bool JunctionArea::calculateReconstruction()
{
unsigned int i;
if (m_enteringSequences.size() == 0)
return 0;
//Apply preliminary tests for this Junction Area
// a) Check if endpoints got absorbed by the expansion process
for (i = 0; i < m_jointsAbsorbed.size(); ++i)
if (currJSGraph->getNode(m_jointsAbsorbed[i]).degree() == 1)
return 0;
// b) Check if the contours shape resembles that of a crossing
sort(m_enteringSequences.begin(), m_enteringSequences.end(),
EntSequenceLess());
if (!checkShape())
return 0;
// c) Build the new junction Point plane position
if (!solveJunctionPosition())
return 0;
// d) Build joint optimal heights (each for entering sequence...)
if (!makeHeights())
return 0;
return 1;
}
// For building mountain sillohettes in sunset
void makeHeights (int first, int last, int *h)
{
int middle;
int diff;
diff = last - first;
if (diff <= 1)
return;
middle = (first + last) / 2;
h[middle] = (h[first] + h[last]) / 2;
h[middle] += rsRandi (diff / 2) - (diff / 4);
if (h[middle] < 1)
h[middle] = 1;
makeHeights (first, middle, h);
makeHeights (middle, last, h);
}
void initWorld ()
{
int i, j;
float x, y, z;
unsigned int startex;
unsigned int moontex;
unsigned int moonglowtex;
unsigned int sunsettex;
unsigned char *tex;
// Initialize cloud texture object even if clouds are not turned on.
// Sunsets and shockwaves can also use cloud texture.
glGenTextures (1, &cloudtex);
glBindTexture (GL_TEXTURE_2D, cloudtex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
LOAD_TEXTURE (tex, cloudmap, cloudmap_compressedsize, cloudmap_size)
gluBuild2DMipmaps (GL_TEXTURE_2D, 2, CLOUDTEXSIZE, CLOUDTEXSIZE, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, tex);
FREE_TEXTURE (tex)
// initialize star texture
if (dStardensity) {
unsigned char starmap[STARTEXSIZE][STARTEXSIZE][3];
for (i = 0; i < STARTEXSIZE; i++) {
for (j = 0; j < STARTEXSIZE; j++) {
starmap[i][j][0] = starmap[i][j][1] = starmap[i][j][2] = 0;
}
}
int u, v;
unsigned int rgb[3];
for (i = 0; i < (dStardensity * 20); i++) {
u = rsRandi (STARTEXSIZE - 4) + 2;
v = rsRandi (STARTEXSIZE - 4) + 2;
rgb[0] = 220 + rsRandi (36);
rgb[1] = 220 + rsRandi (36);
rgb[2] = 220 + rsRandi (36);
rgb[rsRandi (3)] = 255;
starmap[u][v][0] = rgb[0];
starmap[u][v][1] = rgb[1];
starmap[u][v][2] = rgb[2];
switch (rsRandi (6)) { // different stars
case 0: // small
case 1:
case 2:
starmap[u][v][0] /= 2;
starmap[u][v][1] /= 2;
starmap[u][v][2] /= 2;
starmap[u + 1][v][0] = starmap[u - 1][v][0] = starmap[u][v + 1][0] = starmap[u][v - 1][0] = rgb[0] / (3 + rsRandi (6));
starmap[u + 1][v][1] = starmap[u - 1][v][1] = starmap[u][v + 1][1] = starmap[u][v - 1][1] = rgb[1] / (3 + rsRandi (6));
starmap[u + 1][v][2] = starmap[u - 1][v][2] = starmap[u][v + 1][2] = starmap[u][v - 1][2] = rgb[2] / (3 + rsRandi (6));
break;
case 3: // medium
case 4:
starmap[u + 1][v][0] = starmap[u - 1][v][0] = starmap[u][v + 1][0] = starmap[u][v - 1][0] = rgb[0] / 2;
starmap[u + 1][v][1] = starmap[u - 1][v][1] = starmap[u][v + 1][1] = starmap[u][v - 1][1] = rgb[1] / 2;
starmap[u + 1][v][2] = starmap[u - 1][v][2] = starmap[u][v + 1][2] = starmap[u][v - 1][2] = rgb[2] / 2;
break;
case 5: // large
