public ColourRGBA Trace(Ray r, Surface[] quads, Light[] lights, float c, ref float coef, ref Vector result, ref bool hitLight)
{
if (c < Config.Ray.MaxBounce)
{
Surface closest = null;
Vector normal = new Vector();
float dist = 0;
float closestDist = 0;
foreach (Surface quad in quads)
{
if (quad.Intersect(r, ref dist))
{
if (closest == null)
{
if (dist > 0)
{
closestDist = dist;
closest = quad;
}
}
else
{
if (dist > 0 && dist < closestDist)
{
closestDist = dist;
closest = quad;
}
}
}
}
if (closest != null)
{
//return closest.GetMat().GetColour();
{
//Bounce off the surface then just f**k off
//TODO: This is shit bro.
closest.m_dist = closestDist;
closest.m_lastRay = r;
normal = closest.CalculateSurfaceNormal();
//This is just some error check for when im adding things to the tracer.
if (normal == null)
{
Console.WriteLine("----------------------------------------");
Console.WriteLine(closest.ToString());
Console.WriteLine("This can't calculate the surface normal!");
Console.ReadKey();
Environment.Exit(1);
}
Ray ray = closest.Reflect(r.orgin, closest.CalculateSurfaceNormal(), closestDist, r);
if (ray == null)
{
Console.WriteLine("----------------------------------------");
Console.WriteLine(closest.ToString());
Console.WriteLine("This can not reflect!");
Console.ReadKey();
Environment.Exit(1);
}
Ray lsr = null;
//for each light we need to check if there is anything in the way the new ray orgin and the light.
//check to see if this position has a visable light.
foreach (Light ls in lights)
{
bool lightBlocker = false;
//check if anything is in the way
foreach (Surface s in quads)
{
float ld = 0;
Vector sl = (ls.pos - ray.orgin).Normalize();
lsr = new Ray(ray.orgin, sl);
if (s.Intersect(lsr, ref ld))
{
if (ld > 0.01)
{
lightBlocker = true;
break;
}
}
}
//check if there was a light blocker and if not add lighting to the ray point.
if (!lightBlocker)
{
//Get the distance to the light so we know if its hitting us.
//float lightPointDist = (float)SurfaceFunc.Vec3Distance(ray.orgin, ls.pos);
/*
* if (lightPointDist < 1000)
* {
* float lambert = 0;
* if (lsr != null)
* {
* lambert = lsr.dir.DotProduct(closest.CalculateSurfaceNormal()) * coef;
* }
* else
* {
* //TODO Error
* }
* //Lambert disfuseion
* result.m_x += lambert * ls.intesity.r * closest.GetMat().disfuse.r;
* result.m_y += lambert * ls.intesity.g * closest.GetMat().disfuse.g;
* result.m_z += lambert * ls.intesity.b * closest.GetMat().disfuse.b;
* }
*/
float lambert = lsr.dir.DotProduct(closest.CalculateSurfaceNormal()) * coef;
//float lambert = 1.0f;
//Lambert disfuseion
result.m_x += lambert * ls.intesity.r * closest.GetMat().disfuse.r;
result.m_y += lambert * ls.intesity.g * closest.GetMat().disfuse.g;
result.m_z += lambert * ls.intesity.b * closest.GetMat().disfuse.b;
}
coef *= closest.GetMat().reflect;
if (coef < 0.0f)
{
break;
}
}
ray.Trace(ray, quads, lights, c + 1, ref coef, ref result, ref hitLight);
return(new ColourRGBA(result, 255));
}
}
else
{
return(new ColourRGBA(result, 255));
}
}
return(null);
}
static void Main(string[] args)
{
Camera camera = new Camera();
camera.SetPositon(new Vector(0.00f, -10.0f, 1.0f));
camera.SetRotation();
if (camera.GetFov() != 45.0f)
{
camera.SetFov(45.0f);
}
SurfacePlane worldPlane = new SurfacePlane();
Material mat = new Material();
mat.disfuse = new ColourRGBA(255.0f, 125.0f, 136.0f, 255.0f);
//mat.disfuse = new ColourRGBA(1.0f, 1.0f, 1.0f, 1.0f);
mat.disfuse.Normalize();
mat.reflect = 0.1f;
worldPlane.SetMat(mat);
SurfaceSphere worldSphere = new SurfaceSphere();
Material smat = new Material();
smat.disfuse = new ColourRGBA(0.0f, 0.0f, 1.0f, 1.0f);
smat.reflect = 0.9f;
worldSphere.SetMat(smat);
SurfaceSphere worldSphere2 = new SurfaceSphere();
worldSphere2.pos.m_x = -2.0f;
worldSphere2.pos.m_y = -2.0f;
worldSphere2.pos.m_z = 2.0f;
SurfaceSphere worldSphere3 = new SurfaceSphere();
worldSphere3.pos.m_x = 2.0f;
worldSphere3.pos.m_y = -2.0f;
worldSphere3.pos.m_z = 2.0f;
SurfaceSphere worldSphere4 = new SurfaceSphere();
worldSphere4.pos.m_x = 0.0f;
worldSphere4.pos.m_y = 2.0f;
worldSphere4.pos.m_z = 2.0f;
Material smat2 = new Material();
smat2.disfuse = new ColourRGBA(0.5f, 1.0f, 0.5f, 1.0f);
//smat2.reflect = 0.5f;
Material smat3 = new Material();
smat3.disfuse = new ColourRGBA(0.5f, 0.5f, 0.5f, 1.0f);
