private static unsafe void RenderScanLine(object data)
{
RaytracerData raytracerData = data as RaytracerData;
for (int x = raytracerData.X0; x < raytracerData.X1; x++)
{
//x = 799;
//raytracerData.Y = 655;
Vector3d raydirection = raytracerData.Camera.GetRayDirection(x, raytracerData.Y);
Vector3d rayposition = raytracerData.Camera.Position;
IIntersectionResult intersectionResult = raytracerData.Scene.GetNearestObjectIntersection(raydirection, rayposition);
Color color = Color.Black;
if (intersectionResult != null)
{
color = intersectionResult.Object.GetColor(raydirection, intersectionResult, raytracerData.Scene);
double z = raytracerData.Camera.Direction.Dot(intersectionResult.Intersection);
raytracerData.DepthBuffer[raytracerData.Y, x] = z;
}
byte *pixelPointer = raytracerData.ScanLine + x * 3;
pixelPointer[0] = color.B;
pixelPointer[1] = color.G;
pixelPointer[2] = color.R;
}
}
public unsafe void Render()
{
Scene.UpdateVisibleObjects(Camera);
RenderTarget result = new RenderTarget(_screenResolutionX, _screenResolutionY);
//Bitmap result = new Bitmap(_screenResolutionX, _screenResolutionY, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
Rectangle rect = new Rectangle(0, 0, result.ColorBuffer.Bitmap.Width, result.ColorBuffer.Bitmap.Height);
System.Drawing.Imaging.BitmapData bmpData = result.ColorBuffer.Bitmap.LockBits(rect, System.Drawing.Imaging.ImageLockMode.WriteOnly, result.ColorBuffer.Bitmap.PixelFormat);
byte *scan0 = (byte *)bmpData.Scan0.ToPointer();
for (int y = 0; y < _screenResolutionY; y++)
{
byte *scanLine = scan0 + y * bmpData.Stride;
RaytracerData raytracerData = new RaytracerData()
{
X0 = 0,
X1 = _screenResolutionX,
Y = y,
Camera = Camera,
Scene = Scene,
ScanLine = scanLine,
DepthBuffer = result.DepthBuffer
};
if (_renderDOF)
{
RenderScanLineDOF(raytracerData);
}
else
{
RenderScanLine(raytracerData);
}
RenderProgress?.Invoke((float)y / (float)_screenResolutionY);
}
result.ColorBuffer.Bitmap.UnlockBits(bmpData);
RenderComplete?.Invoke(result);
}
private static unsafe void RenderScanLineDOF(object data)
{
RaytracerData raytracerData = data as RaytracerData;
Random random = new Random();
for (int x = raytracerData.X0; x < raytracerData.X1; x++)
{
AverageColor averageColor = new AverageColor();
Vector3d focalPoint = raytracerData.Camera.Position + raytracerData.Camera.GetRayDirection(x, raytracerData.Y) * raytracerData.Camera.FocalLength;
Vector3d ws0 = raytracerData.Camera.ScreenSpaceToWorldSpace(x - 5, raytracerData.Y - 5);
Vector3d ws1 = raytracerData.Camera.ScreenSpaceToWorldSpace(x + 5, raytracerData.Y + 5);
//Vector3d ws0 = raytracerData.Camera.ScreenSpaceToWorldSpace(x, raytracerData.Y);
//Vector3d ws1 = raytracerData.Camera.ScreenSpaceToWorldSpace(x, raytracerData.Y);
Vector3d range = ws1 - ws0;
/*
* for (int i = 0; i < 32; i++)
* {
* double rand = (double)random.NextDouble();
* Vector3d randomPixelWorldSpace = ws0 + rand * range;
* Vector3d rayDirection = (focalPoint - randomPixelWorldSpace).Normalize();
*
* IntersectionResult intersectionResult = raytracerData.Scene.GetNearestObjectIntersection(rayDirection, randomPixelWorldSpace);
*
* Color color = Color.Black;
*
* if (intersectionResult.Object != null)
* {
* color = intersectionResult.Object.GetColor(rayDirection, intersectionResult.Intersection, raytracerData.Scene);
* }
*
* bool a = averageColor.Add(color);
*
* if (a)
* {
* a = false;
* }
* }
*/
for (int yy = raytracerData.Y - 3; yy < raytracerData.Y + 3; yy++)
{
for (int xx = x - 3; xx < x + 3; xx++)
{
Vector3d pixelWorldSpace = raytracerData.Camera.ScreenSpaceToWorldSpace(xx, yy);
Vector3d rayDirection = (focalPoint - pixelWorldSpace).Normalize();
//Vector3d raydirection = raytracerData.Camera.GetRayDirection(x, raytracerData.Y);
//Vector3d rayposition = raytracerData.Camera.Position;
IIntersectionResult intersectionResult = raytracerData.Scene.GetNearestObjectIntersection(rayDirection, pixelWorldSpace);
Color color = Color.Black;
if (intersectionResult != null)
{
color = intersectionResult.Object.GetColor(rayDirection, intersectionResult, raytracerData.Scene);
}
averageColor.Add(color);
}
}
Color finalColor = averageColor.Color;
//result.SetPixel(x, y, color);
byte *pixelPointer = raytracerData.ScanLine + x * 3;
pixelPointer[0] = finalColor.B;
pixelPointer[1] = finalColor.G;
pixelPointer[2] = finalColor.R;
}
}
