protected override Task Handle(RenderSceneCommand request, CancellationToken cancellationToken)
{
var shapes = new List <IBasicShape>();
shapes.AddRange(request.Scene.Shapes.Select(ShapeFactory.MapApiToDomain));
var world = new World(shapes, LightFactory.MapApiToDomain(request.Scene.LightSource));
var camera = CameraFactory.MapApiToDomain(request.Scene.Camera);
// Render image
using var canvas = new System.Drawing.Bitmap(camera.HorizontalSize, camera.VerticalSize);
for (int y = 0; y < camera.VerticalSize - 1; y++)
{
if (cancellationToken.IsCancellationRequested)
{
break;
}
for (int x = 0; x < camera.HorizontalSize - 1; x++)
{
if (cancellationToken.IsCancellationRequested)
{
break;
}
var ray = camera.GetRay(x, y);
Color color = Lighting.CalculateColorWithPhongReflection(world, ray);
canvas.SetPixel(x, y, color.Simplify(255));
}
}
if (!cancellationToken.IsCancellationRequested)
{
canvas.Save(request.FilePath);
}
return(cancellationToken.IsCancellationRequested ? Task.FromCanceled(cancellationToken) : Task.CompletedTask);
}