public Poliedro(Vertice[] Vertices, Cara[] Caras)
{
if (Vertices.GetUpperBound(0) >= 3) {
if (Caras.GetUpperBound(0) >= 3) {
mCaras = Caras;
for (int i = 0; i <= mCaras.GetUpperBound(0); i++) {
mCaras[i].Color = Color.White;
}
mVertices = Vertices;
mAutoRecalcularCajas = false;
AutoReclcNorms = true;
RecalcularCentro();
CalcularCarasVertices();
RecalcularDatosCaras();
RecalcularNormalesVertices();
mConstantesShading = new PhongShader();
mVertical = new Vector3D(0, 1, 0);
} else {
throw new ExcepcionPrimitiva3D("POLIEDRO (NEW): Un poliedro debe tener al menos 4 caras" + Constants.vbNewLine + "Numero de caras=" + Vertices.GetUpperBound(0) + 1);
}
} else {
throw new ExcepcionPrimitiva3D("POLIEDRO (NEW): Un poliedro debe tener al menos 4 vertices" + Constants.vbNewLine + "Numero de vertices=" + Vertices.GetUpperBound(0) + 1);
}
}
public void Shading(PhongShader Constantes, Foco3D[] Focos, Camara3D Camara)
{
mColorShading = Constantes.EcuacionPhong(Focos, mNormalSUR, mBaricentroSUR, mColor, Camara);
}
public void EstablecerConstantesShading(ref PhongShader Constantes)
{
mConstantesShading = Constantes;
}
public static Color EcuacionPhong(Foco3D[] Focos, PhongShader Constantes, Vector3D NormalSUR, Punto3D PuntoSUR, Color Color, Camara3D Camara)
{
Vector3D Rayo = null;
Vector3D Salida = null;
Vector3D Vista = null;
byte r = 0;
byte g = 0;
byte b = 0;
long rr = 0;
long gg = 0;
long bb = 0;
long trr = 0;
long tgg = 0;
long tbb = 0;
double Escalar = 0;
double Ambiente = 0;
double Difusa = 0;
double Especular = 0;
double AmbienteR = 0;
double DifusaR = 0;
double EspecularR = 0;
double AmbienteG = 0;
double DifusaG = 0;
double EspecularG = 0;
double AmbienteB = 0;
double DifusaB = 0;
double EspecularB = 0;
trr = 0;
tgg = 0;
tbb = 0;
Vista = new Vector3D(Camara.Posicion, PuntoSUR);
Vista.Normalizar();
Ambiente = Constantes.Ambiente;
NormalSUR.Normalizar();
for (long i = 0; i <= Focos.GetUpperBound(0); i++) {
Rayo = new Vector3D(Focos[i].Coordenadas, PuntoSUR);
Rayo = !Rayo.VectorUnitario;
Salida = (((2 * (NormalSUR * Rayo)) * NormalSUR) - Rayo).VectorUnitario;
Difusa = Focos[i].Intensidad * (Constantes.Difusa * (NormalSUR * Rayo));
Escalar = (Salida * Vista);
if (Escalar < 0) {
Especular = Math.Abs((Constantes.Especular * Math.Pow(Escalar, Constantes.ExponenteEspecular)));
} else {
Especular = 0;
}
AmbienteR = Ambiente * (Focos[i].Color.R / 255);
DifusaR = Difusa * (Focos[i].Color.R / 255);
EspecularR = Especular * (Focos[i].Color.R / 255);
AmbienteG = Ambiente * (Focos[i].Color.G / 255);
DifusaG = Difusa * (Focos[i].Color.G / 255);
EspecularG = Especular * (Focos[i].Color.G / 255);
AmbienteB = Ambiente * (Focos[i].Color.B / 255);
DifusaB = Difusa * (Focos[i].Color.B / 255);
EspecularB = Especular * (Focos[i].Color.B / 255);
rr = Color.R * (AmbienteR + DifusaR);
rr = rr + ((Focos[i].Color.R - rr) * EspecularR);
gg = Color.G * (AmbienteG + DifusaG);
gg = gg + ((Focos[i].Color.G - gg) * EspecularG);
bb = Color.B * (AmbienteB + DifusaB);
bb = bb + ((Focos[i].Color.B - bb) * EspecularB);
if (rr < 0)
rr = 0;
if (gg < 0)
gg = 0;
if (bb < 0)
bb = 0;
trr += rr;
tgg += gg;
tbb += bb;
}
if (trr > 255)
trr = 255;
if (trr < 0)
trr = 0;
if (tgg > 255)
tgg = 255;
if (tgg < 0)
tgg = 0;
if (tbb > 255)
tbb = 255;
if (tbb < 0)
tbb = 0;
r = trr;
g = tgg;
b = tbb;
return Color.FromArgb(255, r, g, b);
}
