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1 | // File gp_Trsf2d.lxx, JCV 08/01/91 |
| 2 | |
| 3 | #include <gp_Trsf.hxx> |
| 4 | #include <gp_Pnt2d.hxx> |
| 5 | |
| 6 | inline gp_Trsf2d::gp_Trsf2d () { |
| 7 | shape = gp_Identity; |
| 8 | scale = 1.0; |
| 9 | matrix.SetIdentity (); |
| 10 | loc.SetCoord (0.0, 0.0); |
| 11 | } |
| 12 | |
| 13 | inline gp_Trsf2d::gp_Trsf2d (const gp_Trsf& T) : |
| 14 | scale(T.ScaleFactor()), |
| 15 | shape(T.Form()), |
| 16 | loc(T.TranslationPart().X(),T.TranslationPart().Y()) |
| 17 | { |
| 18 | const gp_Mat& M = T.HVectorialPart(); |
| 19 | matrix(1,1) = M(1,1); |
| 20 | matrix(1,2) = M(1,2); |
| 21 | matrix(2,1) = M(2,1); |
| 22 | matrix(2,2) = M(2,2); |
| 23 | } |
| 24 | |
| 25 | inline void gp_Trsf2d::SetMirror(const gp_Pnt2d& P) |
| 26 | { |
| 27 | shape = gp_PntMirror; |
| 28 | scale = -1.0; |
| 29 | matrix.SetIdentity (); |
| 30 | loc = P.XY(); |
| 31 | loc.Multiply (2.0); |
| 32 | } |
| 33 | |
| 34 | inline void gp_Trsf2d::SetRotation (const gp_Pnt2d& P, |
| 35 | const Standard_Real Ang) |
| 36 | { |
| 37 | shape = gp_Rotation; |
| 38 | scale = 1.0; |
| 39 | loc = P.XY (); |
| 40 | loc.Reverse (); |
| 41 | matrix.SetRotation (Ang); |
| 42 | loc.Multiply (matrix); |
| 43 | loc.Add (P.XY()); |
| 44 | } |
| 45 | |
| 46 | inline void gp_Trsf2d::SetScale (const gp_Pnt2d& P, |
| 47 | const Standard_Real S) |
| 48 | { |
| 49 | shape = gp_Scale; |
| 50 | scale = S; |
| 51 | matrix.SetIdentity (); |
| 52 | loc = P.XY (); |
| 53 | loc.Multiply (1.0 - S); |
| 54 | } |
| 55 | |
| 56 | inline void gp_Trsf2d::SetTranslation(const gp_Vec2d& V) |
| 57 | { |
| 58 | shape = gp_Translation; |
| 59 | scale = 1.0; |
| 60 | matrix.SetIdentity (); |
| 61 | loc = V.XY (); |
| 62 | } |
| 63 | |
| 64 | inline void gp_Trsf2d::SetTranslation (const gp_Pnt2d& P1, |
| 65 | const gp_Pnt2d& P2) |
| 66 | { |
| 67 | shape = gp_Translation; |
| 68 | scale = 1.0; |
| 69 | matrix.SetIdentity (); |
| 70 | loc = (P2.XY()).Subtracted (P1.XY()); |
| 71 | } |
| 72 | |
| 73 | inline Standard_Boolean gp_Trsf2d::IsNegative() const |
| 74 | { return (matrix.Determinant() < 0.0); } |
| 75 | |
| 76 | inline const gp_XY& gp_Trsf2d::TranslationPart () const |
| 77 | { return loc; } |
| 78 | |
| 79 | inline const gp_Mat2d& gp_Trsf2d::HVectorialPart () const |
| 80 | { return matrix; } |
| 81 | |
| 82 | inline Standard_Real gp_Trsf2d::Value (const Standard_Integer Row, |
| 83 | const Standard_Integer Col) const |
| 84 | { |
| 85 | Standard_OutOfRange_Raise_if |
| 86 | (Row < 1 || Row > 2 || Col < 1 || Col > 3, " "); |
| 87 | if (Col < 3) return scale * matrix.Value (Row, Col); |
| 88 | else return loc.Coord (Row); |
| 89 | } |
| 90 | |
| 91 | inline gp_TrsfForm gp_Trsf2d::Form() const |
| 92 | { return shape; } |
| 93 | |
| 94 | inline Standard_Real gp_Trsf2d::ScaleFactor() const |
| 95 | { return scale; } |
| 96 | |
| 97 | inline gp_Trsf2d gp_Trsf2d::Inverted() const |
| 98 | { |
| 99 | gp_Trsf2d T = *this; |
| 100 | T.Invert(); |
| 101 | return T; |
| 102 | } |
| 103 | |
| 104 | inline gp_Trsf2d gp_Trsf2d::Multiplied (const gp_Trsf2d& T) const { |
| 105 | gp_Trsf2d Tresult(*this); |
| 106 | Tresult.Multiply(T); |
| 107 | return Tresult; |
| 108 | } |
| 109 | |
| 110 | inline gp_Trsf2d gp_Trsf2d::Powered (const Standard_Integer N) |
| 111 | { |
| 112 | gp_Trsf2d T = *this; |
| 113 | T.Power (N); |
| 114 | return T; |
| 115 | } |
| 116 | |
| 117 | inline void gp_Trsf2d::Transforms (Standard_Real& X, |
| 118 | Standard_Real& Y) const |
| 119 | { |
| 120 | gp_XY Doublet (X, Y); |
| 121 | Doublet.Multiply (matrix); |
| 122 | if (scale != 1.0) Doublet.Multiply (scale); |
| 123 | Doublet.Add(loc); |
| 124 | Doublet.Coord (X, Y); |
| 125 | } |
| 126 | |
| 127 | inline void gp_Trsf2d::Transforms (gp_XY& Coord) const |
| 128 | { |
| 129 | Coord.Multiply (matrix); |
| 130 | if (scale != 1.0) Coord.Multiply (scale); |
| 131 | Coord.Add(loc); |
| 132 | } |
| 133 | |
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