//--------------- Khu mat khuat ------------------
public static void khuMatKhuat(ref B_Rep w, Vector v)
{
Vector n;
for (int i = 0; i < w.nPoly - 2; i++)
{
n = w.poly[i].PVector;
if (n.x * v.x + n.y * v.y + n.z * v.z < 0) w.poly[i].Visible = 0;
else w.poly[i].Visible = 1;
}
}
public static void tinhPhapVector(ref B_Rep w, double phiTraiDat, double tetaTraiDat)
{
Point3D p1 = new Point3D();
Point3D p2 = new Point3D();
Point3D p3 = new Point3D();
Vector n = new Vector();
for (int i = 0; i < w.nPoly - 2; i++)
{
p1 = w.vert[w.poly[i].Vertexes[0]];
p2 = w.vert[w.poly[i].Vertexes[1]];
p3 = w.vert[w.poly[i].Vertexes[2]];
DoiHeToaDo(ref p1, 200, phiTraiDat, tetaTraiDat);
DoiHeToaDo(ref p2, 200, phiTraiDat, tetaTraiDat);
DoiHeToaDo(ref p3, 200, phiTraiDat, tetaTraiDat);
n.x = p1.y * (p2.z - p3.z) + p2.y * (p3.z - p1.z) + p3.y * (p1.z - p2.z);
n.y = p1.z * (p2.x - p3.x) + p2.z * (p3.x - p1.x) + p3.z * (p1.x - p2.x);
n.z = p1.x * (p2.y - p3.y) + p2.x * (p3.y - p1.y) + p3.x * (p1.y - p2.y);
w.poly[i].PVector = n;
}
}
public void khuMatKhuat(Vector vTraiDat)
{
Drawing.khuMatKhuat(ref this.wireFrame, vTraiDat);
}
