68 lines
1.2 KiB
C++
68 lines
1.2 KiB
C++
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <math.h>
|
|
#include <sys/types.h>
|
|
#include <unistd.h>
|
|
|
|
#include <GL/gl.h>
|
|
#include <GL/glu.h>
|
|
|
|
#include "Starfield.h"
|
|
|
|
Starfield::Starfield()
|
|
{
|
|
m_last_ticks = 0;
|
|
srand(time(NULL) + getpid());
|
|
}
|
|
|
|
Starfield::~Starfield()
|
|
{
|
|
}
|
|
|
|
bool Starfield::expose (GnomeScreensaver & gs)
|
|
{
|
|
if (m_last_ticks == 0)
|
|
m_last_ticks = gs.getTicks();
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
glViewport(0, 0, gs.getWidth(), gs.getHeight());
|
|
|
|
glPushMatrix();
|
|
glTranslatef(0, 0, -30);
|
|
m_logobox.draw();
|
|
glPopMatrix();
|
|
|
|
m_last_ticks = gs.getTicks();
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Starfield::configure (GnomeScreensaver & gs)
|
|
{
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
gluPerspective(60.0, gs.getAspectRatio(), 0.01, 1000.0);
|
|
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
gluLookAt(0, 0, 0, 0, 0, -1, 0, 1, 0);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Starfield::update (GnomeScreensaver & gs)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
void Starfield::getRandomAxis(float (*axis)[3])
|
|
{
|
|
double alpha = rand() / (double)RAND_MAX * 2.0 * M_PI;
|
|
double beta = rand() / (double)RAND_MAX * M_PI;
|
|
(*axis)[0] = cos(alpha) * sin(beta);
|
|
(*axis)[1] = sin(alpha) * sin(beta);
|
|
(*axis)[2] = cos(beta);
|
|
}
|
|
|