/usr/include/opencascade/gp_Parab.lxx is in libopencascade-foundation-dev 6.5.0.dfsg-2build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | //File gp_Parab.lxx JCV/12/10/90
#include <gp_Lin.hxx>
#include <Standard_ConstructionError.hxx>
inline gp_Parab::gp_Parab () :
focalLength (RealLast())
{ }
inline gp_Parab::gp_Parab (const gp_Ax2& A2,
const Standard_Real Focal) :
pos(A2),
focalLength (Focal)
{ Standard_ConstructionError_Raise_if(Focal < 0.0,""); }
inline gp_Parab::gp_Parab (const gp_Ax1& D,
const gp_Pnt& F)
{
gp_Lin Droite(D);
focalLength = Droite.Distance(F) / 2.;
gp_Ax1 Ax = Droite.Normal(F).Position();
gp_Ax1 Ay = Droite.Position();
const gp_Dir& DD = Ax.Direction();
pos = gp_Ax2 (gp_Pnt(F.X() - focalLength * DD.X(),
F.Y() - focalLength * DD.Y(),
F.Z() - focalLength * DD.Z()),
Ax.Direction().Crossed(Ay.Direction()),
Ax.Direction());
}
inline void gp_Parab::SetAxis (const gp_Ax1& A1)
{ pos.SetAxis (A1); }
inline void gp_Parab::SetFocal (const Standard_Real Focal)
{
Standard_ConstructionError_Raise_if(Focal < 0.0,"");
focalLength = Focal;
}
inline void gp_Parab::SetLocation (const gp_Pnt& P)
{ pos.SetLocation(P); }
inline void gp_Parab::SetPosition (const gp_Ax2& A2)
{ pos = A2; }
inline const gp_Ax1& gp_Parab::Axis () const
{ return pos.Axis(); }
inline gp_Ax1 gp_Parab::Directrix() const
{
const gp_Pnt& PP = pos.Location ();
const gp_Dir& DD = pos.XDirection();
gp_Pnt P (PP.X() - focalLength * DD.X(),
PP.Y() - focalLength * DD.Y(),
PP.Z() - focalLength * DD.Z());
return gp_Ax1 (P, pos.YDirection());
}
inline Standard_Real gp_Parab::Focal() const
{ return focalLength; }
inline gp_Pnt gp_Parab::Focus() const
{
const gp_Pnt& PP = pos.Location ();
const gp_Dir& DD = pos.XDirection();
return gp_Pnt (PP.X() + focalLength * DD.X(),
PP.Y() + focalLength * DD.Y(),
PP.Z() + focalLength * DD.Z());
}
inline const gp_Pnt& gp_Parab::Location () const
{ return pos.Location(); }
inline Standard_Real gp_Parab::Parameter() const
{ return 2.0 * focalLength; }
inline const gp_Ax2& gp_Parab::Position() const
{ return pos; }
inline gp_Ax1 gp_Parab::XAxis () const
{ return gp_Ax1 (pos.Location(), pos.XDirection()); }
inline gp_Ax1 gp_Parab::YAxis () const
{ return gp_Ax1 (pos.Location(), pos.YDirection()); }
inline void gp_Parab::Rotate (const gp_Ax1& A1,
const Standard_Real Ang)
{ pos.Rotate (A1, Ang); }
inline gp_Parab gp_Parab::Rotated (const gp_Ax1& A1,
const Standard_Real Ang) const
{
gp_Parab Prb = *this;
Prb.pos.Rotate (A1, Ang);
return Prb;
}
inline void gp_Parab::Scale (const gp_Pnt& P,
const Standard_Real S)
{
focalLength *= S;
if (focalLength < 0) focalLength = - focalLength;
pos.Scale (P, S);
}
inline gp_Parab gp_Parab::Scaled (const gp_Pnt& P,
const Standard_Real S) const
{
gp_Parab Prb = *this;
Prb.focalLength *= S;
if (Prb.focalLength < 0) Prb.focalLength = - Prb.focalLength;
Prb.pos.Scale (P, S);
return Prb;
}
inline void gp_Parab::Transform (const gp_Trsf& T)
{
focalLength *= T.ScaleFactor();
if (focalLength < 0) focalLength = - focalLength;
pos.Transform (T);
}
inline gp_Parab gp_Parab::Transformed (const gp_Trsf& T) const
{
gp_Parab Prb = *this;
Prb.focalLength *= T.ScaleFactor();
if (Prb.focalLength < 0) Prb.focalLength = - Prb.focalLength;
Prb.pos.Transform (T);
return Prb;
}
inline void gp_Parab::Translate (const gp_Vec& V)
{ pos.Translate (V); }
inline gp_Parab gp_Parab::Translated (const gp_Vec& V) const
{
gp_Parab Prb = *this;
Prb.pos.Translate (V);
return Prb;
}
inline void gp_Parab::Translate (const gp_Pnt& P1,
const gp_Pnt& P2)
{ pos.Translate (P1, P2); }
inline gp_Parab gp_Parab::Translated (const gp_Pnt& P1,
const gp_Pnt& P2) const
{
gp_Parab Prb = *this;
Prb.pos.Translate (P1, P2);
return Prb;
}
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