2 offset.hh -- part of GNU LilyPond
4 (c) 1996--2004 Han-Wen Nienhuys
10 #include "flower-proto.hh"
13 #include "arithmetic-operator.hh"
16 Offset complex_multiply (Offset, Offset);
17 Offset complex_divide (Offset, Offset);
18 Offset complex_exp (Offset);
22 should change to Complex -- how is vector == complex?
29 Real coordinate_a_[NO_AXES];
31 Real &operator[] (Axis i)
33 return coordinate_a_[i];
36 Real operator[] (Axis i) const
38 return coordinate_a_[i];
41 Offset& operator+= (Offset o)
43 (*this)[X_AXIS] += o[X_AXIS];
44 (*this)[Y_AXIS] += o[Y_AXIS];
48 Offset operator - () const
52 o[X_AXIS] = - o[X_AXIS];
53 o[Y_AXIS] = - o[Y_AXIS];
57 Offset& operator-= (Offset o)
59 (*this)[X_AXIS] -= o[X_AXIS];
60 (*this)[Y_AXIS] -= o[Y_AXIS];
65 Offset &scale (Offset o)
67 (*this)[X_AXIS] *= o[X_AXIS];
68 (*this)[Y_AXIS] *= o[Y_AXIS];
73 Offset &operator *= (Real a)
81 Offset (Real ix , Real iy)
83 coordinate_a_[X_AXIS] =ix;
84 coordinate_a_[Y_AXIS] =iy;
89 coordinate_a_[X_AXIS] = coordinate_a_[Y_AXIS]= 0.0;
92 String to_string () const;
94 Offset& mirror (Axis a)
96 coordinate_a_[a] = - coordinate_a_[a];
101 Real length () const;
103 //wtf, How is Offset a Complex? is this used?
104 Offset operator *= (Offset z2)
106 *this = complex_multiply (*this,z2);
112 IMPLEMENT_ARITHMETIC_OPERATOR (Offset, +);
113 IMPLEMENT_ARITHMETIC_OPERATOR (Offset, -);
114 IMPLEMENT_ARITHMETIC_OPERATOR (Offset, *);
117 operator* (Real o1, Offset o2)
124 operator* (Offset o1, Real o2)
131 mirror (Offset o, Axis a)
138 #endif /* OFFSET_HH */