diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.1/progs/demos/ray.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.1/progs/demos/ray.c | 902 |
1 files changed, 0 insertions, 902 deletions
diff --git a/nx-X11/extras/Mesa_6.4.1/progs/demos/ray.c b/nx-X11/extras/Mesa_6.4.1/progs/demos/ray.c deleted file mode 100644 index eb1d19f86..000000000 --- a/nx-X11/extras/Mesa_6.4.1/progs/demos/ray.c +++ /dev/null @@ -1,902 +0,0 @@ -/* - * This program is under the GNU GPL. - * Use at your own risk. - * - * written by David Bucciarelli (tech.hmw@plus.it) - * Humanware s.r.l. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <math.h> - -#ifdef WIN32 -#include <windows.h> -#endif - -#include <GL/glut.h> - -#ifdef XMESA -#include "GL/xmesa.h" -static int fullscreen = 1; -#endif - -static int WIDTH = 640; -static int HEIGHT = 480; - -static GLint T0 = 0; -static GLint Frames = 0; - -#define BASESIZE 7.5f -#define SPHERE_RADIUS 0.75f - -#define TEX_CHECK_WIDTH 256 -#define TEX_CHECK_HEIGHT 256 -#define TEX_CHECK_SLOT_SIZE (TEX_CHECK_HEIGHT/16) -#define TEX_CHECK_NUMSLOT (TEX_CHECK_HEIGHT/TEX_CHECK_SLOT_SIZE) - -#define TEX_REFLECT_WIDTH 256 -#define TEX_REFLECT_HEIGHT 256 -#define TEX_REFLECT_SLOT_SIZE (TEX_REFLECT_HEIGHT/16) -#define TEX_REFLECT_NUMSLOT (TEX_REFLECT_HEIGHT/TEX_REFLECT_SLOT_SIZE) - -#ifndef M_PI -#define M_PI 3.1415926535 -#endif - -#define EPSILON 0.0001 - -#define clamp255(a) ( (a)<(0.0f) ? (0.0f) : ((a)>(255.0f) ? (255.0f) : (a)) ) - -#define fabs(x) ((x)<0.0f?-(x):(x)) - -#define vequ(a,b) { (a)[0]=(b)[0]; (a)[1]=(b)[1]; (a)[2]=(b)[2]; } -#define vsub(a,b,c) { (a)[0]=(b)[0]-(c)[0]; (a)[1]=(b)[1]-(c)[1]; (a)[2]=(b)[2]-(c)[2]; } -#define dprod(a,b) ((a)[0]*(b)[0]+(a)[1]*(b)[1]+(a)[2]*(b)[2]) -#define vnormalize(a,b) { \ - register float m_norm; \ - m_norm=sqrt((double)dprod((a),(a))); \ - (a)[0] /=m_norm; \ - (a)[1] /=m_norm; \ - (a)[2] /=m_norm; } - -static GLubyte checkmap[TEX_CHECK_HEIGHT][TEX_CHECK_WIDTH][3]; -static GLuint checkid; -static int checkmap_currentslot = 0; - -static GLubyte reflectmap[TEX_REFLECT_HEIGHT][TEX_REFLECT_WIDTH][3]; -static GLuint reflectid; -static int reflectmap_currentslot = 0; - -static GLuint lightdlist; -static GLuint objdlist; - -static float lightpos[3] = { 2.1, 2.1, 2.8 }; -static float objpos[3] = { 0.0, 0.0, 1.0 }; - -static float sphere_pos[TEX_CHECK_HEIGHT][TEX_REFLECT_WIDTH][3]; - -static int win = 0; - -static float fogcolor[4] = { 0.05, 0.05, 0.05, 1.0 }; - -static float obs[3] = { 7.0, 0.0, 2.0 }; -static float dir[3]; -static float v = 0.0; -static float alpha = -90.0; -static float beta = 90.0; - -static int fog = 1; -static int bfcull = 1; -static int poutline = 0; -static int help = 1; -static int showcheckmap = 1; -static int showreflectmap = 1; -static int joyavailable = 0; -static