unsigned vertex(double* x, double* y) { unsigned cmd = m_src->vertex(x, y); if(is_vertex(cmd)) ++m_points; if(is_move_to(cmd)) ++m_contours; return cmd; }
//------------------------------------------------------------------------ void vcgen_contour::add_vertex(double x, double y, unsigned cmd) { m_status = initial; if(is_move_to(cmd)) { m_src_vertices.modify_last(vertex_dist(x, y)); } else { if(is_vertex(cmd)) { m_src_vertices.add(vertex_dist(x, y)); } else { if(is_end_poly(cmd)) { m_closed = get_close_flag(cmd); if(m_orientation == path_flags_none) { m_orientation = get_orientation(cmd); } } } } }
void vcgen_stroke::add_vertex(FX_FLOAT x, FX_FLOAT y, unsigned cmd) { m_status = initial; if(is_move_to(cmd)) { m_src_vertices.modify_last(vertex_dist_cmd(x, y, cmd)); } else { if(is_vertex(cmd)) { m_src_vertices.add(vertex_dist_cmd(x, y, cmd)); } else { m_closed = get_close_flag(cmd); } } }
//------------------------------------------------------------------------ void vcgen_bspline::add_vertex(double x, double y, unsigned cmd) { m_status = initial; if(is_move_to(cmd)) { m_src_vertices.modify_last(point_d(x, y)); } else { if(is_vertex(cmd)) { m_src_vertices.add(point_d(x, y)); } else { m_closed = get_close_flag(cmd); } } }
//------------------------------------------------------------------------ void vcgen_smooth_poly1::add_vertex(double x, double y, unsigned cmd) { m_status = initial; if(is_move_to(cmd)) { m_src_vertices.modify_last(vertex_dist(x, y)); } else { if(is_vertex(cmd)) { m_src_vertices.add(vertex_dist(x, y)); } else { m_closed = get_close_flag(cmd); } } }
//------------------------------------------------------------------------ void vcgen_markers_term::add_vertex(double x, double y, unsigned cmd) { if(is_move_to(cmd)) { if(m_markers.size() & 1) { // Initial state, the first coordinate was added. // If two of more calls of start_vertex() occures // we just modify the last one. m_markers.modify_last(coord_type(x, y)); } else { m_markers.add(coord_type(x, y)); } } else { if(is_vertex(cmd)) { if(m_markers.size() & 1) { // Initial state, the first coordinate was added. // Add three more points, 0,1,1,0 m_markers.add(coord_type(x, y)); m_markers.add(m_markers[m_markers.size() - 1]); m_markers.add(m_markers[m_markers.size() - 3]); } else { if(m_markers.size()) { // Replace two last points: 0,1,1,0 -> 0,1,2,1 m_markers[m_markers.size() - 1] = m_markers[m_markers.size() - 2]; m_markers[m_markers.size() - 2] = coord_type(x, y); } } } } }
double path_length(VertexSource& vs, unsigned path_id = 0) { double len = 0.0; double start_x = 0.0; double start_y = 0.0; double x1 = 0.0; double y1 = 0.0; double x2 = 0.0; double y2 = 0.0; bool first = true; unsigned cmd; vs.rewind(path_id); while(!is_stop(cmd = vs.vertex(&x2, &y2))) { if(is_vertex(cmd)) { if(first || is_move_to(cmd)) { start_x = x2; start_y = y2; } else { len += calc_distance(x1, y1, x2, y2); } x1 = x2; y1 = y2; first = false; } else { if(is_close(cmd) && !first) { len += calc_distance(x1, y1, start_x, start_y); } } } return len; }
unsigned conv_adaptor_vpgen<VertexSource, VPGen>::vertex(double* x, double* y) { unsigned cmd = path_cmd_stop; for(;;) { cmd = m_vpgen.vertex(x, y); if(!is_stop(cmd)) break; if(m_poly_flags && !m_vpgen.auto_unclose()) { *x = 0.0; *y = 0.0; cmd = m_poly_flags; m_poly_flags = 0; break; } if(m_vertices < 0) { if(m_vertices < -1) { m_vertices = 0; return path_cmd_stop; } m_vpgen.move_to(m_start_x, m_start_y); m_vertices = 1; continue; } double tx, ty; cmd = m_source->vertex(&tx, &ty); if(is_vertex(cmd)) { if(is_move_to(cmd)) { if(m_vpgen.auto_close() && m_vertices > 2) { m_vpgen.line_to(m_start_x, m_start_y); m_poly_flags = path_cmd_end_poly | path_flags_close; m_start_x = tx; m_start_y = ty; m_vertices = -1; continue; } m_vpgen.move_to(tx, ty); m_start_x = tx; m_start_y = ty; m_vertices = 1; } else { m_vpgen.line_to(tx, ty); ++m_vertices; } } else { if(is_end_poly(cmd)) { m_poly_flags = cmd; if(is_closed(cmd) || m_vpgen.auto_close()) { if(m_vpgen.auto_close()) m_poly_flags |= path_flags_close; if(m_vertices > 2) { m_vpgen.line_to(m_start_x, m_start_y); } m_vertices = 0; } } else { // path_cmd_stop if(m_vpgen.auto_close() && m_vertices > 2) { m_vpgen.line_to(m_start_x, m_start_y); m_poly_flags = path_cmd_end_poly | path_flags_close; m_vertices = -2; continue; } break; } } } return cmd; }