solar_system/window.c

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/*!\file window.c
* \brief Utilisation du raster "maison" pour finaliser le pipeline de
* rendu 3D. Ici on peut voir les géométries disponibles.
* \author Farès BELHADJ, amsi@up8.edu
* \date December 4, 2020.
* \todo pour les étudiant(e)s : changer la variation de l'angle de
* rotation pour qu'il soit dépendant du temps et non du framerate
*/
#include <assert.h>
/* inclusion des entêtes de fonctions de gestion de primitives simples
* de dessin. La lettre p signifie aussi bien primitive que
* pédagogique. */
#include <GL4D/gl4dp.h>
/* inclure notre bibliothèque "maison" de rendu */
#include "moteur.h"
/* inclusion des entêtes de fonctions de création et de gestion de
* fenêtres système ouvrant un contexte favorable à GL4dummies. Cette
* partie est dépendante de la bibliothèque SDL2 */
#include <GL4D/gl4duw_SDL2.h>
/* protos de fonctions locales (static) */
static void init(void);
static void draw(void);
static void key(int keycode);
static void sortie(void);
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static void pmotion(int x, int y);
static void mouse(int button, int state, int x, int y);
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static void goto_obj(float * mvMat);
static void move_to(float posx, float posy , float posz);
static int get_sign(float x, float y);
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/*!\brief un identifiant pour l'écran (de dessin) */
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static uint _screenId = 0;
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/*!\brief une surface représentant une sphere */
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static surface_t * _sun = NULL;
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static surface_t * _planet[9] = { NULL, NULL, NULL,
NULL, NULL, NULL,
NULL, NULL, NULL };
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static surface_t * _moon[18] = {NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL};
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/* des variable d'états pour activer/désactiver des options de rendu */
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static int _use_tex = 1, _use_color = 0, _use_lighting = 1;
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typedef struct cam_t cam_t;
struct cam_t {
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float x, y, z;
float theta;
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};
static cam_t _cam = {0, 1.0f, 10, 0};
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static float _v = 0.1f;
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static int _wW = 1200, _wH = 900;
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static int _xm = 400, _ym = 300;
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static int _pause = 0;
static float _s = 1.0f;
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static int _movement = 1;
static int _p = -1;
static float _a = 0.0f;
static int _overview = 0;
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/*!\brief paramètre l'application et lance la boucle infinie. */
int main(int argc, char ** argv) {
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/* tentative de création d'une fenêtre pour GL4Dummies */
if(!gl4duwCreateWindow(argc, argv, /* args du programme */
"Solar System", /* titre */
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10, 10, _wW, _wH, /* x, y, largeur, heuteur */
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GL4DW_SHOWN) /* état visible */) {
/* ici si échec de la création souvent lié à un problème d'absence
* de contexte graphique ou d'impossibilité d'ouverture d'un
* contexte OpenGL (au moins 3.2) */
return 1;
}
/* Pour forcer la désactivation de la synchronisation verticale */
SDL_GL_SetSwapInterval(0);
init();
/* création d'un screen GL4Dummies (texture dans laquelle nous
* pouvons dessiner) aux dimensions de la fenêtre */
_screenId = gl4dpInitScreen();
/* mettre en place la fonction d'interception clavier */
gl4duwMouseFunc(mouse);
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gl4duwKeyDownFunc(key);
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gl4duwPassiveMotionFunc(pmotion);
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/* mettre en place la fonction de display */
gl4duwDisplayFunc(draw);
/* boucle infinie pour éviter que le programme ne s'arrête et ferme