starmap[u + 1][v][0] = starmap[u - 1][v][0] = starmap[u][v + 1][0] = starmap[u][v - 1][0] = char (float (rgb[0]) * 0.75f);
starmap[u + 1][v][1] = starmap[u - 1][v][1] = starmap[u][v + 1][1] = starmap[u][v - 1][1] = char (float (rgb[1]) * 0.75f);
starmap[u + 1][v][2] = starmap[u - 1][v][2] = starmap[u][v + 1][2] = starmap[u][v - 1][2] = char (float (rgb[2]) * 0.75f);
starmap[u + 1][v + 1][0] = starmap[u + 1][v - 1][0] = starmap[u - 1][v + 1][0] = starmap[u - 1][v - 1][0] = rgb[0] / 4;
starmap[u + 1][v + 1][1] = starmap[u + 1][v - 1][1] = starmap[u - 1][v + 1][1] = starmap[u - 1][v - 1][1] = rgb[1] / 4;
starmap[u + 1][v + 1][2] = starmap[u + 1][v - 1][2] = starmap[u - 1][v + 1][2] = starmap[u - 1][v - 1][2] = rgb[2] / 4;
}
}
glGenTextures (1, &startex);
glBindTexture (GL_TEXTURE_2D, startex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
gluBuild2DMipmaps (GL_TEXTURE_2D, 3, STARTEXSIZE, STARTEXSIZE, GL_RGB, GL_UNSIGNED_BYTE, starmap);
}
//initialize moon texture
if (dMoon) {
unsigned char moonmap[MOONTEXSIZE][MOONTEXSIZE][4];
unsigned char *mtint;
unsigned char *malpha;
LOAD_TEXTURE (mtint, moontint, moontint_compressedsize, moontint_size)
LOAD_TEXTURE (malpha, moonalpha, moonalpha_compressedsize, moonalpha_size)
for (i = 0; i < MOONTEXSIZE; i++) {
for (j = 0; j < MOONTEXSIZE; j++) {
moonmap[i][j][0] = moonmap[i][j][1] = moonmap[i][j][2] = mtint[i * MOONTEXSIZE + j];
moonmap[i][j][3] = malpha[i * MOONTEXSIZE + j];
}
}
FREE_TEXTURE (mtint)
FREE_TEXTURE (malpha)
glGenTextures (1, &moontex);
glBindTexture (GL_TEXTURE_2D, moontex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
gluBuild2DMipmaps (GL_TEXTURE_2D, 4, MOONTEXSIZE, MOONTEXSIZE, GL_RGBA, GL_UNSIGNED_BYTE, moonmap);
}
//initialize moon glow texture
if (dMoonglow) {
unsigned char moonglowmap[MOONGLOWTEXSIZE][MOONGLOWTEXSIZE][4];
float temp1, temp2, temp3, u, v;
for (i = 0; i < MOONGLOWTEXSIZE; i++) {
for (j = 0; j < MOONGLOWTEXSIZE; j++) {
u = float (i - MOONGLOWTEXSIZE / 2) / float (MOONGLOWTEXSIZE / 2);
v = float (j - MOONGLOWTEXSIZE / 2) / float (MOONGLOWTEXSIZE / 2);
temp1 = 4.0f * ((u * u) + (v * v)) * (1.0f - ((u * u) + (v * v)));
if (temp1 > 1.0f)
temp1 = 1.0f;
if (temp1 < 0.0f)
temp1 = 0.0f;
temp1 = temp1 * temp1 * temp1 * temp1;
u *= 1.2f;
v *= 1.2f;
temp2 = 4.0f * ((u * u) + (v * v)) * (1.0f - ((u * u) + (v * v)));
if (temp2 > 1.0f)
temp2 = 1.0f;
if (temp2 < 0.0f)
temp2 = 0.0f;
temp2 = temp2 * temp2 * temp2 * temp2;
u *= 1.25f;
v *= 1.25f;
temp3 = 4.0f * ((u * u) + (v * v)) * (1.0f - ((u * u) + (v * v)));
if (temp3 > 1.0f)
temp3 = 1.0f;
if (temp3 < 0.0f)
temp3 = 0.0f;
temp3 = temp3 * temp3 * temp3 * temp3;
moonglowmap[i][j][0] = char (255.0f * (temp1 * 0.4f + temp2 * 0.4f + temp3 * 0.48f));
moonglowmap[i][j][1] = char (255.0f * (temp1 * 0.4f + temp2 * 0.48f + temp3 * 0.38f));
moonglowmap[i][j][2] = char (255.0f * (temp1 * 0.48f + temp2 * 0.4f + temp3 * 0.38f));
moonglowmap[i][j][3] = char (255.0f * (temp1 * 0.48f + temp2 * 0.48f + temp3 * 0.48f));
}
}
glGenTextures (1, &moonglowtex);
glBindTexture (GL_TEXTURE_2D, moonglowtex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
gluBuild2DMipmaps (GL_TEXTURE_2D, 4, MOONGLOWTEXSIZE, MOONGLOWTEXSIZE, GL_RGBA, GL_UNSIGNED_BYTE, moonglowmap);
}
// do a sunset?
