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/**
* @(#) olympicCvs.java
*/
import gl4java.awt.GLAnimCanvas;
import java.awt.*;
import java.awt.event.*;
import java.lang.Math;
class olympicCvs extends GLAnimCanvas
{
/**
* Instead of using suspend (JAVA2)
*
* @see run
*/
protected boolean threadSuspended = true;
static final double M_PI= 3.141592654;
static final double M_2PI= 2*3.141592654;
static final int
XSIZE= 100,
YSIZE= 75,
RINGS= 5,
BLUERING= 0,
BLACKRING= 1,
REDRING= 2,
YELLOWRING =3,
GREENRING =4,
BACKGROUND =8,
BLACK = 0,
RED=1,
GREEN=2,
YELLOW=3,
BLUE=4,
MAGENTA=5,
CYAN=6,
WHITE=7;
byte rgb_colors[][];
int mapped_colors[];
float dests[][];
float offsets[][];
float angs[];
float rotAxis[][];
int iters[];
int theTorus;
float lmodel_ambient[] = {0.0f, 0.0f, 0.0f, 0.0f};
float lmodel_twoside[] = {0.0f, 0.0f, 0.0f, 0.0f};
float lmodel_local[] = {0.0f, 0.0f, 0.0f, 0.0f};
float light0_ambient[] = {0.1f, 0.1f, 0.1f, 1.0f};
float light0_diffuse[] = {1.0f, 1.0f, 1.0f, 0.0f};
float light0_position[] = {0.8660254f, 0.5f, 1f, 0f};
float light0_specular[] = {1.0f, 1.0f, 1.0f, 0.0f};
float bevel_mat_ambient[] = {0.0f, 0.0f, 0.0f, 1.0f};
float bevel_mat_shininess[] = {40.0f, 0f, 0f, 0f};
float bevel_mat_specular[] = {1.0f, 1.0f, 1.0f, 0.0f};
float bevel_mat_diffuse[] = {1.0f, 0.0f, 0.0f, 0.0f};
public olympicCvs (int w, int h,
String glClass, String gluClass )
{
super(w, h, glClass, gluClass );
}
public void init()
{
rgb_colors=new byte[RINGS][3];
mapped_colors=new int [RINGS];
dests=new float [RINGS][3];
offsets=new float[RINGS][3];
angs=new float[RINGS];
rotAxis=new float[RINGS][3];
iters=new int[RINGS];
int i;
float top_y = 1.0f;
float bottom_y = 0.0f;
float top_z = 0.15f;
float bottom_z = 0.69f;
float spacing = 2.5f;
ReInit();
for (i = 0; i < RINGS; i++) {
rgb_colors[i][0] = rgb_colors[i][1] = rgb_colors[i][2] = (byte)0;
}
rgb_colors[BLUERING][2] = (byte)255;
rgb_colors[REDRING][0] = (byte)255;
rgb_colors[GREENRING][1] = (byte)255;
rgb_colors[YELLOWRING][0] = (byte)255;
rgb_colors[YELLOWRING][1] = (byte)255;
mapped_colors[BLUERING] = BLUE;
mapped_colors[REDRING] = RED;
mapped_colors[GREENRING] = GREEN;
mapped_colors[YELLOWRING] = YELLOW;
mapped_colors[BLACKRING] = BLACK;
dests[BLUERING][0] = -spacing;
dests[BLUERING][1] = top_y;
dests[BLUERING][2] = top_z;
dests[BLACKRING][0] = 0.0f;
dests[BLACKRING][1] = top_y;
dests[BLACKRING][2] = top_z;
dests[REDRING][0] = spacing;
dests[REDRING][1] = top_y;
dests[REDRING][2] = top_z;
dests[YELLOWRING][0] = -spacing / 2.0f;
dests[YELLOWRING][1] = bottom_y;
dests[YELLOWRING][2] = bottom_z;
dests[GREENRING][0] = spacing / 2.0f;
dests[GREENRING][1] = bottom_y;
dests[GREENRING][2] = bottom_z;
theTorus = gl.glGenLists(1);
gl.glNewList(theTorus, GL_COMPILE);
FillTorus(0.1f, 8, 1.0f, 25);
gl.glEndList();
gl.glEnable(GL_CULL_FACE);
gl.glCullFace(GL_BACK);
gl.glEnable(GL_DEPTH_TEST);
gl.glClearDepth(1.0);
gl.glLightfv(GL_LIGHT0, GL_AMBIENT, light0_ambient);
gl.glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
gl.glLightfv(GL_LIGHT0, GL_SPECULAR, light0_specular);