* la fenêtre immédiatement */
gl4duwMainLoop();
return 0;
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}
/*!\brief init de nos données, spécialement les trois surfaces
* utilisées dans ce code */
void init(void) {
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uint id[9], sun_id, i, moon_id[18];
_sun = mkSphere(12, 12); /*ça fait 12x12x2 trianles !*/
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for(i = 0; i < 18; ++i) {
_moon[i] = mkSphere(12, 12);
}
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for(i = 0; i < 9; ++i) {
_planet[i] = mkSphere(12, 12);
}
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sun_id = getTexFromBMP("images/2k-sun.bmp");
id[0] = getTexFromBMP("images/2k-mercury.bmp");
id[1] = getTexFromBMP("images/2k-venus-surface.bmp");
id[2] = getTexFromBMP("images/2k-earth-daymap.bmp");
id[3] = getTexFromBMP("images/2k-mars.bmp");
id[4] = getTexFromBMP("images/2k-jupiter.bmp");
id[5] = getTexFromBMP("images/2k-saturn.bmp");
id[6] = getTexFromBMP("images/2k-uranus.bmp");
id[7] = getTexFromBMP("images/2k-neptune.bmp");
id[8] = getTexFromBMP("images/pluto.bmp");
// https://upload.wikimedia.org/wikipedia/commons/4/4f/Moons_of_solar_system_v7.jpg
moon_id[0] = getTexFromBMP("images/2k-moon.bmp");
moon_id[1] = getTexFromBMP("images/moons/phobos.bmp");
moon_id[2] = getTexFromBMP("images/moons/deimos.bmp");
moon_id[3] = getTexFromBMP("images/moons/io.bmp");
moon_id[4] = getTexFromBMP("images/moons/europa.bmp");
moon_id[5] = getTexFromBMP("images/moons/ganymede.bmp");
moon_id[6] = getTexFromBMP("images/moons/callisto.bmp");
moon_id[7] = getTexFromBMP("images/moons/enceladus.bmp");
moon_id[8] = getTexFromBMP("images/moons/dione.bmp");
moon_id[9] = getTexFromBMP("images/moons/rhea.bmp");
moon_id[10] = getTexFromBMP("images/moons/titan.bmp");
moon_id[11] = getTexFromBMP("images/moons/iapetus.bmp");
moon_id[12] = getTexFromBMP("images/moons/ariel.bmp");
moon_id[13] = getTexFromBMP("images/moons/umbriel.bmp");
moon_id[14] = getTexFromBMP("images/moons/titania.bmp");
moon_id[15] = getTexFromBMP("images/moons/oberon.bmp");
moon_id[16] = getTexFromBMP("images/moons/triton.bmp");
moon_id[17] = getTexFromBMP("images/moons/charon.bmp");
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setTexId(_sun, sun_id);
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for(i = 0; i < 18; ++i)
setTexId(_moon[i], moon_id[i]);
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for(i = 0; i < 9; ++i)
setTexId(_planet[i], id[i]);
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if(_use_tex) {
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enableSurfaceOption(_sun, SO_USE_TEXTURE);
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for(i = 0; i < 18; ++i)
enableSurfaceOption(_moon[i], SO_USE_TEXTURE);
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for(i = 0; i < 9; ++i)
enableSurfaceOption(_planet[i], SO_USE_TEXTURE);
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}
/* si _use_lighting != 0, on active l'ombrage */
if(_use_lighting) {
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enableSurfaceOption(_sun, SO_USE_LIGHTING);
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for(i = 0; i < 18; ++i)
enableSurfaceOption(_moon[i], SO_USE_LIGHTING);
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for(i = 0; i < 9; ++i)
enableSurfaceOption(_planet[i], SO_USE_LIGHTING);
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}
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disableSurfaceOption(_sun, SO_USE_COLOR);
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for(i = 0; i < 18; ++i)
disableSurfaceOption(_moon[i], SO_USE_COLOR);
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for(i = 0; i < 9; ++i)
disableSurfaceOption(_planet[i], SO_USE_COLOR);
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atexit(sortie);
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}
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static int get_sign(float x, float y) {
if (x > y)
return 1;
return -1;
}
static void move_to(float posx, float posy , float posz){
float epsilon = 0.1f;
if (fabsf(_cam.x - posx) > epsilon){
_cam.x = _cam.x - (get_sign(_cam.x, posx) * 0.2f);
}
if (fabsf(_cam.y - posy) > epsilon){
_cam.y = _cam.y - (get_sign(_cam.y, posy) * 0.2f);
}
if (fabsf(_cam.z - posz) > epsilon){
_cam.z = _cam.z - (get_sign(_cam.z, posz) * 0.2f);
}
}
static void goto_obj(float * mvMat) {
switch (_p) {
