bool Ray::getClosestSphere(std::list<Sphere*>* sphereList, Sphere** closestSphere, coord_t* closestSpherePoint, Sphere** ignoreSphere) {
bool hit_buffer = false;
float t_buffer, t_min;
for (std::list<Sphere*>::iterator p = (*sphereList).begin(); p!=(*sphereList).end(); p++) {
if ((*p)!=(*ignoreSphere)) {
if ((*p)->intersectsWithRay(this, &t_buffer)) {
if (hit_buffer==false) {
t_min = t_buffer;
hit_buffer = true;
*closestSphere = *p;
}
else if (t_buffer < t_min) {
t_min = t_buffer;
*closestSphere = *p;
}
}
}
}
if (hit_buffer==true) {
*closestSpherePoint = point_on_straight(&start_point, &direction, t_min);
return true;
}
else {
return false;
}
}
void Camera::makeSnapShot(std::list<Sphere*>* sphereList, Light* light, int ref_max, bool show) {
coord_t ray_dir_temp, ray_dir, ray_dir_projection_help, focal_point;
focal_point = point_on_straight(&optical_center, &direction, -focal_length);
rgb_value_t pixel_temp;
Sphere* dummy_pointer = NULL;
Ray privateRay(&focal_point, &focal_point);
omp_set_num_threads(2);
#pragma omp parallel for firstprivate(privateRay, ray_dir_temp, ray_dir, pixel_temp, ray_dir_projection_help) schedule(static,1)
for (int i=0; i<sensor_height_px; i++) {
for (int j=0; j<sensor_width_px; j++) {
//initial Koordinatenursprung
ray_dir.y = j*px_width -sensor_width_physical/2;
ray_dir.z = i*px_height -sensor_height_physical/2;
ray_dir.x = 0.0;
//rotation um y achse
ray_dir_projection_help = direction;
ray_dir_projection_help.y= 0.0;
ray_dir_projection_help = normalize_vect(&ray_dir_projection_help);
if (ray_dir_projection_help.x < 0.0) ray_dir_projection_help.x=-ray_dir_projection_help.x;
ray_dir_temp.x = -ray_dir.z*ray_dir_projection_help.z;
ray_dir_temp.y = ray_dir.y;
ray_dir_temp.z = ray_dir.z*ray_dir_projection_help.x;
//rotation um z achse
ray_dir_projection_help = direction;
ray_dir_projection_help.z= 0.0;
ray_dir_projection_help = normalize_vect(&ray_dir_projection_help);
ray_dir.x = ray_dir_temp.x*ray_dir_projection_help.x - ray_dir_temp.y*ray_dir_projection_help.y;
ray_dir.y = ray_dir_temp.x*ray_dir_projection_help.y + ray_dir_temp.y*ray_dir_projection_help.x;
ray_dir.z = ray_dir_temp.z;
//ray_dir = ray_dir_temp;
//translation to optical center
ray_dir = add_coord(&ray_dir, &optical_center);
ray_dir = subtract_coord(&ray_dir, &focal_point);
privateRay.setStartPoint(&optical_center);
privateRay.setDirection(&ray_dir);
pixel_temp = privateRay.raytrace(sphereList, light, &dummy_pointer, ref_max);
image_matrix->at<Vec3b>(i,j)[2] = pixel_temp.r;
image_matrix->at<Vec3b>(i,j)[1] = pixel_temp.g;
image_matrix->at<Vec3b>(i,j)[0] = pixel_temp.b;
}
}
if (show) {
namedWindow( "Raytrace", CV_WINDOW_AUTOSIZE );
imshow("Raytrace", *image_matrix);
std::cout << "BLA" << std::endl;
cvWaitKey(0);
} else {
//imwrite("raytrace.jpg", image_matrix);
}
}
