Exemplo n.º 1
0
        public PlanePrimitive(Vector3F normal, float distance)
        {
            PrimitiveType = PrimitiveType.Plane;

            Normal = normal;
            Distance = distance;
        }
Exemplo n.º 2
0
        public override Vector3F GetNormal(Vector3F position)
        {
            var x = position.X - Center.X == 0.0f ? 0 : Math.Sign(Center.X - position.X);
            var y = position.Y - Center.Y == 0.0f ? 0 : Math.Sign(Center.Y - position.Y);
            var z = position.Z - Center.Z == 0.0f ? 0 : Math.Sign(Center.Z - position.Z);

            return new Vector3F(x, y, z);
        }
Exemplo n.º 3
0
 public SpherePrimitive(Vector3F center, float radius)
 {
     Center = center;
     Radius = radius;
     SquareRadius = radius * radius;
     RRadius = 1.0f / radius;
     PrimitiveType = PrimitiveType.Sphere;
 }
Exemplo n.º 4
0
        public override bool Render()
        {
            // Render scene
            var o = new Vector3F(0.0f, 0.0f, -5.0f);

            // Initialize timer
            var msecs = Environment.TickCount;

            // Render remaining lines
            for (var lineY = _currLine; lineY < (Height); lineY++)
            {
                _sx = _worldX1;

                // Render pixels for current line
                for (var lineX = 0; lineX < Width; lineX++)
                {
                    // Fire primary ray

                    var dir = new Vector3F(_sx, _sy, 0.0f) - o;
                    dir.Normalize();

                    var r = new Ray(o, dir);
                    var acc = Raytrace(r, 1);

                    var red = (int)(acc.X * 256);
                    var green = (int)(acc.Y * 256);
                    var blue = (int)(acc.Z * 256);

                    if (red > 255) red = 255;
                    if (green > 255) green = 255;
                    if (blue > 255) blue = 255;

                    PixelBuffer[_pPos++] = (uint)((red << 16) + (green << 8) + blue);
                    _sx += _deltaX;
                }
                _sy += _deltaY;

                // See if we've been working to long already
                if ((Environment.TickCount - msecs) > 100)
                {
                    // return control to windows so the screen gets updated
                    _currLine = lineY + 1;
                    return false;
                }
            }
            // all done
            return true;
        }
Exemplo n.º 5
0
 public override Vector3F GetNormal(Vector3F position)
 {
     return Normal;
 }
Exemplo n.º 6
0
 public BoxPrimitive(Vector3F min, Vector3F max)
 {
     Min = min;
     Max = max;
 }
Exemplo n.º 7
0
 public BoxPrimitive()
 {
     PrimitiveType = PrimitiveType.Box;
     Min = new Vector3F(0);
     Max = new Vector3F(1);
 }
Exemplo n.º 8
0
 public override Vector3F GetNormal(Vector3F position)
 {
     return (position - Center) * RRadius;
 }
Exemplo n.º 9
0
        /// <summary>
        /// Initializes the scene.
        /// </summary>
        public void InitScene()
        {
            dynamic json = JsonConvert.DeserializeObject(File.ReadAllText("scene.json"));

            #region Read materials from json
            var defaultColor = new Color(0.2f, 0.2f, 0.2f);
            const float defaultReflection = 0.0f;
            const float defaultDiffuse = 0.2f;

            var materialList = new List<Material>();
            var materials = json.materials;
            foreach (var material in materials)
            {
                materialList.Add(new Material
                {
                    Name = material.name,
                    Color = material.color == null ? defaultColor : new Color((float)material.color[0], (float)material.color[1], (float)material.color[2]),
                    Diffuse = material.diffuse ?? defaultDiffuse,
                    Reflection = material.reflection ?? defaultReflection
                });
            }
            #endregion Read materials from json

            #region Read primitives from json
            var primitives = json.primitives;
            foreach (var primitive in primitives)
            {
                var primitiveType = (PrimitiveType)primitive.primitiveType;
                Primitive newPrimitive;

                switch (primitiveType)
                {
                    case PrimitiveType.Box:
                        var min = new Vector3F((float)primitive.min[0], (float)primitive.min[1], (float)primitive.min[2]);
                        var max = new Vector3F((float)primitive.max[0], (float)primitive.max[1], (float)primitive.max[2]);

                        newPrimitive = new BoxPrimitive(min, max)
                        {
                            Name = primitive.name,
                            IsLight = primitive.isLight ?? false,
                            Material = materialList.FirstOrDefault(x => x.Name == (string)primitive.material)
                        };

                        break;
                    case PrimitiveType.Plane:
                        var normal = new Vector3F((float)primitive.normal[0], (float)primitive.normal[1], (float)primitive.normal[2]);
                        float distance = primitive.distance ?? 0.0f;

                        newPrimitive = new PlanePrimitive(normal, distance)
                        {
                            Name = primitive.name,
                            IsLight = primitive.isLight ?? false,
                            Material = materialList.FirstOrDefault(x => x.Name == (string)primitive.material)
                        };

                        break;
                    case PrimitiveType.Sphere:
                        var center = new Vector3F((float)primitive.center[0], (float)primitive.center[1], (float)primitive.center[2]);
                        float radius = primitive.radius ?? 0.0f;

                        newPrimitive = new SpherePrimitive(center, radius)
                        {
                            Name = primitive.name,
                            IsLight = primitive.isLight ?? false,
                            Material = materialList.FirstOrDefault(x => x.Name == (string)primitive.material)
                        };

                        break;
                    default:
                        throw new ArgumentException("Invalid primitive type!");
                }

                Primitives.Add(newPrimitive);
            }
            #endregion Read primitives from json
        }
Exemplo n.º 10
0
 public float Dot(Vector3F vector)
 {
     return Dot(this, vector);
 }
Exemplo n.º 11
0
 public Vector3F Cross(Vector3F b)
 {
     return new Vector3F(Y * b.Z - Z * b.Y, Z * b.X - X * b.Z, X * b.Y - Y * b.X);
 }
Exemplo n.º 12
0
 /// <summary>
 /// Calculates the dot product of two vectors a and b.
 /// </summary>
 /// <param name="vector1">a.</param>
 /// <param name="vector2">The b.</param>
 /// <returns></returns>
 public static float Dot(Vector3F vector1, Vector3F vector2)
 {
     return vector1.X * vector2.X + vector1.Y * vector2.Y + vector1.Z * vector2.Z;
 }