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| /* gcc `pkg-config --cflags --libs gtk+-2.0 gtkglext-1.0` -o main main.c */
/******************************* INCLUDES ********************************/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtkgl.h>
#include <GL/gl.h>
#include <GL/glu.h>
/****************************** CONSTANTES ********************************/
#define LARGEUR_DEFAUT 200
#define HAUTEUR_DEFAUT 200
#define TAILLE_JPG 640
#define TITRE "Test GtkGL"
/****************************** STRUCTURES ********************************/
typedef struct _donnees
{
GtkWidget *drawing_area;
GtkWidget *scale;
unsigned char texture[TAILLE_JPG][TAILLE_JPG][3];
unsigned char texture2[TAILLE_JPG][TAILLE_JPG][3];
gboolean anim; /* booléen d'animation */
float spin;
guint idle_id;
}donnees;
/*************************** FONCTIONS POUR CB ***************************/
/*void char2pixbuf(const gchar *texte, const char *nom)
{
GdkPixbuf *pixbuf;
GtkTextBuffer *text_buffer;
GtkTextIter iter;
pixbuf=gdk_pixbuf_new(GDK_COLORSPACE_RGB,FALSE,8,TAILLE_JPG,TAILLE_JPG);
text_buffer=gtk_text_buffer_new(NULL);
gtk_text_buffer_get_start_iter(text_buffer,&iter);
gtk_text_buffer_set_text(text_buffer,"test\nsur deux\nnon trois\n4 lignes",-1);
gtk_text_buffer_insert_pixbuf(text_buffer,&iter,pixbuf);
// gdk_pixbuf_save(pixbuf,nom,"jpeg",NULL,"quality","100",NULL);
}*/
void chargement_texture(char *fichier,unsigned char texture[TAILLE_JPG][TAILLE_JPG][3])
{
guchar *pix;
gint largeur=0,hauteur=0;
GdkPixbuf *pixbuf;
int i,j;
if (pixbuf=gdk_pixbuf_new_from_file(fichier,NULL))
{
hauteur=gdk_pixbuf_get_height(pixbuf);
largeur=gdk_pixbuf_get_width(pixbuf);
for(i=0;i<largeur;i++)
{
for(j=0;j<hauteur;j++)
{
pix=gdk_pixbuf_get_pixels(pixbuf)+i*gdk_pixbuf_get_n_channels(pixbuf)+j*gdk_pixbuf_get_rowstride(pixbuf);
texture[i][j][0]=pix[0];
texture[i][j][1]=pix[1];
texture[i][j][2]=pix[2];
}
}
g_object_unref(pixbuf);
}
}
void scene_base_GL(donnees *d,GLdouble sens,GLdouble translation, GLdouble scale)
{
GLUquadricObj *quad;
int i,j;
GLuint nom_tex;
if (sens>=0)
sens=1.0;
else
sens=-1.0;
/* pour gérer seulement la sph (push et pop) */
glPushMatrix();
glColor4f(0.1,0.2,1.0,1.0);
glTranslatef(0.0,translation,0.0);
glRotatef(d->spin*d->spin,0.0, 0.0, 1.0);
glScaled(1.0,sens,1.0);
glScaled(scale,scale,scale);
quad=gluNewQuadric();
gluQuadricNormals(quad, GLU_SMOOTH);
gluQuadricOrientation(quad, GLU_OUTSIDE);
gluSphere(quad,0.3,20,20);
glPopMatrix();
gluDeleteQuadric(quad);
glPushMatrix();
glGenTextures(1, &nom_tex);
glBindTexture(GL_TEXTURE_2D, nom_tex);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,TAILLE_JPG,TAILLE_JPG,0,GL_RGB,GL_UNSIGNED_BYTE,d->texture2);
glColor4f(1.0,1.0,1.0,1.0);
glTranslatef(0.0,translation,0.0);
glRotatef(90,0.0, 0.0, 1.0);
glRotatef(-d->spin,0.0, 1.0, 0.0);
glScaled(1.0,sens,1.0);
glScaled(scale,scale,scale);
glBegin(GL_POLYGON);
glNormal3f(1.0,0.0,0.0);
glTexCoord2f(0.0,1.0); glVertex3f( 0.5, 0.5, 0.0);
glTexCoord2f(0.0,0.0); glVertex3f( 0.5,-0.5, 0.0);
glTexCoord2f(1.0,0.0); glVertex3f( -0.5,-0.5,-0.0);
glTexCoord2f(1.0,1.0); glVertex3f( -0.5, 0.5,-0.0);
glEnd();
glPopMatrix();
glDeleteTextures(1,&nom_tex);