doSunset = 1;
if (!rsRandi (4))
doSunset = 0;
// initialize sunset texture
if (doSunset) {
unsigned char *sunsetmap;
unsigned char rgb[3];
float temp;
sunsetmap = (unsigned char *)malloc (CLOUDTEXSIZE * CLOUDTEXSIZE * 3);
if (rsRandi (3))
rgb[0] = 60 + rsRandi (42);
else
rgb[0] = rsRandi (102);
rgb[1] = rsRandi (rgb[0]);
rgb[2] = 0;
if (rgb[1] < 50)
rgb[2] = 100 - rsRandi (rgb[0]);
for (j = 0; j < CLOUDTEXSIZE; j++) {
for (i = 0; i < CLOUDTEXSIZE; i++) {
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 0] = rgb[0];
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 1] = rgb[1];
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 2] = rgb[2];
}
}
// clouds in sunset
if (rsRandi (3)) {
float cloudinf; // influence of clouds
int xoffset = rsRandi (CLOUDTEXSIZE);
int yoffset = rsRandi (CLOUDTEXSIZE);
int x, y;
for (i = 0; i < CLOUDTEXSIZE; i++) {
for (j = 0; j < CLOUDTEXSIZE; j++) {
x = (i + xoffset) % CLOUDTEXSIZE;
y = (j + yoffset) % CLOUDTEXSIZE;
cloudinf = float (cloudmap[x * CLOUDTEXSIZE * 2 + y * 2 + 1]) / 256.0f;
temp = float (sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 0]) / 256.0f;
temp *= cloudinf;
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 0] = char (temp * 256.0f);
cloudinf *= float (cloudmap[x * CLOUDTEXSIZE * 2 + y * 2]) / 256.0f;
temp = float (sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 1]) / 256.0f;
temp *= cloudinf;
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 1] = char (temp * 256.0f);
}
}
}
// Fractal mountain generation
int mountains[CLOUDTEXSIZE + 1];
mountains[0] = mountains[CLOUDTEXSIZE] = rsRandi (10) + 5;
makeHeights (0, CLOUDTEXSIZE, mountains);
for (i = 0; i < CLOUDTEXSIZE; i++) {
for (j = 0; j <= mountains[i]; j++) {
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 0] = 0;
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 1] = 0;
sunsetmap[i * CLOUDTEXSIZE * 3 + j * 3 + 2] = 0;
}
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 1) * 3 + 0] /= 4;
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 1) * 3 + 1] /= 4;
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 1) * 3 + 2] /= 4;
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 2) * 3 + 0] /= 2;
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 2) * 3 + 1] /= 2;
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 2) * 3 + 2] /= 2;
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 3) * 3 + 0] = char (float (sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 3) * 3 + 0]) * 0.75f);
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 3) * 3 + 1] = char (float (sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 3) * 3 + 1]) * 0.75f);
sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 3) * 3 + 2] = char (float (sunsetmap[i * CLOUDTEXSIZE * 3 + (mountains[i] + 3) * 3 + 2]) * 0.75f);
}
// build texture object
glGenTextures (1, &sunsettex);
glBindTexture (GL_TEXTURE_2D, sunsettex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
gluBuild2DMipmaps (GL_TEXTURE_2D, 3, CLOUDTEXSIZE, CLOUDTEXSIZE, GL_RGB, GL_UNSIGNED_BYTE, sunsetmap);
free (sunsetmap);
}
//initialize earth texture
if (dEarth) {
glGenTextures (1, &earthneartex);
glBindTexture (GL_TEXTURE_2D, earthneartex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
LOAD_TEXTURE (tex, earthnearmap, earthnearmap_compressedsize, earthnearmap_size)
