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);
}
}
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);
}
}
public Point FindPoint(string name, Point defaultValue)
{
return(_geomParams.FindPoint(name, defaultValue));
}
