private void LinearScanner(object o)
{
ScannerConfig config = (ScannerConfig)o;
for (int j = config.h - 1; j >= 0; j--)
{
for (int i = 0; i < config.w; i++)
{
SColor color = mode == Mode.Diffusing
? Diffusing(camera.CreateRay(
(i + Random.Get()) * recip_width,
(j + Random.Get()) * recip_height), world, 0)
: NormalMap(camera.CreateRay(
(i + Random.Get()) * recip_width,
(j + Random.Get()) * recip_height), world);
SetPixel(config.w - i - 1, config.h - j - 1, color);
}
}
Form1.main.BeginInvoke(new Action(() => { Form1.main.ShowTips(); }));
}
public Ray CreateRay(double x, double y)
{
//在下面声明射线对象的时候赋予参数，一个在时间0到时间1内的随机时间。
if (radius == 0.0)
{
return(new Ray(position, lowLeftCorner + x * horizontal + y * vertical - position, time0 + Random.Get() * (time1 - time0)));
}
Vector3D rd = radius * GetRandomPointInUnitDisk();
Vector3D offset = rd.X * u + rd.Y * v;
return(new Ray(position + offset, lowLeftCorner + x * horizontal + y * vertical - position - offset, time0 + Random.Get() * (time1 - time0)));
}
public static Vector3D GetRandomPointInUnitDisk()
{
Vector3D p = 2.0 * new Vector3D(Random.Get(), Random.Get(), 0) - new Vector3D(1, 1, 0);
return(p.GetNormalizeVector() * Random.Get());
}
public Vector3D GetRandomPointInUnitSphere()
{
Vector3D p = new Vector3D(Random.Get(), Random.Get(), Random.Get()) * 2.0 - Vector3D.one;
return(p.GetNormalizeVector() * Random.Get());
}