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#pragma once
#include <mbgl/geometry/anchor.hpp>
#include <mbgl/text/shaping.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
#include <mbgl/geometry/feature_index.hpp>
#include <vector>
namespace mbgl {
class CollisionBox {
public:
CollisionBox(Point<float> _anchor, float _x1, float _y1, float _x2, float _y2, float _maxScale) :
anchor(std::move(_anchor)), x1(_x1), y1(_y1), x2(_x2), y2(_y2), maxScale(_maxScale) {}
// the box is centered around the anchor point
Point<float> anchor;
// distances to the edges from the anchor
float x1;
float y1;
float x2;
float y2;
// the box is only valid for scales < maxScale.
// The box does not block other boxes at scales >= maxScale;
float maxScale;
// the scale at which the label can first be shown
float placementScale = 0.0f;
};
class CollisionFeature {
public:
enum class AlignmentType : bool {
Straight = false,
Curved
};
// for text
CollisionFeature(const GeometryCoordinates& line,
const Anchor& anchor,
const Shaping& shapedText,
const float boxScale,
const float padding,
const style::SymbolPlacementType placement,
const IndexedSubfeature& indexedFeature_)
: CollisionFeature(line, anchor, shapedText.top, shapedText.bottom, shapedText.left, shapedText.right, boxScale, padding, placement, indexedFeature_, AlignmentType::Curved) {}
// for icons
CollisionFeature(const GeometryCoordinates& line,
const Anchor& anchor,
optional<PositionedIcon> shapedIcon,
const float boxScale,
const float padding,
const style::SymbolPlacementType placement,
const IndexedSubfeature& indexedFeature_)
: CollisionFeature(line, anchor,
(shapedIcon ? shapedIcon->top() : 0),
(shapedIcon ? shapedIcon->bottom() : 0),
(shapedIcon ? shapedIcon->left() : 0),
(shapedIcon ? shapedIcon->right() : 0),
boxScale, padding, placement, indexedFeature_, AlignmentType::Straight) {}
CollisionFeature(const GeometryCoordinates& line,
const Anchor&,
const float top,
const float bottom,
const float left,
const float right,
const float boxScale,
const float padding,
const style::SymbolPlacementType,
IndexedSubfeature,
const AlignmentType);
std::vector<CollisionBox> boxes;
IndexedSubfeature indexedFeature;
private:
void bboxifyLabel(const GeometryCoordinates& line, GeometryCoordinate& anchorPoint,
const int segment, const float length, const float height);
};
} // namespace mbgl
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