case 1:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 4.2f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(4.2f, 1.0f, 0.5f);
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break;
case 2:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 7.9f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(7.9f, 1.0f, 1.0f);
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break;
case 3:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 10.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(10.0f, 1.0f, 1.0f);
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break;
case 4:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 15.2f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(15.2f, 1.0f, 0.5f);
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break;
case 5:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 30.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(30.0f, 1.0f, 5.0f);
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break;
case 6:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 50.4f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(50.4f, 1.0f, 5.0f);
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break;
case 7:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 65.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(65.0f, 1.0f, 5.0f);
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break;
case 8:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 75.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(75.0f, 1.0f, 4.0f);
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break;
case 9:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 85.4f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(85.4f, 1.0f, 0.1f);
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break;
case 0:
_a = 0;
lookAt(mvMat, _cam.x, _cam.y, _cam.z, 0, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f);
move_to(0.0f, 1.0f, 10.0f);
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break;
}
}
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/*!\brief la fonction appelée à chaque display. */
void draw(void) {
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static float r = 0.0f;
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static double t0 = 0, t, dt;
t = gl4dGetElapsedTime();
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dt = (t - t0) / 1000.0;
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t0 = t;
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float mvMat[16], projMat[16], nmv[16], cpy[16];
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/* effacer l'écran et le buffer de profondeur */
gl4dpClearScreen();
clearDepth();
/* des macros facilitant le travail avec des matrices et des
* vecteurs se trouvent dans la bibliothèque GL4Dummies, dans le
* fichier gl4dm.h */
/* charger un frustum dans projMat */
MFRUSTUM(projMat, -0.005f, 0.005f, -0.005f, 0.005f, 0.01f, 1000.0f);
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/* charger la matrice identité dans model-view */
MIDENTITY(mvMat);
// Y ----> 1.0 - (_ym - (_wH >> 1)) / (float)_wH * 5
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if (_movement)
lookAt(mvMat, _cam.x, _cam.y, _cam.z, _cam.x - sin(_cam.theta), 1.0, _cam.z - cos(_cam.theta), 0.0, 1.0, 0.0);
else
goto_obj(mvMat);
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// SUN
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memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, (r / 24.5f), 0.0f, 1.0f, 0.0f);
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translate(nmv, 0.0f, 1.0f, 0.0f);
scale(nmv, 2,2,2);
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transform_n_raster(_sun, nmv, projMat);
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// MERCURY
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memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, (_a / 87.97f), 0.0f, 1.0f, 0.0f); // orbit mouvement
translate(nmv, 4.2f, 1.0f, 0.0f);
scale(nmv, (1/227.0f) * 12.0f, (1/227.0f) * 12.0f, (1/227.0f) * 12.0f);
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rotate(nmv, (r / 59.0f), 0.0f, 1.0f, 0.0f); // rotation
transform_n_raster(_planet[0], nmv, projMat);
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// VENUS
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memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, (_a / 224.7f), 0.0f, 1.0f, 0.0f); // orbit mouvement
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translate(nmv, 7.9f, 1.0f, 0.0f);
