Exemplo n.º 1
0
        List <TracedRay> process_rays(Surface surface, TraceIntensityMode m, RayTraceResults result,
                                      List <TracedRay> input)
        {
            RayTraceParameters params_ = result._parameters;
            List <TracedRay>   rays    = new();

            foreach (TracedRay i in input)
            {
                TracedRay ray = i;

                Transform3 t
                    = ray.get_creator().get_transform_to(surface);
                Vector3Pair local1 = t.transform_line(ray.get_ray());

                Vector3Pair pt = surface is Stop
                    ? intersect((Stop)surface, params_, local1)
                    : intersect(surface, params_, local1);

                if (pt != null)
                {
                    result.add_intercepted(surface, ray);
                    TracedRay cray = trace_ray(surface, m, result, ray, local1, pt);
                    if (cray != null)
                    {
                        rays.Add(cray);
                    }
                }
            }

            return(rays);
        }
        static bool draw_traced_ray_recurs(Renderer renderer, TracedRay ray, double lost_len,
                                           Element ref_, bool hit_image, int D, bool draw_lost)
        {
            Transform3 t1        = ray.get_creator().get_transform_to(ref_);
            Element    i_element = null;

            Vector3 v0 = t1.transform(ray.get_ray().origin());
            Vector3 v1;

            if (ray.is_lost())
            {
                if (!draw_lost)
                {
                    return(false);
                }
                v1 = t1.transform(ray.get_ray().origin().plus(ray.get_ray().direction().times(lost_len)));
            }
            else
            {
                i_element = ray.get_intercept_element();
                Transform3 t2 = i_element.get_transform_to(ref_);
                v1 = t2.transform(ray.get_intercept_point());
            }

            Vector3Pair p    = new Vector3Pair(v0, v1);
            bool        done = false;

            for (TracedRay child_ray = ray.get_first_child(); child_ray != null; child_ray = child_ray.get_next_child())
            {
                if (draw_traced_ray_recurs(renderer, child_ray, lost_len, ref_, hit_image, 2, false))
                {
                    done = true;
                }
            }

            if (!done && hit_image && !(i_element is Image))
            {
                return(false);
            }

            switch (D)
            {
            case 2:
                // skip non tangential rays in 2d mode
                if (Math.Abs(p.x1()) > 1e-6)
                {
                    return(false);
                }

                draw_ray_line(renderer, new Vector2Pair(p.v0.project_zy(), p.v1.project_zy()), ray);
                break;

            case 3:
                draw_ray_line(renderer, p, ray);
                break;
            }

            return(true);
        }
Exemplo n.º 3
0
        bool _lost;                  // does the ray intersect with an element ?

        public TracedRay(Vector3 origin, Vector3 direction) : base(new Vector3Pair(origin, direction))
        {
            _len     = Double.MaxValue;
            _creator = null;
            _parent  = null;
            _child   = null;
            _lost    = true;
        }
Exemplo n.º 4
0
 private TracedRay trace_ray_simple(Surface surface, RayTraceResults result, TracedRay incident,
                                    Vector3Pair local, Vector3Pair pt)
 {
     if (surface is OpticalSurface)
     {
         return(trace_ray_simple((OpticalSurface)surface, result, incident, local, pt));
     }
     else if (surface is Stop)
     {
         return(trace_ray_simple((Stop)surface, result, incident, local, pt));
     }
     else
     {
         return(null);
     }
 }
Exemplo n.º 5
0
        TracedRay trace_ray(Surface surface, TraceIntensityMode m,
                            RayTraceResults result, TracedRay incident,
                            Vector3Pair local,
                            Vector3Pair pt)
        {
            incident.set_len((pt.origin().minus(local.origin())).len());
            incident.set_intercept(surface, pt.origin());

            if (m == TraceIntensityMode.Simpletrace)
            {
                incident.set_intercept_intensity(1.0);
                return(trace_ray_simple(surface, result, incident, local, pt));
            }
            else
            {
                // apply absorbtion from current material
                double i_intensity
                    = incident.get_intensity()
                      * incident.get_material().get_internal_transmittance(
                          incident.get_wavelen(), incident.get_len());

                incident.set_intercept_intensity(i_intensity);

                // FIXME
//            if (i_intensity < _discard_intensity)
//                return;

                if (m == TraceIntensityMode.Intensitytrace)
                {
                    return(trace_ray_intensity(surface, result, incident, local, pt));
                }
                else if (m == TraceIntensityMode.Polarizedtrace)
                {
                    return(trace_ray_polarized(surface, result, incident, local, pt));
                }
                else
                {
                    throw new InvalidOperationException();
                }
            }
        }
Exemplo n.º 6
0
        TracedRay trace_ray_simple(Stop surface, RayTraceResults result, TracedRay incident, Vector3Pair local,
                                   Vector3Pair intersect)
        {
            Vector2 v = intersect.origin().project_xy();

            bool ir = true; // FIXME  _intercept_reemit || result.get_params ().is_sequential ();

            if (ir && surface.get_shape().inside(v))
            {
                // re-emit incident ray
                TracedRay r = result.newRay(intersect.origin(), incident.get_ray().direction());

                r.set_wavelen(incident.get_wavelen());
                r.set_intensity(incident.get_intensity());
                r.set_material(incident.get_material());
                r.set_creator(surface);

                incident.add_generated(r);
                return(r);
            }

            return(null);
        }
Exemplo n.º 7
0
        List <TracedRay> process_rays(Stop surface, TraceIntensityMode m, RayTraceResults result, List <TracedRay> input)
        {
            List <TracedRay> rays = new();

            foreach (TracedRay i in input)
            {
                TracedRay ray = i;

