static void draw_ball(void)
{
GLfloat a, b;
GLfloat da = 18.0, db = 18.0;
GLfloat radius = 1.0;
GLuint color;
GLfloat x, y, z;
color = 0;
for (a = -90.0; a+da <= 90.0; a += da) {
glBegin(GL_QUAD_STRIP);
for (b = 0.0; b <=360.0 ; b += db) {
if (color)
glIndexf(4);
else
glIndexf(15);
x = COS(b) * COS(a);
y = SIN(b) * COS(a);
z = SIN(a);
glVertex3f(x, y, z);
x = radius * COS(b) * COS(a+da);
y = radius * SIN(b) * COS(a+da);
z = radius * SIN(a+da);
glVertex3f(x, y, z);
color = 1 - color;
}
glEnd();
}
}
static void Idle(void)
{
if (overlayInit == GL_FALSE) {
glutUseLayer(GLUT_OVERLAY);
glClear(GL_COLOR_BUFFER_BIT);
/* glColor3f(1.0, 0.0, 0.0);*/
glIndexf( 2.0 );
glBegin(GL_POLYGON);
glVertex2i(windW/4-10, windH/4-10);
glVertex2i(windW/2-10, windH/4-10);
glVertex2i(windW/2-10, windH/2-10);
glVertex2i(windW/4-10, windH/2-10);
glEnd();
glIndexf( 0.0 );
glBegin(GL_POLYGON);
glVertex2i(windW/4, windH/4);
glVertex2i(windW/2, windH/4);
glVertex2i(windW/2, windH/2);
glVertex2i(windW/4, windH/2);
glEnd();
glIndexf( 1.0 );
glBegin(GL_POLYGON);
glVertex2i(windW/4+10, windH/4+10);
glVertex2i(windW/2+10, windH/4+10);
glVertex2i(windW/2+10, windH/2+10);
glVertex2i(windW/4+10, windH/2+10);
glEnd();
glutUseLayer(GLUT_NORMAL);
overlayInit = GL_TRUE;
}
MoveStars();
ShowStars();
if (nitro > 0) {
speed = (float)(nitro / 10) + 1.0;
if (speed > MAXWARP) {
speed = MAXWARP;
}
if (++nitro > MAXWARP*10) {
nitro = -nitro;
}
} else if (nitro < 0) {
nitro++;
speed = (float)(-nitro / 10) + 1.0;
if (speed > MAXWARP) {
speed = MAXWARP;
}
}
glFlush();
if (doubleBuffer) {
glutSwapBuffers();
}
}
static void
move_on(void)
{
display_count++;
if (display_count == 2) {
damage_expectation = 1;
glutIconifyWindow();
glutTimerFunc(500, timer, 777);
}
if (display_count == 4) {
printf("display_count == 4\n");
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutCreateSubWindow(main_win, 10, 10, 150, 150);
glClearColor(0.5, 0.5, 0.5, 0.0);
glutDisplayFunc(render_sub);
glutInitDisplayMode(GLUT_SINGLE | GLUT_INDEX);
glutEstablishOverlay();
glutCopyColormap(main_win);
glutSetColor((transP + 1) % 2, 0.0, 1.0, 1.0);
glutRemoveOverlay();
glutEstablishOverlay();
glutCopyColormap(main_win);
glutCopyColormap(main_win);
glutSetColor((transP + 1) % 2, 1.0, 1.0, 1.0);
glClearIndex(transP);
glIndexf((transP + 1) % 2);
glutSetWindow(main_win);
glutRemoveOverlay();
glutTimerFunc(500, time2, 888);
}
}
static void SetColor(int c)
{
if (glutGet(GLUT_WINDOW_RGBA))
glColor3fv(RGBMap[c]);
else
glIndexf(c);
}
/*
=======================================================================================================================
sets the color of the next object to draw
=======================================================================================================================
*/
setColor(int c)
{
glColor4fv(&materialColor[c][0]);
if(useLighting)
{
{
if(useRGB)
{
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, &materialColor[c][0]);
}
else
{
glMaterialfv(GL_FRONT_AND_BACK, GL_COLOR_INDEXES, &materialColor[c][0]);
