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);
}