public static AreaLight CreateAreaLight(Transform lightToWorld, ParameterSet paramSet, IShape shape)
{
Spectrum L = paramSet.FindOneSpectrum ("L", new Spectrum (1.0));
Spectrum sc = paramSet.FindOneSpectrum ("scale", new Spectrum (1.0));
int nSamples = paramSet.FindOneInt ("nsamples", 1);
return new DiffuseAreaLight (lightToWorld, L * sc, nSamples, shape);
}
public ShapeSet(IShape shape)
{
Areas = new List<double> ();
Shapes = new List<IShape> ();
List<IShape> todo = new List<IShape> ();
todo.Add (shape);
while (todo.Count > 0)
{
IShape sh = todo[todo.Count - 1];
todo.RemoveAt (todo.Count - 1);
if (sh.CanIntersect)
Shapes.Add (sh);
else
sh.Refine (ref todo);
}
SumArea = 0.0;
foreach (IShape s in Shapes)
{
double area = s.Area;
Areas.Add (area);
SumArea += area;
}
AreaDistribution = new Distribution1D (Areas, Areas.Count);
}
public DiffuseAreaLight(Transform lightToWorld, Spectrum Le, int ns, IShape shape)
: base(lightToWorld, ns)
{
Lemit = Le;
ShapeSet = new ShapeSet (shape);
area = ShapeSet.Area;
}
public DifferentialGeometry()
{
p = new Point ();
n = new Normal ();
dpdu = new Vector ();
dpdv = new Vector ();
dndu = new Normal ();
dndv = new Normal ();
dpdx = new Vector ();
dpdy = new Vector ();
u = v = 0.0;
dudx = dudy = dvdx = dvdy = 0.0;
Shape = null;
}
public DifferentialGeometry(DifferentialGeometry dg)
{
this.p = new Point (dg.p);
this.dpdu = new Vector (dg.dpdu);
this.dpdv = new Vector (dg.dpdv);
this.dndu = new Normal (dg.dndu);
this.dndv = new Normal (dg.dndv);
this.n = new Normal (dg.n);
this.u = dg.u;
this.v = dg.v;
this.dudx = dg.dudx;
this.dvdx = dg.dvdx;
this.dudy = dg.dudy;
this.dvdy = dg.dvdy;
this.Shape = dg.Shape;
}
public DifferentialGeometry(Point p, Vector dpdu, Vector dpdv, Normal dndu, Normal dndv, double u, double v, IShape shape)
{
this.p = new Point (p);
this.dpdu = new Vector (dpdu);
this.dpdv = new Vector (dpdv);
this.dndu = new Normal (dndu);
this.dndv = new Normal (dndv);
this.n = new Normal ((dpdu % dpdv).Normalized);
this.u = u;
this.v = v;
dudx = dvdx = dudy = dvdy = 0.0;
this.Shape = shape;
if (shape != null && (shape.ReverseOrientation ^ shape.TransformSwapsHandedness))
n *= -1.0;
}
public static AreaLight CreateAreaLight(string name, Transform objectToWorld, ParameterSet parameters, IShape shape)
{
AreaLightPlugin plugin = new AreaLightPlugin (name);
return plugin.CreateAreaLight (objectToWorld, parameters, shape);
}
public GeometricPrimitive(IShape shape, IMaterial material, AreaLight areaLight)
{
this.Shape = shape;
this.Material = material;
this.areaLight = areaLight;
}