scale(nmv, (1/113.0f) * 12.0f, (1/113.0f) * 12.0f, (1/113.0f) * 12.0f);
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rotate(nmv, (r / 243.75f), -0.1773f, -1.0f, 0.0f); // rotation anti-clockwise
transform_n_raster(_planet[1], nmv, projMat);
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// EARTH
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memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, (_a / 365.2425f), 0.0f, 1.0f, 0.0f);
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translate(nmv, 10.0f, 1.0f, 0.0f);
scale(nmv, (1/108.0f) * 12.0f, (1/108.0f) * 12.0f, (1/108.0f) * 12.0f);
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rotate(nmv, r, -0.234f, 1.0f, 0.0f);
transform_n_raster(_planet[2], nmv, projMat);
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// Moon
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translate(nmv, 4.0f, 0.0f, 0.0f);
scale(nmv, (1/5.0f) , (1/5.0f), (1/5.0f));
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transform_n_raster(_moon[0], nmv, projMat);
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// MARS
memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, (_a / 686.98f), 0.0f, 1.0f, 0.0f);
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translate(nmv, 15.2f, 1.0f, 0.0f);
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scale(nmv, (1/208.0f) * 12.0f, (1/208.0f) * 12.0f, (1/208.0f) * 12.0f);
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rotate(nmv, r / 1.0416f, -0.252f, 1.0f, 0.0f);
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transform_n_raster(_planet[3], nmv, projMat);
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memcpy(cpy, nmv, sizeof cpy);
// Phobos
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rotate(nmv, r * 4.3f, 0.0f, 0.1f, 0.0f);
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translate(nmv, 10.0f, 1.0f, 0.0f);
scale(nmv, (1/5.0f), (1/5.0f), (1/5.0f));
transform_n_raster(_moon[1], nmv, projMat);
// Deimos
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rotate(cpy, r / 1.5f, 0.0f, 0.1f, 0.0f);
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translate(cpy, 25.0f, 1.0f, 0.0f);
scale(cpy, (1/6.0f), (1/6.0f), (1/6.0f));
transform_n_raster(_moon[2], cpy, projMat);
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// JUPITER
memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, _a / (12 * 365.2425f), 0.0f, 1.0f, 0.0f);
translate(nmv, 30.0f, 1.0f, 0.0f);
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scale(nmv, (1/9.7f) * 12.0f, (1/9.7f) * 12.0f, (1/9.7f) * 12.0f);
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rotate(nmv, r / 0.416f, -0.031f, 1.0f, 0.0f);
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transform_n_raster(_planet[4], nmv, projMat);
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memcpy(cpy, nmv, sizeof cpy);
// Io
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rotate(nmv, r * 3.0f, 0.0f, 0.1f, 0.0f);
translate(nmv, 3.0f, 0.0f, 0.0f);
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scale(nmv, (1/11.2f), (1/11.2f), (1/11.2f)); // 1/11.2f -> Jupiter is bigger then earth 11.2x / 50 io ~= moon size.
transform_n_raster(_moon[3], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
// Europa
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rotate(nmv, r / 2.0f, 0.0f, 0.1f, 0.0f);
translate(nmv, 4.0f, 0.0f, 0.0f);
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scale(nmv, (1/13.2f), (1/13.2f), (1/13.2f));
transform_n_raster(_moon[4], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
// Ganymede
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rotate(nmv, r / 3.0f, 0.0f, 0.1f, 0.0f);
translate(nmv, 5.0f, 0.0f, 0.0f);
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scale(nmv, (1/9.0f), (1/9.0f), (1/9.0f));
transform_n_raster(_moon[5], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
// Callisto
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rotate(nmv, r / 5.0f, 0.0f, 0.1f, 0.0f);
translate(nmv, 6.0f, 0.0f, 0.0f);
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scale(nmv, (1/10.0f), (1/10.0f), (1/10.0f));
transform_n_raster(_moon[6], nmv, projMat);
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// SATURN
memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, _a / (30 * 365.2425f), 0.0f, 1.0f, 0.0f);
translate(nmv, 50.4f, 1.0f, 0.0f);
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scale(nmv, (1/11.4f) * 12.0f, (1/11.4f) * 12.0f, (1/11.4f) * 12.0f);
