Exemple #1
0
        public override Vec3 Shade(ShadeRec sr)
        {
            Vec3 wo = sr.Ray.D * -1;
            Vec3 L  = ambient.RHO(sr, wo) * sr.World.AmbientLight.L(sr);

            foreach (var light in sr.World.Lights)
            {
                Vec3  wi     = light.GetDirection(sr);
                float ndotwi = (float)sr.Normal.Dot(wi);

                if (ndotwi > 0.0)
                {
                    bool inShadow = false;

                    if (light.Shadows)
                    {
                        Ray shadowRay = new Ray(sr.HitPoint, wi);
                        inShadow = light.InShadow(shadowRay, sr);
                    }

                    if (!inShadow)
                    {
                        L += (Diffuse.F(sr, wi, wo) +
                              specular.F(sr, wi, wo)) *
                             light.L(sr) * ndotwi;
                    }
                }
            }

            return(L);
        }
Exemple #2
0
        public override Vector3 Shade(ShadeRec sr)
        {
            Vector3 wo         = -sr.Ray.Direction;
            Vector3 L          = ambient.RHO(sr, wo) * sr.World.AmbientLight.L(sr);
            int     num_lights = sr.World.Lights.Count;

            for (int j = 0; j < num_lights; j++)
            {
                Vector3 wi     = sr.World.Lights[j].GetDirection(sr);
                float   ndotwi = Vector3.Dot(sr.Normal, wi);
                if (ndotwi > 0.0)
                {
                    if (Shadows)
                    {
                        bool in_shadow = false;

                        if (sr.World.Lights[j].Shadows)
                        {
                            Ray shadowRay = new Ray(sr.HitPoint, wi);
                            in_shadow = sr.World.Lights[j].InShadow(shadowRay, sr);
                        }
                        if (!in_shadow)
                        {
                            L += (diffuse.F(sr, wo, wi) + specular.F(sr, wo, wi)) * sr.World.Lights[j].L(sr) * ndotwi;
                        }
                    }
                    else
                    {
                        L += (diffuse.F(sr, wo, wi) + specular.F(sr, wo, wi)) * sr.World.Lights[j].L(sr) * ndotwi;
                    }
                }
            }
            return(L);
        }
Exemple #3
0
        public override RGBColor Shade(ShadeRec shadeRec)
        {
            Vector3d wo = -shadeRec.Ray.Direction;
            RGBColor L  = ambientBRDF.Rho(shadeRec, wo) * shadeRec.World.AmbientLight.L((shadeRec));

            for (int i = 0; i < shadeRec.World.Lights.Count; i++)
            {
                Vector3d wi     = shadeRec.World.Lights[i].GetDirection(shadeRec);
                double   NdotWi = Vector3d.Dot(shadeRec.Normal, wi);
                if (NdotWi > 0)
                {
                    L = L + diffuseBRDF.F(shadeRec, wo, wi) +
                        glossySpecularBRDF.F(shadeRec, wo, wi) * shadeRec.World.Lights[i].L(shadeRec) * NdotWi;
                }
            }
            return(L);
        }