void MyCamera::rotateDn(float an){
///////////////////////Anton
glm::vec3 view_vec = viewC - eyePositionE;
glm::vec3 crossV = glm::cross(view_vec,upVectorU);
glm::mat4 rotm = glm::rotate(an,crossV);
////////////////////////////
glm::vec4 eyen(1.0);
eyen[0]=eyePositionE[0];
eyen[1]=eyePositionE[1];
eyen[2]=eyePositionE[2];
eyen[3]=1;
eyen = rotm*eyen;
glm::vec4 upn(1.0);
upn[0]=upVectorU[0];
upn[1]=upVectorU[1];
upn[2]=upVectorU[2];
upn[3]=1;
upn = rotm*upn;
eyePositionE[0]=eyen[0];
eyePositionE[1]=eyen[1];
eyePositionE[2]=eyen[2];
upVectorU[0]=upn[0];
upVectorU[1]=upn[1];
upVectorU[2]=upn[2];
}
void MyCamera::rotateY(float an){
glm::mat4 rotm = glm::rotate(an, glm::vec3(0.0,1.0,0.0));
glm::vec4 eyen(1.0);
eyen[0]=eyePositionE[0];
eyen[1]=eyePositionE[1];
eyen[2]=eyePositionE[2];
eyen[3]=1;
eyen = rotm*eyen;
glm::vec4 upn(1.0);
upn[0]=upVectorU[0];
upn[1]=upVectorU[1];
upn[2]=upVectorU[2];
upn[3]=1;
upn = rotm*upn;
eyePositionE[0]=eyen[0];
eyePositionE[1]=eyen[1];
eyePositionE[2]=eyen[2];
upVectorU[0]=upn[0];
upVectorU[1]=upn[1];
upVectorU[2]=upn[2];
}
int main(int argc, char const *argv[])
{
int n; // number of lions
int k; // number of times each lion is going to eat
pid_t *pid;
int status;
int i,j; // iterating variables
int curr_pit; // stores the current pit from which the lion is going to eat
int check; // stores the pit that will be available;
// read the number of lions form arguments
if(argc < 3)
{
perror("Didn't provide the number of lions");
exit(0);
}
// Read the number of lions
n = atoi(argv[1]);
// Read the number of times each lion is going to eat
k = atoi(argv[2]);
pid = (pid_t*)malloc(n*sizeof(pid_t));
// Wait for the start signal from the Ranger
// Create Semaphores
sem_mut = semget(MUTEX, 1, IPC_CREAT|0666);
sem_lion = semget(LION, N_PITS + 1, IPC_CREAT|0666);
sem_jackal = semget(JACKAL, N_PITS + 1, IPC_CREAT|0666);
sem_ranger = semget(RANGER, N_PITS + 1, IPC_CREAT|0666);
sem_pit = semget(PIT, N_PITS + 1, IPC_CREAT|0666);
sem_mem = semget(NEXT_PIT, 1, IPC_CREAT|0666);
sem_lion_init = semget(INIT_LION, 1, IPC_CREAT|0666);
semctl(sem_lion_init,0,SETVAL,0);
down(sem_lion_init,0);
printf("Lion Started %d %d\n",n,k);
// fork n lions
for(i = 0; i < n; i++)
{
pid[i] = fork();
if(pid[i] == 0)
{
srand(time(NULL));
// forked process
// actual lion code
id = i;
// chosen a random pit
curr_pit = rand()%N_PITS + 1;
for(j = 0; j < k; j++)
{
check = check_availability(curr_pit);
if(check == -1)
{
// no pit available
curr_pit = (curr_pit - 1 + N_PITS - 1)%N_PITS + 1;
printf("%s %d in wait queue of meat-pit %d\n",SELF,id,curr_pit);
// block in the waiting queue
down(sem_self,0);
curr_pit = semctl(sem_mem,0,GETVAL,0);
j--;
continue;
}
//Current consumer will eat from meat-pit number 'check'
curr_pit = check;
// Take control
printf("Before::Number of %s in meat-pit %d = %d\t\t\t%s %d\n",SELF,curr_pit,semctl(sem_self,curr_pit,GETVAL,0),SELF,id);
up(sem_self,curr_pit);
printf("After::Number of %s in meat-pit %d = %d\t\t\t%s %d\n",SELF,curr_pit,semctl(sem_self,curr_pit,GETVAL,0),SELF,id);
printf("%s %d in control of meat-pit %d\n\n\n",SELF,id,curr_pit);
// Consume
down(sem_pit,curr_pit);
printf("\t\t\t\t\t Meat in Pits %d %d %d\n",semctl(sem_pit, 1, GETVAL, 0),semctl(sem_pit, 2, GETVAL, 0),semctl(sem_pit, 3, GETVAL, 0));
sleep(2);
// Check if last consumer to leave the pit
printf("Number of %s in meat-pit %d = %d\t\t\t%s %d\n",SELF,curr_pit,semctl(sem_self,curr_pit,GETVAL,0),SELF,id);
if(semctl(sem_self,curr_pit,GETVAL,0) > 1)// || semctl(sem_pit,curr_pit,GETVAL,0) == 0)
{
// do not send signal and continue
down(sem_self,curr_pit);
continue;
}
printf("Down karega %s %d\n",SELF,id);
down(sem_self,curr_pit);
// down(sem_mut,0);
printf("%s %d left meat-pit %d\n",SELF,id,curr_pit);
// send signals
// set shared memory to current pit
semctl(sem_mem,0,SETVAL,curr_pit);
// wake up ranger and rival
if(semctl(sem_ranger,0,GETVAL,0) == 0) // wake up ranger only when sleeping
up(sem_ranger,0);
if(semctl(sem_rival, 0, GETNCNT, 0) == 0)
printf("Koi uthane ko nahi hai %s %d\n",SELF,id);
printf("\t\t\tNumber of Jackals waiting %d\n",semctl(sem_jackal, 0, GETNCNT, 0));
printf("\t\t\tNumber of Lions waiting %d\n",semctl(sem_lion, 0, GETNCNT, 0));
upn(sem_rival,0,semctl(sem_rival, 0, GETNCNT, 0));
printf("%s %d giving signal to wait queue of all meat-pit\n",SELF,id);
curr_pit = rand()%N_PITS + 1;
// up(sem_mut,0);
}
exit(0);
}
else if(pid[i] < 0)
{
perror("Fork error!!");
exit(0);
}
}
for(i = 0; i < n; i++)
waitpid(pid[i],&status,0);
free(pid);
return 0;
}