public void SetUpCamera(Vector3d eye, Vector3d lookAt, Vector3d up)
{
Eye = eye;
LookAt = lookAt;
Up = up;
ComputeUVW();
}
public override RGBColor F(ShadeRec shadeRec, Vector3d wi, Vector3d wo)
{
RGBColor L = new RGBColor();
double NdotWi = Vector3d.Dot(shadeRec.Normal, wi);
Vector3d r = (-wi + (Vector3d)shadeRec.Normal * NdotWi * 2);
double RdotWo = Vector3d.Dot(r, wo);
if (RdotWo > 0)
{
L = CS*KS*Math.Pow(RdotWo, Exp);
}
return L;
}
public ShadeRec(World world)
{
HasHitObject = false;
Hitpoint = new Point3d();
Normal = new Normal();
LocalHitPoint = new Point3d();
Ray=new Ray();
Depth = 0;
Direction = new Vector3d();
T = 0;
//Chapter 3 only
Color = new RGBColor(0, 0, 0); //Black
World = world;
}
public void ComputeUVW()
{
w = Eye - LookAt;
w.Normalize();
u = Vector3d.Cross(Up, w);
v = Vector3d.Cross(w, u);
if (Eye.X == LookAt.X && Eye.Z == LookAt.Z && Eye.Y > LookAt.Y)
{ // camera looking vertically down
u = new Vector3d(0, 0, 1);
v = new Vector3d(1, 0, 0);
w = new Vector3d(0, 1, 0);
}
if (Eye.X == LookAt.X && Eye.Z == LookAt.Z && Eye.Y < LookAt.Y)
{ // camera looking vertically up
u = new Vector3d(1, 0, 0);
v = new Vector3d(0, 0, 1);
w = new Vector3d(0, -1, 0);
}
}
public static void Build14_21(World world)
{
world.ViewPlane = new ViewPlane();
world.ViewPlane.HRes = 400;
world.ViewPlane.VRes = 400;
world.ViewPlane.PixelSize = 1;
world.ViewPlane.Gamma = 1;
//world.ViewPlane.SamplesCount = 25;
world.ViewPlane.Sampler = new Hammersley(1, 16);
world.BackgroundColor = new RGBColor(0, 0, 0);
world.Tracer = new RayCast(world);
world.AmbientLight=new Ambient();
PinholeCamera pinholeCamera = new PinholeCamera(850);
pinholeCamera.SetUpCamera(
new Vector3d(0, 0, 500),
new Vector3d(5, 0, 0));
world.Camera = pinholeCamera;
Point pointLight = new Point();
pointLight.Location = new Vector3d(100, 50, 150);
pointLight.LightScale = 3;
world.AddLight(pointLight);
//Sphere 1
Matte matte1 = new Matte();
matte1.KA = 0.25;
matte1.KD = 0.65;
matte1.Color = new RGBColor(1, 1, 0);
Sphere sphere1 = new Sphere(new Point3d(10,5,0), 27);
sphere1.Material = matte1;
world.AddObject(sphere1);
//Sphere 2
Matte matte2 = new Matte();
matte2.KA = 0.15;
matte2.KD = 0.85;
matte2.Color = new RGBColor(0.71, 0.40, 0.16);
Sphere sphere2 = new Sphere(new Point3d(-25, 10, -35), 27);
sphere2.Material = matte2;
world.AddObject(sphere2);
//Plane
Matte matte3 = new Matte();
matte3.KA = 0.15;
matte3.KD = 0.5;
matte3.Color = new RGBColor(0, 0.4, 0.2);
Phong phong = new Phong();
phong.KA = 0;
phong.KD = 0;
phong.KS = 1;
phong.Color = new RGBColor(0, 0.4, 0.2);
Vector3d normal = new Vector3d(0, 1, 0);
normal.Normalize();
Plane plane = new Plane(new Point3d(0, -10, 0),
normal);
plane.Material = phong;
world.AddObject(plane);
}
public static void BuildSingleSphere(World world)
{
world.ViewPlane = new ViewPlane();
world.ViewPlane.HRes = 200;
world.ViewPlane.VRes = 200;
world.ViewPlane.PixelSize = 1;
world.ViewPlane.Gamma = 1;
world.Camera=new PinholeCamera(50);
var eye = new Vector3d(0, 0, 100);
var lookAt = new Vector3d(0, 0, 0);
world.Camera.SetUpCamera(eye, lookAt);
//world.ViewPlane.SamplesCount = 64;
world.ViewPlane.Sampler = new Hammersley(1, 25);
world.BackgroundColor = new RGBColor(0, 0, 0);
world.Tracer = new Normals(world);
world.Sphere = new Sphere(new Point3d(0, 0, 0), 85);
world.Sphere.Color = new RGBColor(1, 0, 0);
world.AddObject(world.Sphere);
}
public static double Dot(Vector3d v1, Vector3d v2)
{
return v1.X*v2.X + v1.Y*v2.Y + v1.Z*v2.Z;
}
public static Vector3d Cross(Vector3d v1, Vector3d v2)
{
return new Vector3d(v1.Y*v2.Z - v1.Z*v2.Y,
v1.Z*v2.X - v1.X*v2.Z,
v1.X*v2.Y - v1.Y*v2.X);
}
public virtual RGBColor SampleF(ShadeRec shadeRec, Vector3d wi, Vector3d wo)
{
return new RGBColor();
}
public virtual RGBColor Rho(ShadeRec shadeRec,Vector3d wo)
{
return new RGBColor();
}
public void SetUpCamera(Vector3d eye,Vector3d lookAt)
{
SetUpCamera(eye, lookAt, new Vector3d(0, 1, 0));
}