}
}
}
else
{
if(useRGB)
{
glColor4fv(&materialColor[c][0]);
}
else
{
glIndexf(materialColor[c][1]);
}
}
}
void setspherecolor(float c)
{
if (useci)
{
GLfloat ndx = c * (float)(ncolors - 1);
GLfloat mat_ndxs[] = { ndx * 0.3f, ndx * 0.8f, ndx };
glIndexf(ndx);
glMaterialfv(GL_FRONT, GL_COLOR_INDEXES, mat_ndxs);
}
else
{
float mat[4] = { spherered(c), spheregreen(c), sphereblue(c), 0.25f };
glColor3f(spherered(c), spheregreen(c), sphereblue(c));
glMaterialfv(GL_FRONT, GL_AMBIENT, mat);
glMaterialfv(GL_FRONT, GL_DIFFUSE, mat);
}
}
static void draw(void)
{
GLint i;
glClear(GL_COLOR_BUFFER_BIT);
glIndexf(3);
glBegin(GL_LINES);
for (i = -5; i <= 5; i++) {
glVertex2i(i, -5);
glVertex2i(i, 5);
}
for (i = -5; i <= 5; i++) {
glVertex2i(-5,i);
glVertex2i(5,i);
}
for (i = -5; i <= 5; i++) {
glVertex2i(i, -5);
glVertex2f(i*1.15, -5.9);
}
glVertex2f(-5.3, -5.35);
glVertex2f(5.3, -5.35);
glVertex2f(-5.75, -5.9);
glVertex2f(5.75, -5.9);
glEnd();
glFlush();
glPushMatrix();
glTranslatef(Xpos, Ypos, 0.0);
glScalef(2.0, 2.0, 2.0);
glRotatef(8.0, 0.0, 0.0, 1.0);
glRotatef(90.0, 1.0, 0.0, 0.0);
glRotatef(Zrot, 0.0, 0.0, 1.0);
glCallList(Ball);
glPopMatrix();
glFlush();
}
static void Animate(void)
{
struct coord *coord;
struct facet *facet;
float *lastColor;
float *thisColor;
GLint i, j;
glClear(clearMask);
if (nextFrame || !stepMode) {
curFrame++;
}
if (curFrame >= theMesh.frames) {
curFrame = 0;
}
if ((nextFrame || !stepMode) && spinMode) {
glRotatef(5.0, 0.0, 0.0, 1.0);
}
nextFrame = 0;
for (i = 0; i < theMesh.widthX; i++) {
glBegin(GL_QUAD_STRIP);
lastColor = NULL;
for (j = 0; j < theMesh.widthY; j++) {
facet = GETFACET(curFrame, i, j);
if (!smooth && lighting) {
glNormal3fv(facet->normal);
}
if (lighting) {
if (rgb) {
thisColor = facet->color;
glColor3fv(facet->color);
} else {
thisColor = facet->color;
glMaterialfv(GL_FRONT_AND_BACK, GL_COLOR_INDEXES,
facet->color);
}
} else {
if (rgb) {
thisColor = facet->color;
glColor3fv(facet->color);
} else {
thisColor = facet->color;
glIndexf(facet->color[1]);
}
}
if (!lastColor || (thisColor[0] != lastColor[0] && smooth)) {
if (lastColor) {
glEnd();
glBegin(GL_QUAD_STRIP);
}
coord = GETCOORD(curFrame, i, j);
if (smooth && lighting) {
glNormal3fv(coord->normal);
}
glVertex3fv(coord->vertex);
coord = GETCOORD(curFrame, i+1, j);
if (smooth && lighting) {
glNormal3fv(coord->normal);
}
glVertex3fv(coord->vertex);
}
coord = GETCOORD(curFrame, i, j+1);
if (smooth && lighting) {
glNormal3fv(coord->normal);
}
glVertex3fv(coord->vertex);
coord = GETCOORD(curFrame, i+1, j+1);
if (smooth && lighting) {
glNormal3fv(coord->normal);
}
glVertex3fv(coord->vertex);
lastColor = thisColor;
}
glEnd();
}
glFlush();
if (doubleBuffer) {
glutSwapBuffers();
}
}
/////////////////////////////////////////////////////////
// Render
//
void GEMglIndexf :: render(GemState *state) {
glIndexf (c);
}
int display(SDL_Window *window, int advance)
{
static int first = 1;
static double start = 0., elapsed = 0., mpixels = 0.;