worldSphere2.SetMat(smat2);
worldSphere3.SetMat(smat2);
worldSphere4.SetMat(smat3);
Surface[] Walls = new Surface[] { worldPlane, worldSphere, worldSphere2, worldSphere3 };
Console.WriteLine("Casting Rays");
Console.WriteLine("Casting: " + ((UInt64)(Width * Height) * rpp).ToString() + " rays!");
//Image to save
Bitmap img = new Bitmap(Width, Height);
Bitmap highestHits = new Bitmap(Width, Height);
//Cast the ray
bool hit = false;
bool exit = false;
float filmDist = 1.0f;
//Aspect ratio
float filmW = 1.0f;
float filmH = 1.0f;
if (Width > Height)
{
filmH = filmW * ((float)Height / (float)Width);
}
else if (Height > Width)
{
filmW = filmH * ((float)Width / (float)Height);
}
float halffilmW = 0.5f * filmW;
float halffilmH = 0.5f * filmH;
bool looped = false;
DateTime startTime = DateTime.Now;
Console.Write("Render Started: ");
Console.WriteLine(startTime.ToString());
UInt64 hc = 0;
UInt64 count = 0;
while (!hit && !exit)
{
if (!looped)
{
exit = true;
}
else
{
if (camera.GetPositon().m_y <= -100)
{
break;
}
else
{
Vector p = camera.GetPositon();
p.m_y -= 1;
camera.SetPositon(p);
}
camera.SetRotation();
}
Vector FilmCenter = camera.GetPositon() - filmDist * camera.m_rotation.CameraZ;
UInt64 thc = 0;
count++;
Console.Write("Count: " + count.ToString() + "\r");
UInt64 rayCount = 0;
float RayColourContrib = 1.0f / rpp;
float halfPixW = 0.5f / Width;
float halfPixH = 0.5f / Height;
float testRays = RayColourContrib * rpp;
Ray ray = new Ray();
//Start casting rays
for (int x = 0; x < Width; x++)
{
for (int y = 0; y < Height; y++)
{
//Work out where we are casting this ray from.
float filmX = -1.0f + 2.0f * ((float)x / (float)Width);;
float filmY = -1.0f + 2.0f * ((float)y / (float)Height);
//Vector result = new Vector(0.0f, 0.0f, 0.0f);
float a = 1.0f;
Vector rayColour = new Vector();
//build up our colour
for (UInt64 r = 0; r < rpp; r++)
{
//Jittering AA
float offX = filmX + Helpers.Rand.RandomBilateral() * halfPixW;
float offY = filmY + Helpers.Rand.RandomBilateral() * halfPixH;
Vector filmP = FilmCenter + offX * halffilmW * camera.m_rotation.CameraX + offY * halffilmH * camera.m_rotation.CameraY;
ray.orgin = camera.GetPositon();
ray.dir = (filmP - camera.GetPositon());
float coef = 1.0f;
Vector result = new Vector(0.0f, 0.0f, 0.0f);
bool hitLight = false;
//rayColour += RayColourContrib * (ray.Trace(ray, Walls, lights, 0, ref coef, ref result, ref hitLight).ColourToVector(ref a));
ray.Trace(ray, Walls, lights, 0, ref coef, ref result, ref hitLight);
rayColour += RayColourContrib * result;
rayCount++;
}
//ColourRGBA colour = ray.Trace(ray, Walls, 0, ref att, ref result);
//rayColour.Normalize
ColourRGBA colour = new ColourRGBA(rayColour, a);
if (!looped)
{
float p = (float)rayCount / (float)((UInt64)(Width * Height) * rpp);
Console.Write(((int)(p * 100)).ToString() + " perenct complete\r");
}
//Nothing intersects with this ray so black
if (colour == null)
{
//colour = new ColourRGBA(0.0f, 0.0f, 0.0f, 255.0f);
colour = Config.Ray.SkyColour;
}
else
{
//Correct the gamma.
/*
* colour.r = Lin2srgb(colour.r);
* colour.g = Lin2srgb(colour.g);
* colour.b = Lin2srgb(colour.b);
*/
//colour.Normalize();
colour.Scale(255);
colour.Clamp();
}
//Convert our colour to a colour windows C# understands
Color wColour = Color.FromArgb((int)colour.a, (int)colour.r, (int)colour.g, (int)colour.b);
//If its not black we hit something
if (colour.r != 0 || colour.g != 0 || colour.b != 0)
{
thc++;
}
img.SetPixel(x, y, wColour);
}
}
if (hc < thc)
{
hc = thc;
highestHits = img;
}
if (thc > 0)
{
//For when we are displaying the percent complete
if (!looped)
{
Console.WriteLine("");
//Console.Write("Hits: " + thc.ToString() + "_y_" + camera.GetPositon().m_y.ToString() + "\n");
Console.Write("Hits: " + thc.ToString() + "\n");
//worldSphere.pos.PrintVector();
Console.Write("\n");
}
else
{
Console.Write("Count: " + count.ToString() + " Hits: " + thc.ToString() + "\n");
}
img.Save("hit/hit_" + thc.ToString() + "_c_" + count.ToString() + ".bmp");
}
}
if (hit)
{
highestHits.Save("hit.bmp");
Console.WriteLine("Hit Something");
}
else
{
img.Save("shit.bmp");
}
DateTime endTime = DateTime.Now;
Console.WriteLine("Saved Image");
Console.Write("Image render completed in(h.m.s):");
Console.WriteLine((endTime - startTime).ToString());
Console.ReadKey();
}