glPushMatrix();
glGenTextures(1, &nom_tex);
glBindTexture(GL_TEXTURE_2D, nom_tex);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D,0,GL_RGB,TAILLE_JPG,TAILLE_JPG,0,GL_RGB,GL_UNSIGNED_BYTE,d->texture);
glColor4f(1.0,1.0,1.0,1.0);
glTranslatef(0.2,0.15+translation,0.0);
glRotatef(sens*d->spin+90,0.0, 0.0, 1.0);
glScaled(1.0,sens,1.0);
glScaled(scale,scale,scale);
glScaled(scale*3,scale*3,scale*3);
glBegin(GL_POLYGON);
glNormal3f(1.0,0.0,0.0);
glTexCoord2f(0.0,1.0); glVertex3f( 0.5, 0.5, 0.0);
glTexCoord2f(0.0,0.0); glVertex3f( 0.5,-0.5, 0.0);
glTexCoord2f(1.0,0.0); glVertex3f( -0.5,-0.5,-0.0);
glTexCoord2f(1.0,1.0); glVertex3f( -0.5, 0.5,-0.0);
glEnd();
glPopMatrix();
glDeleteTextures(1,&nom_tex);
}
void scene_GL(donnees *d)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
scene_base_GL(d,-1.0,-1.1,0.4);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glPushMatrix();
glColor4f(0.0,0.0,0.0,0.92);
glRotatef(50.0,1.0, 0.0, 0.0);
glTranslatef(0.0,0.0,0.4);
glRectf(-50.0,-50.0,50.0,50.0);
glPopMatrix();
glDisable(GL_BLEND);
scene_base_GL(d,1.0,0.0,0.4);
}
void change_angle(float *spin)
{
*spin+= 10.0;
if (*spin>360.0)
*spin-=360.0;
}
gboolean idle(gpointer data)
{
donnees *d=(donnees *) data;
change_angle(&(d->spin));
gtk_range_set_value(GTK_RANGE(d->scale),(gdouble)d->spin);
gdk_window_invalidate_rect(d->drawing_area->window,&(d->drawing_area->allocation),FALSE);
gdk_window_process_updates(d->drawing_area->window,FALSE); /* MAJ en même temps. */
while(gtk_events_pending())
{
gtk_main_iteration();
}
return TRUE; /* retourne TRUE= bcle */
}
/****************************** CALLBACKS ********************************/
/* initialisation */
void realize(GtkWidget *widget, gpointer data)
{
donnees *d=(donnees *) data;
GdkGLContext *glcontext=gtk_widget_get_gl_context(widget);
GdkGLDrawable *gldrawable=gtk_widget_get_gl_drawable(widget);
if(!gdk_gl_drawable_gl_begin(gldrawable,glcontext))
return;
/* début openGL */
glClearColor(0.0,0.0,0.0,0.0);
glClearDepth (1.0);
glViewport (0, 0, widget->allocation.width, widget->allocation.height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
/* GLfloat light_position[] = {0.0, 50.0,-50.0, 1.0};
GLfloat light_diffuse[] = {0.0, 1.0, 1.0, 1.0};
glLightfv (GL_LIGHT0, GL_POSITION, light_position);
glLightfv (GL_LIGHT0, GL_DIFFUSE, light_diffuse);
glLightf(GL_LIGHT0, GL_LINEAR_ATTENUATION, 0.1);
glEnable (GL_LIGHTING);
glEnable (GL_LIGHT0); */
glEnable (GL_DEPTH_TEST);
glDepthFunc(GL_LESS);
glEnable(GL_NORMALIZE);
glEnable(GL_AUTO_NORMAL);
glShadeModel(GL_SMOOTH);
glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
glEnable(GL_TEXTURE_2D);
/* fin OpenGL */
gdk_gl_drawable_gl_end(gldrawable);
}
/* chgt de configuration (redimensionnement etc...) */
gboolean configure_event(GtkWidget *widget, GdkEventConfigure *event, gpointer data)
{
donnees *d=(donnees *) data;
GdkGLContext *glcontext=gtk_widget_get_gl_context(widget);
GdkGLDrawable *gldrawable=gtk_widget_get_gl_drawable(widget);
if(!gdk_gl_drawable_gl_begin(gldrawable,glcontext))
return FALSE;
glViewport (0, 0, widget->allocation.width, widget->allocation.height);
gdk_gl_drawable_gl_end(gldrawable);
return TRUE;
}
