Developer Documentation

BSplineWriters.cc
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40 \*===========================================================================*/
41
42
43
44 #include "FileOBJ.hh"
45
46
47 #ifdef ENABLE_BSPLINECURVE_SUPPORT
48 bool FileOBJPlugin::writeCurve(std::ostream& _out, QString _filename, BSplineCurve* _curve )
49 {
50 if ( !OpenFlipper::Options::savingSettings() && saveOptions_ != 0) {
51 _out.precision(savePrecision_->value());
52 }
53
54 _out << "# " << _filename.toStdString() << "\n";
55
56 // save control points (coordinates)
57 for (uint i = 0; i < _curve->n_control_points(); ++i){
58 ACG::Vec3d cp = _curve->get_control_point(i);
59 _out << "v " << cp[0] << " " << cp[1] << " " << cp[2] << "\n";
60 }
61
62 _out << "cstype bspline\n";
63 _out << "deg " << _curve->degree() << "\n";
64 _out << "g " << _filename.toStdString() << "\n";
65
66 // save control polygon
67 _out << "curv " << _curve->get_knot(0) << " " << _curve->get_knot(_curve->n_knots()-1) << " ";
68 // save control point indices
69 for (unsigned int i = 0; i < _curve->n_control_points(); ++i)
70 _out << i+1 << " "; // obj enumerates the cps starting with 1
71 _out << "\n";
72
73 _out << "parm u ";
74 // save knotvector
75 for (unsigned int i = 0; i < _curve->n_knots(); ++i)
76 _out << _curve->get_knot(i) << " ";
77 _out << "\n";
78
79 _out << "end";
80
81 return true;
82 }
83 #endif
84
85 #ifdef ENABLE_BSPLINESURFACE_SUPPORT
86 bool FileOBJPlugin::writeSurface(std::ostream& _out, QString _filename, BSplineSurface* _surface ){
87 if ( !OpenFlipper::Options::savingSettings() && saveOptions_ != 0) {
88 _out.precision(savePrecision_->value());
89 }
90
91 _out << "# " << _filename.toStdString() << "\n";
92
93 // save control net (coordinates)
94 unsigned int num_cp_m = _surface->n_control_points_m();
95 unsigned int num_cp_n = _surface->n_control_points_n();
96
97 for (unsigned int i = 0; i < num_cp_m; ++i)
98 {
99 for (unsigned int j = 0; j < num_cp_n; ++j)
100 {
101 ACG::Vec3d cp = (*_surface)(i,j);
102 _out << "v " << cp[0] << " " << cp[1] << " " << cp[2] << "\n";
103 }
104 }
105
106 _out << "cstype bspline\n";
107 _out << "deg " << _surface->degree_m() << " " << _surface->degree_n() << "\n";
108 _out << "g " << _filename.toStdString() << "\n";
109
110 // save control polygon
111 _out << "surf " << _surface->get_knot_m(0) << " " << _surface->get_knot_m(_surface->n_knots_m()-1) << " "
112 << _surface->get_knot_n(0) << " " << _surface->get_knot_n(_surface->n_knots_n()-1) << " ";
113
114 // save control point indices
115 for (unsigned int j = 0; j < num_cp_n; ++j)
116 for (unsigned int i = 0; i < num_cp_m; ++i)
117 _out << (i*num_cp_n) + j+1 << " "; // obj enumerates the cps starting with 1
118
119 _out << "\n";
120
121 _out << "parm u ";
122 // save knotvector in m direction
123 for (unsigned int i = 0; i < _surface->n_knots_m(); ++i)
124 _out << _surface->get_knot_m(i) << " ";
125 _out << "\n";
126
127 _out << "parm v ";
128 // save knotvector in n direction
129 for (unsigned int i = 0; i < _surface->n_knots_n(); ++i)
130 _out << _surface->get_knot_n(i) << " ";
131 _out << "\n";
132
133 _out << "end";
134
135 return true;
136 }
137
138 #endif
139
ACG::BSplineSurfaceT::degree_m
int degree_m() const
Returns the spline degree in m direction.
Definition: BSplineSurfaceT.hh:172
ACG::BSplineCurveT::n_knots
unsigned int n_knots() const
Returns the number of knots.
Definition: BSplineCurveT.hh:167
ACG::BSplineSurfaceT::n_control_points_n
unsigned int n_control_points_n() const
Returns the number of controlpoints in n direction.
Definition: BSplineSurfaceT.hh:179
ACG::BSplineCurveT::degree
unsigned int degree() const
Returns the spline degree.
Definition: BSplineCurveT.hh:170
OpenMesh::VectorT
Definition: Vector11T.hh:83
ACG::BSplineSurfaceT::n_control_points_m
unsigned int n_control_points_m() const
Returns the number of controlpoints in m direction.
Definition: BSplineSurfaceT.hh:177
ACG::BSplineSurfaceT::n_knots_n
unsigned int n_knots_n()
Returns the number of knots in n direction.
Definition: BSplineSurfaceT.hh:184
ACG::BSplineCurveT::n_control_points
unsigned int n_control_points() const
Returns the number of control points.
Definition: BSplineCurveT.hh:164
ACG::BSplineCurveT::get_control_point
Point & get_control_point(int _i)
get control point i
Definition: BSplineCurveT.hh:115
ACG::BSplineSurfaceT::n_knots_m
unsigned int n_knots_m()
Returns the number of knots in m direction.
Definition: BSplineSurfaceT.hh:182
ACG::BSplineCurveT
Definition: BSplineCurveT.hh:82
ACG::BSplineSurfaceT
Definition: BSplineSurfaceT.hh:82
ACG::BSplineSurfaceT::get_knot_m
Scalar get_knot_m(int _i)
Get knot i in m direction.
Definition: BSplineSurfaceT.hh:127
ACG::BSplineSurfaceT::degree_n
int degree_n() const
Returns the spline degree in n direction.
Definition: BSplineSurfaceT.hh:174
ACG::BSplineCurveT::get_knot
Scalar get_knot(int _i)
get knot i
Definition: BSplineCurveT.hh:112
ACG::BSplineSurfaceT::get_knot_n
Scalar get_knot_n(int _i)
Get knot i in n direction.
Definition: BSplineSurfaceT.hh:134