public static void Main3()
{
int nx = 1280;
int ny = 640;
int ns = 16;
Vector3 lookfrom = new Vector3(-2, 2, 1);
Vector3 lookat = new Vector3(0, 0, -1);
Vector3 up = new Vector3(0, 1, 0);
RayCamera camera = new RayCamera(lookfrom, lookat, up, 35, (float)(nx) / (float)(ny));
HitList list = new HitList();
list.Add(new Sphere(new Vector3(0, 0, -1), 0.5f, new Lambertian(new Vector3(0.1f, 0.2f, 0.5f))));
list.Add(new Sphere(new Vector3(0, -100.5f, -1), 100, new Lambertian(new Vector3(0.8f, 0.8f, 0.0f))));
list.Add(new Sphere(new Vector3(1, 0, -1), 0.5f, new Metal(new Vector3(0.8f, 0.6f, 0.2f), 0.3f)));
list.Add(new Sphere(new Vector3(-1, 0, -1), 0.5f, new DielectricShlick(1.5f)));
list.Add(new Sphere(new Vector3(-1, 0, -1), -0.45f, new DielectricShlick(1.5f)));
Texture2D tex = ImageHelper.CreateImg(nx, ny);
for (int j = ny - 1; j >= 0; --j)
{
for (int i = 0; i < nx; ++i)
{
Vector3 color = Vector3.zero;
for (int k = 0; k < ns; ++k)
{
float u = (float)(i + Random.Range(0f, 1f)) / (float)(nx);
float v = (float)(j + Random.Range(0f, 1f)) / (float)(ny);
Ray r = camera.GetRay(u, v);
color += RayCast(r, list, 0);
}
color = color / (float)(ns);
color.x = Mathf.Sqrt(color.x);
color.y = Mathf.Sqrt(color.y);
color.z = Mathf.Sqrt(color.z);
ImageHelper.SetPixel(tex, i, j, color);
}
}
ImageHelper.SaveImg(tex, "Img/chapter10_3.png");
Debug.Log("Chapter 10_3 done");
}
public static void Main()
{
int nx = 1280;
int ny = 640;
int ns = 16;
RayCamera camera = new RayCamera();
float R = Mathf.Cos(Mathf.PI / 4);
HitList list = new HitList();
list.Add(new Sphere(new Vector3(-R, 0, -1), R, new Lambertian(new Vector3(0f, 0f, 1f))));
list.Add(new Sphere(new Vector3(R, 0, -1), R, new Lambertian(new Vector3(1f, 0f, 0f))));
Texture2D tex = ImageHelper.CreateImg(nx, ny);
for (int j = ny - 1; j >= 0; --j)
{
for (int i = 0; i < nx; ++i)
{
Vector3 color = Vector3.zero;
for (int k = 0; k < ns; ++k)
{
float u = (float)(i + Random.Range(-1f, 1f)) / (float)(nx);
float v = (float)(j + Random.Range(-1f, 1f)) / (float)(ny);
Ray r = camera.GetRay(u, v);
color += RayCast(r, list, 0);
}
color = color / (float)(ns);
color.x = Mathf.Sqrt(color.x);
color.y = Mathf.Sqrt(color.y);
color.z = Mathf.Sqrt(color.z);
ImageHelper.SetPixel(tex, i, j, color);
}
}
ImageHelper.SaveImg(tex, "Img/chapter10_1.png");
Debug.Log("Chapter 10_1 done");
}
