private void MenuItem_Load_Click(object sender, RoutedEventArgs e)
{
System.Windows.Forms.OpenFileDialog fDialog = new System.Windows.Forms.OpenFileDialog();
if (fDialog.ShowDialog() != System.Windows.Forms.DialogResult.OK)
{
return;
}
string filename = fDialog.FileName;
DataSet data = new DataSet();
RayTracer.Parser parser = new RayTracer.Parser();
RayTracer.Database.DataTableHelper.ReadXmlIntoDataSet(data, filename);
List <RayTracer.Scene> scenes = parser.LoadScene(data);
addFloor = false;
DragCanvas canvas = (DragCanvas)this.FindName("canvas");
canvas.Children.Clear();
objects.Clear();
ContextMenu contextMenu = (ContextMenu)this.FindName("selectContextMenu");
contextMenu.Items.Clear();
foreach (Scene scene in scenes)
{
this.camera = scene.camera;
this.light = scene.light;
foreach (AObject aObject in scene.allObjects)
{
if (aObject.GetType() == typeof(RayTracer.Floor))
{
addFloor = true;
}
else if (aObject.GetType() == typeof(RayTracer.Block))
{
CreateBlock((RayTracer.Block)aObject);
}
else if (aObject.GetType() == typeof(RayTracer.Sphere))
{
CreateEllipse((RayTracer.Sphere)aObject);
}
}
break;
}
}
// Camera = new Camera(new Vector3(0, 0, -5), new Vector3(0, 0, 1));
public Image TraceRay(Viewport viewport, Camera camera, Scene scene)
{
var image = new Image(viewport);
Color[,] colours;
for (int y = 0; y < viewport.Height; y++)
{
for (int x = 0; x < viewport.Width; x++)
{
Ray ray = camera.GetRay(x, y, viewport);
}
}
throw new NotImplementedException();
}
public void Draw(Camera camera)
{
Guard.IsNotNull(nameof(camera), camera);
Colour[,] imageBuffer = new Colour[camera.ViewPort.Width, camera.ViewPort.Height];
for (int x = 0; x < camera.ViewPort.Width; x++)
{
for (int y = 0; y < camera.ViewPort.Height; y++)
{
Ray ray = camera.GetRay(x, y);
imageBuffer[x, y] = TraceRay(ray, 0);
}
}
//todo return something
}
protected override void LoadContent()
{
Vector3 camPos = new Vector3(0, 1, 1);
Vector3 camTarget = new Vector3(0, 1, 0);
cam = new Camera();
cam.Proj = Matrix.CreatePerspectiveFieldOfView(MathHelper.ToRadians(45f), width / height, 0.1f, 1000f);
cam.View = Matrix.CreateLookAt(camPos, camTarget, Vector3.Up);
cam.World = Matrix.CreateTranslation(camPos);
InitializeEyeRays(cam);
InitializeSpheres(numSpheres);
InitializeTextures();
InitializeLights(numLights);
Thread t = new Thread(new ThreadStart(RayTrace));
t.Start();
//RayTrace();
spriteBatch = new SpriteBatch(GraphicsDevice);
}
public MainWindow()
{
InitializeComponent();
light = new RayTracer.Light(1, new RayTracer.Point(-15, 10, 20));
RayTracer.Point point = new RayTracer.Point(5.3368f, 8.0531f, 9.8769f);
RayTracer.Vector direction = new RayTracer.Vector(-0.38363f, -0.42482f, -0.82f);
RayTracer.Vector directionUp = new RayTracer.Vector(-0.16485f, 0.90515f, -0.391826f);
this.camera = new RayTracer.Camera(-1, point, direction, directionUp, 60f);
Button front = (Button)this.FindName("viewButtonFront");
front.Foreground = new SolidColorBrush(Colors.Red);
TextBox positionZ, depth;
positionZ = (TextBox)this.FindName("positionZ");
positionZ.IsEnabled = false;
depth = (TextBox)this.FindName("rectangleDepth");
depth.IsEnabled = false;
}
private void InitializeEyeRays(Camera camera)
{
eyeRays = new Ray[width * height];
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
Vector3 source1 = new Vector3(i, j, 0f);
Vector3 source2 = new Vector3(i, j, 1f);
Vector3 unproj1 = GraphicsDevice.Viewport.Unproject(source1, cam.Proj, cam.View, cam.World);
Vector3 unproj2 = GraphicsDevice.Viewport.Unproject(source2, cam.Proj, cam.View, cam.World);
Ray r = new Ray();
r.Pos = unproj1;
r.Dir = Vector3.Normalize(unproj2-unproj1);
eyeRays[(j * width) + i] = r;
}
}
}
public Scene(Camera camera)
{
Objects3D = new List<Object3D>();
Lights = new List<Light>();
Camera = camera;
}
public static Bitmap run_raytracer(LinkedList<Object> objects, LinkedList<LightSource> lights, Camera c, Size size)
{
Console.WriteLine("Daniel Bolink's Ray Tracer");
//image size
int width = size.Width;
int height = size.Height;
// Create Camera
//Camera c = new Camera(new Position(0, 0, -10), new Position(0,0,0));
//create colors
Color BGColor = new Color(0, 0, 0);
//Color BLACK = new Color(0, 0, 0);
//Color WHITE = new Color(255, 255, 255);
//Color GREEN = new Color(0, 255, 0);
//Color YELLOW = new Color(255, 255, 0);
//Color ORANGE = new Color(255, 0, 255);
//Color RED = new Color(200, 0, 0);
//Color BLUE = new Color(0, 0, 255);
//create Objects in frame
