Exemple #1
0
        public static Light MakeLight(string name, Transform lightToWorld, ParamSet parameters)
        {
            switch (name)
            {
            case "distant":
            {
                var l     = parameters.FindSpectrum("L", new Spectrum(1.0f));
                var scale = parameters.FindSpectrum("scale", new Spectrum(1.0f));
                var from  = parameters.FindPoint("from", Point.Zero);
                var to    = parameters.FindPoint("to", new Point(0, 0, 1));
                var dir   = from - to;
                return(new DistantLight(lightToWorld, l * scale, dir));
            }

            case "point":
            {
                var i     = parameters.FindSpectrum("I", new Spectrum(1.0f));
                var scale = parameters.FindSpectrum("scale", new Spectrum(1.0f));
                var from  = parameters.FindPoint("from", Point.Zero);
                var l2w   = Transform.Translate((Vector)from) * lightToWorld;
                return(new PointLight(l2w, i * scale));
            }

            default:
                throw new ArgumentException("Unknown light: " + name);
            }
        }
Exemple #2
0
 public static AreaLight MakeAreaLight(string name, Transform lightToWorld,
     ParamSet parameters, Shape shape)
 {
     switch (name)
     {
         case "area":
         case "diffuse":
         {
             var l = parameters.FindSpectrum("L", new Spectrum(1.0f));
             var scale = parameters.FindSpectrum("scale", new Spectrum(1.0f));
             var numSamples = parameters.FindInt32("nsamples", 1);
             return new DiffuseAreaLight(lightToWorld, l * scale, numSamples, shape);
         }
         default:
             throw new ArgumentException("Unknown area light: " + name);
     }
 }
Exemple #3
0
        public static AreaLight MakeAreaLight(string name, Transform lightToWorld,
                                              ParamSet parameters, Shape shape)
        {
            switch (name)
            {
            case "area":
            case "diffuse":
            {
                var l          = parameters.FindSpectrum("L", new Spectrum(1.0f));
                var scale      = parameters.FindSpectrum("scale", new Spectrum(1.0f));
                var numSamples = parameters.FindInt32("nsamples", 1);
                return(new DiffuseAreaLight(lightToWorld, l * scale, numSamples, shape));
            }

            default:
                throw new ArgumentException("Unknown area light: " + name);
            }
        }
Exemple #4
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        public Texture <Spectrum> GetSpectrumTexture(string n, Spectrum defaultValue)
        {
            var name = _geomParams.FindTexture(n);

            if (string.IsNullOrEmpty(name))
            {
                name = _materialParams.FindTexture(n);
            }

            if (!string.IsNullOrEmpty(name))
            {
                if (_spectrumTextures.ContainsKey(name))
                {
                    return(_spectrumTextures[name]);
                }
                throw new InvalidOperationException(string.Format("Couldn't find spectrum texture named '{0}' for parameter '{1}'", name, n));
            }
            var value = _geomParams.FindSpectrum(n, _materialParams.FindSpectrum(n, defaultValue));

            return(new ConstantTexture <Spectrum>(value));
        }
Exemple #5
0
 public static Light MakeLight(string name, Transform lightToWorld, ParamSet parameters)
 {
     switch (name)
     {
         case "distant" :
         {
             var l = parameters.FindSpectrum("L", new Spectrum(1.0f));
             var scale = parameters.FindSpectrum("scale", new Spectrum(1.0f));
             var from = parameters.FindPoint("from", Point.Zero);
             var to = parameters.FindPoint("to", new Point(0, 0, 1));
             var dir = from - to;
             return new DistantLight(lightToWorld, l * scale, dir);
         }
         case "point":
         {
             var i = parameters.FindSpectrum("I", new Spectrum(1.0f));
             var scale = parameters.FindSpectrum("scale", new Spectrum(1.0f));
             var from = parameters.FindPoint("from", Point.Zero);
             var l2w = Transform.Translate((Vector) from) * lightToWorld;
             return new PointLight(l2w, i * scale);
             }
         default:
             throw new ArgumentException("Unknown light: " + name);
     }
 }
Exemple #6
0
 public Spectrum FindSpectrum(string name, Spectrum defaultValue)
 {
     return(_geomParams.FindSpectrum(name, defaultValue));
 }