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;
}
