/// <summary>
/// Camera Setup
/// </summary>
/// <param name="image">Bitmap</param>
/// <param name="sfera">Primitives List</param>
public override void RenderTo(ref Bitmap image)
{
int imageWidth = image.Width;
int imageHeight = image.Height;
double aspectRatio = imageWidth / (double)imageHeight;
double tang = Math.Tan(fov * 0.5 * 3.141f / 180.0);
double height = 2 * nearPlane * tang;
double width = height * aspectRatio;
double widthPixel = width / imageWidth;
double heightPixel = height / imageHeight;
minimumPixelSizeForAdaptive = heightPixel / (double)Math.Pow(2.0, adaptiveDepth);
Vector3 w = -direction.GetNormalized();
u = -(up.cross(w).GetNormalized());
v = w.cross(u);
Vector3 c = Position - u * (float)(width * 0.5) - v * (float)(height * 0.5) + direction * nearPlane;
//Console.WriteLine(heightPixel);
//base.RenderInternal(ref image, c, (float)widthPixel, (float)heightPixel,sfera);
base.RenderInternal(ref image, ref c, (float)widthPixel, (float)heightPixel);
}
public Camera(Vector3 lookfrom, Vector3 lookat, Vector3 vup,
float vfov, float aspect, float apeture, float focus_dist,
float t0, float t1)
{
time0 = t0;
time1 = t1;
lens_radius = apeture / 2.0f;
float theta = vfov * (float)Math.PI / 180.0f;
float half_height = (float)Math.Tan(theta / 2.0f);
float half_width = half_height * aspect;
origin = lookfrom;
w = (lookfrom - lookat).unit_vector();
u = (Vector3.cross(vup, w)).unit_vector();
v = Vector3.cross(w, u);
lower_left = origin - half_width * focus_dist * u - half_height * focus_dist * v - focus_dist * w;
horizontal = 2.0f * half_width * focus_dist * u;
vertical = 2.0f * half_height * focus_dist * v;
}