int joyactive = 0; - -static void -calcposobs(void) -{ - dir[0] = sin(alpha * M_PI / 180.0); - dir[1] = cos(alpha * M_PI / 180.0) * sin(beta * M_PI / 180.0); - dir[2] = cos(beta * M_PI / 180.0); - - if (dir[0] < 1.0e-5 && dir[0] > -1.0e-5) - dir[0] = 0; - if (dir[1] < 1.0e-5 && dir[1] > -1.0e-5) - dir[1] = 0; - if (dir[2] < 1.0e-5 && dir[2] > -1.0e-5) - dir[2] = 0; - - obs[0] += v * dir[0]; - obs[1] += v * dir[1]; - obs[2] += v * dir[2]; -} - -static void -special(int k, int x, int y) -{ - switch (k) { - case GLUT_KEY_LEFT: - alpha -= 2.0; - break; - case GLUT_KEY_RIGHT: - alpha += 2.0; - break; - case GLUT_KEY_DOWN: - beta -= 2.0; - break; - case GLUT_KEY_UP: - beta += 2.0; - break; - } -} - -static void -key(unsigned char k, int x, int y) -{ - switch (k) { - case 27: - exit(0); - break; - - case 's': - lightpos[1] -= 0.1; - break; - case 'd': - lightpos[1] += 0.1; - break; - case 'e': - lightpos[0] -= 0.1; - break; - case 'x': - lightpos[0] += 0.1; - break; - case 'w': - lightpos[2] -= 0.1; - break; - case 'r': - lightpos[2] += 0.1; - break; - - case 'j': - objpos[1] -= 0.1; - break; - case 'k': - objpos[1] += 0.1; - break; - case 'i': - objpos[0] -= 0.1; - break; - case 'm': - objpos[0] += 0.1; - break; - case 'u': - objpos[2] -= 0.1; - break; - case 'o': - objpos[2] += 0.1; - break; - - case 'a': - v += 0.005; - break; - case 'z': - v -= 0.005; - break; - - case 'g': - joyactive = (!joyactive); - break; - case 'h': - help = (!help); - break; - case 'f': - fog = (!fog); - break; - - case '1': - showcheckmap = (!showcheckmap); - break; - case '2': - showreflectmap = (!showreflectmap); - break; - - case 'b': - if (bfcull) { - glDisable(GL_CULL_FACE); - bfcull = 0; - } - else { - glEnable(GL_CULL_FACE); - bfcull = 1; - } - break; - case 'p': - if (poutline) { - glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); - poutline = 0; - } - else { - glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); - poutline = 1; - } - break; -#ifdef XMESA - case ' ': - XMesaSetFXmode(fullscreen ? XMESA_FX_FULLSCREEN : XMESA_FX_WINDOW); - fullscreen = (!fullscreen); - break; -#endif - } -} - -static void -reshape(int w, int h) -{ - WIDTH = w; - HEIGHT = h; - glViewport(0, 0, w, h); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPerspective(45.0, w / (float) h, 0.8, 40.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); -} - -static void -printstring(void *font, char *string) -{ - int len, i; - - len = (int) strlen(string); - for (i = 0; i < len; i++) - glutBitmapCharacter(font, string[i]); -} - -static void -printhelp(void) -{ - glEnable(GL_BLEND); - glColor4f(0.5, 0.5, 0.5, 0.5); - glRecti(40, 40, 600, 440); - glDisable(GL_BLEND); - - glColor3f(0.0, 0.0, 1.0); - glRasterPos2i(300, 420); - printstring(GLUT_BITMAP_HELVETICA_18, "Help"); - - glRasterPos2i(60, 