POLYGON_OFFSET_FILL);
+
+ gl.glDisable(GL_LIGHTING);
+ gl.glDisable(GL_LIGHT0);
+ gl.glColor3f(1.0f, 1.0f, 1.0f);
+ gl.glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ gl.glCallList (list);
+ gl.glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+
+ gl.glPopMatrix();
+ gl.glFlush();
+
+ glj.gljSwap();
+ glj.gljCheckGL();
+ glj.gljFree();
+ }
+
+ // Methods required for the implementation of KeyListener
+ public void keyPressed(KeyEvent e)
+ {
+ switch (e.getKeyCode())
+ {
+ case KeyEvent.VK_LEFT:
+ int j = (spiny-5);
+ while (j < 0) j += 360;
+ spiny = j;
+ repaint();
+ break;
+ case KeyEvent.VK_RIGHT:
+ spiny = (spiny + 5) % 360;
+ repaint();
+ break;
+ case KeyEvent.VK_UP:
+ int i = (spinx-5);
+ while (i < 0) i += 360;
+ spinx = i;
+ repaint();
+ break;
+ case KeyEvent.VK_DOWN:
+ spinx = (spinx + 5) % 360;
+ repaint();
+ break;
+ }
+ }
+
+ public void keyReleased(KeyEvent e)
+ {
+ }
+
+ public void keyTyped(KeyEvent e)
+ {
+ switch ((char)e.getKeyChar())
+ {
+ case 'T':
+ if (tdist < 4.0f)
+ {
+ tdist += 0.5f;
+ System.out.println("translation distance is " + tdist);
+ repaint();
+ }
+ break;
+ case 't':
+ if (tdist > -5.0f)
+ {
+ tdist -= 0.5f;
+ System.out.println("translation distance is " + tdist);
+ repaint();
+ }
+ break;
+ case 'F':
+ polyfactor += 0.1f;
+ System.out.println("polyfactor is " + polyfactor);
+ repaint();
+ break;
+ case 'f':
+ polyfactor -= 0.1f;
+ System.out.println("polyfactor is " + polyfactor);
+ repaint();
+ break;
+ case 'U':
+ polyunits += 1.0f;
+ System.out.println("polyunits is " + polyunits);
+ repaint();
+ break;
+ case 'u':
+ polyunits -= 1.0f;
+ System.out.println("polyunits is " + polyunits);
+ repaint();
+ break;
+ }
+ }
+
+ // Methods required for the implementation of MouseListener
+ public void mouseEntered( MouseEvent evt )
+ {
+ Component comp = evt.getComponent();
+ if( comp.equals(this ) )
+ {
+ requestFocus();
+ }
+ }
+
+ public void mouseExited( MouseEvent evt )
+ { }
+ public void mousePressed( MouseEvent evt )
+ { }
+ public void mouseReleased( MouseEvent evt )
+ { }
+ public void mouseClicked( MouseEvent evt )
+ {
+ Component comp = evt.getComponent();
+ if( comp.equals(this ) )
+ {
+ requestFocus();
+ }
+ }
+ }
+}
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