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#pragma once
#include <mbgl/geometry/feature_index.hpp>
#include <mbgl/text/collision_feature.hpp>
#include <mbgl/util/grid_index.hpp>
#include <mbgl/map/transform_state.hpp>
namespace mbgl {
class PlacedSymbol;
struct TileDistance;
class CollisionIndex {
public:
using CollisionGrid = GridIndex<IndexedSubfeature>;
using GridUnit = float;
explicit CollisionIndex(const TransformState&);
bool placeFeature(CollisionFeature& feature,
const mat4& posMatrix,
const mat4& labelPlaneMatrix,
const float textPixelRatio,
PlacedSymbol& symbol,
const float scale,
const float fontSize,
const bool allowOverlap,
const bool pitchWithMap,
const bool collisionDebug);
void insertFeature(CollisionFeature& feature, bool ignorePlacement);
std::vector<IndexedSubfeature> queryRenderedSymbols(const GeometryCoordinates&, const CanonicalTileID& tileID, const std::string& sourceID) const;
private:
bool placeLineFeature(CollisionFeature& feature,
const mat4& posMatrix,
const mat4& labelPlaneMatrix,
const float textPixelRatio,
PlacedSymbol& symbol,
const float scale,
const float fontSize,
const bool allowOverlap,
const bool pitchWithMap,
const bool collisionDebug);
float approximateTileDistance(const TileDistance& tileDistance, const float lastSegmentAngle, const float pixelsToTileUnits, const float cameraToAnchorDistance, const bool pitchWithMap);
std::pair<float,float> projectAnchor(const mat4& posMatrix, const Point<float>& point) const;
std::pair<Point<float>,float> projectAndGetPerspectiveRatio(const mat4& posMatrix, const Point<float>& point) const;
Point<float> projectPoint(const mat4& posMatrix, const Point<float>& point) const;
TransformState transformState;
float pitchFactor;
CollisionGrid collisionGrid;
CollisionGrid ignoredGrid;
};
} // namespace mbgl
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