390); - printstring(GLUT_BITMAP_HELVETICA_12, "h - Toggle Help"); - glRasterPos2i(60, 370); - printstring(GLUT_BITMAP_HELVETICA_12, "f - Toggle Fog"); - glRasterPos2i(60, 350); - printstring(GLUT_BITMAP_HELVETICA_12, "b - Toggle Back face culling"); - glRasterPos2i(60, 330); - printstring(GLUT_BITMAP_HELVETICA_12, "p - Toggle Wire frame"); - glRasterPos2i(60, 310); - printstring(GLUT_BITMAP_HELVETICA_12, "Arrow Keys - Rotate"); - glRasterPos2i(60, 290); - printstring(GLUT_BITMAP_HELVETICA_12, "a - Increase velocity"); - glRasterPos2i(60, 270); - printstring(GLUT_BITMAP_HELVETICA_12, "z - Decrease velocity"); - - glRasterPos2i(60, 250); - if (joyavailable) - printstring(GLUT_BITMAP_HELVETICA_12, - "j - Toggle jostick control (Joystick control available)"); - else - printstring(GLUT_BITMAP_HELVETICA_12, - "(No Joystick control available)"); - - glRasterPos2i(60, 230); - printstring(GLUT_BITMAP_HELVETICA_12, - "To move the light source: s - left, d - right, e - far, x - near, w - down r - up"); - glRasterPos2i(60, 210); - printstring(GLUT_BITMAP_HELVETICA_12, - "To move the mirror sphere: j - left, k - right, i - far, m - near, u - down o - up"); - - glRasterPos2i(60, 190); - printstring(GLUT_BITMAP_HELVETICA_12, - "1 - Toggle the plane texture map window"); - - glRasterPos2i(60, 170); - printstring(GLUT_BITMAP_HELVETICA_12, - "2 - Toggle the sphere texture map window"); -} - -static GLboolean -seelight(float p[3], float dir[3]) -{ - float c[3], b, a, d, t, dist[3]; - - vsub(c, p, objpos); - b = -dprod(c, dir); - a = dprod(c, c) - SPHERE_RADIUS * SPHERE_RADIUS; - - if ((d = b * b - a) < 0.0 || (b < 0.0 && a > 0.0)) - return GL_FALSE; - - d = sqrt(d); - - t = b - d; - - if (t < EPSILON) { - t = b + d; - if (t < EPSILON) - return GL_FALSE; - } - - vsub(dist, lightpos, p); - if (dprod(dist, dist) < t * t) - return GL_FALSE; - - return GL_TRUE; -} - -static int -colorcheckmap(float ppos[3], float c[3]) -{ - static float norm[3] = { 0.0f, 0.0f, 1.0f }; - float ldir[3], vdir[3], h[3], dfact, kfact, r, g, b; - int x, y; - - x = (int) ((ppos[0] + BASESIZE / 2) * (10.0f / BASESIZE)); - if ((x < 0) || (x > 10)) - return GL_FALSE; - - y = (int) ((ppos[1] + BASESIZE / 2) * (10.0f / BASESIZE)); - if ((y < 0) || (y > 10)) - return GL_FALSE; - - r = 255.0f; - if (y & 1) { - if (x & 1) - g = 255.0f; - else - g = 0.0f; - } - else { - if (x & 1) - g = 0.0f; - else - g = 255.0f; - } - b = 0.0f; - - vsub(ldir, lightpos, ppos); - vnormalize(ldir, ldir); - - if (seelight(ppos, ldir)) { - c[0] = r * 0.05f; - c[1] = g * 0.05f; - c[2] = b * 0.05f; - - return GL_TRUE; - } - - dfact = dprod(ldir, norm); - if (dfact < 0.0f) - dfact = 0.0f; - - vsub(vdir, obs, ppos); - vnormalize(vdir, vdir); - h[0] = 0.5f * (vdir[0] + ldir[0]); - h[1] = 0.5f * (vdir[1] + ldir[1]); - h[2] = 