Geom::OptRect
bounds_exact_transformed(Geom::PathVector const & pv, Geom::Affine const & t)
{
if (pv.empty())
return Geom::OptRect();
Geom::Point initial = pv.front().initialPoint() * t;
Geom::Rect bbox(initial, initial); // obtain well defined bbox as starting point to unionWith
for (Geom::PathVector::const_iterator it = pv.begin(); it != pv.end(); ++it) {
bbox.expandTo(it->initialPoint() * t);
// don't loop including closing segment, since that segment can never increase the bbox
for (Geom::Path::const_iterator cit = it->begin(); cit != it->end_open(); ++cit) {
Geom::Curve const &c = *cit;
unsigned order = 0;
if (Geom::BezierCurve const* b = dynamic_cast<Geom::BezierCurve const*>(&c)) {
order = b->order();
}
if (order == 1) { // line segment
bbox.expandTo(c.finalPoint() * t);
// TODO: we can make the case for quadratics faster by degree elevating them to
// cubic and then taking the bbox of that.
} else if (order == 3) { // cubic bezier
Geom::CubicBezier const &cubic_bezier = static_cast<Geom::CubicBezier const&>(c);
Geom::Point c0 = cubic_bezier[0] * t;
Geom::Point c1 = cubic_bezier[1] * t;
Geom::Point c2 = cubic_bezier[2] * t;
Geom::Point c3 = cubic_bezier[3] * t;
cubic_bbox(c0[0], c0[1], c1[0], c1[1], c2[0], c2[1], c3[0], c3[1], bbox);
} else {
// should handle all not-so-easy curves:
Geom::Curve *ctemp = cit->transformed(t);
bbox.unionWith( ctemp->boundsExact());
delete ctemp;
}
}
}
//return Geom::bounds_exact(pv * t);
return bbox;
}
Geom::OptRect
bounds_exact_transformed(Geom::PathVector const & pv, Geom::Affine const & t)
{
if (pv.empty())
return Geom::OptRect();
Geom::Point initial = pv.front().initialPoint() * t;
Geom::Rect bbox(initial, initial); // obtain well defined bbox as starting point to unionWith
for (Geom::PathVector::const_iterator it = pv.begin(); it != pv.end(); ++it) {
bbox.expandTo(it->initialPoint() * t);
// don't loop including closing segment, since that segment can never increase the bbox
for (Geom::Path::const_iterator cit = it->begin(); cit != it->end_open(); ++cit) {
Geom::Curve const &c = *cit;
if( is_straight_curve(c) )
{
bbox.expandTo( c.finalPoint() * t );
}
else if(Geom::CubicBezier const *cubic_bezier = dynamic_cast<Geom::CubicBezier const *>(&c))
{
Geom::Point c0 = (*cubic_bezier)[0] * t;
Geom::Point c1 = (*cubic_bezier)[1] * t;
Geom::Point c2 = (*cubic_bezier)[2] * t;
Geom::Point c3 = (*cubic_bezier)[3] * t;
cubic_bbox( c0[0], c0[1],
c1[0], c1[1],
c2[0], c2[1],
c3[0], c3[1],
bbox );
}
else
{
// should handle all not-so-easy curves:
Geom::Curve *ctemp = cit->transformed(t);
bbox.unionWith( ctemp->boundsExact());
delete ctemp;
}
}
}
//return Geom::bounds_exact(pv * t);
return bbox;
}