gl.glLightfv(GL_LIGHT0, GL_POSITION, light0_position);
gl.glEnable(GL_LIGHT0);
gl.glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, lmodel_local);
gl.glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
gl.glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
gl.glEnable(GL_LIGHTING);
gl.glClearColor(0.5f, 0.5f, 0.5f, 0.0f);
gl.glMaterialfv(GL_FRONT, GL_AMBIENT, bevel_mat_ambient);
gl.glMaterialfv(GL_FRONT, GL_SHININESS, bevel_mat_shininess);
gl.glMaterialfv(GL_FRONT, GL_SPECULAR, bevel_mat_specular);
gl.glMaterialfv(GL_FRONT, GL_DIFFUSE, bevel_mat_diffuse);
gl.glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
gl.glEnable(GL_COLOR_MATERIAL);
gl.glShadeModel(GL_SMOOTH);
gl.glMatrixMode(GL_PROJECTION);
glu.gluPerspective(45f, 1.33f, 0.1f, 100.0f);
gl.glMatrixMode(GL_MODELVIEW);
glj.gljCheckGL();
}
public void display()
{
int i;
/* Standard GL4Java Init */
if( glj.gljMakeCurrent(true) == false )
{
System.out.println("problem in use() method");
System.exit(0);
return;
}
gl.glPushMatrix();
gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glu.gluLookAt(0, 0, 10, 0, 0, 0, 0, 1, 0);
for (i = 0; i < RINGS; i++) {
gl.glColor3ubv(rgb_colors[i]);
gl.glPushMatrix();
gl.glTranslatef(dests[i][0] + offsets[i][0], dests[i][1] + offsets[i][1],
dests[i][2] + offsets[i][2]);
gl.glRotatef(angs[i], rotAxis[i][0], rotAxis[i][1], rotAxis[i][2]);
gl.glCallList(theTorus);
gl.glPopMatrix();
}
gl.glPopMatrix();
glj.gljSwap();
glj.gljCheckGL();
glj.gljFree();
}
public void animationCalc()
{
int i, j;
for (i = 0; i < RINGS; i++) {
if (iters[i]!=0) {
for (j = 0; j < 3; j++) {
offsets[i][j] = Clamp(iters[i], offsets[i][j]);
}
angs[i] = Clamp(iters[i], angs[i]);
iters[i]--;
}
}
if (iters[0]==0)
{
shallWeRender=false;
}
}
public void ReInit()
{
int i;
float deviation;
deviation = MyRand() / 2;
deviation = deviation * deviation;
for (i = 0; i < RINGS; i++) {
offsets[i][0] = MyRand();
offsets[i][1] = MyRand();
offsets[i][2] = MyRand();
angs[i] = (float) (260.0 * MyRand());
rotAxis[i][0] = MyRand();
rotAxis[i][1] = MyRand();
rotAxis[i][2] = MyRand();
iters[i] = ( int ) (deviation * MyRand() + 60.0);
}
}
public void FillTorus(float rc, int numc, float rt, int numt)
{
int i, j, k;
double s, t;
float x, y, z;
for (i = 0; i < numc; i++) {
gl.glBegin(GL_QUAD_STRIP);
for (j = 0; j <= numt; j++) {
for (k = 1; k >= 0; k--) {
s = (i + k) % numc + 0.5;
t = j % numt;
x = (float) Math.cos(t * M_2PI / numt) * (float) Math.cos(s * M_2PI / numc);
y = (float) Math.sin(t * M_2PI / numt) * (float) Math.cos(s * M_2PI / numc);
z = (float) Math.sin(s * M_2PI / numc);
gl.glNormal3f(x, y, z);
x = (rt + rc * (float) Math.cos(s * M_2PI / numc)) * (float) Math.cos(t * M_2PI / numt);
y = (rt + rc * (float) Math.cos(s * M_2PI / numc)) * (float) Math.sin(t * M_2PI / numt);
z = rc * (float) Math.sin(s * M_2PI / numc);
gl.glVertex3f(x, y, z);
}
}
gl.glEnd();
}
}
public float Clamp(int iters_left, float t)
{
if (iters_left < 3) {
return 0.0f;
}
return (iters_left - 2) * t / iters_left;
}
public float MyRand()
{
// return 10.0 * (drand48() - 0.5);
return (float) ( 10.0 * (Math.random() - 0.5) );
}
}