public Polyhedron(Face[] _faces, Point3d _center)
{
faces = new Face[_faces.Length];
for (int i = 0; i < faces.Length; ++i)
{
faces[i] = _faces[i].Clone() as Face;
}
center = _center.Clone() as Point3d;
}
public void Can_BeCloned()
{
const double a = 3.3;
const double b = 2.2;
const double c = 4.11;
var ptA = new Point3d(a, b, c);
var ptClone = ptA.Clone();
Assert.False(ReferenceEquals(ptA, ptClone));
}
public IFigure Clone()
{
Polyhedron res = new Polyhedron();
res.faces = new Face[faces.Length];
for (int i = 0; i < faces.Length; ++i)
{
res.faces[i] = faces[i].Clone() as Face;
}
res.center = center.Clone() as Point3d;
return(res);
}
public override bool find_cross(Point3d cam_pos, Point3d ray_pos, ref Point3d t)
{
if (!sph.find_cross(cam_pos, ray_pos, ref t))
{
return(false);
}
double dist = double.MaxValue;
Point3d res = new Point3d();
bool flag = false;
foreach (var face in ph.Faces)
{
var p1 = face.Edges[0].First;
var p2 = face.Edges[1].First;
var p3 = face.Edges[2].First;
Vector v1 = new Vector(p1, p2);
Vector v2 = new Vector(p1, p3);
Vector n = v1[v2];
double d = -(n.X * p1.X + n.Y * p1.Y + n.Z * p1.Z);
Vector v = new Vector(cam_pos, ray_pos);
Vector u = new Vector(cam_pos);
double denum = n * v;
if (Math.Abs(denum) < eps)
{
continue;
}
double num = n * u + d;
double tp = -num / denum;
if (tp < eps)
{
continue;
}
t = new Point3d(
v.X * tp + u.X,
v.Y * tp + u.Y,
v.Z * tp + u.Z);
double square = 0;
int cnt = face.Edges.Count();
for (int i = 0; i < cnt; ++i)
{
square += triangle_square(face.Edges[i].First, face.Edges[(i + 1) % cnt].First, t);
}
if (Math.Abs(squares[face] - square) > eps)
{
continue;
}
var dist_t = new Vector(cam_pos, t).Norm();
if (dist_t < dist)
{
res = t.Clone() as Point3d;
dist = dist_t;
flag = true;
}
}
t = res.Clone() as Point3d;
return(flag);
}
/**
* Constructor for a ray
*
* @param direction direction ray
* @param point beginning of the ray
*/
public Line(Vector3d direction, Point3d point)
{
this.direction = direction.Clone();
this.point = point.Clone();
direction.normalize();
}
//-----------------------------------SETS---------------------------------------//
/**
* Sets a new point
*
* @param point new point
*/
public void setPoint(Point3d point)
{
this.point = point.Clone();
}