0.5f * (vdir[2] + ldir[2]); - kfact = dprod(h, norm); - kfact = pow(kfact, 6.0) * 7.0 * 255.0; - - r = r * dfact + kfact; - g = g * dfact + kfact; - b = b * dfact + kfact; - - c[0] = clamp255(r); - c[1] = clamp255(g); - c[2] = clamp255(b); - - return GL_TRUE; -} - -static void -updatecheckmap(int slot) -{ - float c[3], ppos[3]; - int x, y; - - glBindTexture(GL_TEXTURE_2D, checkid); - - ppos[2] = 0.0f; - for (y = slot * TEX_CHECK_SLOT_SIZE; y < (slot + 1) * TEX_CHECK_SLOT_SIZE; - y++) { - ppos[1] = (y / (float) TEX_CHECK_HEIGHT) * BASESIZE - BASESIZE / 2; - - for (x = 0; x < TEX_CHECK_WIDTH; x++) { - ppos[0] = (x / (float) TEX_CHECK_WIDTH) * BASESIZE - BASESIZE / 2; - - colorcheckmap(ppos, c); - checkmap[y][x][0] = (GLubyte) c[0]; - checkmap[y][x][1] = (GLubyte) c[1]; - checkmap[y][x][2] = (GLubyte) c[2]; - } - } - - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, slot * TEX_CHECK_SLOT_SIZE, - TEX_CHECK_WIDTH, TEX_CHECK_SLOT_SIZE, GL_RGB, - GL_UNSIGNED_BYTE, - &checkmap[slot * TEX_CHECK_SLOT_SIZE][0][0]); - -} - -static void -updatereflectmap(int slot) -{ - float rf, r, g, b, t, dfact, kfact, rdir[3]; - float rcol[3], ppos[3], norm[3], ldir[3], h[3], vdir[3], planepos[3]; - int x, y; - - glBindTexture(GL_TEXTURE_2D, reflectid); - - for (y = slot * TEX_REFLECT_SLOT_SIZE; - y < (slot + 1) * TEX_REFLECT_SLOT_SIZE; y++) - for (x = 0; x < TEX_REFLECT_WIDTH; x++) { - ppos[0] = sphere_pos[y][x][0] + objpos[0]; - ppos[1] = sphere_pos[y][x][1] + objpos[1]; - ppos[2] = sphere_pos[y][x][2] + objpos[2]; - - vsub(norm, ppos, objpos); - vnormalize(norm, norm); - - vsub(ldir, lightpos, ppos); - vnormalize(ldir, ldir); - vsub(vdir, obs, ppos); - vnormalize(vdir, vdir); - - rf = 2.0f * dprod(norm, vdir); - if (rf > EPSILON) { - rdir[0] = rf * norm[0] - vdir[0]; - rdir[1] = rf * norm[1] - vdir[1]; - rdir[2] = rf * norm[2] - vdir[2]; - - t = -objpos[2] / rdir[2]; - - if (t > EPSILON) { - planepos[0] = objpos[0] + t * rdir[0]; - planepos[1] = objpos[1] + t * rdir[1]; - planepos[2] = 0.0f; - - if (!colorcheckmap(planepos, rcol)) - rcol[0] = rcol[1] = rcol[2] = 0.0f; - } - else - rcol[0] = rcol[1] = rcol[2] = 0.0f; - } - else - rcol[0] = rcol[1] = rcol[2] = 0.0f; - - dfact = 0.1f * dprod(ldir, norm); - - if (dfact < 0.0f) { - dfact = 0.0f; - kfact = 0.0f; - } - else { - h[0] = 0.5f * (vdir[0] + ldir[0]); - h[1] = 0.5f * (vdir[1] + ldir[1]); - h[2] = 0.5f * (vdir[2] + ldir[2]); - kfact = dprod(h, norm); - kfact = pow(kfact, 4.0); - if (kfact < 1.0e-10) - kfact = 0.0; - } - - r = dfact + kfact; - g = dfact + kfact; - b = dfact + kfact; - - r *= 255.0f; - g *= 255.0f; - b *= 255.0f; - - r += rcol[0]; - g += rcol[1]; - b += rcol[2]; - - r = clamp255(r); - g = clamp255(g); - b = clamp255(b); - - reflectmap[y][x][0] = (GLubyte) r; - reflectmap[y][x][1] = (GLubyte) g; - reflectmap[y][x][2] = (GLubyte) b; - } - - glTexSubImage2D(GL_TEXTURE_2D, 