private void GetInfoCylindre()
{
if (Surface.IsCylinder())
{
Double[] Param = Surface.CylinderParams;
Origine = new gPoint(Param[0], Param[1], Param[2]);
Direction = new gVecteur(Param[3], Param[4], Param[5]);
Rayon = Param[6];
var UV = (Double[])SwFace.GetUVBounds();
Boolean Reverse = SwFace.FaceInSurfaceSense();
var ev1 = (Double[])Surface.Evaluate((UV[0] + UV[1]) * 0.5, (UV[2] + UV[3]) * 0.5, 0, 0);
if (Reverse)
{
ev1[3] = -ev1[3];
ev1[4] = -ev1[4];
ev1[5] = -ev1[5];
}
Normale = new gVecteur(ev1[3], ev1[4], ev1[5]);
}
}