gluBuild2DMipmaps (GL_TEXTURE_2D, 3, EARTHNEARSIZE, EARTHNEARSIZE, GL_RGB, GL_UNSIGNED_BYTE, tex);
FREE_TEXTURE (tex)
glGenTextures (1, &earthfartex);
glBindTexture (GL_TEXTURE_2D, earthfartex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
LOAD_TEXTURE (tex, earthfarmap, earthfarmap_compressedsize, earthfarmap_size)
gluBuild2DMipmaps (GL_TEXTURE_2D, 3, EARTHFARSIZE, EARTHFARSIZE, GL_RGB, GL_UNSIGNED_BYTE, tex);
FREE_TEXTURE (tex)
glGenTextures (1, &earthlighttex);
glBindTexture (GL_TEXTURE_2D, earthlighttex);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
LOAD_TEXTURE (tex, earthlightmap, earthlightmap_compressedsize, earthlightmap_size)
gluBuild2DMipmaps (GL_TEXTURE_2D, 3, EARTHFARSIZE, EARTHFARSIZE, GL_RGB, GL_UNSIGNED_BYTE, tex);
FREE_TEXTURE (tex)
}
// initialize star geometry
if (dStardensity) {
float stars[STARMESH + 1][STARMESH / 2][6]; // 6 = x,y,z,u,v,bright
for (j = 0; j < STARMESH / 2; j++) {
y = sin (RS_PIo2 * float (j) / float (STARMESH / 2));
for (i = 0; i <= STARMESH; i++) {
x = cos (RS_PIx2 * float (i) / float (STARMESH)) * cos (RS_PIo2 * float (j) / float (STARMESH / 2));
z = sin (RS_PIx2 * float (i) / float (STARMESH)) * cos (RS_PIo2 * float (j) / float (STARMESH / 2));
// positions
stars[i][j][0] = x * 20000.0f;
stars[i][j][1] = 1500.0f + 18500.0f * y;
stars[i][j][2] = z * 20000.0f;
// tex coords
stars[i][j][3] = 1.2f * x * (2.5f - y);
stars[i][j][4] = 1.2f * z * (2.5f - y);
// brightness
if (stars[i][j][1] < 1501.0f)
stars[i][j][5] = 0.0f;
else
stars[i][j][5] = 1.0f;
}
}
starlist = glGenLists (1);
glNewList (starlist, GL_COMPILE);
glBindTexture (GL_TEXTURE_2D, startex);
for (j = 0; j < (STARMESH / 2 - 1); j++) {
glBegin (GL_TRIANGLE_STRIP);
for (i = 0; i <= STARMESH; i++) {
glColor3f (stars[i][j + 1][5], stars[i][j + 1][5], stars[i][j + 1][5]);
glTexCoord2f (stars[i][j + 1][3], stars[i][j + 1][4]);
glVertex3fv (stars[i][j + 1]);
glColor3f (stars[i][j][5], stars[i][j][5], stars[i][j][5]);
glTexCoord2f (stars[i][j][3], stars[i][j][4]);
glVertex3fv (stars[i][j]);
}
glEnd ();
}
j = STARMESH / 2 - 1;
glBegin (GL_TRIANGLE_FAN);
glColor3f (1.0f, 1.0f, 1.0f);
glTexCoord2f (0.0f, 0.0f);
glVertex3f (0.0f, 20000.0f, 0.0f);
for (i = 0; i <= STARMESH; i++) {
glColor3f (stars[i][j][5], stars[i][j][5], stars[i][j][5]);
glTexCoord2f (stars[i][j][3], stars[i][j][4]);
glVertex3fv (stars[i][j]);
}
glEnd ();
glEndList ();
}
// initialize moon geometry
if (dMoon) {
moonlist = glGenLists (1);
glNewList (moonlist, GL_COMPILE);
glColor4f (1.0f, 1.0f, 1.0f, 1.0f);
glBindTexture (GL_TEXTURE_2D, moontex);
glBegin (GL_TRIANGLE_STRIP);
glTexCoord2f (0.0f, 0.0f);
glVertex3f (-800.0f, -800.0f, 0.0f);
glTexCoord2f (1.0f, 0.0f);
glVertex3f (800.0f, -800.0f, 0.0f);
glTexCoord2f (0.0f, 1.0f);
glVertex3f (-800.0f, 800.0f, 0.0f);
glTexCoord2f (1.0f, 1.0f);
glVertex3f (800.0f, 800.0f, 0.0f);
glEnd ();
glEndList ();
}
// initialize moon glow geometry
if (dMoonglow) {
moonglowlist = glGenLists (1);
glNewList (moonglowlist, GL_COMPILE);
glBindTexture (GL_TEXTURE_2D, moonglowtex);
glBegin (GL_TRIANGLE_STRIP);
glTexCoord2f (0.0f, 0.0f);
glVertex3f (-7000.0f, -7000.0f, 0.0f);
glTexCoord2f (1.0f, 0.0f);
glVertex3f (7000.0f, -7000.0f, 0.0f);
glTexCoord2f (0.0f, 1.0f);
glVertex3f (-7000.0f, 7000.0f, 0.0f);
glTexCoord2f (1.0f, 1.0f);
glVertex3f (7000.0f, 7000.0f, 0.0f);
glEnd ();
glEndList ();
}
// initialize cloud geometry
if (dClouds) {
for (j = 0; j <= CLOUDMESH; j++) {
