public void RenderWeek1Parallel(int width, int height, int samples)
{
var img = RayTrace1.RenderParallelFor(width, height, samples);
}
private static void Run(Options options)
{
//var extOutput =
Func <RayImage, Stream, bool> encoder = null;
string filename = null;
// if output not set, use default output filename.
if (string.IsNullOrWhiteSpace(options.Output))
{
filename = "image.bmp";
}
else
{
filename = options.Output;
}
// TODO: implement encoders as a proper interface with factory methods instead of this switch.
//var ext = string.IsNullOrWhiteSpace(options.Output) ? string.Empty:
var ext = Path.GetExtension(filename).ToUpperInvariant();
switch (ext)
{
case ".TGA":
encoder = (r, s) => r.WriteTga(s);
break;
case ".PPM":
encoder = (r, s) => r.WritePpm(s);
break;
case ".BMP":
encoder = (r, s) => r.WriteBmp(s);
break;
default:
encoder = (r, s) => r.WriteBmp(s);
filename += ".bmp";
break;
}
// code.
var watch = new Stopwatch();
watch.Start();
// render.
RayImage img;
//var img = RayTrace1.Render(options.Width, options.Height, options.Samples);
if (options.Parallel)
{
img = RayTrace1.RenderParallelFor(options.Width, options.Height, options.Samples);
}
else
{
img = RayTrace1.Render(options.Width, options.Height, options.Samples);
}
watch.Stop();
// remember if the file exists before opening it.
var flagExists = File.Exists(filename);
// save.
using (var f = File.OpenWrite(filename))
{
encoder(img, f);
// in case new output is smaller than the last rendered image, trunc the rest.
if (flagExists)
{
f.SetLength(f.Position);
}
}
// done message.
Console.WriteLine($"Image '{filename}' rendered in {watch.ElapsedMilliseconds}ms.");
}