// ------------------------------------------------------ render -------------------------------------------------------------------- //
void Scene::render(Image &img){
int w = img.width();
int h = img.height();
Vector right = ((center-eye).cross(up)).normalized(); // right vector
double pSize = up.length(); // pixel size as length of up vector
Point leftUp(center - (w/2)*pSize*right + (h/2)*pSize*up); // pixel left upper bound
double zBuffer[w][h];
cout << "eye: " << eye.x << "," << eye.y << "," << eye.z << endl;
cout << "center: " << center.x << "," << center.y << "," << center.z << endl;
cout << "up: " << up.x << "," << up.y << "," << up.z << endl;
cout << "right: " << right.x << "," << right.y << "," << right.z << endl;
cout << "viewSize: " << w << "," << h << endl;
cout << "leftUp: " << leftUp.x << "," << leftUp.y << "," << leftUp.z << endl;
cout << "pSize: " << pSize << endl;
cout << "maxRecursionDepth: " << maxRecursionDepth << endl;
cout << "superSamplingFactor: " << superSamplingFactor << endl;
cout << "apertureSamples: " << apertureSamples << endl;
cout << "apertureRadius: " << apertureRadius << endl;
Color color;
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
Point pixel = leftUp + (x*pSize*right) - (y*pSize*up); // go to correct x,y position
if (rendermode == phong || rendermode == gooch){
img(x,y) = superSample(pixel, right, pSize);
}
if (rendermode == normal){
Ray ray(eye, ((pixel + right*pSize/2 - up*pSize/2)-eye).normalized());
img(x,y) = traceNormal(ray);
}
if (rendermode == zbuffer){
Ray ray(eye, ((pixel + right*pSize/2 - up*pSize/2)-eye).normalized());
zBuffer[x][y] = traceZBuffer(ray);
}
}
}
if (rendermode == zbuffer){
for (int y = 0; y < h; y++){
for (int x = 0; x < w; x++){
color.set((-1*(zBuffer[x][y]-minZB)/(maxZB-minZB))+1);
color.clamp();
img(x,y) = color;
}
}
}
}
static void read_mac(char *ifname, n2n_mac_t mac_addr)
{
int _sock, res;
struct ifreq ifr;
macstr_t mac_addr_buf;
memset(&ifr, 0, sizeof(struct ifreq));
/* Dummy socket, just to make ioctls with */
_sock = socket(PF_INET, SOCK_DGRAM, 0);
strcpy(ifr.ifr_name, ifname);
res = ioctl(_sock, SIOCGIFHWADDR, &ifr);
if (res < 0)
{
perror("Get hw addr");
}
else
memcpy(mac_addr, ifr.ifr_ifru.ifru_hwaddr.sa_data, 6);
traceNormal("Interface %s has MAC %s",
ifname,
mac2str(mac_addr_buf, mac_addr));
close(_sock);
}