/* "redessinage" de la scène OpenGL */
gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
{
donnees *d=(donnees *) data;
GdkGLContext *glcontext=gtk_widget_get_gl_context(widget);
GdkGLDrawable *gldrawable=gtk_widget_get_gl_drawable(widget);
if(!gdk_gl_drawable_gl_begin(gldrawable,glcontext))
return FALSE;
scene_GL(d);
/* Gestion de(s) buffer(s) */
if(gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers(gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end(gldrawable);
return TRUE;
}
gboolean motion_notify_event(GtkWidget *widget, GdkEventMotion *event, gpointer data)
{
donnees *d=(donnees *) data;
/* A remplir */
return TRUE;
}
gboolean button_press_event(GtkWidget *widget, GdkEventButton *event, gpointer data)
{
donnees *d=(donnees *) data;
/* Si clic=>animation */
if (event->button==1)
{
d->anim=!d->anim;
if(d->anim)
{
if(d->idle_id==0)
{
idle(d);
d->idle_id=g_timeout_add(40,(GSourceFunc)idle,d);
}
}
else
{
if(d->idle_id!=0)
{
g_source_remove(d->idle_id);
d->idle_id=0;
}
gdk_window_invalidate_rect(widget->window, &widget->allocation,FALSE);
}
return TRUE;
}
return FALSE;
}
gboolean key_press_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
{
donnees *d=(donnees *) data;
switch(event->keyval)
{
case GDK_Right:
printf("->\n");
break;
case GDK_Left:
printf("<-\n");
break;
case GDK_Page_Down:
printf(" -\n -\n -\n\\/\n");
break;
case GDK_Page_Up:
printf("/\\ \n -\n -\n -\n");
break;
case GDK_Escape:
gtk_main_quit();
break;
}
return FALSE;
}
gboolean visibility_notify_event(GtkWidget *widget, GdkEventVisibility *event, gpointer data)
{
donnees *d=(donnees *) data;
if(event->state==GDK_VISIBILITY_FULLY_OBSCURED)
{
if(d->idle_id==0)
{
change_angle(&(d->spin));
g_idle_add_full(GDK_PRIORITY_REDRAW,(GSourceFunc) idle,widget,NULL);
}
}
else
{
if(d->idle_id!=0)
{
g_source_remove(d->idle_id);
d->idle_id=0;
}
gdk_window_invalidate_rect(widget->window, &widget->allocation,FALSE);
}
return TRUE;
}
/****************************** FONCTIONS ********************************/
/* On initialise la configuration de l'OpenGL en essayant dans l'ordre un double buffer, un simple ou on quitte le programme */
GdkGLConfig *conf_gl(void)
{
GdkGLConfig *glconf;
glconf=gdk_gl_config_new_by_mode(GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH | GDK_GL_MODE_DOUBLE);
if (glconf==NULL)
glconf=gdk_gl_config_new_by_mode(GDK_GL_MODE_RGBA | GDK_GL_MODE_DEPTH);
if (glconf==NULL)
{
g_printf("Installez l'openGL !!! ");
exit(1);
}
return glconf;
}
void valeur_scale0(GtkWidget *w,gpointer data)
{
donnees *f=(donnees *) data;
f->spin=(int)gtk_range_get_value(GTK_RANGE(w));
gdk_window_invalidate_rect(f->drawing_area->window, &(f->drawing_area->allocation), FALSE);
gdk_window_process_updates(f->drawing_area->window, FALSE); /* MAJ en même temps. */
}
GtkWidget *creation_fenetre(char *titre, donnees *data)
{
GdkGLConfig *glconf;
GtkWidget *win, *vbox, *bouton, *frame, *label;
GdkColor color;
/* configuration de l'openGL */
glconf=conf_gl();
/*création de la fenêtre*/
win=gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(win),titre);
gtk_window_set_position(GTK_WINDOW(win),GTK_WIN_POS_CENTER);
gtk_window_set_resizable(GTK_WINDOW(win),TRUE);
