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#ifndef MBGL_TEXT_COLLISION_FEATURE
#define MBGL_TEXT_COLLISION_FEATURE
#include <mbgl/util/vec.hpp>
#include <mbgl/geometry/anchor.hpp>
#include <mbgl/text/shaping.hpp>
#include <vector>
namespace mbgl {
class CollisionBox {
public:
explicit CollisionBox(const vec2<float> &_anchor, float _x1, float _y1, float _x2, float _y2, float _maxScale) :
anchor(_anchor), x1(_x1), y1(_y1), x2(_x2), y2(_y2), maxScale(_maxScale) {}
// the box is centered around the anchor point
vec2<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:
// for text
inline explicit CollisionFeature(const std::vector<Coordinate> &line, const Anchor &anchor,
const Shaping &shapedText,
const float boxScale, const float padding, const bool alongLine)
: CollisionFeature(line, anchor,
shapedText.top, shapedText.bottom, shapedText.left, shapedText.right,
boxScale, padding, alongLine) {}
// for icons
inline explicit CollisionFeature(const std::vector<Coordinate> &line, const Anchor &anchor,
const PositionedIcon &shapedIcon,
const float boxScale, const float padding, const bool alongLine)
: CollisionFeature(line, anchor,
shapedIcon.top, shapedIcon.bottom, shapedIcon.left, shapedIcon.right,
boxScale, padding, alongLine) {}
explicit CollisionFeature(const std::vector<Coordinate> &line, const Anchor &anchor,
const float top, const float bottom, const float left, const float right,
const float boxScale, const float padding, const bool alongLine);
std::vector<CollisionBox> boxes;
private:
void bboxifyLabel(const std::vector<Coordinate> &line, const Anchor &anchor, const float length, const float height);
};
}
#endif
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