                Transform3  t     = ray.get_creator().get_transform_to(surface);
                Vector3Pair local = t.transform_line(ray.get_ray());

                Vector3 origin = surface.get_curve().intersect(local);
                if (origin != null)
                {
                    if (origin.project_xy().len() < surface.get_external_radius())
                    {
                        Vector3 normal = surface.get_curve().normal(origin);

                        if (local.direction().z() < 0)
                        {
                            normal = normal.negate();
                        }

                        result.add_intercepted(surface, ray);

                        TracedRay cray = trace_ray(surface, m, result, ray, local, new Vector3Pair(origin, normal));
                        if (cray != null)
                        {
                            rays.Add(cray);
                        }
                    }
                }
            }

            return(rays);
        }
 static void draw_ray_line(Renderer r, Vector3Pair l, TracedRay ray)
 {
     r.draw_segment(l, ray_to_rgb(ray));
 }
Exemplo n.º 9
0
        private TracedRay trace_ray_simple(OpticalSurface surface, RayTraceResults result, TracedRay incident,
                                           Vector3Pair local, Vector3Pair intersect)
        {
            bool   right_to_left = intersect.normal().z() > 0;
            Medium prev_mat      = surface.get_material(right_to_left ? 1 : 0);
            Medium next_mat      = surface.get_material(!right_to_left ? 1 : 0);

            // check ray didn't "escaped" from its material
            // std::cout << prev_mat->name << " " << next_mat->name <<
            //          " " << incident.get_material()->name << std::endl;

            if (prev_mat != incident.get_material())
            {
                return(null);
            }

            double wl    = incident.get_wavelen();
            double index = prev_mat.get_refractive_index(wl)
                           / next_mat.get_refractive_index(wl);

            // refracted ray direction
            Vector3 direction = refract(surface, local, intersect.normal(), index);

            if (direction == null)
            {
                // total internal reflection
                Vector3   o   = intersect.origin();
                Vector3   dir = reflect(surface, local, intersect.normal());
                TracedRay r   = result.newRay(o, dir);

                r.set_wavelen(wl);
                r.set_intensity(incident.get_intensity());
                r.set_material(prev_mat);

                r.set_creator(surface);
                incident.add_generated(r);

                return(r);
            }

            // transmit
            if (!next_mat.is_opaque())
            {
                Vector3   o = intersect.origin();
                TracedRay r = result.newRay(o, direction);

                r.set_wavelen(wl);
                r.set_intensity(incident.get_intensity());
                r.set_material(next_mat);

                r.set_creator(surface);
                incident.add_generated(r);
                return(r);
            }

            // reflect
            if (next_mat.is_reflecting())
            {
                Vector3 o   = intersect.origin();
                Vector3 dir = reflect(surface, local, intersect.normal());

                TracedRay r = result.newRay(o, dir);

                r.set_wavelen(wl);
                r.set_intensity(incident.get_intensity());
                r.set_material(prev_mat);
                r.set_creator(surface);
                incident.add_generated(r);
                return(r);
            }

            return(null);
        }
Exemplo n.º 10
0
 private TracedRay trace_ray_intensity(Surface surface, RayTraceResults result, TracedRay incident,
                                       Vector3Pair local, Vector3Pair pt)
 {
     throw new InvalidOperationException();
 }
Exemplo n.º 11
0
        List <TracedRay> generate_rays(
            RayTraceResults result,
            RayTraceParameters parameters,
            PointSource source,
            Element target,
            PointSource.SourceInfinityMode mode)
        {
            if (!(target is OpticalSurface))
            {
                return(new());
            }

            OpticalSurface   target_surface = (OpticalSurface)target;
            double           rlen           = parameters.get_lost_ray_length();
            Distribution     d    = parameters.get_distribution(target_surface);
            List <TracedRay> rays = new();
            ConsumerVector3  de   = (Vector3 v) =>
            {
                Vector3 r = target_surface.get_transform_to(source).transform(v); // pattern point on target surface
                Vector3 direction;
                Vector3 position;

                switch (mode)
                {
                case PointSource.SourceInfinityMode.SourceAtFiniteDistance:
                    position  = Vector3.vector3_0;
                    direction = r.normalize();
                    break;

                default:
                case PointSource.SourceInfinityMode.SourceAtInfinity:
                    direction = Vector3.vector3_001;
                    position  = new Vector3Pair(
                        target_surface.get_position(source).minus(Vector3.vector3_001.times(rlen)),
                        Vector3.vector3_001)
                                .pl_ln_intersect(new Vector3Pair(r, direction));
                    break;
                }

                foreach (SpectralLine l in source.spectrum())
                {
                    // generated rays use source coordinates
                    TracedRay ray = result.newRay(position, direction);
                    ray.set_creator(source);
                    ray.set_intensity(l.get_intensity()); // FIXME depends on distance from
                    // source and pattern density
                    ray.set_wavelen(l.get_wavelen());
                    Medium material = source.get_material();
                    if (material == null)
                    {
                        material = Air.air; // FIXME centralize as env - original uses env proxy.
                    }

                    ray.set_material(material);
                    rays.Add(ray);
                }
            };

            target_surface.get_pattern(de, d, parameters.get_unobstructed());
            return(rays);
        }
Exemplo n.º 12
0
 public void add_generated(TracedRay r)
 {
     r._parent = this;
     r._next   = _child;
     _child    = r;
 }