for (i = 0; i <= CLOUDMESH; i++) {
x = float (i - (CLOUDMESH / 2));
z = float (j - (CLOUDMESH / 2));
clouds[i][j][0] = x * (40000.0f / float (CLOUDMESH));
clouds[i][j][2] = z * (40000.0f / float (CLOUDMESH));
x = float (fabs (x / float (CLOUDMESH / 2)));
z = float (fabs (z / float (CLOUDMESH / 2)));
clouds[i][j][1] = 2000.0f - 1000.0f * float (x * x + z * z);
clouds[i][j][3] = float (-i) / float (CLOUDMESH / 6); // tex coords
clouds[i][j][4] = float (-j) / float (CLOUDMESH / 6);
clouds[i][j][5] = (clouds[i][j][1] - 1000.0f) * 0.00001f * float (dAmbient); // brightness
if (clouds[i][j][5] < 0.0f)
clouds[i][j][5] = 0.0f;
}
}
}
// initialize sunset geometry
if (doSunset) {
sunsetlist = glGenLists (1);
float vert[6] = { 0.0f, 7654.0f, 8000.0f, 14142.0f, 18448.0f, 20000.0f };
glNewList (sunsetlist, GL_COMPILE);
glBindTexture (GL_TEXTURE_2D, sunsettex);
glBegin (GL_TRIANGLE_STRIP);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.0f);
glVertex3f (vert[0], vert[2], vert[5]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (0.0f, 0.0f);
glVertex3f (vert[0], vert[0], vert[5]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.125f);
glVertex3f (-vert[1], vert[2], vert[4]);
glColor3f (0.25f, 0.25f, 0.25f);
glTexCoord2f (0.0f, 0.125f);
glVertex3f (-vert[1], vert[0], vert[4]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.25f);
glVertex3f (-vert[3], vert[2], vert[3]);
glColor3f (0.5f, 0.5f, 0.5f);
glTexCoord2f (0.0f, 0.25f);
glVertex3f (-vert[3], vert[0], vert[3]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.375f);
glVertex3f (-vert[4], vert[2], vert[1]);
glColor3f (0.75f, 0.75f, 0.75f);
glTexCoord2f (0.0f, 0.375f);
glVertex3f (-vert[4], vert[0], vert[1]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.5f);
glVertex3f (-vert[5], vert[2], vert[0]);
glColor3f (1.0f, 1.0f, 1.0f);
glTexCoord2f (0.0f, 0.5f);
glVertex3f (-vert[5], vert[0], vert[0]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.625f);
glVertex3f (-vert[4], vert[2], -vert[1]);
glColor3f (0.75f, 0.75f, 0.75f);
glTexCoord2f (0.0f, 0.625f);
glVertex3f (-vert[4], vert[0], -vert[1]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.75f);
glVertex3f (-vert[3], vert[2], -vert[3]);
glColor3f (0.5f, 0.5f, 0.5f);
glTexCoord2f (0.0f, 0.75f);
glVertex3f (-vert[3], vert[0], -vert[3]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 0.875f);
glVertex3f (-vert[1], vert[2], -vert[4]);
glColor3f (0.25f, 0.25f, 0.25f);
glTexCoord2f (0.0f, 0.875f);
glVertex3f (-vert[1], vert[0], -vert[4]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (1.0f, 1.0f);
glVertex3f (vert[0], vert[2], -vert[5]);
glColor3f (0.0f, 0.0f, 0.0f);
glTexCoord2f (0.0f, 1.0f);
glVertex3f (vert[0], vert[0], -vert[5]);
glEnd ();
glEndList ();
}
// initialize earth geometry
if (dEarth) {
earthlist = glGenLists (1);
earthnearlist = glGenLists (1);
earthfarlist = glGenLists (1);
float lit[] = { float (dAmbient) * 0.01f, float (dAmbient) * 0.01f, float (dAmbient) * 0.01f };
float unlit[] = { 0.0f, 0.0f, 0.0f };
float vert[2] = { 839.68f, 8396.8f };
float tex[4] = { 0.0f, 0.45f, 0.55f, 1.0f };
glNewList (earthnearlist, GL_COMPILE);
glColor3fv (lit);
glBegin (GL_TRIANGLE_STRIP);
glTexCoord2f (tex[0], tex[0]);
glVertex3f (-vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[0], tex[3]);
glVertex3f (-vert[0], 0.0f, vert[0]);
glTexCoord2f (tex[3], tex[0]);