static unsigned long frames = 0;
static char temps[256];
GLfloat xaspect, yaspect;
if (first)
{
buildfont();
GLfloat id4[] = { 1., 1., 1., 1. };
GLfloat light0_amb[] = { 0.3f, 0.3f, 0.3f, 1.0f };
GLfloat light0_dif[] = { 0.8f, 0.8f, 0.8f, 1.0f };
GLfloat light0_pos[] = { 1., 1., 1., 0. };
spherelist = glGenLists(1);
if (!(spherequad = gluNewQuadric()))
_throw("Could not allocate GLU quadric object");
glNewList(spherelist, GL_COMPILE);
gluSphere(spherequad, 1.3, slices, stacks);
glEndList();
if (!locolor)
{
if (useci)
{
glMaterialf(GL_FRONT, GL_SHININESS, 50.);
}
else
{
glMaterialfv(GL_FRONT, GL_AMBIENT, id4);
glMaterialfv(GL_FRONT, GL_DIFFUSE, id4);
glMaterialfv(GL_FRONT, GL_SPECULAR, id4);
glMaterialf(GL_FRONT, GL_SHININESS, 50.);
glLightfv(GL_LIGHT0, GL_AMBIENT, light0_amb);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_dif);
glLightfv(GL_LIGHT0, GL_SPECULAR, id4);
}
glLightfv(GL_LIGHT0, GL_POSITION, light0_pos);
glLightf(GL_LIGHT0, GL_SPOT_CUTOFF, 180.);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
if (locolor)
glShadeModel(GL_FLAT);
else
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
SDL_snprintf(temps, 255, "Measuring performance ...");
first = 0;
}
if (advance)
{
z -= 0.5;
if (z < -29.)
{
if (useci)
{
colorscheme = (colorscheme + 1) % NSCHEMES;
_catch(setcolorscheme(window, ncolors, colorscheme));
}
z = -3.5;
}
outer_angle += 0.1f;
if (outer_angle > 360.0f)
outer_angle -= 360.0f;
middle_angle -= 0.37f;
if (middle_angle < -360.0f)
middle_angle += 360.0f;
inner_angle += 0.63f;
if (inner_angle > 360.0f)
inner_angle -= 360.0f;
lonesphere_color += 0.005f;
if (lonesphere_color > 1.0f)
lonesphere_color -= 1.0f;
}
if (usestereo)
{
renderspheres(GL_BACK_LEFT);
renderspheres(GL_BACK_RIGHT);
}
else
{
renderspheres(GL_BACK);
}
glDrawBuffer(GL_BACK);
glPushAttrib(GL_CURRENT_BIT);
glPushAttrib(GL_LIST_BIT);
glPushAttrib(GL_ENABLE_BIT);
glDisable(GL_LIGHTING);
if (useci)
glIndexf(254.);
else
glColor3f(1., 1., 1.);
xaspect = (GLfloat)width / (GLfloat)(min(width, height));
yaspect = (GLfloat)height / (GLfloat)(min(width, height));
glRasterPos3f(-0.95f * xaspect, -0.95f * yaspect, -1.5f);
glListBase(fontlistbase);
glCallLists((GLsizei)strlen(temps), GL_UNSIGNED_BYTE, temps);
glPopAttrib();
glPopAttrib();
glPopAttrib();
SDL_GL_SwapWindow(window);
if (start > 0.)
{
elapsed += rrtime() - start;
frames++;
totalframes++;
mpixels += (double)width * (double)height / 1000000.;
if (elapsed > benchtime || (maxframes && totalframes > maxframes))
{
SDL_snprintf(temps, 255, "%f frames/sec - %f Mpixels/sec",
(double)frames / elapsed, mpixels / elapsed);
printf("%s\n", temps);
elapsed = mpixels = 0.;
frames = 0;
}
}
if (maxframes && totalframes > maxframes)
goto bailout;
start = rrtime();
return 0;
bailout:
if (spherequad)
{
gluDeleteQuadric(spherequad);
spherequad = NULL;
}
return -1;
}
template< > inline void glIndex< float > ( float c ) { glIndexf(c); };
void glIndexfv(const GLfloat *c) {
glIndexf(*c);
}
M(void, glIndexf, jfloat c) {
glIndexf(c);
}