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/surface.java | |
Initial revision
Diffstat (limited to 'demos/RonsDemos/surface.java')
| -rw-r--r-- | demos/RonsDemos/surface.java | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/demos/RonsDemos/surface.java b/demos/RonsDemos/surface.java new file mode 100644 index 0000000..2d959b8 --- /dev/null +++ b/demos/RonsDemos/surface.java @@ -0,0 +1,263 @@ +/**
+ * @(#) surface.java
+ * @(#) author: Silicon Graphics (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 draws a NURBS surface in the shape of a
+ * symmetrical hill. The 'c' keyboard key allows you to
+ * toggle the visibility of the control points themselves.
+ * Note that some of the control points are hidden by the
+ * surface itself.
+ */
+
+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 surface extends Applet
+{
+ surfaceCanvas canvas = null;
+
+
+ /* Initialize the applet */
+
+
+ public void init()
+ {
+ Dimension d = getSize();
+ setLayout(new BorderLayout());
+ canvas = new surfaceCanvas(d.width, d.height);
+ add("Center", canvas);
+ }
+
+
+ /* Start the applet */
+
+
+ public void start()
+ {
+ }
+
+
+ /* Stop the applet */
+
+
+ public void stop()
+ {
+ }
+
+
+ /* Destroy the applet */
+
+
+
+ /* Local GLCanvas extension class */
+
+
+ private class surfaceCanvas extends GLCanvas implements MouseListener
+ {
+ float ctlpoints[] = new float [4*4*3];
+ boolean showPoints = false;
+ int theNurb;
+
+ public surfaceCanvas(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);
+
+ float mat_diffuse[] = { 0.7f, 0.7f, 0.7f, 1.0f };
+ float mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
+ float mat_shininess[] = { 100.0f };
+
+ gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+ gl.glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
+ gl.glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
+ gl.glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
+
+ gl.glEnable(GL_LIGHTING);
+ gl.glEnable(GL_LIGHT0);
+ gl.glEnable(GL_DEPTH_TEST);
+ gl.glEnable(GL_AUTO_NORMAL);
+ gl.glEnable(GL_NORMALIZE);
+
+ init_surface();
+
+ theNurb = glu.gluNewNurbsRenderer();
+ glu.gluNurbsProperty(theNurb, GLU_SAMPLING_TOLERANCE, 25.0f);
+ glu.gluNurbsProperty(theNurb, GLU_DISPLAY_MODE, GLU_FILL);
+
+ glj.gljCheckGL();
+
+ addMouseListener(this);
+ }
+
+ public void cvsDispose()
+ {
+ System.out.println("destroy(): " + this);
+ removeMouseListener(this);
+ super.cvsDispose();
+ }
+
+ public void reshape(int width, int height)
+ {
+ gl.glViewport(0,0,width,height);
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glLoadIdentity();
+ glu.gluPerspective(45.0f,(double)width/(double)height,3.0f,8.0f);
+ gl.glMatrixMode(GL_MODELVIEW);
+ gl.glLoadIdentity();
+ gl.glTranslatef(0.0f, 0.0f, -5.0f);
+ }
+
+ public void display()
+ {
+ if (glj.gljMakeCurrent() == false) return;
+
+ float knots[] = {0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f, 1.0f};
+ int i, j;
+
+ gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ gl.glPushMatrix();
+ gl.glRotatef(330.0f, 1.0f,0.0f,0.0f);
+ gl.glScalef (0.5f, 0.5f, 0.5f);
+
+ glu.gluBeginSurface(theNurb);
+ glu.gluNurbsSurface
+ (theNurb,
+ 8,
+ knots,
+ 8,
+ knots,
+ (4 * 3),
+ 3,
+ ctlpoints,
+ 4,
+ 4,
+ GL_MAP2_VERTEX_3);
+ glu.gluEndSurface(theNurb);
+
+ if (showPoints)
+ {
+ gl.glPointSize(5.0f);
+ gl.glDisable(GL_LIGHTING);
+ gl.glColor3f(1.0f, 1.0f, 0.0f);
+ gl.glBegin(GL_POINTS);
+ for (i = 0; i < 4; i++)
+ {
+ for (j = 0; j < 4; j++)
+ {
+ gl.glVertex3f
+ (ctlpoints[(i*12)+(j*3)+0],
+ ctlpoints[(i*12)+(j*3)+1],
+ ctlpoints[(i*12)+(j*3)+2]);
+ }
+ }
+ gl.glEnd();
+ gl.glEnable(GL_LIGHTING);
+ }
+ gl.glPopMatrix();
+ gl.glFlush();
+
+ glj.gljSwap();
+ glj.gljCheckGL();
+ glj.gljFree();
+ }
+
+ private void init_surface()
+ {
+ for (int u = 0; u < 4; u++)
+ {
+ for (int v = 0; v < 4; v++)
+ {
+ ctlpoints[(u*12)+(v*3)+0] = 2.0f*((float)u - 1.5f);
+ ctlpoints[(u*12)+(v*3)+1] = 2.0f*((float)v - 1.5f);
+ if ( (u == 1 || u == 2) && (v == 1 || v == 2) )
+ ctlpoints[(u*12)+(v*3)+2] = 3.0f;
+ else
+ ctlpoints[(u*12)+(v*3)+2] = -3.0f;
+ }
+ }
+ }
+
+ // Methods required for the implementation of MouseListener
+ public void mouseEntered( MouseEvent evt )
+ {
+ }
+
+ public void mouseExited( MouseEvent evt )
+ {
+ }
+
+ public void mousePressed( MouseEvent evt )
+ {
+ showPoints = !showPoints;
+ repaint();
+ }
+
+ public void mouseReleased( MouseEvent evt )
+ {
+ }
+
+ public void mouseClicked( MouseEvent evt )
+ {
+ }
+ }
+}
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