mirror of
https://github.com/NGSolve/netgen.git
synced 2024-09-22 17:52:50 +05:00
100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
namespace netgen
|
|
{
|
|
|
|
///
|
|
class splinesegment3d
|
|
{
|
|
///
|
|
Point<3> p1, p2, p3;
|
|
|
|
public:
|
|
///
|
|
splinesegment3d (const Point<3> & ap1, const Point<3> & ap2,
|
|
const Point<3> & ap3);
|
|
///
|
|
void Evaluate (double t, Point<3> & p) const;
|
|
///
|
|
void EvaluateTangent (double t, Vec<3> & tang) const;
|
|
///
|
|
const Point<3> & P1() const { return p1; }
|
|
///
|
|
const Point<3> & P2() const { return p2; }
|
|
///
|
|
const Point<3> & P3() const { return p3; }
|
|
};
|
|
|
|
///
|
|
class spline3d
|
|
{
|
|
///
|
|
Array<splinesegment3d *> segments;
|
|
|
|
public:
|
|
///
|
|
spline3d () { };
|
|
///
|
|
void AddSegment (const Point<3> & ap1, const Point<3> & ap2, const Point<3> & ap3);
|
|
///
|
|
int GetNumSegments () const { return segments.Size(); }
|
|
///
|
|
double ProjectToSpline (Point<3> & p) const;
|
|
///
|
|
double ProjectToSpline (Point<3> & p, double t) const;
|
|
///
|
|
void Evaluate (double t, Point<3> & p) const;
|
|
///
|
|
void EvaluateTangent (double t, Vec<3> & tang) const;
|
|
///
|
|
const Point<3> & P1(int i) const { return segments.Get(i)->P1(); }
|
|
///
|
|
const Point<3> & P2(int i) const { return segments.Get(i)->P2(); }
|
|
///
|
|
const Point<3> & P3(int i) const { return segments.Get(i)->P3(); }
|
|
};
|
|
|
|
///
|
|
class splinetube : public Surface
|
|
{
|
|
///
|
|
const spline3d & middlecurve;
|
|
///
|
|
double r;
|
|
/// Vec<3> ex, ey, ez;
|
|
Vec<2> e2x, e2y;
|
|
///
|
|
Point<3> cp;
|
|
|
|
public:
|
|
///
|
|
splinetube (const spline3d & amiddlecurve, double ar);
|
|
|
|
///
|
|
virtual void DefineTangentialPlane (const Point<3> & ap1, const Point<3> & ap2);
|
|
///
|
|
virtual void ToPlane (const Point<3> & p, Point<2> & pplain, double h, int & zone) const;
|
|
///
|
|
virtual void FromPlane (const Point<2> & pplain, Point<3> & p, double h) const;
|
|
///
|
|
virtual void Project (Point<3> & p) const;
|
|
|
|
// virtual int RootInBox (const box3d & box) const { return 0; }
|
|
/// 0 .. no, 1 .. yes, 2 .. maybe
|
|
|
|
virtual int BoxInSolid (const BoxSphere<3> & box) const;
|
|
/// 0 .. no, 1 .. yes, 2 .. maybe
|
|
|
|
virtual double CalcFunctionValue (const Point<3> & point) const;
|
|
///
|
|
virtual void CalcGradient (const Point<3> & point, Vec<3> & grad) const;
|
|
///
|
|
virtual double HesseNorm () const { return 0.5 / r; }
|
|
///
|
|
virtual Point<3> GetSurfacePoint () const;
|
|
///
|
|
virtual void Print (ostream & str) const;
|
|
};
|
|
|
|
|
|
}
|
|
|