0, 0, slot * TEX_REFLECT_SLOT_SIZE, - TEX_REFLECT_WIDTH, TEX_REFLECT_SLOT_SIZE, GL_RGB, - GL_UNSIGNED_BYTE, - &reflectmap[slot * TEX_REFLECT_SLOT_SIZE][0][0]); -} - -static void -drawbase(void) -{ - glColor3f(0.0, 0.0, 0.0); - glBindTexture(GL_TEXTURE_2D, checkid); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - - glBegin(GL_QUADS); - glTexCoord2f(0.0f, 0.0f); - glVertex3f(-BASESIZE / 2.0f, -BASESIZE / 2.0f, 0.0f); - - glTexCoord2f(1.0f, 0.0f); - glVertex3f(BASESIZE / 2.0f, -BASESIZE / 2.0f, 0.0f); - - glTexCoord2f(1.0f, 1.0f); - glVertex3f(BASESIZE / 2.0f, BASESIZE / 2.0f, 0.0f); - - glTexCoord2f(0.0f, 1.0f); - glVertex3f(-BASESIZE / 2.0f, BASESIZE / 2.0f, 0.0f); - - glEnd(); -} - -static void -drawobj(void) -{ - glColor3f(0.0, 0.0, 0.0); - glBindTexture(GL_TEXTURE_2D, reflectid); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - - glPushMatrix(); - glTranslatef(objpos[0], objpos[1], objpos[2]); - glCallList(objdlist); - glPopMatrix(); -} - -static void -dojoy(void) -{ -#ifdef WIN32 - static UINT max[2] = { 0, 0 }; - static UINT min[2] = { 0xffffffff, 0xffffffff }, center[2]; - MMRESULT res; - JOYINFO joy; - - res = joyGetPos(JOYSTICKID1, &joy); - - if (res == JOYERR_NOERROR) { - joyavailable = 1; - - if (max[0] < joy.wXpos) - max[0] = joy.wXpos; - if (min[0] > joy.wXpos) - min[0] = joy.wXpos; - center[0] = (max[0] + min[0]) / 2; - - if (max[1] < joy.wYpos) - max[1] = joy.wYpos; - if (min[1] > joy.wYpos) - min[1] = joy.wYpos; - center[1] = (max[1] + min[1]) / 2; - - if (joyactive) { - if (fabs(center[0] - (float) joy.wXpos) > 0.1 * (max[0] - min[0])) - alpha -= - 2.5 * (center[0] - (float) joy.wXpos) / (max[0] - min[0]); - if (fabs(center[1] - (float) joy.wYpos) > 0.1 * (max[1] - min[1])) - beta += 2.5 * (center[1] - (float) joy.wYpos) / (max[1] - min[1]); - - if (joy.wButtons & JOY_BUTTON1) - v += 0.005; - if (joy.wButtons & JOY_BUTTON2) - v -= 0.005; - } - } - else - joyavailable = 0; -#endif -} - -static void -updatemaps(void) -{ - updatecheckmap(checkmap_currentslot); - checkmap_currentslot = (checkmap_currentslot + 1) % TEX_CHECK_NUMSLOT; - - updatereflectmap(reflectmap_currentslot); - reflectmap_currentslot = - (reflectmap_currentslot + 1) % TEX_REFLECT_NUMSLOT; -} - -static void -draw(void) -{ - static char frbuf[80] = ""; - - dojoy(); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glEnable(GL_TEXTURE_2D); - glEnable(GL_DEPTH_TEST); - if (fog) - glEnable(GL_FOG); - else - glDisable(GL_FOG); - - glPushMatrix(); - calcposobs(); - - gluLookAt(obs[0], obs[1], obs[2], - obs[0] + dir[0], obs[1] + dir[1], obs[2] + dir[2], - 0.0, 0.0, 1.0); - - drawbase(); - drawobj(); - - glColor3f(1.0, 1.0, 