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Diffstat (limited to 'demos/RonsDemos/spots.java')
| -rw-r--r-- | demos/RonsDemos/spots.java | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/demos/RonsDemos/spots.java b/demos/RonsDemos/spots.java new file mode 100644 index 0000000..60a1813 --- /dev/null +++ b/demos/RonsDemos/spots.java @@ -0,0 +1,384 @@ +/**
+ * @(#) [place applet name here].java
+ * @(#) author: [place author here] (converted to Java by Ron Cemer)
+ */
+
+/* Copyright (c) Mark J. Kilgard, 1994. */
+
+/**
+ * (c) Copyright 1993, 1994, 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+ * Unpublished-- rights reserved under the copyright laws of the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(TM) is a trademark of Silicon Graphics, Inc.
+ */
+
+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.GLAnimCanvas;
+import gl4java.applet.SimpleGLAnimApplet1;
+
+public class spots extends SimpleGLAnimApplet1
+{
+ /* Initialize the applet */
+
+
+ public void init()
+ {
+ super.init();
+ Dimension d = getSize();
+ canvas = new spotsCanvas(d.width, d.height);
+ add("Center", canvas);
+ }
+
+
+ private class Light
+ {
+ public float amb[] = new float[4];
+ public float diff[] = new float[4];
+ public float spec[] = new float[4];
+ public float pos[] = new float[4];
+ public float spotDir[] = new float[3];
+ public float spotExp;
+ public float spotCutoff;
+ public float atten[] = new float[3];
+ public float trans[] = new float[3];
+ public float rot[] = new float[3];
+ public float swing[] = new float[3];
+ public float arc[] = new float[3];
+ public float arcIncr[] = new float[3];
+
+ public Light
+ (float ambr, float ambg, float ambb, float amba,
+ float diffr, float diffg, float diffb, float diffa,
+ float specr, float specg, float specb, float speca,
+ float posx, float posy, float posz, float posw,
+ float dirx, float diry, float dirz,
+ float exp,
+ float cutoff,
+ float attenr, float atteng, float attenb,
+ float transx, float transy, float transz,
+ float rotx, float roty, float rotz,
+ float swingx, float swingy, float swingz,
+ float arcx, float arcy, float arcz,
+ float arcincrx, float arcincry, float arcincrz)
+ {
+ amb[0] = ambr;
+ amb[1] = ambg;
+ amb[2] = ambb;
+ amb[3] = amba;
+ diff[0] = diffr;
+ diff[1] = diffg;
+ diff[2] = diffb;
+ diff[3] = diffa;
+ spec[0] = specr;
+ spec[1] = specg;
+ spec[2] = specb;
+ spec[3] = speca;
+ pos[0] = posx;
+ pos[1] = posy;
+ pos[2] = posz;
+ pos[3] = posw;
+ spotDir[0] = dirx;
+ spotDir[1] = diry;
+ spotDir[2] = dirz;
+ spotExp = exp;
+ spotCutoff = cutoff;
+ atten[0] = attenr;
+ atten[1] = atteng;
+ atten[2] = attenb;
+ trans[0] = transx;
+ trans[1] = transy;
+ trans[2] = transz;
+ rot[0] = rotx;
+ rot[1] = roty;
+ rot[2] = rotz;
+ swing[0] = swingx;
+ swing[1] = swingy;
+ swing[2] = swingz;
+ arc[0] = arcx;
+ arc[1] = arcy;
+ arc[2] = arcz;
+ arcIncr[0] = arcincrx;
+ arcIncr[1] = arcincry;
+ arcIncr[2] = arcincrz;
+ }
+ }
+
+
+ /* Local GLAnimCanvas extension class */
+
+
+ private class spotsCanvas extends GLAnimCanvas
+ {
+ private final double M_PI = 3.14159265;
+ private final double TWO_PI = (2.0*M_PI);
+ private final int NUM_LIGHTS = 3;
+
+ private boolean useSAME_AMB_SPEC = true;
+ private float modelAmb[] = {0.2f, 0.2f, 0.2f, 1.0f};
+ private float matAmb[] = {0.2f, 0.2f, 0.2f, 1.0f};
+ private float matDiff[] = {0.8f, 0.8f, 0.8f, 1.0f};
+ private float matSpec[] = {0.4f, 0.4f, 0.4f, 1.0f};
