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/*
Ho scoperto che le glut fanno cacare...però va aiutano
*/
#include <stdio.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>
#include <malloc.h>
#include <pthread.h>
#include <semaphore.h>
pthread_mutex_t mtx; //credo serva...
void init();
void display1();
void display2();
void keyboardEvent1(unsigned char key, int x, int y);
void keyboardEvent2(unsigned char key, int x, int y);
void* window1(void* arg);
void* window2(void* arg);
int teta1;
int teta2;
int main(int argc, char** argv) {
/*
Inizializzo il sistema...
*/
glutInit(&argc,argv);
pthread_t th_1, th_2;
pthread_create(&th_1,NULL,&window1,NULL);
pthread_create(&th_2,NULL,&window2,NULL);
pthread_join(th_1,NULL);
pthread_join(th_2,NULL);
return 0;
}
void init1() {
teta1 = 0;
glClearColor(0.0,0.0,0.0,0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0,1.0,0.0,1.0,-1.0,1.0);
}
void init2() {
teta2 = 0;
glClearColor(0.0,0.0,0.0,0.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0.0,1.0,0.0,1.0,-1.0,1.0);
}
void display1() {
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0,1.0,1.0);
GLfloat pt[] = {
0.25,0.25,0.0,
0.75,0.75,0.0
};
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3,GL_FLOAT,0,pt);
GLubyte index[] = {0,1};
glMatrixMode(GL_MODELVIEW);
glTranslatef(0.5,0.5,0.0);
glRotatef((GLfloat)teta1,0.0,0.0,1.0);
glTranslatef(-0.5,-0.5,0.0);
glDrawElements(GL_LINES,2,GL_UNSIGNED_BYTE,index);
glLoadIdentity();
glutSwapBuffers();
}
void display2() {
glClear(GL_COLOR_BUFFER_BIT);
glColor3f(1.0,1.0,1.0);
GLfloat pt[] = {
0.25,0.25,0.0,
0.75,0.75,0.0
};
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3,GL_FLOAT,0,pt);
GLubyte index[] = {0,1};
glMatrixMode(GL_MODELVIEW);
glTranslatef(0.5,0.5,0.0);
glRotatef((GLfloat)teta2,0.0,0.0,1.0);
glTranslatef(-0.5,-0.5,0.0);
glDrawElements(GL_LINES,2,GL_UNSIGNED_BYTE,index);
glLoadIdentity();
glutSwapBuffers();
}
void keyboardEvent1(unsigned char key, int x, int y) {
switch(key) {
case 'a':
teta1 = (teta1 + 5)%360;
glutPostRedisplay();
break;
case 'd':
teta1 = (teta1 - 5)%360;
glutPostRedisplay();
break;
}
}
void keyboardEvent2(unsigned char key, int x, int y) {
switch(key) {
case 'a':
teta2 = (teta2 + 5)%360;
glutPostRedisplay();
break;
case 'd':
teta2 = (teta2 - 5)%360;
glutPostRedisplay();
break;
}
}
void* window1(void* arg) {
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize(800,600);
glutInitWindowPosition(100,100);
glutCreateWindow("Window 1");
init1();
glutDisplayFunc(&display1);
glutKeyboardFunc(&keyboardEvent1);
glutMainLoop();
}
void* window2(void* arg) {
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize(800,600);
glutInitWindowPosition(100,100);
glutCreateWindow("Window 2");
init2();
glutDisplayFunc(&display2);
glutKeyboardFunc(&keyboardEvent2);
glutMainLoop();
}
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