/* gtk_window_maximize(GTK_WINDOW(win));
gtk_window_fullscreen(GTK_WINDOW(win));
gtk_window_set_icon_from_file(GTK_WINDOW(f->win),"icone.png",NULL);*/
gtk_container_set_reallocate_redraws(GTK_CONTAINER(win),TRUE); /* redessine si l'allocation d'enfant change */
g_signal_connect(G_OBJECT(win),"delete-event",G_CALLBACK(gtk_main_quit),NULL);
g_signal_connect(G_OBJECT(win),"key_press_event",G_CALLBACK(key_press_event),data);
/* color.pixel=32;*/ color.red=0;color.green=0;color.blue=0;
gtk_widget_modify_bg(win, GTK_STATE_NORMAL, &color);
vbox=gtk_vbox_new(FALSE,0);
gtk_container_add(GTK_CONTAINER(win),vbox);
data->drawing_area=gtk_drawing_area_new();
gtk_widget_set_size_request(data->drawing_area,LARGEUR_DEFAUT,HAUTEUR_DEFAUT);
gtk_widget_set_gl_capability(data->drawing_area, glconf, NULL, TRUE, GDK_GL_RGBA_TYPE);
/* On autorise certains événement dans le drawing_area, puis on leur adjoint des callbacks */
gtk_widget_add_events(data->drawing_area,GDK_BUTTON1_MOTION_MASK | GDK_BUTTON2_MOTION_MASK | GDK_BUTTON_PRESS_MASK | GDK_VISIBILITY_NOTIFY_MASK);
g_signal_connect(G_OBJECT(data->drawing_area),"realize",G_CALLBACK(realize),data);
g_signal_connect(G_OBJECT(data->drawing_area),"configure-event",G_CALLBACK(configure_event),data);
g_signal_connect(G_OBJECT(data->drawing_area),"expose-event",G_CALLBACK(expose_event),data);
g_signal_connect(G_OBJECT(data->drawing_area),"motion_notify_event",G_CALLBACK(motion_notify_event),data);
g_signal_connect(G_OBJECT(data->drawing_area),"button_press_event",G_CALLBACK(button_press_event),data);
g_signal_connect(G_OBJECT(data->drawing_area),"visibility_notify_event",G_CALLBACK(visibility_notify_event),data);
gtk_box_pack_start(GTK_BOX(vbox),data->drawing_area,TRUE,TRUE,0);
label=gtk_label_new(NULL);
gtk_label_set_markup(GTK_LABEL(label),g_locale_to_utf8("<span font_desc=\"Arial\" foreground=\"#FFFFFF\">Angle</span>",-1, NULL, NULL, NULL));
frame=gtk_frame_new("Angle");
gtk_frame_set_label_widget(GTK_FRAME(frame),label);
gtk_box_pack_start(GTK_BOX(vbox),frame,FALSE,FALSE,0);
data->scale=gtk_hscale_new_with_range(0,360,10);
gtk_scale_set_value_pos(GTK_SCALE(data->scale),GTK_POS_RIGHT);
gtk_scale_set_digits(GTK_SCALE(data->scale),0);
gtk_range_set_increments(GTK_RANGE(data->scale),1.0,10.0);
gtk_range_set_value(GTK_RANGE(data->scale),0.0);
gtk_scale_set_draw_value(GTK_SCALE(data->scale),FALSE);
gtk_container_add(GTK_CONTAINER(frame),data->scale);
data->spin=(int)gtk_range_get_value(GTK_RANGE(data->scale));
g_signal_connect(G_OBJECT(data->scale),"value-changed",G_CALLBACK(valeur_scale0),data);
bouton=gtk_button_new_with_label("Quitter");
gtk_box_pack_start(GTK_BOX(vbox),bouton,FALSE,FALSE,0);
g_signal_connect(G_OBJECT(bouton),"clicked",G_CALLBACK(gtk_main_quit),NULL);
chargement_texture("test.jpg",data->texture);
chargement_texture("test2.jpg",data->texture2);
return win;
}
/********************************* MAIN **********************************/
int main(int argc, char **argv)
{
GtkWidget *fenetre;
donnees d;
d.anim=FALSE;
d.spin=0.0;
d.idle_id=0;
gtk_init(&argc,&argv);
gtk_gl_init(&argc,&argv);
fenetre=creation_fenetre(TITRE,&d);
gtk_widget_show_all(fenetre);
gtk_main();
return EXIT_SUCCESS;
} |
