public Sphere(Point3 center, double radius, Material material)
: base(material)
{
this.Center = center;
this.Radius = radius;
this.Rinv = 1.0d/Radius;
this.material = material;
}
public Triangle (Point3 a, Point3 b, Point3 c, Point3 na, Point3 nb, Point3 nc, Point3 ta, Point3 tb, Point3 tc, Material material) : base(material) {
this.p0 = a;
this.p1 = b;
this.p2 = c;
if(na == null || nb == null || nc == null) {
Point3 norm = new Point3();
Point3.Cross(p1.X-p0.X, p1.Y-p0.Y, p1.Z-p0.Z, p2.X-p0.X, p2.Y-p0.Y, p2.Z-p0.Z, out norm.X, out norm.Y, out norm.Z);
norm.Normalize();
this.n0 = this.n1 = this.n2 = norm;
}
else {
this.n0 = na;
this.n1 = nb;
this.n2 = nc;
}
if(ta == null || tb == null || tc == null) {
this.t0 = Point3.DummyPoint;
this.t1 = Point3.DummyPoint;
this.t2 = Point3.DummyPoint;
this.bumpx = Point3.DummyPoint;
this.bumpy = Point3.DummyPoint;
}
else {
this.t0 = ta;
this.t1 = tb;
this.t2 = tc;
double txa = tb.X-ta.X;
double tya = tb.Y-ta.Y;
double txb = tc.X-ta.X;
double tyb = tc.Y-ta.Y;
double frac = txb*tya-txa*tyb;
double alpha, beta, gamma;
if(Math.Abs(frac) >= Maths.GlobalEpsilon) {
frac = 1.0d/frac;
alpha = -tyb*frac;
beta = tya*frac;
gamma = 1.0d-alpha-beta;
this.bumpx = new Point3(a.X*gamma+b.X*alpha+c.X*beta,
a.Y*gamma+b.Y*alpha+c.Y*beta,
a.Z*gamma+b.Z*alpha+c.Z*beta);
this.bumpx.Normalize();
alpha = txb*frac;
beta = -txa*frac;
gamma = 1.0d-alpha-beta;
this.bumpy = new Point3(a.X*gamma+b.X*alpha+c.X*beta,
a.Y*gamma+b.Y*alpha+c.Y*beta,
a.Z*gamma+b.Z*alpha+c.Z*beta);
this.bumpy.Normalize();
}
else {
this.bumpx = Point3.DummyPoint;
this.bumpy = Point3.DummyPoint;
}
}
}
public Face(double a, double b, double c, double d, Material material)
: base(material)
{
this.Normal = new Point3(a, b, c);
this.D = d;
}
public Triangle (Point3 a, Point3 b, Point3 c, Material material) : this(a,b,c,null,null,null,null,null,null,material) {
}
public OrderingRenderItem(Material material)
: base(material)
{
}
public void Copy(double t, Point3 norm, Material material, Point3 tu)
{
this.T = t;
this.Normal.SetValues(norm);
this.TU.SetValues(tu);
}
public RenderItem(Material material)
{
this.Material = material;
}