//red plane at below 10 units
//Object p1 = new Plane(new Vector(0, 1, 0), -1, RED);
//blue sphere 10 units ahead radis 0.5
//Object s1 = new Sphere(1, new Position(0, 0, 0), BLACK);
//Object s2 = new Sphere(1, new Position(2, 0, 0), ORANGE);
//add Objects to list
//objects.AddLast(s1);
//objects.AddLast(p1);
//objects.AddLast(s2);
//add Light Sources
//LightSource l1 = new LightSource(new Position(20, 5, 10), WHITE);
//LightSource l2 = new LightSource(new Position(-20, 5, 10), BLUE);
//add lightsources to linked list
//lights.AddLast(l1);
//lights.AddLast(l2);
// Create Pixels
Color[,] pixels = new Color[width, height];
//ray tracing algorithm
for(int x = 0; x < width; x++)
{
for (int y = 0; y<height; y++)
{
double xamnt = (x + 0.5) / width;
double yamnt = ((height - y) + 0.5) / height;
Vector ray_direction = (c.direction + (c.right * (xamnt-0.5) + (c.down * (yamnt - 0.5)))).normalize();
Ray ray = new Ray(c.position, ray_direction);
LinkedList<ObjectPair> intersection_objects = new LinkedList<ObjectPair>();
foreach(Object o in objects)
{
double val = o.find_intersection(ray);
if (val > 0)
{
intersection_objects.AddLast(new ObjectPair(o, val));
}
//Console.WriteLine(val);
}
//Console.WriteLine(intersection_objects.Count);
if(intersection_objects.Count == 0)
{
pixels[x, y] = BGColor;
}
else
{
ObjectPair winner = new ObjectPair(null, -1);
foreach (ObjectPair o in intersection_objects)
{
if (winner.val == -1)
{
winner = o;
}
else if(winner.val > o.val && o.val >= 0)
{
winner = o;
}
}
if(winner.val > 0)
{
Color final_color = winner.obj.color;
Position intersection_point = ray.origin + (ray.direction * (winner.val * 0.999));
foreach (LightSource l in lights)
{
Boolean shadowed = false;
Vector light_direction = new Vector(l.origin, intersection_point).normalize();
//Vector light_direction = new Vector(intersection_point, l.origin).normalize();
Ray shadow_ray = new Ray(intersection_point, light_direction);
foreach(Object o in objects)
{
double obj_intersection = o.find_intersection(shadow_ray);
if(obj_intersection > 0)
{
shadowed = true;
break;
}
}
if (!shadowed)
{
Vector Winner_obj_normal = winner.obj.getNormalAt(intersection_point);
double diffuse_coeffient = (shadow_ray.direction.normalize().dot(Winner_obj_normal));
Vector reflection_direction = shadow_ray.direction - (2 * (shadow_ray.direction.dot(Winner_obj_normal)/Winner_obj_normal.magnitude()*Winner_obj_normal));
Ray reflection = new Ray(intersection_point, reflection_direction);
double specular_coefficient = reflection.direction.dot(ray.direction);
final_color += l.color * 0.15;
if(diffuse_coeffient > 0)
{
final_color += l.color * diffuse_coeffient * 0.15;
}
if(specular_coefficient > 0)
{
final_color += l.color * Math.Pow(specular_coefficient, 1000);
}
}
}
pixels[x, y] = final_color.clip();
}
else
{
pixels[x, y] = BGColor;
}
}
}
}
//create image
Bitmap bmp = CreateImg(pixels);
//Process photoViewer = Process.Start("RayTracer.png");
//prompt for exit
//Console.WriteLine("Press any key to exit.");
//Console.ReadKey();
return bmp;
}
private void RayTracer_Form_Load(object sender, System.EventArgs e)
{
objects = new LinkedList<Object>();
lights = new LinkedList<LightSource>();
objects.AddLast(new Plane(new Vector(0, 1, 0), -1, new Color(255, 0, 0)));
objects.AddLast(new Sphere(1, new Position(0, 0, 0), new Color(0, 255, 0)));
cam_pos = new Position(0, 1, -5);
lookat = new Position(0, 0, 0);
Color WHITE = new Color(255, 255, 255);
LightSource l1 = new LightSource(new Position(0, 1, -10), WHITE);
lights.AddLast(l1);
this.camera = new Camera(cam_pos, lookat);
pictureBox1.Image = Program.run_raytracer(objects, lights, camera, pictureBox1.Size);
pictureBox1.Refresh();
updateObjects();
updateLights();
}
private Vector GetPoint(double x, double y, Camera camera)
{
return Vector.Norm(Vector.Plus(camera.Forward, Vector.Plus(Vector.Times(RecenterX(x), camera.Right),
Vector.Times(RecenterY(y), camera.Up))));
}
private Vector GetPoint(float x, float y, Camera camera)
{
float rx = RecenterX(x);
float ry = RecenterY(y);
float vx = camera.Forward.X + (rx * camera.Right.X + ry * camera.Up.X);
float vy = camera.Forward.Y + (rx * camera.Right.Y + ry * camera.Up.Y);
float vz = camera.Forward.Z + (rx * camera.Right.Z + ry * camera.Up.Z);
float sqrLength, invLength;
sqrLength = vx * vx + vy * vy + vz * vz;
invLength = SceneObject.InvSqrt(sqrLength);
return new Vector(vx * invLength, vy * invLength, vz * invLength);
}
