Hi !
I have made a little glut animation, with a triangle which rotates. And i wanted to put it with a gtk menu.
The probleme is, there is no more rotation. It seems to be, that gtk stop the opengl (glut) loop.
How can I make this animation working ?
I make it with gluut because, later I wanted to make some more complicated thing with it, and use de glui too.
I need to make an animation (glut), with a menu(gtk). I don’t very well gtk, and glut is for me the best to make a scene with interactions with the mouse and keyboard, use glui widgets, and etc…
Please help me.
You just should not mix glut with gtk. If you want to have gtk you should use a gtk widget for your rendering context.
Originally posted by satan:
You just should not mix glut with gtk. If you want to have gtk you should use a gtk widget for your rendering context.
I don’t understand. Is it , if I want to use gtk with glut this story of widget ?
Please, give a look at my source, I’ve tried to make it with 2 threads :
#include <stdio.h>
#include <stdlib.h>
#include <gtk/gtk.h>
#include <GL/glut.h>
float angle = 0.0;
//************ Glut Init ****************//
void Initialisation()
{
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glClearColor(0, 0, 0, 1);
}
void Reshape(int largeur, int hauteur)
{
if(hauteur == 0)
hauteur = 1;
float ratio = 1.0* largeur / hauteur;
// Reset the coordinate system before modifying
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// Set the viewport to be the entire window
glViewport(0, 0, largeur, hauteur);
//gluOrtho2D(-1, 1, -1, 1);
gluPerspective(45,ratio,1,1000);
// Set the correct perspective.
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0.0,0.0,5.0,
0.0,0.0,-1.0,
0.0f,1.0f,0.0f);
}
//******* Gl Paint *************//
void Dessin(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(angle,0.0,1.0,0.0);
glBegin(GL_TRIANGLES);
glColor3f(1.0,0,0);glVertex3f(-0.5,-0.5,0.0);
glColor3f(0,1.0,0);glVertex3f(0.5,0.0,0.0);
glColor3f(0,0,1.0);glVertex3f(0.0,0.5,0.0);
glEnd();
glPopMatrix();
angle++;
//glFinish();
glFlush();
glutSwapBuffers();
}
static void Touche(unsigned char key, int x, int y)
{
printf("Touche: %d
",key);
switch (key)
{
case 27:
exit(0);
break;
}
}
//*************** Glut Function ***************//
void opengl_thread(void)
{
glutInitWindowSize(200,200 );
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
glutCreateWindow(“Fenetre OpenGL”);
Initialisation();
glutReshapeFunc(Reshape);
glutDisplayFunc(Dessin);
glutKeyboardFunc(Touche);
Initialisation();
glutMainLoop();
}
void cb_ok()
{
printf("Ok Clicked…
");
}
//********* GTK Interface *********//
int menuInterface(void)
{
GtkWidget *pwindow;
GtkWidget *pMenuBar;
GtkWidget *pMenu;
GtkWidget *pMenuItem;
GtkWidget *pvbox;
//GtkWidget *pBUT_Quit;
//GtkWidget *pBUT_Ok;
pwindow=gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(pwindow),"Menu thread !");
gtk_window_set_default_size(GTK_WINDOW(pwindow),200,320);
g_signal_connect(G_OBJECT(pwindow),"destroy",G_CALLBACK(gtk_main_quit),NULL);
/* GTKvbox */
pvbox=gtk_vbox_new(FALSE,0);
gtk_container_add(GTK_CONTAINER(pwindow),pvbox);
/* Menu */
pMenuBar=gtk_menu_bar_new();
pMenu=gtk_menu_new();
pMenuItem=gtk_menu_item_new_with_label("New !");
gtk_menu_shell_append(GTK_MENU_SHELL(pMenu),pMenuItem);
pMenuItem=gtk_menu_item_new_with_label("Open !");
gtk_menu_shell_append(GTK_MENU_SHELL(pMenu),pMenuItem);
pMenuItem=gtk_menu_item_new_with_label("Save !");
gtk_menu_shell_append(GTK_MENU_SHELL(pMenu),pMenuItem);
pMenuItem=gtk_menu_item_new_with_label("Close !");
gtk_menu_shell_append(GTK_MENU_SHELL(pMenu),pMenuItem);
pMenuItem=gtk_menu_item_new_with_label("Quit !");
g_signal_connect(G_OBJECT(pMenuItem),"activate",G_CALLBACK(gtk_main_quit),(GtkWidget*)pwindow);
gtk_menu_shell_append(GTK_MENU_SHELL(pMenu),pMenuItem);
pMenuItem=gtk_menu_item_new_with_label("Fichier");
gtk_menu_item_set_submenu(GTK_MENU_ITEM(pMenuItem),pMenu);
gtk_menu_shell_append(GTK_MENU_SHELL(pMenuBar),pMenuItem);
/* Menu to window */
gtk_box_pack_start(GTK_BOX(pvbox),pMenuBar,FALSE,FALSE,0);
gtk_widget_show_all(pwindow);
return EXIT_SUCCESS;
}
int main(int argc, char **argv)
{
//threads Initialisation…
g_thread_init(NULL);
//Initialisation GTK, GLUT...
gtk_init (&argc, &argv);
glutInit(&argc, argv);
//GTK Window Creation ...
menuInterface();
//threads activation ...
gdk_threads_enter();
//GL and Gtk loops
g_thread_create((GThreadFunc)opengl_thread,NULL,FALSE,NULL);
gtk_main ();
//quit...
gdk_threads_leave();
return 0;
}
Probleme solved, I forgot the method glutPostRedisplay() at the end of my scene.
It works now !!!
Great if you got it to work, normaly I don’t think you should mix the two together.
You should rewrite your openGL animation using only gtk with no glut functions.
Originally posted by Mao:
Hi !
I have made a little glut animation, with a triangle which rotates. And i wanted to put it with a gtk menu.
The probleme is, there is no more rotation. It seems to be, that gtk stop the opengl (glut) loop.
How can I make this animation working ?
I make it with gluut because, later I wanted to make some more complicated thing with it, and use de glui too.
I need to make an animation (glut), with a menu(gtk). I don’t very well gtk, and glut is for me the best to make a scene with interactions with the mouse and keyboard, use glui widgets, and etc…
Please help me.
[This message has been edited by nexusone (edited 04-30-2003).]
Originally posted by nexusone:
Great if you got it to work, normaly I don’t think you should mix the two together.
You should rewrite your openGL animation using only gtk with no glut functions.
Why not ? i had the feeling that GTK is fully objectoriented, and it will be too bad that it doesn’t works, just for de OS portability. GlutPostRedisplay was for me here a good help, why making a method to force a redisplay, when we don’t need it ?
It is practical, when glut should work with other interface, isn’t it ?
M@o