void Camera::RenderPath(Scene &scn, int n) {
RayTrace rayTrace(scn);
for (int y = 0; y < _img.YRes; y++) {
for (int x = 0; x < _img.XRes; x++) {
// compute the primary ray
Vector3 cy;
cy.Cross(_worldMatrix.c, _worldMatrix.b);
Vector3 cx = cy / pow(cy.Magnitude(), 2);
cy.Cross(cx, _worldMatrix.c);
float hfov = 2.f * atanf(_aspect * tanf(_verticalFOV / 2.f));
float cw = 2.f * tanf(hfov/2.f);
float ch = cw / _aspect;
Ray ray;
ray.Origin = _worldMatrix.d;
ray.Direction =
_worldMatrix.c + ((float)(x + 0.5f) / (float)_img.XRes - 0.5f) * cw * cx +
((float)(y + 0.5f)/(float)_img.YRes - 0.5f) * ch * cy;
ray.type = Ray::PRIMARY;
// shoot the primary ray
Intersection hit;
if (x > 124 && x <= 140 && y == _img.YRes - 495 ) {
// Color white = Color::WHITE;
// std::cout << "debug pixel" << std::endl;
// _img.SetPixel(x, y, white.ToInt());
// continue;
}
rayTrace.TraceRay(ray, hit);
if (n != -1) {
Color c;
c.FromInt(_img.GetPixel(x, y));
Color avg = Color::BLACK;
avg.AddScaled(c, n - 1);
avg.Add(hit.Shade);
avg.Scale(1.0f / n);
_img.SetPixel(x, y, avg.ToInt());
}
else _img.SetPixel(x, y, hit.Shade.ToInt());
}
}
}
int main(int argc,char **argv) {
if (FILE_SEP == 0) fSEP = "\\";
APP_PATH = argv[0];
string::size_type i = APP_PATH.find_last_of(fSEP);
if (i != string::npos) APP_PATH.erase(i+1);
if (argc < 2 || argc > 5) {
usage();
}
// Create scene
int color;
int xSize = 80;
int ySize = 60;
Scene scn;
// used photoshop color spectrum to select colors
Color c = Color::BLACK;
if (strcmp(argv[1], "cloud") == 0) {
CloudTexture cloud = CloudTexture();
c.FromInt(0xCCE5FF);
scn.setTexture(&cloud);
} else if (strcmp(argv[1], "wood") == 0) {
c.FromInt(0x7906131);
WoodTexture wood = WoodTexture();
scn.setTexture(&wood);
} else if (strcmp(argv[1], "marble") == 0) {
c.FromInt(0xb2daed);
MarbleTexture marble = MarbleTexture(40.0f);
scn.setTexture(&marble);
} else if (strcmp(argv[1], "lava") == 0) {
c.FromInt(0x8e1b1b);
CellTexture latex = CellTexture(10.0f, 5550, WorleyNoise::MANHATTAN, WorleyNoise::D3);
scn.setTexture(&latex);
} else if (strcmp(argv[1], "cell") == 0) {
c.FromInt(0xc99968);
CellTexture gro = CellTexture(1.0f, 1305, WorleyNoise::EUCLIDIAN, WorleyNoise::D1);
scn.setTexture(&gro);
} else {
usage();
}
if (argc == 3) {
color = checkColor(argv[2]);
c.FromInt( color );
} else if (argc == 4) {
xSize = checkSize(argv[2]);
ySize = checkSize(argv[3]);
} else if (argc == 5) {
color = checkColor(argv[2]);
c.FromInt( color );
xSize = checkSize(argv[3]);
ySize = checkSize(argv[4]);
}
scn.setColor(c);
//Render image
scn.SetResolution(xSize,ySize);
scn.Render();
concat = APP_PATH + "texture.bmp";
scn.SaveBitmap(concat.c_str());
}