static void
sp_path_convert_to_guides(SPItem *item)
{
SPPath *path = SP_PATH(item);
if (!path->_curve) {
return;
}
std::list<std::pair<Geom::Point, Geom::Point> > pts;
Geom::Affine const i2dt(path->i2dt_affine());
Geom::PathVector const & pv = path->_curve->get_pathvector();
for(Geom::PathVector::const_iterator pit = pv.begin(); pit != pv.end(); ++pit) {
for(Geom::Path::const_iterator cit = pit->begin(); cit != pit->end_default(); ++cit) {
// only add curves for straight line segments
if( is_straight_curve(*cit) )
{
pts.push_back(std::make_pair(cit->initialPoint() * i2dt, cit->finalPoint() * i2dt));
}
}
}
sp_guide_pt_pairs_to_guides(item->document, pts);
}
/*
* sp_svg_write_polygon: Write points attribute for polygon tag.
* pathv may only contain paths with only straight line segments
* Return value: points attribute string.
*/
static gchar *sp_svg_write_polygon(Geom::PathVector const & pathv)
{
Inkscape::SVGOStringStream os;
for (Geom::PathVector::const_iterator pit = pathv.begin(); pit != pathv.end(); ++pit) {
for (Geom::Path::const_iterator cit = pit->begin(); cit != pit->end_default(); ++cit) {
if ( is_straight_curve(*cit) )
{
os << cit->finalPoint()[0] << "," << cit->finalPoint()[1] << " ";
} else {
g_error("sp_svg_write_polygon: polygon path contains non-straight line segments");
}
}
}
return g_strdup(os.str().c_str());
}
/* Calculates...
and returns ... in *wind and the distance to ... in *dist.
Returns bounding box in *bbox if bbox!=NULL.
*/
void
pathv_matrix_point_bbox_wind_distance (Geom::PathVector const & pathv, Geom::Affine const &m, Geom::Point const &pt,
Geom::Rect *bbox, int *wind, Geom::Coord *dist,
Geom::Coord tolerance, Geom::Rect const *viewbox)
{
if (pathv.empty()) {
if (wind) *wind = 0;
if (dist) *dist = Geom::infinity();
return;
}
// remember last point of last curve
Geom::Point p0(0,0);
// remembering the start of subpath
Geom::Point p_start(0,0);
bool start_set = false;
for (Geom::PathVector::const_iterator it = pathv.begin(); it != pathv.end(); ++it) {
if (start_set) { // this is a new subpath
if (wind && (p0 != p_start)) // for correct fill picking, each subpath must be closed
geom_line_wind_distance (p0[X], p0[Y], p_start[X], p_start[Y], pt, wind, dist);
}
p0 = it->initialPoint() * m;
p_start = p0;
start_set = true;
if (bbox) {
bbox->expandTo(p0);
}
// loop including closing segment if path is closed
for (Geom::Path::const_iterator cit = it->begin(); cit != it->end_default(); ++cit) {
geom_curve_bbox_wind_distance(*cit, m, pt, bbox, wind, dist, tolerance, viewbox, p0);
}
}
if (start_set) {
if (wind && (p0 != p_start)) // for correct picking, each subpath must be closed
geom_line_wind_distance (p0[X], p0[Y], p_start[X], p_start[Y], pt, wind, dist);
}
}