+ private float matEmission[] = {0.0f, 0.0f, 0.0f, 1.0f};
+ private Light[] spots =
+ {
+ new Light
+ (0.2f, 0.0f, 0.0f, 1.0f, /* ambient */
+ 0.8f, 0.0f, 0.0f, 1.0f, /* diffuse */
+ 0.4f, 0.0f, 0.0f, 1.0f, /* specular */
+ 0.0f, 0.0f, 0.0f, 1.0f, /* position */
+ 0.0f, -1.0f, 0.0f, /* direction */
+ 20.0f,
+ 60.0f, /* exponent, cutoff */
+ 1.0f, 0.0f, 0.0f, /* attenuation */
+ 0.0f, 1.25f, 0.0f, /* translation */
+ 0.0f, 0.0f, 0.0f, /* rotation */
+ 20.0f, 0.0f, 40.0f, /* swing */
+ 0.0f, 0.0f, 0.0f, /* arc */
+ (float)(TWO_PI / 70.0), 0.0f, (float)(TWO_PI / 140.0)), /* arc increment */
+ new Light
+ (0.0f, 0.2f, 0.0f, 1.0f, /* ambient */
+ 0.0f, 0.8f, 0.0f, 1.0f, /* diffuse */
+ 0.0f, 0.4f, 0.0f, 1.0f, /* specular */
+ 0.0f, 0.0f, 0.0f, 1.0f, /* position */
+ 0.0f, -1.0f, 0.0f, /* direction */
+ 20.0f,
+ 60.0f, /* exponent, cutoff */
+ 1.0f, 0.0f, 0.0f, /* attenuation */
+ 0.0f, 1.25f, 0.0f, /* translation */
+ 0.0f, 0.0f, 0.0f, /* rotation */
+ 20.0f, 0.0f, 40.0f, /* swing */
+ 0.0f, 0.0f, 0.0f, /* arc */
+ (float)(TWO_PI / 120.0), 0.0f, (float)(TWO_PI / 60.0)), /* arc increment */
+ new Light
+ (0.0f, 0.0f, 0.2f, 1.0f, /* ambient */
+ 0.0f, 0.0f, 0.8f, 1.0f, /* diffuse */
+ 0.0f, 0.0f, 0.4f, 1.0f, /* specular */
+ 0.0f, 0.0f, 0.0f, 1.0f, /* position */
+ 0.0f, -1.0f, 0.0f, /* direction */
+ 20.0f,
+ 60.0f, /* exponent, cutoff */
+ 1.0f, 0.0f, 0.0f, /* attenuation */
+ 0.0f, 1.25f, 0.0f, /* translation */
+ 0.0f, 0.0f, 0.0f, /* rotation */
+ 20.0f, 0.0f, 40.0f, /* swing */
+ 0.0f, 0.0f, 0.0f, /* arc */
+ (float)(TWO_PI / 50.0), 0.0f, (float)(TWO_PI / 100.0)), /* arc increment */
+ };
+ float spin = 0.0f;
+
+ public spotsCanvas(int w, int h)
+ {
+ super(w, h);
+ GLContext.gljNativeDebug = false;
+ GLContext.gljClassDebug = false;
+ setAnimateFps(30.0);
+ }
+
+ public void preInit()
+ {
+ doubleBuffer = true;
+ stereoView = false;
+ }
+
+ public void init()
+ {
+ System.out.println("init(): " + this);
+ reshape(getSize().width, getSize().height);
+
+ gl.glMatrixMode(GL_PROJECTION);
+ gl.glFrustum(-1.0f, 1.0f, -1.0f, 1.0f, 2.0f, 6.0f);
+
+ gl.glMatrixMode(GL_MODELVIEW);
+ gl.glTranslatef(0.0f, 0.0f, -3.0f);
+ gl.glRotatef(45.0f, 1.0f, 0.0f, 0.0f);
+
+ gl.glEnable(GL_LIGHTING);
+ gl.glEnable(GL_NORMALIZE);
+
+ gl.glLightModelfv(GL_LIGHT_MODEL_AMBIENT, modelAmb);
+ gl.glLightModelf(GL_LIGHT_MODEL_LOCAL_VIEWER, 1.0f);
+ gl.glLightModelf(GL_LIGHT_MODEL_TWO_SIDE, 0.0f);
+
+ gl.glMaterialfv(GL_FRONT, GL_AMBIENT, matAmb);
+ gl.glMaterialfv(GL_FRONT, GL_DIFFUSE, matDiff);
+ gl.glMaterialfv(GL_FRONT, GL_SPECULAR, matSpec);
+ gl.glMaterialfv(GL_FRONT, GL_EMISSION, matEmission);
+ gl.glMaterialf(GL_FRONT, GL_SHININESS, 10.0f);
+
+ initLights();
+
+ glj.gljCheckGL();
+ }
+
+ public void reshape(int width, int height)
+ {
+ gl.glViewport(0,0,width,height);
+ }
+
+ public void display()
+ {
+ if (glj.gljMakeCurrent() == false) return;
+
+ spin += 0.5f;
+ if (spin > 360.0f) spin -= 360.0f;
+
+ gl.glClear(GL_COLOR_BUFFER_BIT);
+
+ gl.glPushMatrix();
+ gl.glRotatef(spin, 0.0f, 1.0f, 0.0f);
+
+ aimLights();
+ setLights();
+
+ gl.glPushMatrix();
+ gl.glRotatef(-90.0f, 1.0f, 0.0f, 0.0f);
+ gl.glScalef(1.9f, 1.9f, 1.0f);
+ gl.glTranslatef(-0.5f, -0.5f, 0.0f);
+ drawPlane(16, 16);
+ gl.glPopMatrix();
+
+ drawLights();
+ gl.glPopMatrix();
+
+ glj.gljSwap();
+ glj.gljCheckGL();
+ glj.gljFree();
+
+ //if (!isSuspended()) repaint(); // Animate at full speed.