1.0); - glDisable(GL_TEXTURE_2D); - - glPushMatrix(); - glTranslatef(lightpos[0], lightpos[1], lightpos[2]); - glCallList(lightdlist); - glPopMatrix(); - - glPopMatrix(); - - glDisable(GL_DEPTH_TEST); - glDisable(GL_FOG); - - glMatrixMode(GL_PROJECTION); - glPushMatrix(); - glLoadIdentity(); - glOrtho(-0.5, 639.5, -0.5, 479.5, -1.0, 1.0); - glMatrixMode(GL_MODELVIEW); - - glColor3f(0.0f, 0.3f, 1.0f); - - if (showcheckmap) { - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, checkid); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - - glBegin(GL_QUADS); - glTexCoord2f(1.0f, 0.0f); - glVertex2i(10, 30); - glTexCoord2f(1.0f, 1.0f); - glVertex2i(10 + 90, 30); - glTexCoord2f(0.0f, 1.0f); - glVertex2i(10 + 90, 30 + 90); - glTexCoord2f(0.0f, 0.0f); - glVertex2i(10, 30 + 90); - glEnd(); - - glDisable(GL_TEXTURE_2D); - glBegin(GL_LINE_LOOP); - glVertex2i(10, 30); - glVertex2i(10 + 90, 30); - glVertex2i(10 + 90, 30 + 90); - glVertex2i(10, 30 + 90); - glEnd(); - glRasterPos2i(105, 65); - printstring(GLUT_BITMAP_HELVETICA_18, "Plane Texture Map"); - } - - if (showreflectmap) { - glEnable(GL_TEXTURE_2D); - glBindTexture(GL_TEXTURE_2D, reflectid); - glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); - - glBegin(GL_QUADS); - glTexCoord2f(1.0f, 0.0f); - glVertex2i(540, 30); - glTexCoord2f(1.0f, 1.0f); - glVertex2i(540 + 90, 30); - glTexCoord2f(0.0f, 1.0f); - glVertex2i(540 + 90, 30 + 90); - glTexCoord2f(0.0f, 0.0f); - glVertex2i(540, 30 + 90); - glEnd(); - - glDisable(GL_TEXTURE_2D); - glBegin(GL_LINE_LOOP); - glVertex2i(540, 30); - glVertex2i(540 + 90, 30); - glVertex2i(540 + 90, 30 + 90); - glVertex2i(540, 30 + 90); - glEnd(); - glRasterPos2i(360, 65); - printstring(GLUT_BITMAP_HELVETICA_18, "Sphere Texture Map"); - } - - glDisable(GL_TEXTURE_2D); - - glRasterPos2i(10, 10); - printstring(GLUT_BITMAP_HELVETICA_18, frbuf); - glRasterPos2i(360, 470); - printstring(GLUT_BITMAP_HELVETICA_10, - "Ray V1.0 Written by David Bucciarelli (tech.hmw@plus.it)"); - - if (help) - printhelp(); - - glMatrixMode(GL_PROJECTION); - glPopMatrix(); - glMatrixMode(GL_MODELVIEW); - - updatemaps(); - - glutSwapBuffers(); - - Frames++; - { - GLint t = glutGet(GLUT_ELAPSED_TIME); - if (t - T0 >= 2000) { - GLfloat seconds = (t - T0) / 1000.0; - GLfloat fps = Frames / seconds; - sprintf(frbuf, "Frame rate: %f", fps); - T0 = t; - Frames = 0; - } - } -} - -static void -inittextures(void) -{ - int y; - - glGenTextures(1, &checkid); - glBindTexture(GL_TEXTURE_2D, checkid); - - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glTexImage2D(GL_TEXTURE_2D, 0, 3, TEX_CHECK_WIDTH, TEX_CHECK_HEIGHT, - 0, GL_RGB, GL_UNSIGNED_BYTE, checkmap); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - for (y = 0; y < TEX_CHECK_NUMSLOT; y++) - updatecheckmap(y); - - - - glGenTextures(1, &reflectid); - glBindTexture(GL_TEXTURE_2D, reflectid); - - glPixelStorei(GL_UNPACK_ALIGNMENT, 