glVertex3f (vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[3], tex[3]);
glVertex3f (vert[0], 0.0f, vert[0]);
glEnd ();
glEndList ();
glNewList (earthfarlist, GL_COMPILE);
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[1], tex[1]);
glVertex3f (-vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[2], tex[1]);
glVertex3f (vert[0], 0.0f, -vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[0], tex[0]);
glVertex3f (-vert[1], 0.0f, -vert[1]);
glTexCoord2f (tex[3], tex[0]);
glVertex3f (vert[1], 0.0f, -vert[1]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[1], tex[2]);
glVertex3f (-vert[0], 0.0f, vert[0]);
glTexCoord2f (tex[1], tex[1]);
glVertex3f (-vert[0], 0.0f, -vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[0], tex[3]);
glVertex3f (-vert[1], 0.0f, vert[1]);
glTexCoord2f (tex[0], tex[0]);
glVertex3f (-vert[1], 0.0f, -vert[1]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[2], tex[2]);
glVertex3f (vert[0], 0.0f, vert[0]);
glTexCoord2f (tex[1], tex[2]);
glVertex3f (-vert[0], 0.0f, vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[3], tex[3]);
glVertex3f (vert[1], 0.0f, vert[1]);
glTexCoord2f (tex[0], tex[3]);
glVertex3f (-vert[1], 0.0f, vert[1]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[2], tex[1]);
glVertex3f (vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[2], tex[2]);
glVertex3f (vert[0], 0.0f, vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[3], tex[0]);
glVertex3f (vert[1], 0.0f, -vert[1]);
glTexCoord2f (tex[3], tex[3]);
glVertex3f (vert[1], 0.0f, vert[1]);
glEnd ();
glEndList ();
glNewList (earthlist, GL_COMPILE);
lit[0] = lit[1] = lit[2] = 0.4f;
glColor3fv (lit);
glBegin (GL_TRIANGLE_STRIP);
glTexCoord2f (tex[1], tex[1]);
glVertex3f (-vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[1], tex[2]);
glVertex3f (-vert[0], 0.0f, vert[0]);
glTexCoord2f (tex[2], tex[1]);
glVertex3f (vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[2], tex[2]);
glVertex3f (vert[0], 0.0f, vert[0]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[1], tex[1]);
glVertex3f (-vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[2], tex[1]);
glVertex3f (vert[0], 0.0f, -vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[0], tex[0]);
glVertex3f (-vert[1], 0.0f, -vert[1]);
glTexCoord2f (tex[3], tex[0]);
glVertex3f (vert[1], 0.0f, -vert[1]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[1], tex[2]);
glVertex3f (-vert[0], 0.0f, vert[0]);
glTexCoord2f (tex[1], tex[1]);
glVertex3f (-vert[0], 0.0f, -vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[0], tex[3]);
glVertex3f (-vert[1], 0.0f, vert[1]);
glTexCoord2f (tex[0], tex[0]);
glVertex3f (-vert[1], 0.0f, -vert[1]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[2], tex[2]);
glVertex3f (vert[0], 0.0f, vert[0]);
glTexCoord2f (tex[1], tex[2]);
glVertex3f (-vert[0], 0.0f, vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[3], tex[3]);
glVertex3f (vert[1], 0.0f, vert[1]);
glTexCoord2f (tex[0], tex[3]);
glVertex3f (-vert[1], 0.0f, vert[1]);
glEnd ();
glBegin (GL_TRIANGLE_STRIP);
glColor3fv (lit);
glTexCoord2f (tex[2], tex[1]);
glVertex3f (vert[0], 0.0f, -vert[0]);
glTexCoord2f (tex[2], tex[2]);
glVertex3f (vert[0], 0.0f, vert[0]);
glColor3fv (unlit);
glTexCoord2f (tex[3], tex[0]);
glVertex3f (vert[1], 0.0f, -vert[1]);
glTexCoord2f (tex[3], tex[3]);
glVertex3f (vert[1], 0.0f, vert[1]);
glEnd ();
glEndList ();
}
}