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implement 'avoid-adges' for markers placements (point placement)

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(TODO: support all placement types)
This commit is contained in:
artemp 2014-09-05 16:19:55 +01:00
parent 3cb047fc5c
commit 2727eddf90
7 changed files with 23 additions and 8 deletions
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6
include/mapnik/grid/grid_marker_helpers.hpp
View file

@ -80,10 +80,11 @@ struct raster_markers_rasterizer_dispatch_grid : mapnik::noncopyable
marker_placement_enum placement_method = get<marker_placement_enum>(sym_, keys::markers_placement_type, feature_, vars_, MARKER_POINT_PLACEMENT);
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
bool avoid_edges = get<bool>(sym_, keys::avoid_edges, feature_, vars_, false);
box2d<double> bbox(0,0, src_.width(), src_.height());
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
markers_placement_params params { bbox, marker_trans_, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_params params { bbox, marker_trans_, spacing * scale_factor_, max_error, allow_overlap, avoid_edges };
markers_placement_finder<T, label_collision_detector4> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;
@ -190,11 +191,12 @@ struct vector_markers_rasterizer_dispatch_grid : mapnik::noncopyable
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
double opacity = get<double>(sym_,keys::opacity, feature_, vars_, 1.0);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
bool avoid_edges = get<bool>(sym_, keys::avoid_edges, feature_, vars_, false);
coord2d center = bbox_.center();
agg::trans_affine_translation recenter(-center.x, -center.y);
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
markers_placement_params params { bbox_, marker_trans_, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_params params { bbox_, marker_trans_, spacing * scale_factor_, max_error, allow_overlap, avoid_edges };
markers_placement_finder<T, Detector> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;

6
include/mapnik/marker_helpers.hpp
View file

@ -111,13 +111,14 @@ struct vector_markers_rasterizer_dispatch : mapnik::noncopyable
marker_placement_enum placement_method = get<marker_placement_enum>(sym_, keys::markers_placement_type, feature_, vars_, MARKER_POINT_PLACEMENT);
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
bool avoid_edges = get<bool>(sym_, keys::avoid_edges, feature_, vars_, false);
double opacity = get<double>(sym_,keys::opacity, feature_, vars_, 1.0);
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
coord2d center = bbox_.center();
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine tr = recenter * marker_trans_;
markers_placement_params params { bbox_, tr, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_params params { bbox_, tr, spacing * scale_factor_, max_error, allow_overlap, avoid_edges };
markers_placement_finder<T, Detector> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;
@ -195,12 +196,13 @@ struct raster_markers_rasterizer_dispatch : mapnik::noncopyable
{
marker_placement_enum placement_method = get<marker_placement_enum>(sym_, keys::markers_placement_type, feature_, vars_, MARKER_POINT_PLACEMENT);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
bool avoid_edges = get<bool>(sym_, keys::avoid_edges, feature_, vars_, false);
box2d<double> bbox_(0,0, src_.width(),src_.height());
double opacity = get<double>(sym_, keys::opacity, feature_, vars_, 1.0);
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
markers_placement_params params { bbox_, marker_trans_, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_params params { bbox_, marker_trans_, spacing * scale_factor_, max_error, allow_overlap, avoid_edges };
markers_placement_finder<T, label_collision_detector4> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;

5
include/mapnik/markers_placements/point.hpp
View file

@ -37,6 +37,7 @@ struct markers_placement_params
double spacing;
double max_error;
bool allow_overlap;
bool avoid_edges;
};
template <typename Locator, typename Detector>
@ -87,6 +88,10 @@ public:
angle = 0;
box2d<double> box = perform_transform(angle, x, y);
if (params_.avoid_edges && !detector_.extent().contains(box))
{
return false;
}
if (!params_.allow_overlap && !detector_.has_placement(box))
{
return false;

1
include/mapnik/symbolizer_keys.hpp
View file

@ -90,6 +90,7 @@ enum class keys : std::uint8_t
justify_alignment,
vertical_alignment,
upright,
avoid_edges,
MAX_SYMBOLIZER_KEY
};

6
src/cairo/process_markers_symbolizer.cpp
View file

@ -81,13 +81,14 @@ struct markers_dispatch : mapnik::noncopyable
sym_, keys::markers_placement_type, feature_, vars_, MARKER_POINT_PLACEMENT);
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
bool avoid_edges = get<bool>(sym_, keys::avoid_edges, feature_, vars_, false);
double opacity = get<double>(sym_, keys::opacity, feature_, vars_, 1.0);
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
coord2d center = bbox_.center();
agg::trans_affine_translation recenter(-center.x, -center.y);
agg::trans_affine tr = recenter * marker_trans_;
markers_placement_params params { bbox_, tr, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_params params { bbox_, tr, spacing * scale_factor_, max_error, allow_overlap, avoid_edges };
markers_placement_finder<T, label_collision_detector4> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;
@ -148,9 +149,10 @@ struct raster_markers_dispatch : mapnik::noncopyable
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
bool avoid_edges = get<bool>(sym_, keys::avoid_edges, feature_, vars_, false);
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
box2d<double> bbox_(0,0, src_.width(),src_.height());
markers_placement_params params { bbox_, marker_trans_, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_params params { bbox_, marker_trans_, spacing * scale_factor_, max_error, allow_overlap, avoid_edges };
markers_placement_finder<T, label_collision_detector4> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;

2
src/load_map.cpp
View file

@ -957,6 +957,8 @@ void map_parser::parse_markers_symbolizer(rule & rule, xml_node const& node)
set_symbolizer_property<markers_symbolizer,double>(sym, keys::max_error, node);
// allow-overlap
set_symbolizer_property<markers_symbolizer,boolean_type>(sym, keys::allow_overlap, node);
// avoid-edges
set_symbolizer_property<markers_symbolizer,boolean_type>(sym, keys::avoid_edges, node);
// ignore-placement
set_symbolizer_property<markers_symbolizer,boolean_type>(sym, keys::ignore_placement, node);
// width

5
src/symbolizer_keys.cpp
View file

@ -116,7 +116,8 @@ static const property_meta_type key_meta[const_max_key] =
property_types::target_vertical_alignment},
property_meta_type{ "upright", enumeration_wrapper(UPRIGHT_AUTO), [](enumeration_wrapper e)
{return enumeration<text_upright_enum,text_upright_enum_MAX>(text_upright_enum(e.value)).as_string();},
property_types::target_upright}
property_types::target_upright},
property_meta_type{ "avoid-edges",false, nullptr, property_types::target_bool },
};
@ -141,4 +142,4 @@ mapnik::keys get_key(std::string const& name)
return static_cast<mapnik::keys>(0);
}
}
}