void DrawParticles(R3Scene *scene)
{
// Get current time (in seconds) since start of execution
double current_time = GetTime();
static double previous_time = 0;
static double time_lost_taking_videos = 0; // for switching back and forth
// between recording and not
// recording smoothly
// program just started up?
if (previous_time == 0) previous_time = current_time;
// time passed since starting
double delta_time = current_time - previous_time;
if (save_video) { // in video mode, the time that passes only depends on the frame rate ...
delta_time = VIDEO_FRAME_DELAY;
// ... but we need to keep track how much time we gained and lost so that we can arbitrarily switch back and forth ...
time_lost_taking_videos += (current_time - previous_time) - VIDEO_FRAME_DELAY;
} else { // real time simulation
delta_time = current_time - previous_time;
}
// Update particles
UpdateParticles(scene, current_time - time_lost_taking_videos, delta_time, integration_type);
// Generate new particles
GenerateParticles(scene, current_time - time_lost_taking_videos, delta_time);
// Render particles
if (show_particles) RenderParticles(scene, current_time - time_lost_taking_videos, delta_time);
// Remember previous time
previous_time = current_time;
}
void* ParticleGroup::GenerateParticle()
{
return GenerateParticles(1);
}