bool placement_finder::collision(const box2d<double> &box, const value_unicode_string &repeat_key, bool line_placement) const
{
double margin, repeat_distance;
if (line_placement)
{
margin = text_props_->margin * scale_factor_;
repeat_distance = (text_props_->repeat_distance != 0 ? text_props_->repeat_distance : text_props_->minimum_distance) * scale_factor_;
}
else
{
margin = (text_props_->margin != 0 ? text_props_->margin : text_props_->minimum_distance) * scale_factor_;
repeat_distance = text_props_->repeat_distance * scale_factor_;
}
return !detector_.extent().intersects(box)
||
(text_props_->avoid_edges && !extent_.contains(box))
||
(text_props_->minimum_padding > 0 &&
!extent_.contains(box + (scale_factor_ * text_props_->minimum_padding)))
||
(!text_props_->allow_overlap &&
((repeat_key.length() == 0 && !detector_.has_placement(box, margin))
||
(repeat_key.length() > 0 && !detector_.has_placement(box, margin, repeat_key, repeat_distance))));
}
bool group_symbolizer_helper::collision(box2d<double> const& box, value_unicode_string const& repeat_key) const
{
if (!detector_.extent().intersects(box)
||
(text_props_->avoid_edges && !dims_.contains(box))
||
(text_props_->minimum_padding > 0 &&
!dims_.contains(box + (scale_factor_ * text_props_->minimum_padding)))
||
(!text_props_->allow_overlap &&
((repeat_key.length() == 0 && !detector_.has_placement(box, text_props_->margin * scale_factor_))
||
(repeat_key.length() > 0 && !detector_.has_placement(box, text_props_->margin * scale_factor_,
repeat_key, text_props_->repeat_distance * scale_factor_))))
)
{
return true;
}
return false;
}
value_bool operator() (value_unicode_string const& ustr) const
{
return !ustr.isEmpty();
}
void operator() (value_unicode_string const& val) const
{
*tyPtr_ = value_type::unicode_string_type;
*retPtr_ = val.getBuffer();
*lenPtr_ = val.length();
}
// back compatibility shim to equate empty string with null for != test
// https://github.com/mapnik/mapnik/issues/1859
// TODO - consider removing entire specialization at Mapnik 3.1.x
static bool apply(value_null, value_unicode_string const& rhs)
{
if (rhs.isEmpty()) return false;
return true;
}