+ }
+
+ private void initLights()
+ {
+ for (int k = 0; k < NUM_LIGHTS; ++k)
+ {
+ int lt = GL_LIGHT0 + k;
+ Light light = spots[k];
+ gl.glEnable(lt);
+ gl.glLightfv(lt, GL_AMBIENT, light.amb);
+ gl.glLightfv(lt, GL_DIFFUSE, light.diff);
+ if (useSAME_AMB_SPEC)
+ gl.glLightfv(lt, GL_SPECULAR, light.amb);
+ else
+ gl.glLightfv(lt, GL_SPECULAR, light.spec);
+ gl.glLightf(lt, GL_SPOT_EXPONENT, light.spotExp);
+ gl.glLightf(lt, GL_SPOT_CUTOFF, light.spotCutoff);
+ gl.glLightf(lt, GL_CONSTANT_ATTENUATION, light.atten[0]);
+ gl.glLightf(lt, GL_LINEAR_ATTENUATION, light.atten[1]);
+ gl.glLightf(lt, GL_QUADRATIC_ATTENUATION, light.atten[2]);
+ }
+ }
+
+ private void aimLights()
+ {
+ for (int k = 0; k < NUM_LIGHTS; ++k)
+ {
+ Light light = spots[k];
+ light.rot[0] = light.swing[0] * (float)Math.sin(light.arc[0]);
+ light.arc[0] += light.arcIncr[0];
+ if (light.arc[0] > TWO_PI)
+ light.arc[0] -= TWO_PI;
+ light.rot[1] = light.swing[1] * (float)Math.sin(light.arc[1]);
+ light.arc[1] += light.arcIncr[1];
+ if (light.arc[1] > TWO_PI)
+ light.arc[1] -= TWO_PI;
+ light.rot[2] = light.swing[2] * (float)Math.sin(light.arc[2]);
+ light.arc[2] += light.arcIncr[2];
+ if (light.arc[2] > TWO_PI)
+ light.arc[2] -= TWO_PI;
+ }
+ }
+
+ private void setLights()
+ {
+ for (int k = 0; k < NUM_LIGHTS; ++k)
+ {
+ int lt = GL_LIGHT0 + k;
+ Light light = spots[k];
+ gl.glPushMatrix();
+ gl.glTranslatef(light.trans[0], light.trans[1], light.trans[2]);
+ gl.glRotatef(light.rot[0], 1, 0, 0);
+ gl.glRotatef(light.rot[1], 0, 1, 0);
+ gl.glRotatef(light.rot[2], 0, 0, 1);
+ gl.glLightfv(lt, GL_POSITION, light.pos);
+ gl.glLightfv(lt, GL_SPOT_DIRECTION, light.spotDir);
+ gl.glPopMatrix();
+ }
+ }
+
+ private void drawLights()
+ {
+ gl.glDisable(GL_LIGHTING);
+ for (int k = 0; k < NUM_LIGHTS; ++k)
+ {
+ Light light = spots[k];
+ gl.glColor4fv(light.diff);
+ gl.glPushMatrix();
+ gl.glTranslatef(light.trans[0], light.trans[1], light.trans[2]);
+ gl.glRotatef(light.rot[0], 1, 0, 0);
+ gl.glRotatef(light.rot[1], 0, 1, 0);
+ gl.glRotatef(light.rot[2], 0, 0, 1);
+ gl.glBegin(GL_LINES);
+ gl.glVertex3f(light.pos[0], light.pos[1], light.pos[2]);
+ gl.glVertex3f(light.spotDir[0], light.spotDir[1], light.spotDir[2]);
+ gl.glEnd();
+ gl.glPopMatrix();
+ }
+ gl.glEnable(GL_LIGHTING);
+ }
+
+ private void drawPlane(int w, int h)
+ {
+ int i, j;
+ float dw = 1.0f / (float)w;
+ float dh = 1.0f / (float)h;
+ gl.glNormal3f(0.0f, 0.0f, 1.0f);
+ for (j = 0; j < h; ++j)
+ {
+ gl.glBegin(GL_TRIANGLE_STRIP);
+ for (i = 0; i <= w; ++i)
+ {
+ gl.glVertex2f(dw * i, dh * (j + 1));
+ gl.glVertex2f(dw * i, dh * j);
+ }
+ gl.glEnd();
+ }
+ }
+ }
+}
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