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rotate(nmv, r / 0.4583f, -0.267f, 1.0f, 0.0f);
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transform_n_raster(_planet[5], nmv, projMat);
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memcpy(cpy, nmv, sizeof cpy);
// Enceladus
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rotate(nmv, r * 5.0f, 0.0f, 0.1f, 0.0f);
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translate(nmv, 2.0f, 0.0f, 0.0f);
scale(nmv, (1/20.0f), (1/20.0f), (1/20.0f));
transform_n_raster(_moon[7], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
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// Dione
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rotate(nmv, r * 4.0f, 0.0f, 0.01f, 0.0f);
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translate(nmv, 3.0f, 0.0f, 0.0f);
scale(nmv, (1/18.0f), (1/18.0f), (1/18.0f));
transform_n_raster(_moon[8], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
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// Rhea
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rotate(nmv, r * 3.0f, 0.0f, 0.01f, 0.0f);
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translate(nmv, 4.0f, 0.0f, 0.0f);
scale(nmv, (1/15.0f), (1/15.0f), (1/15.0f));
transform_n_raster(_moon[9], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
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// Titan
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rotate(nmv, r / 4.0f, 0.0f, 0.01f, 0.0f);
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translate(nmv, 6.0f, 0.0f, 0.0f);
scale(nmv, (1/10.0f), (1/10.0f), (1/10.0f));
transform_n_raster(_moon[10], nmv, projMat);
memcpy(nmv, cpy, sizeof nmv);
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// Iapetus
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rotate(nmv, r / 6.0f, 0.0f, 0.01f, 0.0f);
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translate(nmv, 7.0f, 0.0f, 0.0f);
scale(nmv, (1/14.0f), (1/14.0f), (1/14.0f));
transform_n_raster(_moon[11], nmv, projMat);
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// URANUS
memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, _a / (84 * 365.2425f), 0.0f, 1.0f, 0.0f);
translate(nmv, 65.0f, 1.0f, 0.0f);
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scale(nmv, (1/26.8f) * 12.0f, (1/26.8f) * 12.0f, (1/26.8f) * 12.0f);
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rotate(nmv, r / 0.7083f, -0.978f, 0.0f, 0.0f);
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transform_n_raster(_planet[6], nmv, projMat);
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memcpy(cpy, nmv, sizeof cpy);
// Ariel
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rotate(nmv, r , 0.01f, 0.0f, 0.0f);
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translate(nmv, 0.0f, 3.0f, 0.0f);
scale(nmv, (1/20.0f), (1/20.0f), (1/20.0f));
transform_n_raster(_moon[12], nmv, projMat);
memcpy (nmv, cpy, sizeof nmv);
// Umbriel
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rotate(nmv, r / 2.0f, 0.01f, 0.0f, 0.0f);
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translate(nmv, 0.0f, 4.0f, 0.0f);
scale(nmv, (1/20.0f), (1/20.0f), (1/20.0f));
transform_n_raster(_moon[13], nmv, projMat);
memcpy (nmv, cpy, sizeof nmv);
// Titania
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rotate(nmv, r / 3.0f, 0.01f, 0.0f, 0.0f);
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translate(nmv, 0.0f, 5.0f, 0.0f);
scale(nmv, (1/17.0f), (1/17.0f), (1/17.0f));
transform_n_raster(_moon[14], nmv, projMat);
memcpy (nmv, cpy, sizeof nmv);
// Oberon
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rotate(nmv, r / 5.0f, 0.01f, 0.0f, 0.0f);
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translate(nmv, 0.0f, 6.0f, 0.0f);
scale(nmv, (1/17.0f), (1/17.0f), (1/17.0f));
transform_n_raster(_moon[15], nmv, projMat);
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// NEPTUNE
memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, _a / (165 * 365.2425f), 0.0f, 1.0f, 0.0f);
translate(nmv, 75.0f, 1.0f, 0.0f);
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scale(nmv, (1/27.7f) * 12.0f, (1/27.7f) * 12.0f, (1/27.7f) * 12.0f);
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rotate(nmv, r / 0.6f, -0.283f, 1.0f, 0.0f);
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transform_n_raster(_planet[7], nmv, projMat);
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// Triton