1); - glTexImage2D(GL_TEXTURE_2D, 0, 3, TEX_REFLECT_WIDTH, TEX_REFLECT_HEIGHT, - 0, GL_RGB, GL_UNSIGNED_BYTE, reflectmap); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); - - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - - for (y = 0; y < TEX_REFLECT_NUMSLOT; y++) - updatereflectmap(y); - - -} - -static void -initspherepos(void) -{ - float alpha, beta, sa, ca, sb, cb; - int x, y; - - for (y = 0; y < TEX_REFLECT_HEIGHT; y++) { - beta = M_PI - y * (M_PI / TEX_REFLECT_HEIGHT); - - for (x = 0; x < TEX_REFLECT_WIDTH; x++) { - alpha = -x * (2.0f * M_PI / TEX_REFLECT_WIDTH); - - sa = sin(alpha); - ca = cos(alpha); - - sb = sin(beta); - cb = cos(beta); - - sphere_pos[y][x][0] = SPHERE_RADIUS * sa * sb; - sphere_pos[y][x][1] = SPHERE_RADIUS * ca * sb; - sphere_pos[y][x][2] = SPHERE_RADIUS * cb; - } - } -} - -static void -initdlists(void) -{ - GLUquadricObj *obj; - - obj = gluNewQuadric(); - - lightdlist = glGenLists(1); - glNewList(lightdlist, GL_COMPILE); - gluQuadricDrawStyle(obj, GLU_FILL); - gluQuadricNormals(obj, GLU_NONE); - gluQuadricTexture(obj, GL_TRUE); - gluSphere(obj, 0.25f, 6, 6); - glEndList(); - - objdlist = glGenLists(1); - glNewList(objdlist, GL_COMPILE); - gluQuadricDrawStyle(obj, GLU_FILL); - gluQuadricNormals(obj, GLU_NONE); - gluQuadricTexture(obj, GL_TRUE); - gluSphere(obj, SPHERE_RADIUS, 16, 16); - glEndList(); -} - -int -main(int ac, char **av) -{ - fprintf(stderr, - "Ray V1.0\nWritten by David Bucciarelli (tech.hmw@plus.it)\n"); - - /* - if(!SetPriorityClass(GetCurrentProcess(),REALTIME_PRIORITY_CLASS)) { - fprintf(stderr,"Error setting the process class.\n"); - return 0; - } - - if(!SetThreadPriority(GetCurrentThread(),THREAD_PRIORITY_TIME_CRITICAL)) { - fprintf(stderr,"Error setting the process priority.\n"); - return 0; - } - */ - - glutInitWindowPosition(0, 0); - glutInitWindowSize(WIDTH, HEIGHT); - glutInit(&ac, av); - - glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE); - - if (!(win = glutCreateWindow("Ray"))) { - fprintf(stderr, "Error, couldn't open window\n"); - return -1; - } - - reshape(WIDTH, HEIGHT); - - glShadeModel(GL_FLAT); - glEnable(GL_DEPTH_TEST); - glDepthFunc(GL_LEQUAL); - glEnable(GL_CULL_FACE); - glEnable(GL_TEXTURE_2D); - glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - - glEnable(GL_FOG); - glFogi(GL_FOG_MODE, GL_EXP2); - glFogfv(GL_FOG_COLOR, fogcolor); - - glFogf(GL_FOG_DENSITY, 0.01); -#ifdef FX - glHint(GL_FOG_HINT, GL_NICEST); -#endif - - calcposobs(); - - initspherepos(); - - inittextures(); - initdlists(); - - glClearColor(fogcolor[0], fogcolor[1], fogcolor[2], fogcolor[3]); - - glutReshapeFunc(reshape); - glutDisplayFunc(draw); - glutKeyboardFunc(key); - glutSpecialFunc(special); - glutIdleFunc(draw); - - glutMainLoop(); - - return 0; -} |