------------------------------------------------------------------------
| 65 | |
| 66 | //------------------------------------------------------------------------ |
| 67 | void vcgen_bspline::rewind(unsigned) |
| 68 | { |
| 69 | m_cur_abscissa = 0.0; |
| 70 | m_max_abscissa = 0.0; |
| 71 | m_src_vertex = 0; |
| 72 | if(m_status == initial && m_src_vertices.size() > 2) |
| 73 | { |
| 74 | if(m_closed) |
| 75 | { |
| 76 | m_spline_x.init(m_src_vertices.size() + 8); |
| 77 | m_spline_y.init(m_src_vertices.size() + 8); |
| 78 | m_spline_x.add_point(0.0, m_src_vertices.prev(m_src_vertices.size() - 3).x); |
| 79 | m_spline_y.add_point(0.0, m_src_vertices.prev(m_src_vertices.size() - 3).y); |
| 80 | m_spline_x.add_point(1.0, m_src_vertices[m_src_vertices.size() - 3].x); |
| 81 | m_spline_y.add_point(1.0, m_src_vertices[m_src_vertices.size() - 3].y); |
| 82 | m_spline_x.add_point(2.0, m_src_vertices[m_src_vertices.size() - 2].x); |
| 83 | m_spline_y.add_point(2.0, m_src_vertices[m_src_vertices.size() - 2].y); |
| 84 | m_spline_x.add_point(3.0, m_src_vertices[m_src_vertices.size() - 1].x); |
| 85 | m_spline_y.add_point(3.0, m_src_vertices[m_src_vertices.size() - 1].y); |
| 86 | } |
| 87 | else |
| 88 | { |
| 89 | m_spline_x.init(m_src_vertices.size()); |
| 90 | m_spline_y.init(m_src_vertices.size()); |
| 91 | } |
| 92 | unsigned i; |
| 93 | for(i = 0; i < m_src_vertices.size(); i++) |
| 94 | { |
| 95 | double x = m_closed ? i + 4 : i; |
| 96 | m_spline_x.add_point(x, m_src_vertices[i].x); |
| 97 | m_spline_y.add_point(x, m_src_vertices[i].y); |
| 98 | } |
| 99 | m_cur_abscissa = 0.0; |
| 100 | m_max_abscissa = m_src_vertices.size() - 1; |
| 101 | if(m_closed) |
| 102 | { |
| 103 | m_cur_abscissa = 4.0; |
| 104 | m_max_abscissa += 5.0; |
| 105 | m_spline_x.add_point(m_src_vertices.size() + 4, m_src_vertices[0].x); |
| 106 | m_spline_y.add_point(m_src_vertices.size() + 4, m_src_vertices[0].y); |
| 107 | m_spline_x.add_point(m_src_vertices.size() + 5, m_src_vertices[1].x); |
| 108 | m_spline_y.add_point(m_src_vertices.size() + 5, m_src_vertices[1].y); |
| 109 | m_spline_x.add_point(m_src_vertices.size() + 6, m_src_vertices[2].x); |
| 110 | m_spline_y.add_point(m_src_vertices.size() + 6, m_src_vertices[2].y); |
| 111 | m_spline_x.add_point(m_src_vertices.size() + 7, m_src_vertices.next(2).x); |
| 112 | m_spline_y.add_point(m_src_vertices.size() + 7, m_src_vertices.next(2).y); |
| 113 | } |
| 114 | m_spline_x.prepare(); |
| 115 | m_spline_y.prepare(); |
| 116 | } |
| 117 | m_status = ready; |
| 118 | } |
| 119 | |
| 120 | |
| 121 |