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rotate(nmv, r / 5.0f, 0.0f, 0.01f, 0.0f);
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translate(nmv, 3.0f, 0.0f, 0.0f);
scale(nmv, (1/10.0f), (1/10.0f), (1/10.0f));
transform_n_raster(_moon[16], nmv, projMat);
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// PLUTO
memcpy(nmv, mvMat, sizeof nmv); /* copie mvMat dans nmv */
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rotate(nmv, _a / (248 * 365.2425f), 0.0f, 1.0f, 0.0f);
translate(nmv, 85.4f, 1.0f, 0.0f);
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scale(nmv, (1/500.0f) * 12.0f, (1/500.0f) * 12.0f, (1/500.0f) * 12.0f);
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rotate(nmv, r / 6.4, -0.119f, 1.0f, 0.0f);
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transform_n_raster(_planet[8], nmv, projMat);
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// Charon
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rotate(nmv, r / 5.0f, 0.0f, 0.01f, 0.0f);
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translate(nmv, 3.0f, 0.0f, 0.0f);
scale(nmv, (1/13.0f), (1/13.0f), (1/13.0f));
transform_n_raster(_moon[16], nmv, projMat);
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/* déclarer qu'on a changé (en bas niveau) des pixels du screen */
gl4dpScreenHasChanged();
/* fonction permettant de raffraîchir l'ensemble de la fenêtre*/
gl4dpUpdateScreen(NULL);
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if (_pause != 1){
_a += ((360.0 * dt) / 60) * _s; // 360 in 1 minute so 1 day = 1 min
r += ((360.0 * dt) / 60) * _s; // 360 in 1 minute so 1 day = 1 min
}
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}
/*!\brief intercepte l'événement clavier pour modifier les options. */
void key(int keycode) {
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double step = 5.0;
int i;
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switch(keycode) {
case GL4DK_UP:
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if (_movement)
_cam.y += 5;
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break;
case GL4DK_DOWN:
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if (_movement)
_cam.y -= 5;
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break;
case GL4DK_RIGHT:
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if (!_pause)
_s += 30.0f;
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break;
case GL4DK_LEFT:
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if (!_pause)
_s -= 30.0f;
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break;
case GL4DK_w:
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if (_movement) {
_cam.x += -_v * step * sin(_cam.theta);
_cam.z += -_v * step * cos(_cam.theta);
}
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break;
case GL4DK_s:
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if (_movement) {
_cam.x += _v * step * sin(_cam.theta);
_cam.z += _v * step * cos(_cam.theta);
}
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break;
case GL4DK_a:
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if (_movement)
_cam.theta += _v * step;
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break;
case GL4DK_d:
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if (_movement)
_cam.theta -= _v * step;
break;
case GL4DK_p:
if (_pause == 0)
_pause = 1;
else
_pause = 0;
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break;
case GL4DK_MINUS:
_v -= 0.01f;
if (_v < 0.01f){
_v = 0.01f;
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}
break;
case GL4DK_EQUALS:
_v += 0.01f;
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if (_v > 0.5f){
_v = 0.5f;
}
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break;
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case GL4DK_o:
if (_movement) {
if (!_overview) {
_overview = !_overview;
_cam.x = 0.0f;
_cam.y = 200.0f;
_cam.z = 0.0f;
_cam.theta = 0.0f;
} else {
_overview = !_overview;
_cam.x = 0.0f;
_cam.y = 1.0f;
_cam.z = 10.0f;
_cam.theta = 0.0f;
}
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}
break;
case GL4DK_r:
_p = -1;
_pause = 0;
_movement = 1;
break;
case GL4DK_z:
break;
case GL4DK_0:
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_p = 0;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_1:
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_p = 1;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_2:
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_p = 2;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_3:
_p = 3;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_4:
_p = 4;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_5:
_p = 5;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_6:
_p = 6;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_7:
_p = 7;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_8:
_p = 8;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
case GL4DK_9:
_p = 9;
_pause = 1;
_movement = 0;
_cam.x = (int)_cam.x;
_cam.y = (int)_cam.y;
_cam.z = (int)_cam.z;
break;
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case GL4DK_t: /* 't' la texture */
_use_tex = !_use_tex;
if(_use_tex) {
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enableSurfaceOption(_sun, SO_USE_TEXTURE);
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for(i = 0; i < 18; ++i)
enableSurfaceOption(_moon[i], SO_USE_TEXTURE);
for(i = 0; i < 9; ++i)
enableSurfaceOption(_planet[i], SO_USE_TEXTURE);
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} else {
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disableSurfaceOption(_sun, SO_USE_TEXTURE);
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for(i = 0; i < 18; ++i)
disableSurfaceOption(_moon[i], SO_USE_TEXTURE);
for(i = 0; i < 9; ++i)
disableSurfaceOption(_planet[i], SO_USE_TEXTURE);
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}
break;
case GL4DK_c: /* 'c' utiliser la couleur */
_use_color = !_use_color;
if(_use_color) {
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enableSurfaceOption(_sun, SO_USE_COLOR);
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for(i = 0; i < 18; ++i)
enableSurfaceOption(_moon[i], SO_USE_COLOR);
for(i = 0; i < 9; ++i)
enableSurfaceOption(_planet[i], SO_USE_COLOR);
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} else {
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disableSurfaceOption(_sun, SO_USE_COLOR);
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for(i = 0; i < 18; ++i)
disableSurfaceOption(_moon[i], SO_USE_COLOR);
for(i = 0; i < 9; ++i)
disableSurfaceOption(_planet[i], SO_USE_COLOR);
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}
break;
case GL4DK_l: /* 'l' utiliser l'ombrage par la méthode Gouraud */
_use_lighting = !_use_lighting;
if(_use_lighting) {
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enableSurfaceOption(_sun, SO_USE_LIGHTING);
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for(i = 0; i < 18; ++i)
enableSurfaceOption(_moon[i], SO_USE_LIGHTING);
for(i = 0; i < 9; ++i)
enableSurfaceOption(_planet[i], SO_USE_LIGHTING);
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} else {
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disableSurfaceOption(_sun, SO_USE_LIGHTING);
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for(i = 0; i < 18; ++i)
disableSurfaceOption(_moon[i], SO_USE_LIGHTING);
for(i = 0; i < 9; ++i)
disableSurfaceOption(_planet[i], SO_USE_LIGHTING);
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}
break;
default: break;
}
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}
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static void pmotion(int x, int y) {
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if (_movement){
_xm = x;
_ym = y;
_cam.theta = -(_xm - (_wW >> 1)) / (float)_wW*10;
}
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}
static void mouse(int button, int state, int x, int y) {
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if (_movement){
double dtheta = M_PI;
if (button == GL4D_BUTTON_LEFT)
_cam.y += dtheta;
if (button == GL4D_BUTTON_RIGHT)
_cam.y -= dtheta;
if (button == GL4D_BUTTON_MIDDLE)
_cam.y = 1.0f;
}
}
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/*!\brief à appeler à la sortie du programme. */
void sortie(void) {
int i;
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if(_sun) {
freeSurface(_sun);
_sun = NULL;
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}
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for(i = 0; i < 18; ++i) {
if(_moon[i]){
freeSurface(_moon[i]);
_moon[i] = NULL;
}
}
for(i = 0; i < 9; ++i) {
if(_planet[i]){
freeSurface(_planet[i]);
_planet[i] = NULL;
}
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}
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/* libère tous les objets produits par GL4Dummies, ici
* principalement les screen */
gl4duClean(GL4DU_ALL);
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}